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Anton Hartmann

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  1. Hartmann, A., Klink, S., Rothballer, M. 2021. Importance of N-Acyl-Homoserine Lactone-Based Quorum Sensing and Quorum Quenching in Pathogen Control and Plant Growth Promotion. Pathogens. 10: 1561. doi: 10.3390/pathogens10121561.
  2. Hartmann, A., Klink, S., Rothballer, M. 2021. Plant growth promotion and induction of systemic tolerance to drought and salt stress of plants by quorum sensing auto-inducers of the N-acyl-homoserine lactone type: recent developments. Frontiers in Plant Science. 12: e683546. doi: 10.3389/fpls.2021.683546.
  3. 2020

  4. Hartmann, A. 2020. Quorum sensing N-acylhomoserine lactone signal molecules of plant beneficial Gram-negative rhizobacteria support plant growth and resistance to pathogens. Rhizosphere. 16: 100258. doi: 10.1016/j.rhisph.2020.100258.
  5. Dos Santos Ferreira, N., Sant Anna, F., Reis, V.M., Ambrosini, A., Volpiano, C.G., Rothballer, M., Schwab, S., Baura, V.A., Balsanelli, E., Pedrosa, F.C., Passaglia, L.M.P., de Souza, E.M., Hartmann, A., Cassan, F., and Zilli, J.E. 2020. Genome-based reclassification of Azospirillum brasilense Sp245 as the type strain of Azospirillum baldaniorum sp. nov. Internal. Journal of Plant Diseases and Protection. 70: 6203–6212. doi: 10.1099/ijsem.0.004517.
  6. Alabid, I., Hardt, M., Imani, J., Stein, E., Hartmann, A., Rothballer, M., Li, D., Uhl, J., Schmitt-Kopplin, P., Glaeser, S., and Kogel, K.H. 2020. The N-acyl-homoserine lactone depleted Rhizobium radiobacter mutant RrF4NM13 shows reduced growth-promoting and resistance-inducing activities in mono- and dicotyledonous plants. Journal of Plant Diseases and Protection. 127: 769-781. doi: 10.1007/s41348-020-00360-8.
  7. 2019

  8. Hartmann, A., Fischer, D., Kinzel, L., Chowdhury, S.P., Hoffmann, A., Baldani, J.I., and Rothballer, M. 2019. Assessment of the structural and functional diversities of plant microbiota – Achievements and challenges – A review. Journal of Advanced Research. 19: 3-13. doi: 10.1016/j.jare.2019.04.007.
  9. 2017

  10. Walker, A., Pfitzner, B., Harir, M., Endesfelder, D., Kahle, M., Schmid, M., Castell, W., Turaev, D., Rattei, T., Neschen, S., Hrabe de Angelis, M., Hartmann, A., and Schmitt-Kopplin P. 2017. Sulfonolipids as novel metabolite markers of Alistipes and Odoribacter afected by high-fat diets. Scientific Reports. 7: 11047. doi: 10.1038/s41598-017-10369-z.
  11. Dixon, R., and Hartmann, A. 2017. Novel insights into ecological distribution and plant growth promotion by N2-fixing endophytes – how specialized are they?. Environmental Microbiology Reports. 9: 179-181. doi: 10.1111/1758-2229.12529.
  12. Kepert, I., Fonseca, J., Muller, C., Milger, K., Hochwind, K., Kostric, M., Feroseeva, M., Ohnmacht, C., Dehmel, S., Nathan, R., Bartel, S., Eickelberg, O., Schloter, M., Hartmann, A., Schmitt-Kopplin, P., and Krauss-Etschmann, S. 2017. D-Tryptophan of probiotic bacteria influences the gut microbiome and allergic airway disease. Journal of Allergy and Clinical Immunology. 139(5): 1525-1535. doi: 10.1016/j.jaci.2016.09.003.
  13. 2016

  14. Diesner, S.C., Bergmayr, C., Pfitzner, B., Assmann, V., Krishnamurthy, D., Starkl, P., Endesfelder, D., Rothballer, M., Welzl, G., Rattei, T., Eiwegger, T., Szepfalusi, Z., Fehrenbach, H., Jensen-Jarolim, E., Hartmann, A., Pali-Scholl, I., and Untersmayr, E. 2016. A distinct microbiota composition is associated with protection from food allergy in an oral mouse immunization model. Clinical Immunology. 173: 10-18. doi: 10.1016/j.clim.2016.10.009.
  15. Schikora, A., Schenk, S.T., and Hartmann, A. 2016. Beneficial effects of bacteria-plant communication based on quorum sensing molecules of the N-acyl homoserine lactone group. Plant molecular biology. 90(6): 605-612.
  16. Nabti, E., Jha, B., and Hartmann, A. 2016. Impact of seaweeds on agricultural crop production as biofertilizer. International Journal of Environmental Science and Technology. 1-16. DOI 10.1007/s13762-016-1202-1.
  17. Han, S., Li, D., Trost, E., Mayer, K.F., Vlot, A.C., Heller, W., Schmid, M., Hartmann, A., and Rothballer, M. 2016. Systemic responses of barley to the 3-hydroxy-decanoyl-homoserine lactone producing plant beneficial endophyte Acidovorax radicis N35. Frontiers in Plant Science. 7: 1868.

  18. Bensidhoum, L., Nabti, E., Tabli, N., Kupferschmied, P., Weiss, A., Rothballer, M., Schmid, M., Keel, C., Hartmann, A. 2016. Heavy metal tolerant Pseudomonas protegens isolates from agricultural well water in northeastern Algeria with plant growth promoting, insecticidal and antifungal activities. European Journal of Soil Biology. 75: 38-46.
  19. Obersteiner, A., Gilles, S., Frank, U., Beck, I., Haring, F., Ernst, D., Rothballer, M., Hartmann, A., Traidl-Hoffmann, C., Schmid, M. 2016. Pollen-associated microbiome correlates with pollution parameters and the allergenicity of Pollen. Plos One. 11(2):1 1-16.
  20. Palacios, O. A., Bashan, Y., Schmid, M., Hartmann, A., de-Bashan, L. E. 2016. Enhancement of thiamine release during synthetic mutualism between Chlorella sorokiniana and Azospirillum brasilense growing under stress conditions. Journal of Applied Phycology. 28: 1521-1531.
  21. 2015

  22. Rothballer, M., Picot, M., Sieper, T., Arends, J. B. A., Schmid, M., Hartmann, A., Boon, N., Buismand, C. J. N., Barriere, F., Strik, D. P. B. T. B. 2015. Monophyletic group of unclassified g-Proteobacteria dominates inmixed culture biofilm of high-performing oxygen reducing biocathode. Bioelectrochemistry. 106: 167-176.
  23. Zeiller, M., Rothballer, M., Iwobi, A. N., Bohnel, H., Gessler, F., Hartmann, A., and Schmid1, M. 2015. Systemic colonization of clover (Trifolium repens) by Clostridium botulinum strain 2301. Frontiers in Microbiology. 6: 1-14.
  24. Hartmann, A., and Schikora, A. 2015. Editorial: Plant responses to bacterial quorum sensing molecules. Frontiers in Plant Sciences. 6(643):1-2.
  25. Jha, B., Singh, V. K., Weiss, A., Hartmann, A., and Schmid, M. 2015. Zhihengliuella somnathii sp. nov., a halotolerant actinobacterium from the rhizosphere of a halophyte Salicornia brachiata. International Journal of Systematic and Evolutionary Microbiology. 65: 3137-3142.
  26. Glaeser, S. P., Imani, J., Alabid, I., Guo, H., Kumar, N., Kampfer, P., Hardt, M., Blom, J., Goesmann, A., Rothballer, A., Hartmann, A., and Kogel, K-H. 2015. Non-pathogenic Rhizobium radiobacter F4 deploys plant beneficial activity independent of its host Piriformospora indica. International Society for Microbial Ecology. 1-14.
  27. Chowdhury, S. P., Uhl, J., Grosch, R., Alqueres, S., Pittroff, S., Dietel, K,. Schmitt-Kopplin, P., Borriss, R., Hartmann, A. 2015. Cyclic Lipopeptides of Bacillus amyloliquefaciens subsp. plantarum colonizing the cettuce rhizosphere enhance plant defense responses toward the bottom rot pathogen Rhizoctonia solani. Molecular Plant-Microbe Interactions Journal. 28(9): 984-95.
  28. Stets, M. I., Alqueres, S. M. C., Souza, E. M., de Oliveira Pedrosa, F., Schmid, M., Hartmann, A., and Cruz, L. M. 2015. Quantification of Azospirillum brasilense FP2 bacteria in wheat roots by strain-specific quantitative PCR. Applied and Environmental Microbiology. 81: 6700-6709.
  29. Chowdhury, S. P., Hartmann, A., Gao, X., and Borriss, R. 2015. Biocontrol mechanism by root-associated Bacillus amyloliquefaciens FZB42?a review. Frontiers in Microbiology. 6.
  30. Gotz-Rosch, C., Sieper, T., Fekete, A., Schmitt-Kopplin, P., Hartmann, A., and Schr?der, P. 2015. Influence of bacterial N-acyl-homoserine lactones on growth parameters, pigments, antioxidative capacities and the xenobiotic phase II detoxification enzymes in barley and yam bean. Frontiers in Plant Science. 6.
  31. 2014

  32. Arango, L., K. Buddrus-Schiemann, K. Opelt, T. Lueders, F. Haesler, M. Schmid, D. Ernst, and A. Hartmann. 2014. Effects of glyphosate on the bacterial community associated with roots of transgenic Roundup Ready® soybean. European Journal of Soil Biology. 63: 41-48.
  33. Buddrus-Schiemann, K., M. Rieger, M. Muehlbauer, M. V. Barbarossa, C. Kuttler, B. A. Hense, M. Rothballer, J. Uhl, J. R. Fonseca, P. Schmitt-Kopplin, M. Schmid, and A. Hartmann. 2014. Analysis of N-acylhomoserine lactone-dynamics in continuous cultures of Pseudomonas putida IsoF using ELISA and UHPLC/qTOF-MS-derived measurements and mathematical models. Analytical and Bioanalytical Chemistry. doi: 10.1007/s00216-014-8063-6.
  34. Budiharjo, A., S. P. Chowdhury, K. Dietel, B. Beator, O. Dolgova, B. Fan, W. Bleiss, J. Ziegler, M. Schmid, A. Hartmann, and R. Borriss. 2014. Transposon mutagenesis of the plant-associated Bacillus amyloliquefaciens ssp. plantarum FZB42 revealed that the nfrA and RBAM17410 genes are involved in plant-microbe-interactions. PLoS One. 9:e98267.
  35. Hofmann, A., D. Fischer, A. Hartmann, and M. Schmid. 2014. Colonization of plants by human pathogenic bacteria in the course of organic vegetable production. Frontiers in Microbiology5 doi: 10.3389/fmicb.2014.00191.
  36. Rascher, D., A. Geerlof, E. Kremmer, P. Kr?mer, S. Michael, A. Hartmann, and M. Rieger. 2014. Total internal reflection (TIRF)-based quantification of procalcitonin for sepsis diagnosis ? A point-of-care testing application. Biosensors and Bioelectronics. 59: 251-258.
  37. Rieger, M., C. Kochleus, D. Teschner, D. Rascher, A. Barton, A. Geerlof, E. Kremmer, M. Schmid, A. Hartmann, and H. Gehlen. 2014. A new ELISA for the quantification of equine procalcitonin in plasma as potential inflammation biomarker in horses. Analytical and Bioanalytical Chemistry 1-6.
  38. Walker, A., B. Pfitzner, S. Neschen, M. Kahle, M. Harir, M. Lucio, F. Moritz, D. Tziotis, M. Witting, M. Rothballer, M. Engel, M. Schmid, D. Endesfelder, M. Klingenspor, T. Rattei, W. z. Castell, M. H. de Angelis, A. Hartmann, and P. Schmitt-Kopplin. 2014. Distinct signatures of host-microbial meta-metabolome and gut microbiome in two C57BL/6 strains under high-fat diet. International Society for Microbial Ecology. J:1-17.
  39. Nabti E., Bensidhoum L., Tabli N., Dahel D., Weiss A., Rothballer M., Schmid M., and Hartmann A. 2014 Growth stimulation of barley and biocontrol effect on plant pathogenic fungi by a Cellulosimicrobium sp. strain isolated from salt-affected rhizosphere soil in northwestern Algeria. European Journal of Soil Biology. 61: 20-26.
  40. 2013

  41. Straub, D., Rothballer, M., Hartmann, A. and Ludewig, U. 2013. The genome of the endophytic bacterium H. frisingense GSF30T identifies diverse strategies in the Herbaspirillum genus to interact with plants. Evolutionary and Genomic Microbiology 4: 1-10.
  42. Wibberg D., Jelonek L., Rupp O., Henning M., Eikmeyer F., Goesmann A., Hartmann A., Borriss R., Grosch R., Puhler A., and Schl?ter A. 2013. Establisment and interpretation of the genome sequence of the phytopathogenic fungus Rhizoctonia solani AG1-IB isolate 7/3/14. Journal of Biotechnology 167: 142-155.
  43. Sieper T., Forczek S., Matucha M., Kr?mer P., Hartmann A., and Schr?der P. 2013. N-acyl-homoserine lactone uptake and systemic transport in barley rest upon active parts of the plant. New Phytologist. doi: 10.1111/nph.12519.
  44. Rouws, L. F. M., Leite, J., de Matos, G. F., Zilli, J. E., Coelho, M. R. R., Xavier, G. R., Fischer, D., Hartmann, A., Reis, V. M. and Baldani, J. I. 2013. Endophytic Bradyrhizobium spp. isolates from sugarcane obtained through different culture strategies. Environmental Microbiology Reports doi: 10.1111/1758-2229.12122.

  45. Jha, B., Kavita, K., Westphal, J., Hartmann, A. and Schmitt-Kopplin, P. 2013. Quorum Sensing Inhibition by Asparagopsis taxiformis, a Marine Macro Alga: Separation of the Compound that Interrupts Bacterial Communication. Marine Drugs 11: 253-265.

  46. Yasmin, S., Hafeez, F. Y., Schmid, M., and Hartmann, A. 2013. Plant-beneficial rhizobacteria for sustainable increased yield of cotton with reduced level of chemical fertilizers. Pakistan Journal of Botany 45: 655-662.

  47. Alqueres S., Meneses C., Rouws L., Rothballer M., Baldani I., Schmid M., and Hartmann A. 2013. The bacterial superoxide dismutase and gluthatione reductase are crucial for endophytic colonization of rice roots by Gluconacetobacter diazotrophicus strain PAL5. Molecular Plant-Microbe Interactions. 26: 937-945.

  48. Chowdhury S.P., Dietel K., Randler M., Schmid M., Junge H., Borriss R., Hartmann A. and Grosch R. 2013. Effects of Bacillus amyloliquefaciens FZB42 on lettuce growth and health under pathogen pressure and its impact on the rhizosphere bacterial community. PLoS ONE. 8: e68818. doi:10.1371/journal.pone.0068818.
  49. 2012

  50. Hartmann, A., Reis, V.M., and Okon, 2012. Obituary for Professor Robert Harza Burris. Plant Soil 356: 297-298

  51. Hense, B.A., Muller, J., Kuttler, C., and Hartmann, A. 2012. Spatial heterogeneity of autoinducer regulation systems. Sensors 12: 4156-4171

  52. Jha, B., Gontia, I., and Hartmann, A. 2012. The roots of the halophyte Salicornia brachiata are a source of new halotolerant diazotrophic bacteria with plant growth-promoting potential. Plant Soil 356: 265-277

  53. Kaestli, M., Schmid, M., Mayo, M., Rothballer, M., Harrington, G., Richardson, L., Hill, A., Hill, J., Tuanyok, A., Keim, P., Hartmann, A., and Currie, B.J. 2012. Out of the ground: aerial and exotic habitats of the melioidosis bacterium Burkholderia pseudomallei in grasses in Australia. Environmental Microbiology 14: 2058-2070

  54. Li, D., Rothballer, M., Engel, M., Hoser, J., Schimdt, T., Kuttler, C., Schmid, M., Schloter, M. and Hartmann, A. 2012. Phenotypic variation in Acidovorax radicis N35 influences plant growth promotion. FEMS Microbiology Ecology 79: 751-762

  55. Frohlich, A., Buddrus-Schiemann, K., Durner, J., Hartmann, A., and von Rad, U. 2012. Response of barley to root colonization by Pseudomonas sp. DSMZ 13134 under laboratory, greenhouse, and field conditions. Journal of Plant Interactions 7: 1-9

  56. Timmers, R.A., Rothballer, M., Strik, D.P.B.T.B., Engel, M., Schulz, S., Schloter, M., Hartmann, A., Hamelers, B. and Buisman, C. 2012. Microbial community structure elucidates performance of Glyceria maxima plant microbial fuel cell. Applied Microbiology and Biotechnology 94: 537-548

  57. Hochwind, K., Weinmaier, T., Schmid, M., van Hemert, S., Hartmann, A., Rattei, T., and Rothballer M. 2012. Draft Genome Sequence of Lactobacillus casei W56. Journal of Bacteriology 194: 6638

  58. Hartmann, A., and Schikora, A. 2012. Quorum sensing of bacteria and trans-kingdom interactions of N-Acyl homoserine lactones with eukaryotes. Journal of Chememistry and Ecology 38: 704-713

  59. Kellermann, C., Selesi, D., Lee N., Hugler, M., Espersch?tz, J., Hartmann, A., and Griebler, C. 2012. Microbial CO2 fixation potential in a tar-oil-contaminated porous aquifer. FEMS Microbioligy Ecology 81: 172-187

  60. Varma, A., Bakshi, M., Lou, B., Hartmann, A., and Oelmueller, R. 2012. Piriformospora indica: A novel plant growth-promoting mycorrhizal fungus. Agricultural Research 1: 117-131

  61. Trejo, A., de-Bashan, L. E., Hartmann, A., Hernandez, J.P., Rothballer, M., Schmid, M. and Bashan, Y. 2012. Recycling waste debris of immobilized microalgae and plant growth-promoting bacteria from wastewater treatment as a resource to improve fertility of eroded desert soil. Environmental and Experimental Botany. 75 : 65-73.

  62. Fischer, D., Pfitzner, B., Schmid, M., Simoes-Araujo, J. L., Reis, V. M., Pereira, W., Orme?o-Orrillo, E., Hai, B., Hofmann, A., Schloter, M., Martinez-Romero, E., Baldani, J. I. and Hartmann, A. 2012. Molecular characterisation of the diazotrophic bacterial community in uninoculated and inoculated field-grown sugarcane (Saccharum sp.). Plant and Soil. 356: 83-99.
  63. 2011

  64. de-Bashan, L.E., Schmid, M., Rothballer, M., Hartmann, A., and Bashan Y., 2011. Cell-cell interaction in the eukaryote-prokaryote model using the microalgae Chlorella vulgaris and the bacterium Azospirillum brasilense immobilized in polymer beads. Journal of Phycology 47:1350-1359.

  65. Gontia, I., Kavita, K., Schmid, M., Hartmann, A. and Jha, B. 2011. Brachybacterium saurashtrense sp. nov., a halotolerant root-associated bacterium with plant growth promoting potential. Internatonal Journal of Systematic and Evolutionary Microbiology DOI:10.1099/ijs.0.023176-0

  66. Li, D., Rothballer, M., Schmid, M., Esperschutz, J. and Hartmann, A. 2011. Acidovorax radicis sp. nov., a wheat-root-colonizing bacterium. Internatonal Journal of Systematic and Evolutionary Microbiology. 61: 2589-2594.

  67. Isaza, L. A., Opelt, K., Wagner, T., Mattes, E., Bieber, E., Hatley, E. O., Roth, G., Sanjuan, J., Fischer, H.-M., Sandermann, H., Hartmann, A. and Ernst, D. 2011. Lack of Glyphosate resistance gene transfer from Roundup Ready Soybean to Bradyrhizobium japonicum under field and laboratory conditions. Z. Naturforsch. 66c.
  68. 2010

  69. Nabti E., Sahnoune M., Ghoul M., Fischer D., Hofmann A., Rothballer M., Schmid M., and Hartmann A. 2010 Restoration of growth of durum wheat (Triticum durum var. waha) under saline conditions due to inoculation with the rhizosphere bacterium Azospirillum brasilense NH and extracts of the marine alga Ulva lactuca. Journal of Plant Growth Regulation. 29: 6-22.

  70. Buddrus-Schiemann, K., Schmid, M., Schreiner, K., Welzl, G., and Hartmann, A. 2010 Root colonization by Pseudomonas sp. DSMZ 13134 and impact on the indigenous rhizosphere bacterial community of barley. Microbial Ecology. 60: 381?393.
  71. 2009

  72. Schmid, M., Iversen, C., Gontia, I., Stephan, R., Hofmann, A., Hartmann, A., Jha, B., Eberl, L., Riedel, K. and Lehner, A. 2009 Evidence for a plant-associated natural habitat for Cronobacter spp. Research in Microbiology 160: 608 - 614

  73. Paul Chowdhury S., Schmid M., Hartmann A., and Tripathi A. K. 2009 Diversity of 16S-rRNA and nifH genes derived from rhizosphere soil and roots of an endemic drought tolerant grass, Lasiurus sindicus. European Journal of Soil Biology 45: 114-122

  74. Jha B., Thakur M. C., Gontia I., Albrecht V., Stoffels M., Schmid M., and Hartmann A. 2009 Isolation, partial identification and application of diazotrophic rhizobacteria from traditional Indian rice cultivars. European Journal of Soil Biology. 45: 62-72.

  75. Oliveira A.L.M, Stoffels M., Schmid M., Reis V.M., Baldani J.I., and Hartmann A. 2009 Colonization of sugarcane plantlets by mixed inoculations with diazotrophic bacteria. European Journal of Soil Biology. 45: 106-113.

  76. Hartmann A., Schmid M., van Tuinen D., and Berg G. 2009 Plant-driven selection of microbes. Plant and Soil. 321: 235-257 doi: 10.1007/s11104-008-9814-y.

  77. Rosenberg, K., Bertaux, J., Krome, K., Hartmann, A., Scheu, S, and Bonkowski, M. 2009 Soil amoebae rapidly change bacterial community composition in the rhizosphere of Arabidopsis thaliana. ISME Journal. 3: 675-684.
  78. 2008

  79. Buddrus-Schiemann K., Schmid M., Schreiner K., Welzl G., and Hartmann A. (2010). Root colonization by Pseudomonas sp. DSMZ 13134 and impact on the indigenous rhizosphere bacterial community of barley. Microbial Ecology. 60: 381?393.

  80. Wagner T., Arango Isaza L.M., Grundmann S., D?rfler U., Schroll R., Schloter M., Hartmann A., Sandermann H., and Ernst D. 2008 The probability of a horizontal gene transfer from Roundup Ready® soybean to microorganisms: a risk assessment study on the GSF lysimeter station. Water, Air, and Soil Pollution: Focus. 8: 155-162.

  81. Rothballer M., Eckert B., Schmid M., Fekete A., Schloter M., and Hartmann A. 2008 Endophytic root colonization of gramineous plants by Herbaspirillum frisingense. FEMS Microbiology Ecology 66: 85-95

  82. Sharma M., Schmid M., Rothballer M., Hause G., Zuccaro A., Imani J., Kampfer P., Sch?fer P., Hartmann A., and Kogel K.-H. 2008. Detection and identification of bacteria intimately associated with representatives of the order Sebacinales. Cellular Microbiology. 10: 2235?2246.

  83. Hartmann, A., Rothballer, M. and Schmid, M. 2008 Lorenz Hiltner, a pioneer in rhizosphere microbial ecology and soil bacteriology research. Plant and Soil. 312: 7-14.

  84. Ernst, D., Rosenbrock-Krestel, H., Kirchhof, G., Bieber, E., Giunaschwili, N., M?ller, R., Fischbeck, G., Wagner, T., Sandermann, H., Hartmann A. 2008. Molecular investigations of the soil, rhizosphere and transgenic glufosinate resistant rape and maize plants in combination with herbicide (Basta®) application under field conditions. Zeitschrift f?r Naturforschung. 63: 864-872.

  85. von Rad, U., Klein, I., Dobrev, P.I., Kottova, J., Zazimalova, E., Fekete, A., Hartman,n A., Schmitt-Kopplin, P., Durner, J. 2008 Response of Arabidopsis thaliana to N-hexanoyl-DL-homoserine-lactone, a bacterial quorum sensing molecule produced in the rhizosphere. Planta. 229: 73-85.

  86. Ekschmitt, K., Kandeler, E., Poll, C., Brune, A., Buscot, F., Friedrich, M., Gleixner, G., Hartmann, A., K?stner, M., Marhan, S., Miltner, A., Scheu, S., Wolters, V. 2008. Soil carbon preservation through habitat constraints and biological limitations on decomposer activity. Journal of Plant Nutrition Soil Science. 171: 27-35.

  87. Barriuso J., Ramos Solano, B., Fray, R.G., C?mara, M., Hartmann, A., Guti?rrez Manero, F.J. 2008. Transgenic tomato plants alter quorum sensing in plant growth promoting rhizobacteria. Plant Biotechnology Journal. 6: 442-452.
  88. 2007

  89. Fekete, A., Frommberger, M., Rothballer, M., Li, X., Englmann, M., Fekete, J., Hartmann, A., Eberl, L. and Schmitt-Kopplin, P. 2007. Identification of bacterial N-acylhomoserine lactones (AHLs) with a combination of ultra-performance liquid chromatography (UPLC), ultra-high resolution mass spectrometry, and in-situ biosensors. Analytical and Bioanalytical Chemistry 387: 455-467

  90. Wang, F., Grundmann, S., Schmid, M., Dorfler, U., Rohrer, S., Munch, J. C., Hartmann, A., Xin, J. and Schroll, R. 2007. Isolation and characterization of 1,2,4-trichlorobenzene mineralizing Bordetella sp. and its bioremediation potential in soil. Chemosphere 67: 896-902

  91. Selesi, D., Pattis, I., Schmid, M., Kandeler. E. and Hartmann, A. 2007. Quantification of bacterial RubisCO genes in soils by cbbL targeted real-time PCR. Journal of Microbiological Methods 69: 497-503

  92. Chowdhury, S. P., Schmid, M., Hartmann, A. and Tripathi, A.K. 2007. Identification of diazotrophs in the culturable bacterial community associated with roots of Lasiurus sindicus, a perennial grass of Thar Desert, India. Microbial Ecology 54: 82-90

  93. Hense, B.A., Kuttler, C., Muller, J., Rothballer, M., Hartmann, A. and Kreft, J.-U. 2007. Does efficiency sensing unify diffusion and quorum sensing? Nature Reviews Microbiology 5: 230-239

  94. Nabti, E., Sahnoune, M., Adjrad, S., van Dommelen, A., Ghoul, M., Schmid, M. and Hartmann, A. 2007. A halophilic and osmotolerant Azospirillum brasilense strain from Algerian Soil restores wheat growth under saline conditions. Engineering in Life Sciences 7: 354-360

  95. Bertaux, J., Gloger, U., Schmid, M., Hartmann, A. and Scheu, S. 2007. Routine fluorescence in situ hybridization in soil. Journal of Microbiological Methods. 69: 451-460.

  96. Gotz, C., Fekete, A., Gebefugi, I., Forczek, S. T., Fuksova, K., Li, X., Englmann, M., Gryndler, M., Hartmann, A., Matucha, M., Schmitt-Kopplin, P. and Schroder, P. 2007. Uptake, degradation and chiral discrimination of N-Acyl-D/L-homoserine lactones by barley (Hordeum vulgare) and yam bean (Pachyrhizus erosus) plants. Analytical and Bioanalytical Chemistry. 389: 1447-1457.
  97. 2006

  98. Bathe, S., Achouak, W., Hartmann, A., Heulin, T., Schloter, M. and Lebuhn, M. 2006. Genetic and phenotypic microdiversity of Ochrobactrum spp. FEMS Microbiology Ecology 56: 272-280

  99. Schuhegger, R., Ihring, A., Gantner, S., Bahnweg, G., Knappe, C., Vogg, G., Hutzler, P., Schmid, M., Van Breusegem, F., Eberl, L., Hartmann, A. and Langebartels, C. 2006. Induction of systemic resistance in tomato plants by N-acyl-L-homoserine lactone-producing rhizosphere bacteria. Plant, Cell and Environment 29: 909-918

  100. Gantner, S., Schmid, M., Durr, C., Schuhegger, R., Steidle, A., Hutzler, P., Langebartels, C., Eberl, L., Hartmann, A. and Dazzo, F.B. 2006. In situ quantitation of the spatial scale of calling distances and population density-independent N-acylhomoserine lactone- mediated communication by rhizobacteria colonized on plant roots. FEMS Microbiology Ecology 56: 188-194

  101. Kutter, S., Hartmann, A. and Schmid, M. 2006. Colonization of barley (Hordeum vulgare) with Salmonella enterica and Listeria spp. FEMS Microbiology Ecology 56: 262-271

  102. Rothballer, M., Schmid, M., Klein, I., Gattinger, A., Grundmann, S. and Hartmann A. 2006. Herbaspirillum hiltneri sp. nov., isolated from surface-sterilized wheat roots. International Journal of Systematic and Evolutionary Microbiology 56: 1341-1348

  103. Muller, J., Kuttler, C., Hense, B.A., Rothballer, M. and Hartmann, A. 2006. Cell-cell communcation by quorum sensing and dimension-reduction. Journal of Mathematical Biology 53: 672-702

  104. Li, X., Fekete, A., Englmann, M., G?tz, C., Rothballer, M., Buddrus, K., Cai, C., Schr?der, P., Hartmann, A., Chen, G. and Schmitt-Kopplin, P. 2006. Development and application of a method for the analysis of N-acylhomoserine lactones by solid-phase extraction and ultra high pressure liquid chromatography Journal of Chromatography. 1134: 186-193.

  105. Lebuhna, M., Bathe, S., Achouak, W., Hartmann, A., Heulin, T. and Schloter, M. 2006. Comparative sequence analysis of the internal transcribed spacer 1 of Ochrobactrum species. Systematic and Applied Microbiology. 29: 265?275.
  106. 2005

  107. Azevedo A.S., Teixeira K.R.S., Kirchhof G., Hartmann A., and Baldani J.I. 2005. Influence of soil and host plant crop on the genetic diversity of Azospirillum amazonense isolates. Pedobiologia 49: 565-576

  108. Stein, S., Selesi, D., Schilling, Rolf., Pattis, I., Schmid, M. and Hartmann, A. 2005 Microbial activity and bacterial composition of H2-treated soils with net CO2 fixation. Soil Biology and Biochemistry 37: 1938-1945

  109. Berg, G., Eberl, L. and Hartmann, A. 2005. The rhizosphere as a reservoir for opportunistic human pathogenic bacteria. Environmental Microbiology 7: 1673-1685

  110. Bertaux, J., Schmid, M., Hutzler, P., Hartmann, A., Garbaye, J. and Frey-Klett, P. 2005. Occurrence and distribution of endobacteria in the plant-associated mycelium of the ectomycorrhizal fungus Laccaria bicolor S238N. Environmental Microbiology 7: 1786-1795

  111. Courty, P.-E., Pritsch, K., Schloter, M., Hartmann, A. and Garbaye, J. 2005. Activity profiling of ectomycorrhiza communities in two forest soils using multiple enzymatic tests. New Phytologist 167: 309-319

  112. Frommberger, M., Hertkorn, N., Englmann, M., Jakoby, S., Hartmann, A., Kettrup, A. and Schmitt-Kopplin, Ph. 2005. Analysis of N-acylhomoserine lactones after alkaline hydrolysis and anion-exchange solid-phase extraction by capillary zone electrophoresis-mass spectrometry. Electrophoresis 26: 1523-1532

  113. Herschkovitz, Y., Lerner, A., Davidov, Y., Rothballer, M., Hartmann, A., Okon, Y. and Jurkevitch, E. 2005. Inoculation with the plant growth promoting rhizobacterium Azospirillum brasilense causes little disturbance in the rhizosphere and rhizoplane of maize (Zea mays). Microbial Ecology 50: 277-288

  114. Laturnus, F., Fahimi, I., Gryndler, M., Hartmann, A., Heal, M.R., Matucha, M., Scholer, H.F., Schroll, R. and Svensson, T. 2005. Natural formation and degradation of chloroacetic acids and volatile organochlorines in forest soils. Environmental Science and Pollution Research 12: 233-244

  115. Miltner, A., Kopinke, F.-D., Kindler, R., Selesi, D., Hartmann, A. and Kastner, M. 2005. Non-photosynthetic CO2 fixation by soil microorganisms. Plant and Soil 269: 193-203

  116. Rothballer, M., Schmid, M., Fekete, A. and Hartmann, A. 2005. Comparative in situ analysis of ipdC-gfpmut3 promotor fusions of Azospirillum brasilense strains Sp7 and Sp245. Environmental Microbiology 7: 1839-1846

  117. Selesi, D., Schmid, M. and Hartmann, A. 2005. Diversity of "green-like" and "red-like" ribulose-1,5-bisphosphate carboxylase/oxygenase large subunit genes (cbbL) in differently managed agricultural soils. Applied and Environmental Microbiology. 71: 175-177.

  118. K. Pritsch, K., Luedemann, G., Matyssek, R., Hartmann, A., Schloter, M., Scherb, H. and Grams, T.E.E. 2005. Mycorrhizosphere responsiveness to atmospheric ozone and inoculation with Phytophthora citricola in a phytotron Experiment with spruce/beech mixed cultures. Plant Biology. 7: 718?727.
  119. 2004

  120. Frommberger, M., Schmitt-Kopplin, P., Ping, G., Frisch, H., Schmid, M., Zhang, Y., Hartmann, A. and Kettrup, A. 2004. A simple and robust set-up for on-column sample preconcentration?nano-liquid chromatography ? electrospray ionization mass spectrometry for the analysis of N-homoserine lactones. Analytical and Bioanalytical Chemistry 378: 1014-1020

  121. Pritsch, K., Raidl, S., Marksteiner, E., Blaschke, H., Agerer, R., Schloter, M. and Hartmann, A. 2004. A rapid and highly sensitive method for measuring enzyme activities in single mycorrhizal tips using 4-methylumbelliferone-labelled fluorogenic substances in a microplate system 2004 Journal of Microbiological Methods. 58: 233-241.

  122. Reis, V.M., Estrada-de los Santos, P., Tenorio-Salgado, S., Vogel, J., Stoffels, M., Guyon, S., Mavingui, P., Baldani, V.L.D., Schmid, M., Baldani, J.I., Balandreau, J., Hartmann, A. and Caballero-Mellado, J. 2004. Burkholderia tropica sp. nov., a novel nitrogen-fixing, plant-associated bacterium. International Journal of Systematic and Evolutionary Microbiology. 54: 2155-2162.
  123. 2003

  124. Lucas-Garc?a, J.A., Schloter, M., Durkaya, T., Hartmann, A. and Guti?rrez-Ma?ero, F.J. 2003 Colonization of pepper roots by a plant growth promoting Pseudomonas fluorescens strain. Biology and Fertility of Soils 37: 381-385

  125. Bertaux, J., Schmid, M., Chemidlin Prevost-Boure, N., Churin, J.L., Hartmann, A., Garbaye,J. and Frey-Klett, P. 2003. In situ identification of intracellular bacteria related to Paenibacillus spp. in the mycelium of the ectomycorrhizal fungus Laccaria bicolor S238N. Applied and Environmental Microbiology 69: 4243-4248

  126. Frommberger, M., Schmitt-Kopplin, P., Menzinger, F., Albrecht, V., Schmid, M., Eberl, L., Hartmann, A. and Kettrup, A. 2003. Analysis of N-acyl-L-homoserine lactones produced by Burkholderia cepacia with partial filling micellar electrokinetic chromatography - electrospray ionization-ion trap mass spectrometry. Electrophoresis 24: 3067-3074

  127. Metz, S., Beisker, W., Hartmann, A. and Schloter, M. 2003. Detection methods for the expression of the dissimilatory copper-containing nitrite reductase gene (DnirK) in environmental samples. Journal of Microbiological Methods. 55: 41-50.

  128. Rothballer, M., Schmid, M. and Hartmann, A. 2003. In situ localization and PGPR-effect of Azospirillum brasilense strains colonizing roots of different wheat varieties. Symbiosis. 34: 261-279.
  129. 2002

  130. Jontofsohn M., Pfister G., Severin-Edmair G., Schramm K.-W., Hartmann A., and Schloter M. 2002. Bacterial community structure in lake sediments of microcosms contaminated with nonylphenol. Journal of Soils and Sediments 2: 211-215

  131. Jontofsohn, M., Stoffels, M., Hartmann, A., Pfister, G., Juttner, I., Severin-Edmeir, G., Schramm, K.-W. and Schloter, M. 2002. Influence of nonylphenol on the microbial community of lake sediments in microcosms. The Science of the Total Environment 285: 3-10

  132. Metz, S., Hartmann, A. and Schloter, M. 2002. Development and characterization of murine monoclonal antibodies specific for dissimilatory copper nitrite reductase. Hybridoma and Hybridomics. 21: 351-357.

  133. Emmerling, C., Schloter, M., Hartmann, A. and Kandeler, E. 2002 Functional diversity of soil organisms: a review of recent research activities in Germany. Journal of plant nutrition and soil science. 165: 408-420.
  134. 2001

  135. Bach, H.J., Hartmann, A., Schloter, M. and Munch, J.C. 2001. PCR primers and functional probes for amplification and detection of bacterial genes for extracellular peptidases in single strains and in soil. Journal of Microbiological Methods 44: 173-182

  136. Eckert, B., Weber, O.B., Kirchhof, G., Halbritter, A., Stoffels, M. and Hartmann, A. 2001. Azospirillum doebereinerae sp. nov., a nitrogen-fixing bacterium associated with the C4-grass Miscanthus. International Journal of Systematic and Evolutionary Microbiology 51: 17-26

  137. Kirchhof, G., Eckert, B., Stoffels, M., Baldani, J.I., Reis, V.M. and Hartmann, A. 2001. Herbaspirillum frisingense sp. nov., a new nitrogen fixing bacterial species occurring in C4-energy plants. International Journal of Systematic and Evolutionary Microbiology 51: 157-168

  138. Steidle, A., Sigl, K., Schuhegger, R., Ihring, A., Schmid, M., Gantner, S., Stoffels, M., Riedel, K., Givskov, M., Hartmann, A., Langebartels, C. and Eberl, L. 2001. Visualization of N-Acylhomoserine lactone-mediated cell-cell communication between bacteria colonizing the tomato rhizosphere. Applied and Environmental Microbiology. 67: 5761-5770.

  139. Stoffels, M., Castellanos, T. and Hartmann, A. 2001. Design and application of new 16S rRNA-targeted oligonucleotide probes for the Azospirillum-Skermanella-Rhodocista-cluster. Systematic and Apllied Microbiology. 24: 83-97.
  140. 2000

  141. Mogge B., Loferer C., Agerer R., Hutzler P., and Hartmann A. 2000. Bacterial community structure and colonization patterns of Fagus sylvatica L. ectomycorrhizospheres as determined by fluorescence in situ hybridization (FISH) and confocal laser scanning microscopy (CSLM). Mycorrhiza 9: 272-278.

  142. Lebuhn, M., Achouak, W., Schloter, M., Berge, O., Meier, H., Hartmann, A. and Heulin, T. 2000. Taxonomic characterization of Ochrobactrum sp. isolates from soil samples and wheat roots, and description of Ochrobactrum tritici sp. nov. and Ochrobactrum grignonense sp. nov. International Journal of Systematic and Evolutionary Microbiology. 50: 2207-2223.

  143. Schloter, M., Lebuhn, M., Heulin, T. and Hartmann, A. 2000. Ecology and evolution of bacterial microdiversity. FEMS Microbiology Reviews. 24: 647-660.
  144. 1999

  145. Bach, H.-J., Errampalli, D., Leung, H.T., Lee, H., Hartmann, A., Trevors, J.T. and Munch, J.C. 1999. Specific detection of the gene for the extracellular neutral protease of Bacillus cereus by PCR and blot hybridization. Applied and Environmental Microbiology 65: 3226-3229

  146. Bach, H.-J., Hartmann, A., Trevors, J.T. and Munch, J.C. 1999. Magnetic capture- hybridization method for purification and probing of mRNA for neutral protease of Bacillus cereus. Journal of Microbiological Methods. 37: 187-192.

  147. Winkelmann, G., Busch, B., Hartmann, A., Kirchhof, G., Su?muth, R. and Jung, G. 1999. Degradation of desferrioxamines by Azospirillum irakense: Assignment of metabolites by HPLC/electrospray mass spectrometry. BioMetals. 12: 255-264.
  148. 1998

  149. Gilbert B., A?mus B., Hartmann A., and Frenzl P. 1998. In situ localization of two methanotrophic strains in the rhizosphere of rice plants. FEMS Microbiology Ecology 25: 117-128

  150. Kirchhof G., Baldani J.I., Reis V.M., and Hartmann A. 1998. Molecular assay to identify Acetobacter diazotrophicus and detect its occurrence in plant tissues. Canadian Journal of Microbiology 44: 12-19

  151. Schloter M., and Hartmann A. 1998. Endophytic and surface colonization of wheat roots (Triticum aestivum) by different Azospirillum brasilense strains studied with strain-specific monoclonal antibodies. Symbiosis. 25: 159-179.

  152. Schloter, M., Zelles, L., Hartmann, A. and Munch, J.C. 1998 New quality of assessment of microbial diversity in arable soils using molecular and biochemical methods. Zeitschrift fuer Pflanzenernaehrung und Bodenkunde. 161: 425-431.
  153. 1997

  154. Lebuhn M., Heulin T., and Hartmann A. 1997. Production of auxin and other indolic and phenolic compounds by Paenibacillus polymyxa strains isolated from different proximity to plant roots. FEMS Microbiology Ecology 22: 325-334

  155. Kirchhof, G., Schloter, M., A?mus, B. and Hartmann, A. 1997 Molecular microbial ecology approaches applied to diazotrophs associated with non-legumes. Soil Biology and Biochemistry 29: 853-862

  156. A?mus, B., Schloter, M., Kirchhof, G., Hutzler, P. and Hartmann, A. 1997. Improved in situ tracking of rhizosphere bacteria using dual staining with fluorescence-labeled antibodies and rRNA-targeted oligonucleotides. Microbial Ecology 33: 32-40

  157. Kirchhof, G., Reis, V.M., Baldani, J.I., Eckert, B., Dobereiner, J. and Hartmann, A. 1997. Occurrence, physiological and molecular analysis of endophytic diazotrophic bacteria in gramineous energy plants. Plant and Soil 194: 45-55

  158. Ludwig, W., Bauer, S.H., Bauer, M., Held, I., Kirchhof, G., Schulze, R., Huber, I., Spring, S., Hartmann, A. and Schleifer, K.H. 1997. Detection and in situ localization of representatives of a widely distributed new bacterial phylum. FEMS Microbiology Letters 153: 181-190

  159. Schloter, M., Wiehe, W., A?mus, B., Steindl, H., Becke, H. and Hoflich, G. 1997. Root colonization of different plants by plant-growth promoting Rhizobium leguminosarum bv. trifolii R39 studied with monospecific polyclonal antisera. Applied and Environmental Microbiology 63: 2038-2046

  160. Assmus, B.,Hausner, M., Grenier, D., Schloter, M., Hartmann, A. and Goldner, M. 1997 Direct examination of subgingival plaque from a diseased periodontal site using confocal laser scanning microscopy (CLSM). The New microbiologica .20: 155-159.

  161. Schloter, M., Bode, W. and Hartmann, A. 1997 Characterization and application of a strain-specific monoclonal antibody against the rhizosphere bacterium Azospirillum brasilense Wa5. Hybridoma. 16: 183-187.
  162. 1996

  163. Schloter, M. and Hartmann, A. 1996 Production and characterization of strain-specific monoclonal antibodies against outer membrane components of Azospirillum brasilense Sp245. Hybridoma 15: 225-32.

  164. Wiehe, W., Schloter, M., Hartmann, A., H?flich, G. 1996 Detection of colonization by Pseudomonas PsIA12 of inoculated roots of Lupinus albus and Pisum sativum in grennhouse experiments with immunological techniques. Symbiosis. 20: 129-145.

  165. Baldani, J.I., Pot, B., Kirchhof, G., Falsen, E., Baldani, V.L.D., Olivares, F.L., Hoste, B., Kersters, K., Hartmann, A., Gillis, M. and Dobereiner, J. 1996. Emended description of Herbaspirillum; inclusion of [Pseudomonas] rubrisubalbicans, a mild plant pathogen, as Herbaspirillum rubrisubalbicans comb. nov.; and classification of a group of clinical isolates (EF group 1) as Herbaspirillum species 3. International Journal of Systematic Bacteriology. 46: 802-810.
  166. 1995

  167. Albers B.P., Beese F., and Hartmann A. 1995. Flow-microcalorimetric measurements of aerobic and anaerobic soil microbial activities. Biology and Fertility of Soils 19: 203-208

  168. Schloter, M., A?mus, B. and Hartmann, A. 1995. The use of immunological methods to detect and identify bacteria in the environment. Biotechnology Advances. 13: 75-90.

  169. A?mus, B., Hutzler, P., Kirchhof, G., Amann, R., Lawrence, J.R. and Hartmann, A. 1995. In situ localization of Azospirillum brasilense in the rhizosphere of wheat using fluorescently labeled, rRNA-targeted oligonucleotide probes and scanning confocal laser microscopy. Applied and Environmental Microbiology. 61: 1013-1019.
  170. 1994

  171. Beese F., Hartmann A., Beck T., Rackwitz R., and Zelles L. 1994. Microbial community structure and activity in agricultural soils under different management. Zeitschrift f?r Pflanzenern?hrung und Bodenkunde 157: 187-195

  172. Lebuhn M., Heilmann B., and Hartmann A. 1994. Effects of drying/rewetting stress on microbial auxin production and L-tryptophan catabolism in soils. Biology and Fertility of Soils 18: 302-310

  173. Wagner M., A?mus B., Amann R., Hutzler P., and Hartmann A. 1994. In situ analysis of microbial consortia in activated sludge using fluorescently labelled, rRNA-targeted oligonucleotide probes and confocal scanning laser microscopy. Journal of Microscopy 176: 181-187

  174. Wagner M., Amann R., K?mpfer P., A?mus B., Hartmann A., Hutzler P., Ludwig W., Springer N., and Schleifer K.-H. 1994. Identification and in situ detection of Gram-negative filamentous bacteria in activated sludge. Systematic and Applied Microbiology 17: 405-417

  175. Stubner, S., Schlober, M., Moeck, G.S:, Coulton J. W., Ahne, F. and Hartmann A. 1994. Construction of umu-fhuA operon fusions to detect genotoxic potential by an antibody-cell surface reaction. Environmental Toxicology and Water Quality. 9: 285-291.

  176. Schloter, M., Moens, S., Croes, C., Reidel, G., Esquenet, M., De Mot, R., Hartmann, A, and Michiels, K. 1994. Characterization of cell surface components of Azospirillum brasilense Sp7 as antigenic determinants for strain-specific monoclonal antibodies. Microbiology. 140: 823-828.
  177. 1993

  178. Schloter, M., Borlinghaus, R., Bode, W. and Hartmann, A. 1993 Direct identification, and localization of Azospirillum in the rhizosphere of wheat using fluorescence-labelled monoclonal antibodies and confocal scanning laser microscopy. Journal of microscopy 71: 173-177

  179. Gundisch C., Kirchhof G., Baur M., Bode W., and Hartmann A. 1993 Identification of Azospirillum species by RFLP and pulsed-field gel electrophoresis. Microbial releases. 2: 41-45.

  180. Lebuhn M., and Hartmann A. 1993. Method for the determination of indole-3-acetic acid and related compounds of L-tryptophan catabolism in soils. Journal of chromatography. 629: 255- 266.
  181. 1992

  182. Schloter, M., Bode, W., Hartmann, A. and Beese, F. 1992 Sensitive chemoluminescence-based immunological quantification of bacteria in soil extracts with monoclonal antibodies. Soil Biology and Biochemistry 24: 399-403

  183. Schloter, M., Bode, W. and Hartmann, A. 1992 Characterization of monoclonal antibodies against cell surface structures of Azospirillum brasilense Sp7 using ELISA techniques. Symbiosis 13: 37-45

  184. Kirchhof G., and Hartmann A. 1992. Development of Azospirillum specific gene-probes based on 23S-rRNA sequences. Symbiosis. 13: 27-35.

  185. Hartmann, A., G?ndisch, C., Bode, W. 1992 Azospirillum mutants improved in iron acquisition and osmotolerance as tools for the investigation of environmental fitness traits. Symbiosis. 13: 271?279.
  186. 1991

  187. Hartmann, A., Prabhu, S.R., Galinski, E.A. 1991 Osmotolerance of diazotrophic rhizosphere bacteria. Plant and Soil. 137: 105?109.

  188. Burris R. H., Hartmann A., Zhang Y., and Fu H. 1991. Control of nitrogenase in Azospirillum spp. Plant and Soil. 137: 127-124.
  189. 1989

  190. Fu, H., Hartmann, A., Lowery, R.G., Fitzmaurice, W.P., Roberts, G.P. and Burris, R.H. 1989 Posttranslationalregulatory system for nitrogenase activity in Azospirillum spp. Journal of Bacteriology. 171: 4679-4685.
  191. 1988

  192. Hartmann A., and Hurek T. 1988. Effect of carotenoid overproduction on oxygen tolerance of nitrogen fixation in Azospirillum brasilense Sp7. Journal of General Microbiology 134: 2449- 2455

  193. Hartmann, A., Fu, H. and Burris, R. H. 1988. Influence of amino acids on nitrogen fixation activity and growth of Azospirillum spp. Applied and Environmental Microbiology. 54: 87-93.

  194. Hartmann, A. 1988. Ecophysiological aspects of growth and nitrogen fixation in Azospirillum spp. Plant and Soil. 110: 225-238.
  195. 1987

  196. Hartmann, A. and Burris, R.H. 1987. Regulation of nitrogenase activity by oxygen in Azospirillum brasilense and Azospirillum lipoferum. Journal of Bacteriology. 169: 944-948.
  197. 1986

  198. Hartmann, A., Fu, H. and Burris, R.H. 1986. Regulation of the nitrogenase activity by ammonium chloride in Azospirillum spp. Journal of Bacteriology. 165: 864-870.
  199. 1985

  200. Song, S.D., Hartmann, A. and Burris, R.H. 1985. Purification and properties of the nitrogenase of Azospirillum amazonense. Journal of Bacteriology. 164: 1271-1277.
  201. 1983

  202. Hartmann, A., Singh, M. and Klingmuller, W. 1983 Isolation and characterization of Azospirillum mutants excreting high amounts of indoleacetic acid. Canadian Journal of Microbiology. 29: 916-923.

  203. Kleiner, D., Alef, K. and Hartmann, A. 1983 Uptake of methionine sulfoximine by some N2- fixing bacteria and its effect on ammonium transport. FEBS letters. 164: 121-123.
  204. 1982

  205. Hartmann A., and Kleiner D. 1982 Ammonium (methylammonium) transport by Azospirillum spp. FEMS Microbiology Letters. 15: 65-67.
  206. 1981

  207. Schneider R., Hartmann A., and Braun V. 1981 Transport of the iron ionophore ferrichrome in Escherichia coli K-12 and Salmonella typhimurium LT2. FEMS Microbiology Letters. 11: 115-119.

  208. Hartmann A., and Braun V. 1981. Iron uptake and iron limited growth of Escherichia coli K- 12. Archives of Microbiology. 130: 353-356.
  209. 1980

  210. Hartmann A., and Braun V. 1980 Iron uptake in Escherichia coli: Uptake and modification of ferrichrome. Journal of Bacteriology. 143: 246-255.
  211. 1979

  212. Hartmann, A., Fiedler, H.P. and Braun, V. 1979 Uptake and conversion of the antibiotic albomycin by Escherichia coli K-12. European Journal of Biochemistry. 99: 517-524.
  213. 1976

  214. Michel R., Liebl A., Hartmann A., and Neupert W. 1976 Action of intracellular proteinases on mitochondrial translation products of Neurospora crassa and Schizosaccharomyces pombe. Hoppe-Seyler's Zeitschrift f?r physiologische Chemie. 357: 415-426.
  215. Braun V., Hancock R.E.W., Hantke K., and Hartmann A. 1976 Functional organization of the outer membrane of Escherichia coli: phage and colicin receptors as components of iron uptake systems. Journal of Supramolecular Structure. 5: 37-58.

Chapter in books

Items in the following list that are not available for download may be available upon request from the author. Please contact them directly for any such inquiry.


  1. Hartmann, A., Klink, S, Rothballer, M. 2021 Plant growth promotion and induction of systemic tolerance to drought and salt stress of plants by quorum sensing auto-inducers of the N-acyl-homoserine lactone type: recent developments. In: Prime Archives in Plant Sciences, 2nd edition.
  2. 2020

  3. Hartmann, A., Rothballer, M. 2020 Role of N-acyl-homoserine lactone QS-signals inbacteria - plant interactions (chapter 9). In: Trends in Quorum Sensing and Quorum Quenching, New Perspectives and Applications. (eds. V. Ravishankar Rai, J. A. Bai), CRC-Press, Taylor & Francis Group. Boca Raton, London, New York. pp. 119-129, ISBN: 978-0-3672-24288.
  4. 2019

  5. van Elsas, J. D., Hartmann, A., Schloter, M., Trevors, J. T., Jansson, J. K. 2019 The Bacteria and Archaea in Soil (chapter 4). In: Modern Soil Microbiology, 3rd edition, (eds.: J. D. van Elsas, J. T. Trevors, A. S. Rosado, P. Nannipieri). CRC Press, Tayler & Francis Group. Boca Raton, London, New York. pp. 49-64, ISBN: 978-1-4987-6353-0.
  6. Dazzo, F. B., Garoutte, A., Hartmann, A. 2019 Rhizosphere. In: Encyclopedy inMicrobiology, 4th edition, (ed.: Thomas, M. Schmidt). Elsevier, UK, pp. 147-163.
  7. 2018

  8. Han, S., Li, D., Rothballer, M., Schmid, M., Hartmann, A. 2018 Acidovorax radicis, a plant growth promoting endophytic bacterium in wheat and barley roots (chapter 10). In: Plant pathogenic Acidovorax species. (eds.: S. Burdmann, R. R. Walcott). APS-Press, Washington, pp. 131-139, ISBN: 978-0-89054-605-5.
  9. Rothballer, M., Uhl, J., Kunze, J., Schmitt-Kopplin, P., Hartmann, A. 2018. Detection of bacterial quorum sensing signaling molecules N-acyl-homoserine lactones and N-acyl-homoserine with an Enzyme-Linked Immunosorbent Assay (ELISA) and via ultrahigh performance liquid chromatography coupled to mass spectrometry (UPLC-MS). In: Quorum Sensing: Methods and Protocols. Springer series “Methods in Molecular Biology”. Eds.: L. Leoni, and G. Rampioni. ISBN: 978-1-4939-7309-5. doi: 10.1007/978-1-4939-7309-5_5.


  10. Hartmann, A., and Rothballer, M. 2017. Role of quorum sensing signals of rhizobacteria for plant growth promotion. In: Rhizotrophs: Plant Growth Promotion to Bioremediation. Microorganisms for Sustainability 2 (Chapter 10). Ed.: S. Mehnaz. Springer Nature. Singapore. 205-217, doi: 10.1007/978-981-10-4862-3_10.

  11. Glaeser, S.P., Imaniu, J., Alabid, I., Guo, H., Kampfer, P., Hardt, M., Blom, J., Goesmann, A., Rothballer, M., Hartmann, A., and Kogel, K.-H. 2017. Detection and characterization of endobacteria in the fungal endophyte Piriformospora indica. In: Modern Tools and Techniques to Understand Microbiology (Chapter 15). Eds.: A. Varma, A.K. Sharma. Springer Verlag. Berlin, Heidelberg. 237-251. doi: 10.1007/978-3-319-49197-4_15.


  12. Nabti, E., Schmid, M., Hartmann, A. 2015 Application of halotolerant bacteria to restore plant growth under salt stress. In: Halophiles, Springer-Verlag, pp. 235-259
  13. Schrey, S.D., Hartmann, A., and Hampp, R. 2015. Rhizosphere Interactions. In: Ecological Biochemistry: Environmental and Interspecies Interactions. 292-311.

  14. Hartmann, A., James, E.K., Frans, J., Schwab, S., Rothballer, M., and Schmid, M. 2015. In situ localization and strain-Specific quantification of Azospirillum and other diazotrophic plant growth-promoting rhizobacteria using antibodies and molecular probes. In: Handbook for Azospirillum. Chapter 3. Springer International Publishing. F.D. Cass?n et al. (eds.). pp. 45-64.

  15. Rouws, L.F.M., Fischer, D., Schmid, M., Reis, V.M., Baldani, J.I., and Hartmann, A. 2015. Culture-independent assessment of diazotrophic bacteria in sugarcane and isolation of Bradyrhizobium spp. from field-grown sugarcane plants using legume trap plants. In: Biological nitrogen fixation. Chapter 94. Vol. 2. John Wiley & Sons, Inc. Frans J. de Bruijn, Eds. 955-966.

  16. Wisniewski-Dy?, F., Vial, L., Burdman, S., Okon, Y., and Hartmann, A. 2015. Phenotypic variation in Azospirillum spp and other root-associated bacteria. In: Biological nitrogen fixation. Chapter 103. Vol. 2. John Wiley & Sons, Inc. Frans J. de Bruijn, Eds. 1047-1054.


  17. Baldani, J. I., Rouws, L., Cruz, L.M. Olivares, F.L., Schmid, M., Hartmann, A. 2014 The family Oxalobacteriaceae – chapter 35. In: The Prokaryotes – Alphaproteo-bacteria and Betaproteobacteria, Springer-Verlag, Berlin, Heidelberg. pp. 920-974.
  18. Baldani, J. I., Videira, S. S., Teixeira, K. R. dos Santos, Reis, V. M., de Oliveira, A. L.M., Schwab, S., de Souza, E. M., Pedraza, R. O., Baldani, V. L. D., Hartmann, A. 2014 The family Rhodospirillaceae – chapter 22. In: The Prokaryotes – Alpha Proteobacteria and Betaproteobacteria, Springer-Verlag, Berlin, Heidelberg. pp. 534-618.
  19. 2013

  20. Varma, A., Fekete, A., Srivastava, A., Saxena, A.K., Frommberger, M., Li D., Gschwendter, S., Sherameti, I., Oelmueller, R., Schmitt-Kopplin P., Tripathi S., and Hartmann A. 2013. Chapter 12: Inhibitory Interactions of Rhizobacteria with the Symbiotic Fungus Piriformospora indica. In: Piriformospora indica, Soil Biology 33 (eds.: A. Varma). Berlin Heidelberg, Germany: Springer-Verlag, pp. 201-219

  21. Hartmann, A., Schenk, S.T., Riedel, T., Schroder P., and Schikora, A. 2013. The response of plants toward N-Acyl homoserine lactones of Quorum-Sensing-active bacteria in the rhizosphere. In: Molecular Microbial Ecology of the Rhizosphere, Volume 2, Ed. Frans J. de Bruijn. Wiley-Blackwell.

  22. Berg, G., Alavi M., Schmid, M. and Hartmann, A. 2013. The Rhizosphere as a Reservoir for Opportunistic Human Pathogenic Bacteria. In: Molecular Microbial Ecology of the Rhizosphere, Volume 2, First Edition. Edited by Frans J. de Bruijn. Wiley-Blackwell.
  23. Rothballer, M. und Hartmann, A. 2013. Von Archaeen und Eukaryoten - "Come together" der altesten Baumeister der Welt. In: BodenLeben - Erfahrungsweg ins Innere der Erde (Hrsg.: Beatrice Voigt), pp. 154-161.
  24. 2012

  25. Agerer, R., Hartmann, A., Pritsch, K., Raidl, S., Schloter, M., Verma, R. and Weigt, R. 2012. Plants and their ectomycorrhizosphere: cost and benefit of symbiotic soil organisms. In: Growth and Defense in Plants, Ecological Studies 220. Matyssek et al. Eds. Heidelberg, Germany: Springer Verlag, pp. 213-242.

  26. Hampp, R., Hartmann, A. and Nehls, U. 2012. The Rhizosphere: molecular interactions between microorganisms and roots. In: Growth and Defense in Plants, Ecological Studies 220 (eds. Matyssek et al.). Heidelberg, Germany: Springer Verlag, pp. 111-139.
  27. 2010

  28. Fekete A., Rothballer M., Hartmann A., and Schmitt-Kopplin P. 2010 Identification of bacterial autoinducers. In: Bacterial Signaling (eds.: R. Kr?mer, K. Jung). Weinheim, Germany: Wiley-VCH Verlag, pp. 95-111.
  29. 2009

  30. Hartmann, A., Schmid, M., van Tuinen, D., Berg, G. 2009 Plant-driven selection of microbes. In: Rhizosphere: achievements and challenges (eds.: Y. Dessaux, P. Hinsinger, P. Lemanceau), Springer-Verlag, Berlin, pp. 235-257
  31. Hartmann, A. 2009 Bacterial signalling in the rhizosphere and response patterns by plants. In: Microbial Technologies for Sustainable Agriculture – Exploring the hidden potentials of microbes. (eds.: F. Y. Hafeez, K. A. Malik, Y. Zafar), National Commission on Biotechnology, Crystal Printers, Islamabad, Pakistan, pp. 11-14
  32. Rothballer M., Schmid M., and Hartmann A. 2009 Diazotrophic bacterial endophytes in Gramineae and other plants. In: Microbiology Monographs: Prokaryotic endosymbionts in plants. (ed. K. Pawlowski). Heidelberg, Germany: Springer Verlag, pp. 273-302.

  33. Hartmann A., and Schmid M. 2009 Fluorescence in situ hybridization (FISH) technique for the investigation of the structure and function of microbial communities. In: A Textbook of Molecular Biotechnology (eds. Chauhan, A.K., Varma, A.) New Delhi, India: I. K. International Publishing House, chapter 55, pp. 1207-1221.
  34. 2008

  35. Schmid M., Rothballer M., Hai B., Fekete A., Li X., Englmann M., Frommberger M., Schmitt-Kopplin P., and Hartmann A. 2008 Quorum Sensing in Root-Associated and Endopytic Diazotrophs. In: Biological Nitrogen Fixation: Towards Poverty Alleviation through Sustainable Agriculture (eds.: F.D. Dakora, S.B.M. Chimphango, A.J. Valentine, C. Elmerich, W.E. Newton). The Netherlands: Springer, pp. 313-315.
  36. Hense B.A., Kuttler C., M?ller J., Rothballer M., Hartmann A., and Kreft J.-U. 2008. Efficiency Sensing ? was messen Autoinduktoren wirklich? Biospektrum 01.08: 18-21.
  37. 2007

  38. Schmid M., and Hartmann A. 2007 Molecular phylogeny and ecology of root associated diazotrophic alpha- and beta-proteobacteria.In: Associative and Endophytic Nitrogen-fixing Bacteria and Cyanobacterial Associations. (eds.: C. Elmerich, W. E. Newton). New York, USA: Springer Verlag, chapter 2, pp. 21-40.

  39. Hartmann A., Smalla K., and S?rensen J. 2007 Microbial diversity in the rhizosphere: highly resolving molecular methodology to study plant-beneficial rhizosphere bacteria. In: Biodiversity in Agricultural Production Systems. (eds.: G. Benckiser, S. Schnell). Boca Raton, Florida, USA: CRC Press and Taylor&Francis Group, pp. 101-130.

  40. Schmid M., Rothballer M., and Hartmann A. 2007 Analysis of microbial communities in soil microhabitats using fluorescence in situhybridization. In: Modern Soil Microbiology. 2nd edition (eds.: J. D. van Elsas, J. K. Jansson, J. Trevors). Boca Raton, Florida, USA: CRC-Press, chapter 12, pp.317-335.

  41. Rothballer M., and Hartmann A. 2007 In situ detection of bacterial gene expression in the rhizosphere using gfp promoter fusions. In: COST 631 ? Handbook of Methods Used in Rhizosphere Research. (eds. J. Luster, R. Finlay), Swiss Federal Research Institute WSL, Birmensdorf, Switzerland, Chapter 4.1.: Microbial growth and visualization of bacteria and fungi, pp. 403-404

  42. Van Elsas J.D., Torsvik V., Hartmann A., Ovreas L., and Jansson J. 2007 The bacteria and archeae in soil. In: Modern Soil Microbiolog, 2nd edition (eds. J. D. van Elsas, J. K. Jansson, J. Trevors). Boca Raton, Florida, USA: CRC-Press, chapter 12, pp. 317-335.

  43. Dazzo F.B., Schmid M., and Hartmann A. 2007 Immunofluorescence microscopy and fluorescence in situ hybridization combined withCMEIAS and other image analysis tools for soil- and plant-associated microbial autecology. In: Manual of Environmental Microbiology. 3rd edition (eds. C. J. Hurst, R. L. Crawford, J. L. Garland, D. A. Lipson, A.L. Mills, L. D. Stetzenbach) Washington DC, USA: ASM-Press, pp. 712-733.
  44. 2005

  45. Baldani J.I., Krieg N.R., Baldani V.L.D., Hartmann A., and D?bereiner J. 2005 Genus II. Azospirillum. In: Bergey?s Manual of Systematic Bacteriology, 2nd edition, Vol. II (eds.: D. J. Brenner, N. R. Krieg, J. T. Staley). New York, USA: Springer Verlag, pp. 7-26

  46. Moenne-Loccoz Y., Woo S.L., Okon Y., Bally R., Lorito M., Lemanceau P., and Hartmann A. 2005 Free-living plant-beneficial microorganisms and soil quality. In: Microbiological Methods for Assessing Soil Quality (eds.: J. Bloem, D. W. Hopkins, A. Benedetti). Wallingford, UK: CABI Publishing, chapter 9.5, p. 368

  47. Schmid M., Baldani J.I., and Hartmann A. 2005. The genus Herbaspirillum. In: The Prokaryotes. Volume 5: Proteobacteria: Alpha and Beta Subclasses (eds. M. Dworkin, S. Falkow, E. Rosenberg, K.-H. Schleifer, E. Stackebrandt). New York, USA: Springer Verlag, pp. 141-150.

  48. Schmid M., Selesi D., Rothballer M., Schloter M., Lee N., Kandeler E., and Hartmann A. 2006. Localization and visualization of microbial community structure and activity in soil microhabitats. In: Soil Biology. Volume 6. Intestinal Microorganisms of Soil Invertebrates (eds.: H. K?nig, A. Varma). New York, USA: Springer Verlag, pp. 439-461.
  49. 2004

  50. Hartmann A. 2004 Horizontaler Gentransfer: ein nat?rlicher Prozess. GSF-spezial "Gr?ne Gentechnik", S. 59-64

  51. Hartmann A., Gantner S., Schuhegger R., Steidle A., D?rr C., Schmid M., Dazzo F.B., Eberl L., and Langebartels C. 2004 N-Acyl homoserine lactones of rhizosphere bacteria trigger systemic resistance in tomato plants. In: Biology of Plant-Microbe Interactions. Volume 4 (eds.: B. Lugtenberg, I. Tikhonovich, N. Provorov). Saint Paul, Minnesota, USA: APS Press, pp. 554-556

  52. Hartmann A., Pukall R., Rothballer M., Gantner S., Metz S., Schloter M., and Mogge B. 2004 Microbial community analysis in the rhizosphere by in situ and ex situ application of molecular probing, biomarker and cultivation techniques. In: Plant Surface Microbiology (eds.: A. Varma, L. Abott, D. Werner, R. Hampp). Berlin, Germany: Springer Verlag, pp. 449-469.

  53. Schmid M., Rothballer M., A?mus B., Hutzler P., Schloter M., and Hartmann A. 2004 Detection of microbes by confocal laser scanningmicroscopy. In: Molecular Microbial Ecology Manual 2nd edition (eds.: G. A. Kowalchuk, F. J. De Bruijn, I. M. Head, A. D. L.Akkermans, J. D. van Elsas). Dordrecht, The Netherlands: Kluwer Academic Publishers, chapter 4.03, pp. 875-910.
  54. 2003

  55. Hartmann A., and Baldani J. I. 2003 The Genus Azospirillum. In: The Prokaryotes. Volume 5: Proteobacteria: Alpha and BetaSubclasses (eds. M. Dworkin, S. Falkow, E. Rosenberg, K.-H. Schleifer, E. Stackebrandt). New York, USA: Springer-Verlag, pp. 114-140.

  56. Shmid, M. and Hartmann, A. 2003. Molecular Phylogeny and ecology of root associated diazotrophic alfa- and beta proteobacteria. In: Associative and Endophytic Nitrogen-fixing Bacteria and Cyanobacterial Association. (Eds.) C. Elmerich and W. E. Newton. Kluwer Academic Publishers, Netherlands. Chapters 2. pp. 1-20.
  57. 2001

  58. Hartmann A., and Schloter M. 2001 Wirkungen auf die Bodenmikroflora. In: Handbuch der Umweltver?nderungen und ?kotoxikologie, Band II: Terrestrische ?kosysteme. (Hrsg. R. Guderian). Berlin, Deutschland: Springer-Verlag, Kapitel II 2.2, S. 91-106.
  59. 2000

  60. Eckert B., Kirchhof G., Stoffels M., Baldani J.I., Weber B.O., and Hartmann A. 2000 Neue diazotrophe Bakterien aus den Rohstoffpflanzen Miscanthus sinensis und Pennisetum purpureum. In: Rhizodeposition und Stoffverwertung (Hrsg. W. Merbach, L. Wittenmayer, J. Augustin). Stuttgart / Leipzig, Deuscthland: B.G. Teubner Verlag, S. 103-109

  61. Hartmann A., Chatzinotas A., A?mus B., and Kirchhof G. 2000 Molecular microbial ecology studies of diazotrophs associated with non-legumes with special reference to endophytic diazotrophs. In: Microbial Interactions in Agriculture and Forestry, Volume II (eds.: N.S. Subba Rao, Y.R. Dommergues). Enfield, New Hampshire, USA: Science Publishers, pp. 1-14

  62. Hartmann, A., Stoffels, M., Eckert, B., Kirchhof, G. and Schloter. M. 2000 Analysis of the presence and diversity of diazotrophic endophytes. In: Prokaryotic nitrogen fixation: A model system for the analysis of a biological process. (Ed.)E.W. Triplett. Horizon Scientific Press. UK. Chapter 41 pp. 727-736

  63. Hausner M., Lawrence J.R., Wolfaardt G.M., Schloter M., Seiler K.-P., and Hartmann A. 2000 The use of immunological techniques and scanning confocal laser microscopy for the characterization of Agrobacterium tumefaciens and Pseudomonas fluorescens in atrazine-utilizing biofilms. In: Biofilms: Investigative Methods & Applications (eds.: H.-C. Fleming, U. Szewzyk, T. Griebe). Lancaster, Pennsylvania,USA: Technomic Publishing Co., pp. 143-153.

  64. M?ller E., A?mus B., Hartmann A., and Seiler K.-P. 2000 The in situ detection of a microbial biofilm community on Karst rock coupon ina groundwater habitat. In: Biofilms: Investigative Methods & Applications (eds.: H.-C. Fleming, U. Szewzyk, T. Griebe). Lancaster, Pennsylvania, USA: Technomic Publishing Co., pp. 225-230.
  65. 1999

  66. Hartmann A., Schloter M., Bergm?ller C., M?lter K., Zelles L., and Munch J.C. 1999 Diversit?t der Mikroflora von B?den und Sedimenten als ?kotoxikologischer Belastungsparameter. In: ?kotoxikologie - ?kosystemare Ans?tze und Methoden. (Hrsg.: J. Oehlmann, B.Markert). Landsberg / Lech, Deutschland: Ecomed-Verlag, S. 200-207.
  67. 1997

  68. Hartmann, A., Assmus, B., Kirchhof, G. and Schloter, M. 1997 Direct approaches for studying soil microbes. In: Modern soil microbiology. van Elsas JD, Trevors JT, Wellington EMH (eds) Dekker, New York, pp 279-309

  69. Hartmann A., Lawrence J.R., A?mus B., and Schloter M. 1997 Detection of microbes by laser confocal microscopy. In: Molecular Microbial Ecology Manual (eds.: A. Akkermans, J.D. van Elsas, F.J. de Bruijns). Dordrecht, The Netherlands: Kluwer Academic Publishers, chapter 4.1.10., pp. 1-34.
  70. 1996

  71. Hartmann A. 1996 Biotechnological aspects of diazotrophic bacteria associated with rice. In:. Biological Nitrogen Fixation associated with Rice Production (eds.: M. Rahman et al.). Dordrecht, The Netherlands: Kluwer Academic Publishers, pp. 211-223

  72. Lebuhn M., and Hartmann A. 1996 Auxins, L-tryptophan and related indolic and phenolic catabolites. In: Methods in Soil Biology(eds.: F. Schinner, R. ?hlinger, E. Kandeler, R. Margesin). Berlin / Heidelberg, Germany: Springer Verlag, pp. 268-280.

  73. Schloter M., Bode W., and Hartmann A. 1996. Identification and quantification with monoclonal antibodies. In: Methods in Soil Biology (eds.: F. Schinner, R. ?hlinger, E. Kandeler, R. Margesin). Berlin / Heidelberg, Germany: Springer Verlag, pp. 41-46.
  74. 1995

  75. Hartmann, A., Baldani, J.-I., Kirchhof, G., A?mus, B., Hutzler, P., Springer, N., Ludwing, W., Baldani, V.-L. and Dobereiner, J. 1995. Taxonomic and ecologic studies of diazotrophic rhizosphere bacteria using phylogenetic probes. In: Azospirillum and related microorganisms. NATO ASI Series, ( I. Fendrik et al. eds) Vol. 37 pp. 543-547, Springer-Verlag Berin Heidelberg.

  76. Albers B.P., Hartmann A., and Beese F. 1995 Anaerobic heat output. In: Methods in Applied Soil Microbiology and Biotechnology(eds.: K. Alef, P. Nannipieri). London, UK: Academic Press, pp. 304-306.

  77. Steinberg C.E.W., Br?ggemann R., Hartmann A., Heller W., Kirchner M., Lienert D., M?ller K., Pestlin G., Scheunert I., Seiler K.-P., Ernst D., Spieser O.H., and Klein J. 1995. ?kotoxikologische Testverfahren. In: Handbuch des Umweltschutzes - 79. Erg. Lfd. 6/95. Landsberg / Lech, Deutschland: Ecomed-Verlag, S. 1-102.
  78. 1994

  79. Hartmann A. 1994. Molecular approaches for the investigation of the genetic composition in aquatic ecosystems. In: Acidification of Freshwater Ecosystems: Implication for the Future (eds.: C.E.W. Steinberg, R.F. Wright). Chichester, UK: John Wiley, pp. 247-257.

  80. Hartmann, A. and Zimmer, W. 1994 Physiology of Azospirillum. In: Azospirillum/plant associations. CRC, Boca Raton, Fla. Okon Y (ed). pp 15?39.
  81. 1993

  82. Hartmann A. 1993 Okologie von Mikroorganismen. In: Handbuch zur ?kologie (Hrsg.: W. Kuttler). Berlin, Deutschland: Analytica Verlag, pp. 235-240

  83. Schloter M., Bode W., and Hartmann A. 1993 Identifizierung und Quantifizierung von Bodenbakterien mit monoklonalen Antik?rpern. In: Biologische Arbeitsmethoden (2. Auflage) (Hrsg.: F. Schinner, R. ?hlinger, E. Kandeler, R. Margesin). Berlin, Deutschland: Springer Verlag, S. 44-50.



  1. Krauss-Etschmann, S., Schmitt-Kopplin, P. Schloter, M., Hartmann, A. 2017 Methods and compositions for treating inflammatory diseases. D-tryptophan as probiotic immunomodulatory substance. Patent for USA and Canada (US 15/708,902).