The "Environmental Microbiology" group strives to excel in the research of its graduate students and on "tailor-made" theses. Each of our students is required to publish his/her thesis or main findings in high impact, peer-reviewed scientific journals. "Instant" and "assembly line" theses are therefore, unavailable.

Graduated students (since 1992)



Gina Holguin collecting propagules of black mangroves from a flooded mangrove area.
Name: Gina Holguin
Degree: B.Sc. (Diploma) in Marine Biology
Years: 1992-1993
Graduate school: The Autonomus University of Baja California Sur. La Paz, Mexico.
Thesis: Two new nitrogen-fixing bacteria from the rhizosphere of mangrove trees: Their isolation, identification and in vitro interaction with rhizosphere Staphylococcus sp.
Publication from thesis:
  1. Holguin, G., Guzman, M.A. y Bashan, Y. 1992. Two new nitrogen-fixing bacteria from the rhizosphere of mangrove trees, isolation, identification and in vitro interaction with rhizosphere Staphylococcus sp. FEMS Microbiology Ecology 101: 207-216.

Name: Patricia Vazquez Correa
Degree: B. Sc. (Diploma) in Marine Biology
Years: 1994-1996
Graduate school: The Autonomus University of Baja California Sur. La Paz, Mexico.
Thesis: Inorganic-phosphate solubilizing bacteria associated with the rhizosphere of mangroves; Avicennia germinans (L.) L and Laguncularia racemosa (L.) Gaertn
collecting black mangrove seedlings

Patricia Vazquez (student) and Gina Holguin (tutor) collecting
black mangrove seedlings for isolation of phosphate solubilizing bacteria.
Publication from thesis:
  1. Vazquez, P., Holguin, G., Puente, M.E., Lopez-Cortes, A. y Bashan, Y. 2000. Phosphate-solubilizing microorganisms associated with the rhizosphere of mangroves in a semiarid coastal lagoon. Biology and Fertility of Soils 30 : 460-468.

Name: Adriana Rojas
Degree: B. Sc. (Diploma) in Marine Biology
Years: 1998-2001
Graduate school: The Autonomus University of Baja California Sur. La Paz, Mexico.
Thesis: Synergism and antagonism between diazotrofic bacteria and phosphate-solubilizing bacteria isolated from mangrove's roots.
Publication from thesis:
  1. Rojas, A., Holguin, G., Glick, B.R. y Bashan, Y. 2001. Synergism between Phyllobacterium sp. (N2-fixer) and Bacillus licheniformis (P-solubilizer), both from a semiarid mangrove rhizosphere. FEMS Microbiology Ecology 35: 181-187

Name: Juan-Pablo Hernandez
Degree: B.Sc. (Diploma) in Biology
Years: 1998-2001
Graduate school: Pontificia Universidad Javeriana, Bogota, Colombia.
Thesis: co-immobilized bacteria and microalgae to remove phosphorus from agroindustrial wastewaters.
juan pablo hernandez

Juan-Pablo Hernandez preparing mini bioreactors with microalgae for wastewater treatment
Publication from thesis:
  1. Gonzalez-Bashan, L.E., Lebsky, V.K., Hernandez, J.P., Bustillos, J.J. y Bashan, Y. 2000. Change in the metabolism of the microalga Chlorella vulgaris when coimmobilized in alginate with the nitrogen-fixing Phyllobacterium myrsinacearum. Canadian Journal of Microbiology 46: 653-659.

Name: Luis Alonso Leyva
Degree: Diploma in Biochemestry Engineering
Years: 2004-2005
Graduate school: Instituto Tecnologico de Los Mochis, Los Mochis, Sinaloa, Mexico.
Thesis: Immovilization fo Azospirillum brasilense Cd in alginate microbeads; production and evaluation of its effec on wheat plants.
Publications from thesis:
  1. Bashan, Y., Hernandez, J.P., Leyva, L.A. y Bacilio, M. 2002. Alginate microbeads as inoculant carrier for plant growth-promoting bacteria. Biology and Fertility of Soils 35: 359-368.
  2. Bashan, Y., Bustillos, J.J., Leyva, L.A., Hernandez, J-P., and Bacilio M. 2006. Increase in auxiliary photoprotective photosynthetic pigments in wheat seedlings induced by Azospirillum brasilense.Biology and Fertility of Soils 42: 279-285

Name: Adan Trejo Rangel
Degree: Diploma in Biology
Years: 2001-2005
Graduate school: The Autonomus Metropolitan University (UAM), Xochimmilco, Mexico City, Mexico.
Thesis: Characterization of Chlorella sorokiniana immobilized with Azospirillum brasilense, for wastewater treatment under extreme desert conditions.
Adan Working

Juan-Pablo Hernandez (left) and Adan Trejo (right) evaluating a high light
intensity- high temperature photobioreactor for wastewater treatment with microalgae.
Publication from thesis:
  1. de-Bashan, L.E., Trejo, A., Huss, V.A.R., Hernandez, J.-P. Bashan, Y. 2008. Chlorella sorokiniana UTEX 2805, a heat and intense, sunlight-tolerant microalga with potential for removing ammonium from wastewater. Bioresource Technology 99: 4980-4989

Name: Emiro Ortiz
Degree: Diploma in Agronomic Engineering
Years: 2002-2006
Graduate school: National University of Colombia, Bogota, Colombia.
Thesis: Effect of the inoculation with Bacillus subtilis var2 and Bacillus pumilus isolated from the giant cactus pachycereus pringlei on the growth of sorghum
Publication from thesis:
    None so far

Name: Yaneth Rodriguez
Degree: Diploma in Agronomic Engineering
Years: 2002-2006
Graduate school: National University of Colombia, Bogota, Colombia.
Thesis: Effect of nitrogen fixation of Bacillus subtilis var2 on the growth of the microalgae Chlorella vulgaris
Publication from thesis:
  1. Hernandez, J.-P., de-Bashana,L.E., Rodriguez, D. J., Rodriguez, Y. and Bashan, Y. 2009 Growth promotion of the freshwater microalga Chlorella vulgaris by the nitrogen-fixing, plant growth-promoting bacterium Bacillus pumilus from arid zone soils. European Journal of Soil Biology 45: 88–93 Original version is available at: http://www.elsevier.com/locate/ejsobi

johana preparing

Johana Rodriguez preparing bioreactors
with microalgae and bacteria.
Name: Deicy Johana Rodriguez Jimenez
Degree: Diploma in Biology
Years: 2005-2008
Graduate school: University of Tolima, Ibague, Colombia
Thesis: Evaluation of combined systems of Chlorella vulgaris and Chlorella sorokiniana coimmobilized in alginate beads with Bacillus subtilis var2 and P. chitinolyticus for removal of nitrogen and phosphorus from wastewater.
johana preparing

Johana Rodriguez and her winning poster.
Award:
  1. Best poster presentation of a graduate student: The poster: Rodríguez D.J, Hernández J.P y Bashan Y. 2008. "Evaluación de sistemas combinados de Chlorella sorokiniana coinmovilizada con Bacillus sp. y Paenibacillus sp. en esferas de alginato para el tratamiento biológico de agua residual" presented by Johana Rodriguez won the first prize award for poster presentation in: Congreso Internacional Gestión Sostenible del Agua (International Congress for sustainable management of water). 16-18.7.2008. Medellin, Colombia.

Publication from thesis:
  1. Hernandez, J.-P., de-Bashana,L.E., Rodriguez, D. J., Rodriguez, Y. and Bashan, Y. 2009 Growth promotion of the freshwater microalga Chlorella vulgaris by the nitrogen-fixing, plant growth-promoting bacterium Bacillus pumilus from arid zone soils. European Journal of Soil Biology 45: 88–93 Original version is available at: http://www.elsevier.com/locate/ejsobi

Name: Manuel Antonio Ruíz
Degree: Diploma in Marine Biology
Years: 2004-2007
Graduate school: The Autonomus University of Baja California Sur. La Paz, Mexico.
Thesis: Lateral transfer of antibiotic resistance genes in bacteria isolated from the rhizosphere of mangroves Avicennia germinans .
Publication from thesis: None so far (tutor passed away before preparing a manuscript)

Name: Alfredo Orrala
Degree: Diploma in System Engineering
Years: 2010
Graduate school: Technological Institute of La Paz, Mexico
Thesis: Development of computerized quantification program for microscopic images of bacteria and microalgae
alfredo´s program screen

View of the screen program of Alfredo.

noga working
Noga at work with the laser microscopes at Helmholtz Zentrum, Munich, Germany
Name: Noga Bashan
Degree: Diploma in Environmental Engineering
Years: 2007-2011
Graduate school: Israel Institute of Technology (Technion), Haifa, Israel
Thesis: Studies of the interaction between bacteria and microalgae using the molecular technique "Fluorescent in situ hybridization" and visualized by laser microscopy
noga working
Noga at work with the laser microscopes at Helmholtz Zentrum, Munich, Germany

jairo encapasulados, Universidad El Bosque
Jairo is preparing alginate microbeads of Azospirillum brasilense
Name: Edgar J. Gonzalez Infante
Degree: Diploma in Biology
Years: 2010-2015
Graduate school: University El Bosque, Bogota, Colombia
Thesis: Formulation of bacterial inoculants of Azospirillum brasilense Cd for revegetation of arid ecosystems
jairo encapasulados, Universidad El Bosque
Honorific mention by the University of El Bosque, Bogota

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