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2011

1. Park, S.C., Kim, Y.H., Jeong, J.C., Kim, C.Y., Lee, H.S., Bang, J.W. and Kwak, S.S. 2011 Sweetpotato late embryogenesis abundant 14 (IbLEA14) gene influences lignification and increases osmotic- and salt stress-tolerance of transgenic calli. Planta 234: 621-634

2. Kim, Y.H., Kim, M.D., Choi, Y.I., Park, S.C., Yun, D.J., Noh, E.W., Lee, H.S. and Kwak, S.S. 2011 Transgenic poplar expressing Arabidopsis NDPK2 enhances growth as well as oxidative stress tolerance. Plant Biotechnology Journal 9: 334-347

3. Kim, M.D., Kim, Y.H., Kwon, S.Y., Lee, S.Y., Kwak, S.S. and Lee, H.S. 2011 Overexpression of 2-Cys peroxiredoxin enhances tolerance to MV-mediated oxidative stress and high temperature in transgenic potato plants. Plant Physiology and Biochemistry 49: 891-897

4. Ahn, Y.O., Kim, S.H., Lee, H.S. and Kwak, S.S. 2011 Three Brassica rapa metallothionein genes are differentially regulated under various stress. (in press)

5. Kim, Y.H., Kim, M.D., Park, S.C., Yang, G.S., Lee, H.S. and Kwak, S.S. 2011 SCOF-1-expressing transgenic sweetpotato plants show enhanced tolerance to low-temperature stress. (in press)

   2010

6. Ahn, Y.O., Kim, S.H., Kim, C.Y., Lee, J.S., Kwak, S.S. and Lee, H.S. 2010 Exogenous sucrose utilization and starch biosynthesis among sweetpotato cultivars. Carbohydrate Research 345: 55-60

7. Ahmad, R., Kim, Y.H., Kim, M.D., Kwon, S.Y., Chung, W.I., Lee, H.S. and Kwak, S.S. 2010 Simultaneous expression of choline oxidase, superoxide dismutase, and ascorbate peroxidase in potato plant chloroplasts provides synergistically enhanced protection against various abiotic stresses. Physiologia Plantarum 138: 520-533

8. Kim, K.H., Alam, I., Lee, K.W., Sharmin, S.A., Kwak, S.S., Lee, S.Y. and Lee, B.H. 2010 Enhanced tolerance of transgenic tall fescue plants overexpressing 2-Cys peroxiredoxin against methyl viologen and heat stresses. Biotechnology Letters 32: 571-576

9. Lee, Y.P., Baek, K.H., Lee, H.S., Kwak, S.S., Bang, J.W. and Kwon, S.Y. 2010 Tobacco seeds simultaneously over-expressing Cu/Zn-superoxide dismutase and ascorbate peroxidase display enhanced seed longevity and germination rates under stress conditions. Journal of Experimental Botany 61: 2499-2506

10. Kim, C.Y., Ahn, Y.O., Kim, S.H., Kim, Y.H., Lee, H.S., Catanach, A.S., Jacobs, J.M.E., Conner, A.J. and Kwak, S.S. 2010 The sweet potato IbMYB1 gene as a potential visible marker for sweetpotato intragenic vector system. Physiologia Plantarum 139: 229-240.

11. Kim YH, Lee HS, Kwak SS. Differential responses of sweetpotato peroxidases to heavy metals. Chemosphere 81: 79-85

12. Kim MD, Kim YH, Kwon SY, Yun DJ, Kwak SS, Lee HS (2010) Enhanced tolerance to methyl viologen-induced oxidative stress and high temperature in transgenic potato plants overexpressing the CuZnSOD, APX and NDPK2 genes. Physiologia Plantarum 140: 153-162

13. Wu XB, Cheng YJ, Deng XP, Kwak SS (2010) Effect of foliar spraying of H2O2 and Cu/Zn SOD and APX gene transfered in chloroplasts on the recoverability of sweetpotato after chilling stress. Scientia Agricultura Sinica 43:1379-1388

14. Lu YY, Deng XP, Kwak SS (2010) Overexpression of CuZn superoxide dismutase (CuZn SOD) and ascorbate peroxidase (APX) in transgenic sweetpotato enhances tolerance and recovery from drought stress. African Journal of Biotechnology 9: 8378-8391

    2009

15. Ryu SH, Kim YH, Kim CY, Park SY, Kim SH, Kwon SY, Lee HS, Bang JW, KwakSS (2009) Molecular characterization of the sweetpotato peroxidase SWPA4 promoter which responds to abiotic stresses and pathogen infection. Physiologia Plantarum 135: 390-399

16. Kim SH, Song WK, Kim KY, Kim YH, Kwon SY, Lee HS, Lee IC, Kwak SS (2009) Characterization of full-length enriched expressed sequence tags of dehydration-treated white fibrous roots of sweetpotato. BMB Reports 42: 271-276

17. Wang WB, Kim YH, Lee HS, Kim KY, Deng XP, Kwak SS (2009) Analysis of antioxidant enzyme activity during germination of alfalfa under salt and drought stresses. Plant Physiology and Biochemistry 47: 570-577

18. Kim YH, Kim CY, Lee HS, Kwak SS (2009) Changes in activities of antioxidant enzymes and their gene expression during leaf development of sweetpotato. Plant Growth Regulation 58: 235-241

19. Kim YH, Lim S, Yang KS, Kim CY, Kwon SY, Lee HS, Wang X, Zhou Z, Ma D, Yun DJ, Kwak SS (2009) Expression of Arabidopsis NDPK2 increases antioxidant enzyme activities and enhanced tolerance to multiple environmental stresses in transgenic sweetpotato plants. Molecular Breeding 24: 233-244

20. Wang WB, Kim YH, Deng XP, Kwak SS, Wang ZH, Zhao ZP (2009) Physiological and biological responses of alfalfa shoots and roots to salt stress. Journal of Northwest A&F University 37:217-223

21. Wang WB, Kim YH, Lee HS, Deng XP, Kwak SS (2009) Differential antioxidation activities in two alfalfa cultivars under chilling stress. Plant Biotechnology Reports 3: 301-307

    2008

22. Kim, Y.H., Kim, C.Y., Song, W.K., Park, D.S., Kwon, S.Y., Lee, H.S., Bang, J.W., Kwak, S.S. (2008) Overexpression of sweetpotato swpa4 peroxidase results in increased hydrogen peroxide production and enhances stress tolerance in tobacco. Planta 227: 867-881

23. Kim YH, Ryu SH, Kim KY, Song WK, Kwon SY, Lee HS, Bang JW, Kwak SS (2008) Molecular characterization of a cDNA encoding DRE-binding transcription factor from dehydration-treated fibrous roots of sweetpotato. Plant Physiology and Biochemistry 46: 196-204

24. Kim YH, Ryu SH, Kim KY, Song WK, Kwon SY, Lee HS, Bang JW, Kwak SS (2008) Molecular cloning of three novel peroxidase cDNAs from dehydration-treated fibrous roots of sweetpotato and their differential expression in response to stress. BMB Reports 41: 259-265

25. Ahmad R., Kim MD, Back KH, Kim HS, Lee HS, Kwon SY, Murata N, Chung WI, Kwak SS (2008) Stress-induced expression of choline oxidase in potato plant chloroplasts confers enhanced tolerance to oxidative, salt, and drought stresses. Plant Cell Reports 27: 687-698

26. Uddin MD, Qi Y, Yamada S, Shibuya I, Deng XP, Kwak SS, Kaminaka H, Tanaka K (2008) Overexpression of a new rice vacuolar antiporter regulating protein OsARP improves salt tolerance in tobacco. Plant Cell Physiology 49: 880-890

27. Tang L, Kim MD, Yang KS, Kwon SY, Kim JS, Yun DJ, Kwak SS, Lee HS (2008) Enhanced tolerance of transgenic potato plants overexpressing nucleoside diphosphate kinase 2 against multiple environmental stresses. Transgenic Research 17: 705-715

28. Tang L, Tang H, Kwak SS, Lee HS, Wang SY, Yang XL (2008) Potato plants improving oxidative stress and salt tolerance by gene transfer both of Cu/Zn superoxide dismutase and ascorbate peroxidase. China Biotechnology 28: 25-31

29. Ahsan N, Lee DG, Alam I, Kim PJ, Lee JJ, Ahn YO, Kwak SS, Lee IJ, Bahk JD, Kang KY, Renaut J, Komatsu S, Lee BH (2008) Comparative proteomic study of arsenic-induced differentially expressed proteins in rice roots reveals glutathione plays a central role during As stress. Proteomics 8: 3561-3576

30. Jin H, Plaha P, Park JY, Hong CP, Lee IS, Yong ZH, Jiang GB, Kwak SS, Liu SK, Lim YP (2008) Expression profiles of genes in root and shoot induced by NaCl and Na₂CO₃ stresses using cDNA microarray in Leymus chinensis. Plant Science 175: 784-792

31. Ahmad R, Kim YH, Kim MD, Phung MN, Chung WI, Lee Hs, Kwak SS, Kwon SY (2008) Development of selection marker-free transgenic potato plants with enhanced tolerance to oxidative stress. Journal of Plant Biology 51: 401-407

    2007

32. Lee J, Nam J, Park HC, Na G, Miura K, Jin JB, Yoo CY, Baek DW, Jeong JC, Kwak SS, Lee SY, Salt DE, Mengiste T,Gong Q,, Ma S, Bohnert HJ, Bressan RA,Hasegawa PM, and Yun DJ (2007) Salicylic acid-mediated innate immunity in Arabidopsis is regulated by SIZ1 SUMO E3 ligase. Plant Journal 49: 79-90.

33. Lim S, Kim YH, Kim SH, Kwon SY, Lee HS, Kim JG, Cho CY, Paek KY, Kwak SS (2007) Enhanced tolerance of transgenic sweetpotato plants expressing both superoxide dismutase and ascorbate peroxidase in chloroplasts against methyl viologen-mediated oxidative stress. Molecular Breeding 19: 227-239.

34. Lee YP, Kim SH, Bang JW, Lee HS, Kwak SS, Kwon SY (2007) Enhanced tolerance to oxidative stress in transgenic tobacco plants expressing three antioxidant enzymes in chloroplasts. Plant Cell Reports 26: 591-598

35. Shin YM, Choe G, Shin BC, Yi GB, Yun PY, Yang KY, Lee JS, Kwak SS, Kim KM (2007) Selection of nptII transgenic sweetpotato plants using G418 and paromomycin. Journal of Plant Biology 50: 206-212.

36. Um MO, Park TI, Kim YJ, Seo HY, Kim JG, Kwon SY, Kwak SS, Yun DJ, Yun SJ (2007) Particle bombardment-mediated transformation of barley with an Arabidopsis NDPK2 cDNA. Plant Biotechnology Reports 1: 71-77

37. Liu HY, Yu Xin, Cui DY, Sun MH, Sun WN, Tang ZC, Kwak SS, Su WA(2007) The role of water channel proteins and nitric oxide signaling in rice seed germination. Cell Research 17: 638-649

38. Tang L, Tang H, Wang SY, Yang XI, Lee HS, Kwak SS (2007) Agrobacterium-mediated transformation of an ecologically important potato cultivar using internodal stem explants. China Biotechnology 27: 80-87

39. Lee SH, Ahsani N, Lee KW, Kim DH, Lee DG, Kwak SS, Kwon SY, Kim TH, Lee BH (2007) Simultaneous overexpression of both CuZn superoxide dismutase and ascorbate peroxidase in transgenic tall fescue plants confers increased tolerance to a wide range of abiotic stresses. Journal of Plant Physiology 164: 1626-1638

40. Kim YH, Lim S, Han SH, Lee JC, Song WK, Bang JW, Kwon SY, Lee HS, Kwak SS (2007) Differential expression of ten sweetpotato peroxidases in response to sulfur dioxide, ozone, and ultraviolet radiation. Plant Physiology and Biochemistry 45: 908-914

    2006

41. Le, J., Nam, J., Park, H. C., Na, G., Miura, K., Jin, J. B., Yoo, C. Y., Baek, D., Kim, D. H., Jeong, J. C., Kim, D., Lee, S. Y., Salt, D. E., Mengiste, T., Gong, Q., Ma, S., Bohnert, H. J., Kwak, S. S., Bressan, R. A., Hasegawa, P. M. and Yun, D.-J. 2006 Salicylic acid-mediated innate immunity in Arabidopsis is regulated by SIZ1 SUMO E3 ligase. The Plant Journal 49: 79–90

42. Kang, C.H., Jung, W.Y., Kang, Y.H., Kim, D.G., Jeong, J.C., Baek, D.W., Jin, J.B., Chung, W.S., Mengiste, T., Koiwa, H., Kwak, S.S., Bahnk, J.D., Lee, S.Y., Nam, J.S., Yun, D.J., Cho, M.J. 2006 AtBAG6, a novel calmodulin-binding protein, induces programmed cell death in yeast and plants. Cell Death and Differentiation 13: 84-95

43. Jin, H., Plaha, P., Park, J.Y., Hong, C.P., Lee, I.S., Yang, Z.H., Jiang, G.B., Kwak, S.S., Liu, S.K., Lee, J.S., Kim, Y.A., Lim, Y.P. 2006 Comparative EST profiles of leaf and root Leymus chinensis, a xerophilous grass adapted to high pH sodic soils. Plant Science 170: 1081-1086

44. Lee, S.H., Lee, D.G., Woo, H.S., Lee, K.W., Kim, D.H., Kwak, S.S., Kim, J.S., Kim, H., Ahsan, N., Choi, M.S., Yang, J.K., Lee, B.H. 2006 Production of transgenic orchardgrass via Agrobacterium-mediated transformation of seed-derived callus tissues. Plant Science 171: 408-414

45. Lin, Y., Deng, X.P., Kwak, S.S. and Tanaka, K. 2006 Enhanced drought tolerance in transgenic sweetpotato expressing both Cu/Zn superoxide dismutase and ascorbate peroxidase. Journal of Plant Phsiology and Molecular Biology 32: 451-457

46. Lee, Y.K., Kim, I.J., Kim, G.T., Park, J.M., Kwak, S.S., Choi, G. and Chung, W.I. 2006 LONGIFOLIA1 and LONGIFOLIA2, two homologous proteins, regulate longitudinal cell elongation independent of ROTUNDIFOLIA3. Development 133: 4305-4314

47. Tang, L., Kwon, S.Y., Kim, J.S., Choi, J.S., Cho, K.Y., Sung, C.K., Kwak, S.S. and Lee, H.S. 2006 Enhanced tolerance of trannsgenic pottao plants expressing both superoxide dismutase and ascorbate peroxidase in chloroplasts against oxidative stress and high temperature. Plant Cell Reports 25: 1380-1386

48. Jo, S.H., Kwon, S.Y., Kim, J.W., Lee, K.T., Kwak, S.S. and Lee, H.S. 2006 High-yield production of fuctional human lactoferrin in transgenic cell cultures of Siberian ginseng (Acantopanax senticosus) Biotechnology and Bioprogress Engineering 11: 442-448

    2005

49. Shin, S.Y., Lee, H.S., Kwon, S.Y., Kwon, S.T. and Kwak, S.S. 2005 Molecular characterization of a cDNA encoding copper/zinc superoxide dismutase from cultured cells of Manihot esculenta. Plant Physiology and Biochemistry 43: 55-60

50. Wang, F.Z., Wang, Q.B., Kwon, S.Y., Kwak, S.S. and Su, W.A. 2005 Enhanced drought tolerance of transgenic rice plants expressing a pea manganese superoxide dismutase. Journal of Plant Physiology 162: 465-472

    2004

51. Kim, J.S., Yun, B.W., Choi, J.S., Kim, T.J., Kwak, S.S. and Cho, K.Y. 2004 Death mechanism caused by carotenoid biosyntheis inhibitors in green and in undeveloped plant tissues. Pesticide Biochemistry and Physiology 78: 127-139

52. Park, S.Y., Ryu, S.H., Jang, I.C., Kwon, S.Y., Kim, J.G. and Kwak, S.S. 2004 Molecular cloning of a cytosolic ascorbate peroxidase from cell cultures of sweetpotato and its expression in response to stress. Molecular Genetics and Genomics 271: 339-346

53. Jang, I.C., Park, S.Y., Kwon, S.Y., Kim, J.G. and Kwak, S.S. 2004 Differential expression of ten sweetpotato peroxidase genes in response to bacterial pathogen, Pectobacterium chrysanthemi. Plant Physiology and Biochemistry 42: 451-455

54. Lian, H.L., Yu, X., Ye, Q., Kwak, S.S., Su, W.A. and Tang, Z.C. 2004 The role of aquaporin RWC3 in drought avoidance of rice. Plant and Cell Physiology 45: 481-489

55. Pyon, J.Y., Piao, R.Z., Roh, S.W., Shin, S.Y. and Kwak, S.S. 2004 Differential levels of antioxidants in paraquat-resistant and -susceptible Erigeron canadensis biotypes in Korea. Weed Biology and Management 4: 75-80

56. Shin, D.J., Koo, Y.D., lee, J.Y., Lee, H.J., Baek, D.W., Lee, S.C., Cheon, C.I., Kwak, S.S., Lee, S.Y. and Yun, D.J. 2004 Athb-12, a homeobox-leucine zipper domail protein from Arabidopsis thaliana, increases salt tolerance in yeast by regulating sodium exclusion. Biochemical and Biophysical Research Communications 323: 534-540

57. Kim, Y.H., Kim, Y.H., Kwak, S.S., Kwon, S.Y., Bae, J.M., Lee, B.R., Meen, B.G., Huh, G.H. 2004 Alterations in intracellular and extracelluar activities of antioxidant enzymes during suspension culture of sweetpotato. Phytochemistry 65: 2471-2476

58. Baek, D., Nam, J., Koo, Y.D., Kim, D.H., Lee, J., Jeong, J.C., Kwak, S.S., Chung, W.S., Lim, C.O., Lee, S.Y., Kawai, M., Uchimiya, H., Yun, D.J. 2004 Bax-induced cell death of Arabidopsis is mediated through reactive oxygen-dependent and –independent processes. Plant Molecular Biology 56: 15-27

    2003

59. Moon, H.J., Lee, B.Y., Choi, G.T., Shin, D.J., Theertha Prasad, D., Lee, O.S., Kwak, S.S., Kim, D.H., Nam, J.S., Bahk, J.D., Hong, J.C., Lee, S.Y., Cho, M.J., Lim, C.O., Yun, D.J. 2003 Nucleoside diphosphate kinase 2 interacts with two oxidative stress-activated mitogen-activated protein kinases to regulate cellular redox state and enhances multiple stress tolerance in transgenic plants. Proceedings of the National Academy of Sciences of the United States 100: 358-363

60. Lee, O.S., Lee, B.Y., Park, N.M., Koo, J.C., Kim, Y.H., Theertha Prasad, D., Chandrakant, K., Chun, H.J., Jeong, B.R., Kim, D.H., Nam, J.S., Yun, J.G., Kwak, S.S., Cho, M.J. and Yun, D.J. 2003 Pn-AMPs, the hevein-like proteins from Pharbitis nil confers disease resistance against phytopathogenic fungi in tomato, Lycopersicum esculentum. Phytochemistry 62: 1073-1079

61. Choi, S.M., Lee, O.S., Kwon, S.Y., Kwak, S.S., Yu, D.Y. and Lee, H.S. 2003 High expression of a human lactoferrin tobacco cell cultures. Biotechnology Letters 25: 213-218

62. Kwon, S.Y., Choi, S.M., Ahn, Y.O., Lee, H.S., Lee, H.B., Park, Y.B. and Kwak, S.S. 2003 Enhanced stress-tolerance of transgenic tobacco plants expressing a human dehydroascorbate reductase gene. Journal of Plant Physiology 160: 347-353

63. Kim, K.Y., Kwon, S.Y., Lee, H.S., Hur, Y.K., Bang, J.W. and Kwak, S.S. 2003 A novel oxidative stress-inducible peroxidase promoter from sweet potato: molecular cloning and characterization in transgenic tobacco plants and cultured cells. Plant Molecular Biology 51: 831-838

64. Lee, H.S., Kwon, E.J., Jeong, Y.J., Kwon, S.Y., Lee, E.M., Jo, M.H., Kim, H.S., Woo, I.S. and Kwak, S.S. 2003 Transgenic cucumber fruits that produce high levels of an anti-aging superoxide dismutase. Molecular Breeding 11: 213-220

65. Park, S.Y., Ryu, S.H., Kwon, S.Y., Lee, H.S., Kim, J.G., Kwak, S.S. 2003 Differential expression of six novel peroxidase cDNAs derived from sweetpotato cell cultures in response to stress. Molecular Genetics and Genomics 269: 542-552

66. Choi, S.M., Lee, O.S., Kwon, S.Y., Kwak, S.S. and Lee, H.S. 2003 Transgenic ginseng cell lines that produce high levels of a human lactoferrin. Planta Medica 69:1005-1008

    2002

67. Kim, T.H., Jung, J.K., Kwak, S.S., Nam, S.W., Chun, M.J. and Park, Y.H. 2002 Heterologous expression and secretion of sweet potato peroxidase isoenzyme A1 in recombinant Saccharomyces cerevisiae. Biotechnology Letters 24: 279-286

68. Kwon, S.Y., Jeong, Y.J., Lee, H.S., Kim, J.S., Cho, K.Y., Allen, R.D., Kwak, S.S. 2002 Enhanced tolerance of transgenic tobacco plants expressing both superoxide dismutase and ascorbate peroxidase in chloroplasts against methyl viologen-mediated oxidative stress. Plant, Cell, and Environment 25: 873-882

69. Lee, J.Y., Lee, B.Y., Shin, D.J., Kwak, S.S., Bahk, J.D., Lim, C.O. and Yun, D.J. 2002 Carnitine uptake by AGP2 in yeast Saccharomyces cerevisiare is dependent on HOG kinase pathway. Molecules and Cells 13: 407-412

    2001

70. Kwon, S.Y., Ahn, Y.O., Lee, H.S. and Kwak, S.S. 2001 Biochemical characterization of transgenic tobacco plants expressing a human dehydroascorbate reductase gene. Journal of Biochemistry and Molecular Biology 34: 316-321.

    2000

71. Yun, B.W., Huh, G.H., Lee, H.S., Kwon, S.Y., Jo, J.K., Kim, J.S., Cho, K.Y. and Kwak, S.S. 2000 Differential resistance to methy viologen in transgenic tobacco plants that express sweet potato peroxidases. Journal of Plant Pjysiology 156: 504-509

72. Kim, K.Y., Kwon, H.K., Kwon, S.Y., Lee, H.S., Hur, Y. and Kwak, S.S. 2000 Differential expressions of four sweet potato peroxidase genes in response to abscisic acid and ethephon. Phytochemistry 54: 19-22

73. Kwon, S.Y., An, C.S., Liu, J.R., Kwak, S.S., Lee, H.S., Kim, J.K. and Paek, K.H. 2000 Molecular cloning of a cDNA encoding ribosome inactivating protein from Amaranthus viridis and its expression in E. coli. Molecular and Cells 10: 8-12

74. Kim, J.W., Han, S.K., Kwon, S.Y., Lee, H.S., Lim, Y.P., Liu, J.R., Kwak, S.S. 2000 High frequency shoot induction and plant regeneration from cotyledonary hypocotyl explants of cucumber (Cucumis sativus L.) seedlings. Journal of Plant Physiology 157: 136-139

    1999

75. Kim, K.Y., Huh, G.H., Lee, H.S., Kwon, S.Y., Hur, Y., Kwak, S.S. 1999 Molecular characterization of two anionic peroxidase cDNAs isolated from suspension cultures of sweet potato. Molecular General and Genetics 261: 941-947

76. Ahn, Y.O., Kwon, S.Y., Lee, H.S., Park, I.H. and Kwak, S.S. 1999 Biosynthesis and metabolism of vitamin C in suspension cultures of Scutellaria baicalensis. Journal of Biochemistry and Molecular Biology 32: 451-455

77. Lee, H.S., Kim, K.Y., You, S.H., Kwon, S.Y. and Kwak, S.S. 1999 Molecular charcaterization and expression of a cDNA encoding copper/zinc superoxide dismutase from cultured cells of cassava (Manihot esculenta Crantz). Molecular General and Genetics 262: 807-814

    1998

78. Huh, G.H., Yun, B.Y., Lee, H.S., Jo, J.K. and Kwak, S.S. 1998 Overproduction of sweet potato peroxidases in transgenic tobacco plants. Phytochemistry. 47: 695-700

79. Jung, K.H., Kwak, S.S., and Liu, J.R. 1998 Process for biomass estimation considering the changes in biomass volume during high density culture of hairy roots. J Biotechnol. Bioeng. 85: 454-457

80. Yun, B.Y., Huh, G.H., Kwon, S.Y., Lee, H.S., Jo, J.K. and Kwak, S.S. 1998 Antioxidant enzymes in Nicotiana cells containing an Ipomoea peroxidase gene. Phytochemistry. 48: 1287-1290

81. Kwak, S.S. and Yun, B.Y. 1998 Molecular breeding of environmental stress tolerant plant with using peroxidases of sweet potato. Chemical Regulation of Plants. 32(2): 127-130.

    1997

82. Huh, G.H., Lee, S.J., Bae, Y.S., Liu, J.R. and Kwak, S.S. 1997 Molecular cloning and characterization of anionic and neutral peroxidase cDNAs from sweet potato suspension-cultured cells and their differential expression in response to stress. Molecular General and Genetics 255: 382-391

    1995

83. Choi, M.S., Kwak, S.S., Liu, J.R., Park, Y.G., Lee, M.K. and Ahn, Y.H. 1995 Taxol and related compounds in Korean native yews (Taxus cuspidata). Planta Medica 61:264-266.

84. Kwak, S.S., Kim, S.K., Lee, M.S., Jung, K.H., Park, I.H. and Liu, J.R. 1995 Three acidic peroxidases from suspension-cultures of sweet potato. Phytochemistry 39:981-984

85. Kwak, S.S., Choi, M.S., Lee, M.K., Park, Y.G. and Liu, J.R. 1995 Taxol contents in the seeds of Taxus spp. Phytochemistry. 40:29-32

86. Jung, K.H., Kwak, S.S., Choi, C.Y. and Liu, J.R. 1995 An interchangeable system of hairy root and cell suspension culture in Catharanthus roseus for indole alkaloid production. Plant Cell Reports. 15:51-54.

87. Kwak, S.S., Kim, S.K., Park, I.H. and Liu, J.R. 1996 Enhancement of peroxidase activity by stress-related chemicals in suspension cultures of sweet potato. Phytochemistry. 43:565-568

    1994

88. Jung, K.H., Kwak, S.S., Choi, C.Y. and Liu, J.R. 1994 Development of two stage culture process by optimization of inorganic salts for improving catharanthine production in hairy root cultures of Catharanthus roseus. Journal of Fermentation and Bioengineering 77:57-61.

89. Kim, S.W., Song, N.H., Jung, K.H., Kwak, S.S. and Liu, J.R. 1994 High frequency plant regeneration from anther-derived cell suspension cultures via somatic embryogenesis in Catharanthus roseus. Plant Cell Reports 13:319-322.

90. Kim, S.W., Jung, K.H., Kwak, S.S. and Liu, J.R. 1994 Relationship between morphology and indole alkaloid production in suspension cultures of vinca (Catharanthus roseus). Plant Cell Reports. 14:23-26.

    1992

91. Lee, H., Hong, W.H., Yoon, J.H., Song, K.M., Kwak, S.S. and Liu, J.R. 1992 Extraction of indole alkaloids from Catharanthus roseus by using supercritical carbon dioxide. Biotechnology Techniques 6:127-130

92. Jung, K.H., Kwak, S.S., Kim, S.W., Choi, C.Y., Heo, G.S. and Liu, J.R. 1992 Selection of protoclones for high yields of indole alkaloids from suspension cultures of Catharanthus roseus and the qualitative analysis of the compounds by LC-MS. Biotechnology Techniques 6:305-308

93. Song, K.M., Park, S.W., Hong, W.H., Lee, H., Kwak, S.S. and Liu, J.R. 1992 Isolation of vindoline from Catharanthus roseus by supercritical fluid extraction. Biotechnology Process 8:583-586

94. Jung, K.H., Kwak, S.S., Kim, S.W., Lee, H., Choi, C.Y. and Liu, J.R. 1992 Improvement of the catharanthine productivity in hairy root cultures of Catharanthus roseus by using monosaccharides as a carbon source. Biotechnology Letters 14:695-700.

    1991

95. Sato. F., Yamada. Y., Kwak. S.S., Ichinose. K., Kishida. M., Takahahsi. N. and Yoshida. S. 1991 Photoautotrophic cultured plant cells: A novel system to survey new photosynthetic electron transport inhibitors. Z. Naturforsch. 46c:563-568.

96. Saito, T., Kwak, S.S., Kamiya, Y., Yamane, H., Sakurai, A., Murofushi, N. and Takahahsi, N. 1991 Effects of deoxygibberellin C (DGC) and 16-deoxy-DGC on GA 3b-hydroxylase and plant growth. Plant and Cell Physiology 32:239-245

97. Kobayashi, M., Kwak, S.S., Kamiya, Y., Yamane, H., Takahashi, N., Sakurai, A. 1991 Conversion of GA5 to GA6 and GA3 in cell-free system from Phaseolus vulgaris and Oryza sativa. Agric. Biol. Chemi. 55:249-251.

    1988

98. Kwak, S.S., Kamiya, Y., Sakurai, A. and Takahahsi, N. 1988 Isolation of gibberellin biosynthesis inhibitors from testas of Phaseolus vulgaris L. Agricultural Biology and Chemistry 52: 149-151

99. Kwak, S.S., Kamiya, Y., Takahashi, M., Sakurai, A. and Takahahsi, N. 1988 Metabolism of [14C]GA20 in a cell-free system from developing seeds of Phaseolus vulgaris L. Plant and Cell Physiology 29:707-711

100. Kwak, S.S., Kamiya, Y., Sakurai, A., Takahahsi, N. and Graebe, J.E. 1988 Partial purification and characterization of gibberellin 3b-hydroxylase from immature seeds of Phaseolus vulgaris L. Plant and Cell Physiology 29:935-943.