Choong-Min Ryu

Experience

• 1998 - current, Plant growth promotion and induced resistance by LS213, chitin plus a mixture of two Plant growth promoting rhizobacteria (PGPR) strains. Mechanisms of plant growth promotion by PGPR.

• 1998 - 1998, Study of autoincution of rhizosphere bacteria (rhizobacteria). Transformation of green fluorescence protein (gfp) into rhizobacteira.

• 1997 - 1998, Application of root-colonizing Bacillus spp. on tomato, hot pepper, potato, watermelon, corn, rye, barley and wheat in field condition.

• 1996 - 1997, Isolation of root-colonizing Bacillus spp. in barley and wheat at southern part of Korea.

• 1994 - 1996, Isolation and characterization of pulp sludge-decomposing bacteria. Biological control of soil-borne by pulp sludge and its decomposing bacteria.

Education

• 1995-1989. Bachelor Degree in Agricultural Biology. GyeongSang National University. Korea (ROK).
• 1998- 1996. M. S. in Agricultural Biology, GyeongSang National University. Korea (ROK)
• Currently a Ph.D. Candidate in Plant Pathology, Auburn University, AL., 1998 - Present

Major Research Accomplishments

• Has worked on Plant Growth-Promoting Rhizobacteria and their related subjects for 4 years. During MS course in Korea, concentrated on the endospore forming rhizobacteria, Bacillus spp. Worked on field applications of the rhizobacteria, root colonization by bacteria, and incorporation of lux gene and green fluorescent protein (gfp) gene as a marker for biocontrol agents.

• Since last September, as a graduate research assistance with Dr. J. W. Kloepper, has researched beneficial bacteria and their interactions with plants.

Professional Memberships

• American Phytopathology Society.
• International Society for Molecular Plant-Microbe Interaction.
• Korean Society of Plant Pathology.
• Korean Society of Molecular Biology.

Specialization

• Biological control of plant pathogens.
  - Plant Growth-Promoting Rhizobacteria (PGPR).
  - Plant Growth Promotion in field condition by PGPR.
  - Microbial ecology.
  - Mechanisms of biocontrol and plant growth promotion.
  - Setting-up field trials.
  
• Host-pathogen interaction.
  - Physiological and biochemical changes in plant.
  - PGPR-mediated Induced systemic resistance.
  - Quorum sensing of rhizobacteria.

Refereed Publications

• Kim, J. W., Choi, O. H., Kang, J. H., Ryu, C. M., Jeong, M. J., Kim, J. W., and Park, C. S. 1988. Trancing of some root rolonizing Pseudomonas in the rhizosphere using lux gene introduction bacteria. Korean J. Plant Pathol. 14: 13-18.

• Kim, S.H., C.S. Park, J.B. Park, C.M. Ryu, J.W. Kim and C.W. Kang. 1998. Accelerated plant growth and biological control of soil-borne diseases using useful microorganisms in integrated mechanization system of Sesame (Sesamum indicum L.) production in Korea. 25^th International Seed Testing Congress Seed Symposium Abstracts 116p. Pretoria, Republic of South Africa.

• Ryu, C-M. and Park, C-S. 1997. Enhancement of plant growth induced by endospore forming PGPR strain, Bacillus polymyxa E681. Page 186-190 in : Plant Growth-Promoting Rhizobacteria- Present Status and Future Prospects. Proc. Int. Workshop on Plant Growth-Promoting Rhizobacteria, 4^th. A. Ogoshi, K. Kobayshi, Y. Homma, F. Komada, N. Knodo, S. Akino, eds. Nakanishi Printing, Sapporo, Japan.

• Chun, D. S., Choi, O. H., Ryu, C. M., and Park, C. S. 1997. Enhancement of plant growth in plug system and increasing seed germination by Bacillus polymyxa. 1997. 92. in Recent Research Trend of Plant Pathology. Proc. Special lectures on Korean Society of Plant Pathology. Seoul, Korea.

• Ryu, C. M., Kim, J. W., Choi, O. H., and Park, C. S. 1999. Selection and characteristics of endospore forming rhizobacteria from winter barley and wheat. (In preparation).

• Ryu, C. M., Kim, J. W., Choi, O. H., and Park, C. S. 1999. Biocontrol of soil-borne disease and enhancement of plant growth on sesame by pelletizing with Paenibacillus polymyxa E681 and Pseudomonas flourescent M45. (In preparation).

• Ryu, C. M., Kim, J. W., Choi, O. H., and Park, C. S. 1999. Enhancement of plant growth on winter barley with Paenibacillus polymyxa. (In preparation).

Abstracts

• Kloepper, J. W, Reddy, M. S., Ryu, C. M., and Murphy, J. F. 1999. Use of beneficial rhizobacteria to enhance growth and induce systemic disease protection in transplants. Hotiscience 34(3):560.

• Ryu, C. M., Reddy, M. S., Zhang, S., Murphy, J. F., and Kloepper, J. W. 1999. Plant growth promotion of tomato by a biological preparation (LS213) and evaluation for protection against cucumber mosaic virus. Phytopathology 89:S67.

• Reddy, M. S., Rodriguez-Kabana, R., Kenney, D. S., Ryu, C. M., Zhang, S., Yan, Z., Martinez-Ochoa, N., and Kloepper, J. W. 1999. Growth promotion and induced systemic resistance (ISR) mediated by a biological preparation. Phytopathology 89:S65.

• Zhang, S., Reddy, M. S., Ryu, C. M., and Kloepper, J. W.1999. Relationship between in vitro and in vivo testing of PGPR for induced systemic resistance against tobacco blue mold. Phytopathology 89:S89.

• Ryu, C. M., Lee, S. H., Chun, D. S., Lee, G. S., and Park, C. S. 1997. Effect of barley growth promotion by Bacillus polymyxa. Korean J. Plant Pathol. 13:

For additional information cryu@acesag.auburn.edu

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