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Home > Introduction of our tenure-track faculties > Okazaki Shin

Introduction of our tenure-track faculties

Okazaki Shin

Affiliation Institute of Agriculture
Division Division of International Environmental and Agricultural Science
Research field Soil and Environmental Microbiology
Keyword(S) Microbiology, Plant nutrition, Biofertilizer
Url http://www.tuat.ac.jp/~ieas/english/index.html
Research experience

・2004.Apr – 2005.Mar : Postdoctoral fellow (Osaka University)
・2005.Apr. – 2005.Sep Postdoctoral fellow (Nara Women's University)
・2005.Sep. – 2007.Sep.:Postdoctoral fellow (Dresden University of Technology, Germany)
・2007.Oct – 2008.Mar Postdoctoral fellow (Nara Women's University)
・2008.Apr – 2012.Jan : Assistant Professor (Nara Women's University)
・2012.Feb - present : Assistant Professor (Tokyo University of Agriculture and Technology)

Educational background

・Tohoku University, Dep. of Agriculture, BSc. 1998年
・Tohoku University, Gratuate school of Agriculture, MSc. 2000年
・Tohoku University, Gratuate school of Agriculture, Ph.D. 2004年

Awards
Selected papers and publications

・Okazaki S, Okabe S, Higashi M, Shimoda Y, Sato S, Tabata S, Hashiguchi M, Akashi R, Göttfert M, K. Saeki.
Identification and functional analysis of Type III effector proteins in Mesorhizobium loti.
Molecular Plant-Microbe Interactions. (2010) 23:223-342.
・Okazaki S, Zehner S, Hempel J, Lang K, Göttfert M.
Genetic organization and functional analysis of the type III secretion system of Bradyrhizobium elkanii.
FEMS Microbiology Letters. (2009), 95:88-95.
・Okazaki S, Hattori Y., Saeki K.
The Mesorhizobium loti purB gene is involved in infection thread formation and nodule development in Lotus japonicus.
Journal of Bacteriology. (2007), 189:8347–8352.
・Okazaki S, Sugawara M, Yuhashi K, Minamisawa K.
Rhizobitoxine-induced Chlorosis Occurs in Coincidence with Methionine Deficiency in Soybeans.
Annals of Botany. (2007), 100:55-59. (Content select of the month)
・Sugawara, M., Okazaki S., N. Nukui, H. Ezura, H. Mitsui, and K. Minamisawa.
Rhizobitoxine modulates plant-microbe interactions by ethylene inhibition.
Biotechnology Advances. (2006), 24:382-388.
・Okazaki, S., M. Sugawara, and K. Minamisawa.
Bradyrhizobium elkanii rtxC gene is required for expression of symbiotic phenotypes in the final step of rhizobitoxine biosynthesis.
Applied and Environmental Microbiology. (2004), 70:535-541.
・Okazaki S., N. Nukui, M. Sugawara, and K. Minamisawa.
Rhizobial strategies to enhance symbiotic interactions: Rhizobitoxine and 1-aminocyclopropane- 1-carboxylate deaminase.
Microbes and Environment. (2004), 19:99-111.
・Okazaki, S., K.Yuhashi, and K. Minamisawa.
Quantitative and time-course evaluation of nodulation competitiveness of rhizobitoxine-producing Bradyrhizobium elkanii.
FEMS Microbiology Ecology. (2003), 45:155-160.

Research Description

Plants are continually exposed to a huge variety of microbes. These microbes include potential pathogens that induce diseases on plants, and symbionts that benefit plants by supplying various nutrients or conferring beneficial traits such as disease resistance and drought tolerance. To achieve sustainable agriculture it is important to use these beneficial microbes instead of applying large amount of chemical fertilizers and agricultural chemicals.
The work in our laboratory focuses on beneficial soil microbes such as rhizobium, AM fungi and endophytic bacteria. In addition to the conventional analyses, genome analysis and metagenomic analysis using next generation sequencers enables detection of beneficial genetic resources that have not been identified ever. We further analyze molecular interactions between crop plants and those microbes using molecular and biochemical techniques and plant genetics. Based on the theoretical evidence derived from these analyses, we work toward practical use of those beneficial microbes such as bio-fertilizers, microbial inoculants or the development of technologies for soil diagnostics to promote sustainable agriculture.

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About TUAT's tenure-track program

Tenure track program in TUAT provides a position as an independent investigator in a secured own research space with an abundant start-up fund. In addition, experienced senior researchers could give us advise on research strategy and laboratory management. I think this is ideal environment for young scientists who are starting scientific career.

Future aspirations

In soil there are microbes that benefit plants by supplying various nutrients or conferring beneficial traits such as disease resistance. To achieve sustainable agriculture it is important to use these beneficial microbes instead of applying large amount of chemical fertilizers and agricultural chemicals. Newly developed technologies including next generation sequencers lay a path to the new phase of soil microbiology. Using these new technologies, I would like to work toward practical use of those beneficial microbes such as bio-fertilizers, microbial inoculants or the development of technologies for soil diagnostics to promote sustainable agriculture.