OHTSU Naoko

Professional Career

2000/04/01-2003/03/31 : JSPS Research Fellow (DC1)
2003/05-2004/03/31 : Doctoral Research Fellow, Institute of Agriculture, Doctoral Research Fellow, Institute of Agriculture, Hokkaido University
2004/04-2007/12 : Doctoral Research Fellow, Iowa Stete Universtiy, U.S.A.
2008/04/01-2009/09/30 : Research Fellow, RIKEN Center for Sustainable Resource Science
2009/10/01-2012/03/31 : Assistant Professor, Women's Future Organization, Tokyo University of Agriculture and Technology
2012/04/01-2012/12/31- Assistant Professor, Institute of Agriculture, Tokyo University of Agriculture and Technology
2013/01/01-2016/02/29 : Lecturer, Institute of Agriculture, Tokyo University of Agriculture and Technology
2016/03/01-2018/09/30 : Associate Professor, Institute of Agriculture, Tokyo University of Agriculture and Technology
2018/10-present : Professor, Institute of Global Innovation Research,Tokyo University of Agriculture and Technology

Academic Degrees

2003/03 Ph.D., Agricultural Science, The University of Tokyo

Research Interests

Sulfur Nutrition, Glutathione Metabolism

Publications

• Arunee Wongkaew, Shin-ichi Nakamura, Hiroki Rai, Tadashi Yokoyama, Sutkhet Nakasathien, Naoko Ohkama-Ohtsu, Phloem-specific overexpression of AtOPT6 alters glutathione, phytochelatin, and cadmium distribution in Arabidopsis thaliana,　PLANT SCIENCE,　2024. 348, 112238, https://doi.org/10.1016/j.plantsci.2024.112238.
• Aoudi, Yosra, Shin-ichiro Agake, Safiullah Habibi, Gary Stacey, Michiko Yasuda, and Naoko Ohkama-Ohtsu. “Effect of Bacterial Extracellular Polymeric Substances from Enterobacter spp. on Rice Growth under Abiotic Stress and Transcriptomic Analysis” MICROORGANISMS 2024, 12(6), 1212. https://doi.org/10.3390/microorganisms1206121
• Md. Monirul Islam, Shin-ichiro Agake, Takehiro Ito, Michiko Yasuda, Safiullah Habibi, Tetsuya Yamada, Gary Stacey and Naoko Ohkama-Ohtsu.　Involvement of Peptidoglycan Receptor Proteins in Mediating the Growth-Promoting Effects of Bacillus pumilus TUAT1 in Arabidopsis thaliana. Plant and Cell Physiology, doi:10.1093/pcp/pcae016, 2024
• Safiullah Habibi, Tadashi Yokoyama, Mohammad Daud Haidari, Akihiro Torii, Michiko Yasuda, Naoko Ohkama-Ohtsu. Analyzing Single and Combined Cultures of Plant Growth-Promoting Rhizobacteria Isolates from Afghanistan as a Potential Biofertilizer for Rice Growth and Development. Agriculture-Basel 2023, 13(12), 2252, doi：10.3390/agriculture13122252
• Xiao L, Yamada T, Maeda M, Agake S, Ngo NP, Kanekatsu M, Shinozaki Y, Ohkama-Ohtsu N, Yokoyama T. Possible involvement of nitric oxide in promoting the initial growth of rice seedlings at low temperature by inoculation of Bacillus pumilus strain TUAT1 spores. Soil Science and Plant Nutrition, i2023 July 31, doi: 10.1080/00380768.2023.2240834
• Damo JLC, Shimizu T, Sugiura H, Yamamoto S, Agake SI, Anarna J, Tanaka H, Sugihara S, Okazaki S, Yokoyama T, Yasuda M, Ohkama-Ohtsu N. The Application of Sulfur Influences Microbiome of Soybean Rhizosphere and Nutrient-Mobilizing Bacteria in Andosol. Microorganisms. 2023 May 3;11(5):1193. doi: 10.3390/microorganisms11051193.
• Md Firoz Mortuza, Salem Djedidi, Takehiro Ito, Shin-ichiro Agake, Hitoshi Sekimoto, Tadashi Yokoyama, Shin Okazaki and Naoko Ohkama-Ohtu, 2022. Genetic and Physiological Characterization of Soybean-Nodule-Derived Isolates from Bangladeshi Soils Revealed Diverse Array of Bacteria with Potential Bradyrhizobia for Biofertilizers. Microorganisms, 10(11), 2282, DOI:10.3390/microorganisms10112282
• Hinako Sugiura, Shunsuke Miyaji, Saki Yamamoto, Michiko Yasuda, Jean Louise Cocson Damo, Maria Daniela Artigas Ramirez, Shin-Ichiro Agake, Takehiro Kamiya, Toru Fujiwara, Sonoko Dorothea Bellingrath-Kimura, Haruo Tanaka, Soh Sugihara & Naoko Ohkama-Ohtsu, 2022. “Induction of citrate transporter gene expression in soybean roots by sulfur application“, Soil Science and Plant Nutrition, DOI: 10.1080/00380768.2022.2104594
• Sylwia Lewandowska, Krzysztof Marczewski, Marcin Kozak, Naoko, Ohkama-Ohtsu, Magdalena Łabowska, Jerzy Detyna, Izabela Michalak. 2022. Impact of freshwater macroalga (Cladophora glomerata) extract on yield and morphological responses of Glycine max (L.) Merr., Agriculture 12(5) 685, DOI : 10.3390/agriculture12050685
• Agake S., Plucani do Amaral F., Yamada T., Sekimoto H., Stacey G., Yokoyama T., Ohkama-Ohtsu N., Plant Growth Promoting Effect of Viable and Dead Spores of Bacillus pumilus TUAT1 on Setaria viridis. Microbes and Environments, 2022;37(1). doi: 10.1264/jsme2.ME21060. 37(1), doi: 10.1264/jsme2.ME21060
• Saki Yamamoto, Shin Okazaki, Nakei D Monica, Naoko Ohkama-Ohtsu, Haruo Tanaka, Soh Sugihara: Rhizobium Inoculation Improved the Rhizosphere P Dynamics and P Uptake Capacity of Pigeon Pea Plants Grown in Strongly Weathered Soil Only under P Fertilized Conditions, Agronomy 12(12), 3149 (2022): https://doi.org/10.3390/agronomy12123149
• Damo JLC, Ramirez MDA, Agake S, Pedro M, Brown M, Sekimoto H, Yokoyama T, Sugihara S, Okazaki S, Ohkama-Ohtsu N. 2022. Isolation and Characterization of Phosphate Solubilizing Bacteria from Paddy Field Soils in Japan. Microbes Environ 37 (2)　ME21085
• Agake S, Ohwaki Y, Kojima K, Yoshikawa E, Artigas Ramirez MD, Bellingrath-Kimura SD, Yamada T, Ookawa T, Yokoyama T, Ohkama-Ohtsu N. Biofertilizer with Bacillus pumilus TUAT1 spores improves growth, productivity, and lodging resistance in forage rice. Agronomy. 12, 10, 2325
• Ito T, Kitaiwa T, Nishizono K, Umahashi M, Miyaji S, Agake S, Kuwahara K, Yokoyama T, Fushinobu S, Maruyama-Nakashita A, Sugiyama R, Sato M, Inaba J, Hirai MY, Ohkama-Ohtsu N. 2022. Glutathione degradation activity of gamma-glutamyl peptidase 1 manifests its dual roles in primary and secondary sulfur metabolism in Arabidopsis. Plant J 111: 1626-42
• Richard Ansong Omari, Kun Yuan, Khoa Trinh Anh, Moritz Reckling, Mosab Halwani, Dilfuza Egamberdieva, Naoko Ohkama-Ohtsu, Sonoko D Bellingrath-Kimura (2021) Enhanced soybean productivity by inoculation with indigenous Bradyrhizobium strains in agroecological conditions of Northeast Germany, Frontiers in Plant Science, 12, 707080, doi 0.3389/fpls.2021.707080, 2022
• Shimpei Uraguchi; Yuka Ohshiro; Yuto Otsuka; Emiko Wada; Fumii Naruse; Kakeru Sugaya; Kenichiro Nagai; Arunee Wongkaew; Ryosuke Nakamura; Yasukazu Takanezawa; Stephan Clemens; Naoko Ohkama-Ohtsu; Masako Kiyono. Phytochelatin-mediated metal detoxification pathway is crucial for an organomercurial phenylmercury tolerance in Arabidopsis. Plant Molecular Biology,2021, doi: 10.1007/s11103-021-01221-0.
• Rallos, R. V., G. P. Dicen, S. Habibi, D. Salem, N. Ohkama-Ohtsu, and T. Yokoyama. 2021. “Influence of potassium-solubilizing bacteria on the growth and radiocesium phyto-transfer of Brassica rapa L. var. perviridis grown in contaminated Fukushima soils.” Journal of Environmental Radioactivity, 237:106682. doi: 10.1016/j.jenvrad.2021.106682.
• Hasibuan, R. F. M., M. Miyatake, H. Sugiura, S. Agake, T. Yokoyama, S. D. Bellingrath-Kimura, K. Katsura, and N. Ohkama-Ohtsu. 2021. “Application of biofertilizer containing Bacillus pumillus TUAT1 on soybean without inhibiting infection by Bradyrhizobium diazoefficiens USDA110.” Soil Science and Plant Nutrition. doi: 10.1080/00380768.2021.1959837.
• Sugiyama, R., R. Li, A. Kuwahara, R. Nakabayashi, N. Sotta, T. Mori, T. Ito, N. Ohkama-Ohtsu, T. Fujiwara, K. Saito, R. T. Nakano, P. Bednarek, and M. Y. Hirai. (2021) Retrograde sulfur flow from glucosinolates to cysteine in Arabidopsis thaliana. Proc Natl Acad Sci U S A 118 (22).doi: 10.1073/pnas.2017890118.
• Ramirez, M. D. A., M. Espana, H. Sekimoto, S. Okazaki, T. Yokoyama, and N. Ohkama-Ohtsu. (2021) Genetic diversity and characterization of symbiotic bacteria isolated from endemic phaseolus cultivars located in contrasting agroecosystems in Venezuela. Microbes Environ 36 (2). doi: 10.1264/jsme2.ME20157.
• Sugiura, H., S. Sugihara, T. Kamiya, M. D. A. Ramirez, M. Miyatake, T. Fujiwara, O. Takuji, T. Motobayashi, T. Yokoyama, S.D. Bellingrath-Kimura, and N. Ohkama-Ohtsu. 2021. “Sulfur application enhances secretion of organic acids by soybean roots and solubilization of phosphorus in rhizosphere.” Soil Science and Plant Nutrition. doi: 10.1080/00380768.2021.1919011.
• Kun Yuan, Moritz Reckling, Maria Daniela Artigas Ramirez，Salem Djedidi, Izumi Fukuhara, Takuj Ohyama,Tadashi Yokoyama, Sonoko Dorothea Bellingrath-Kimura, Mosab Halwani, Dilfuza Egamberdieva and Naoko Ohkama-Ohtsu. Characterization of rhizobia for the improvement of soybean cultivation at cold conditions in central Europe. Microbes and Environments (Microbes Environ.) 35(1),doi: 10.1264/jsme2.ME19124, 2020
• Artigas R.M.D., España, M., Lewandowska, S., Yuan, kun., Okazaki, Shin., Ohkama-Ohtsu, N., and Yokoyama, T. Phylogenetic Analysis of Symbiotic Bacteria Associated with Two Vigna Species under Different Agro-Ecological Conditions in Venezuela. Microbes and Environments (Microbes Environ.) 35(1). doi: 10.1264/jsme2.ME19120, 2020
• Md Firoz Mortuza, Norihiko Tomooka2, Safiullah Habibi, Tetsuya Akatsu, Salem Djedidi, Ken Naito, Hitoshi Sekimoto, Shin Okazaki, Naoko Ohkama-Ohtsu and Tadashi Yokoyama. Multiphase characterization of wild Vigna associated root nodule bacteria from Japanese subtropical islands unveiled novel high temperature resistant Bradyrhizobium strains having high symbiotic affinity with soybean and mungbean. Soil Science and Plant Nutrition (Soil Sci. Plant Nutr.) 10.1080/00380768.2020.1738192
• Habibi, S., Djedidi, S., Ohkama-Ohtsu, N., Sarhadi, W.A., Kojima, K., Rallos, R.V., Artigas R.M.D., Yamaya, H., Sekimoto, H., Yokoyama, T. Isolation and screening of indigenous plant growth-promoting rhizobacteria from different rice cultivars in Afghanistan soils. Microbes and Environments (Microbes Environ.)34: 347-355
• Miyatake, M., Ohyama, T., Yokoyama, T., Sugihara, S., Motobayashi, T., Kamiya, T., Fujiwara, T., Yuan, K., Bellingrath-Kimura S.D., Ohkama-Ohtsu, N. Effects of deep placement of controlled-release nitrogen fertilizer on soybean growth and yield under sulfur deficiency, Soil Science and Plant Nutrition (Soil. Sci. Plant Nutr.). 65: 259-266, 2019