Plant Genetics and Physiology
Research Groups
Plant Light Acclimation Reserch GroupStaff
Research Topics
Photosynthesis and chloroplast biogenesis: Understanding to innovation
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Our life on earth cannot continue without the atmospheric environment, which is maintained by oxygenic photosynthesis. Plants perform photosynthesis in chloroplasts, where light energy is converted into chemical energy by a series of electrochemical reactions. In contrast, sessile land plants are exposed incessantly to excess light energy or harsh atmospheric environments that engender ‘photodamage’. How do plants cope with such photosynthetic inactivation? What are the key elements to maintaining or even maximizing chloroplast functions? Our group studies various aspects of chloroplast development and photosynthesis. Through understanding of the factors involved in photoprotection and chloroplast function, we aim at improving crop productivity against atmospheric stress over the long term.  |
Publication List
- (1) Takanashi, H., Shichijo, M., Sakamoto, L., Kajiya-Kanegae, H., Iwata, H., Sakamoto, W. and Tsutsumi, N. Genetic dissection of QTLs associated with spikelet-related traits and grain size in sorghum. Sci. Rep. 11(1): 9398. (2021. 4.)
- (2) Ida, T., Crofts, N., Miura, S., Matsushima, R. and Fujita, N. Structure and Properties of Starch in Rice Double Mutants Lacking Starch Synthase (SS) IIa and Starch Branching Enzyme (BE) Iib. J. Appl. Glycosci. 68: 31-39. (2021. 4.)
- (3) Gupta, T. K., Klumpe, S., Gries, K., Heinz, S., Wietrzynski, W., Ohnishi, N., Niemeyer, J., Spaniol, B., Schaffer, M., Rast, A., Ostermeier, M., Strauss, M., Plitzko, J. M., Baumeister, W., Rudack, T., Sakamoto, W., Nickelsen, J., Schuller, J. M., Schroda, M. and Engel, B. D. Structural basis for VIPP1 oligomerization and maintenance of thylakoid membrane integrity. Cell 184(14): 3643-3659. (2021. 7.)
- (4) Taketa, S., Hattori, M., Takami, T., Himi, E. and Sakamoto, W. Mutations in a Golden2-Like Gene Cause Reduced Seed Weight in Barley albino lemma 1 Mutants. Plant Cell Physiol. 62(3): 447-457. (2021. 7.)
- (5) Jing, Z., Wacera, F. W., Takami, T., Takanashi, H., Fukada, F., Kawano, Y., Kajiya-Kanegae, H., Iwata, H., Tsutsumi, N. and Sakamoto, W. NB-LRR-encoding genes conferring susceptibility to organophosphate pesticides in sorghum. Sci. Rep. 11(1): 19828. (2021. 10.)
- (6) Okegawa, Y., Tsuda, N., Sakamoto, W. and Motohashi, K. Maintaining the Chloroplast Redox Balance Through the PGR5-Dependent Pathway and the Trx System is Required for Light-Dependent Activation of Photosynthetic Reactions. Plant Cell Physiol. 63(1): 93-102. (2022.1.)
- (7) Nagamatsu S, Wada T, Matsushima R, Fujita N, Miura S, Crofts N, Hosaka Y, Yamaguchi O, Kumamaru T. Mutation in BEIIb mitigates the negative effect of the mutation in ISA1 on grain filling and amyloplast formation in rice . Plant Mol Biol., 108: 497-512 (2022.1)
- (8) Yamatani, H., Ito, T., Nishimura, K., Yamada, T., Sakamoto, W., and Kusaba, M. Genetic analysis of chlorophyll synthesis and degradation regulated by BALANCE of CHLOROPHYLL METABOLISM. Plant Physiol., 189: 431-444 (2022.3)
- (9) Okegawa, Y., Sakamoto, W. and Motohashi, K. Functional division of f-type and m-type thioredoxins to regulate the Calvin cycle and cyclic electron transport around photosystem I. J Plant Res. doi: 10.1007/s10265-022-01388-7. (2022.3. Online Preview)
- (10)Wahinya, F. W., Yamazaki, K., Jing, Z., Takami, T., Kamiya, T., Kajiya-Kanegae, H., Takanashi, H., Iwata, H., Tsutsumi, N., Fujiwara, T., and Sakamoto, W. (2022) Sorghum ionomics reveals the finctional SbHMA3a allele that limits excess cadmium accumulation in grains. Plant Cell Physiol. https://doi.org/10.1093/pcp/pcac035 (2022.3. Online Preview)
- (11)Ida, T., Crofts, N., Miura, S., Matsushima, R. and Fujita1,N. Starch biosynthetic protein complex formation in rice ss2a be2b (+) double mutant differs from their parental single mutants. J. Appl. Glycosci. https://doi.org/10.5458/jag.jag.JAG-2021_0015 (2022.3. Online Preview)