2013 Fiscal Year Final Research Report
Study of molecular mechanisms underlying phototropic responses independent of auxin lateral distribution
| Project/Area Number |
24657027
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Plant molecular biology/Plant physiology
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| Research Institution | Niigata University |
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Principal Investigator |
HAGA Ken 新潟大学, 自然科学研究科, 研究員 (50382031)
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| Co-Investigator(Renkei-kenkyūsha) |
SAKAI Tatsuya 新潟大学, 自然科学系, 准教授 (10360554)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Keywords | 光屈性 / コロドニー・ウエント説 / オーキシン / PIN / シロイヌナズナ / 根 |
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| Research Abstract |
Plants are growing to or away from light direction to adapt to their light environments. The responses, so-called phototropism, have been well-studied for a long time. Auxin, one of plant hormones, is known to stimulate plant growth and thought to be involved in phototropism by changing its endogenous distribution in responses to light irradiation. The present study analyzed phototropic responses of Arabidopsis seedling roots, and demonstrated existence of molecular mechanisms underlying phototropic responses independent of auxin asymmetrical lateral distribution. Our investigations strongly suggested that light stimulation directly controls regulatory components involved in auxin-mediated responses, such as auxin receptors and/or auxin responsive transcription factors. The present results contribute to establishment of a new model responsible for phototropic responses.
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[Journal Article] The phototropic response is locally regulated within the topmost light-responsive region of the Arabidopsis thaliana seedling2014
Author(s)
Yamamoto, K., Suzuki, T., Aihara, Y., Haga, K., Sakai, T., and Nagatani, A.
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Journal Title
Plant and Cell Physiology
Volume: 55(3)
Pages: 497-506
DOI
Peer Reviewed
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[Journal Article] Identification of rice Allene Oxide Cyclase mutants and the function of jasmonate for defence against Magnaporthe oryzae2013
Author(s)
Riemann, M., Haga, K., Shimizu, T., Okada, K., Ando, S., Mochizuki, S., Nishizawa, Y., Yamanouchi, U., Nick, P., Yano, M., Minami, E., Takano, M., Yamane, H., and Iino, M.
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Journal Title
The Plant Journal
Volume: 74
Pages: 226-238
DOI
Peer Reviewed
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[Journal Article] The WAVY GROWTH 3 E3 ligase family controls the gravitropic response in Arabidopsis roots2012
Author(s)
Sakai, T., Mochizuki, S., Haga, K., Uehara, Y., Suzuki, A., Harada, A., Wada, T., Ishiguro, S., and Okada, K.
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Journal Title
The Plant Journal
Volume: 70
Pages: 303-314
DOI
Peer Reviewed
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