2012 Fiscal Year Final Research Report
Regulation system of a plant hormone, auxin
| Project Area | Plant regulatory systems that control developmental interactions between meristems and lateral organs |
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| Project/Area Number |
19060008
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| Research Category |
Grant-in-Aid for Scientific Research on Priority Areas
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| Allocation Type | Single-year Grants |
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| Review Section |
Biological Sciences
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| Research Institution | Hokkaido University |
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Principal Investigator |
YAMAMOTO Kotaro 北海道大学, 大学院・理学研究院, 教授 (80142008)
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| Co-Investigator(Kenkyū-buntansha) |
WATAHIKI Masaaki 北海道大学, 大学院・理学研究院, 准教授 (70396282)
TANAKA Ayumi 北海道大学, 低温科学研究所, 教授 (10197402)
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| Project Period (FY) |
2007 – 2012
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| Keywords | オーキシン / 遺伝子発現 / イメージング / シグナル伝達 / 植物 |
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| Research Abstract |
We studied molecular mechanisms of auxin-induced elongation and bending of stem organs in Arabidopsis with respect to an Aux/IAA gene, MSG2, and found that MSG2 repressed elongation and bending after expression, forming feed-back loop of transcriptional regulation. We also identified a novel gene, LAZY1, that regulated bending response. LAZY1 acted through a pathway that did not regulate activities of PIN3, 4 or 7, which had been thought to be major auxin transporters involved in bending response.
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[Journal Article] Reduced phototropism in pks mutants may be due to altered auxin-regulated gene expression or reduced lateral auxin transport2013
Author(s)
Kami, C., Allenbach, L., Zourelidou, M., Ljung, K., Schutz, F., Isono, E., Watahiki, M. K., Yamamoto, K. T., Schwechheimer, C., Fankhauser, C
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Journal Title
Plant J
Volume: 77
Pages: 393-403
Peer Reviewed
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[Journal Article] AtIQM1, a novel calmodulin-binding protein, is involved in stomatal movement in Arabidopsis2012
Author(s)
Zhou, Y.P., Duan, J., Fujibe, T., Yamamoto, K.T., Tian, C.-E
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Journal Title
Plant Mol. Biol
Volume: 79
Pages: 333-346
Peer Reviewed
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[Journal Article] Arabidopsis AUXIN RESPONSE FACTOR6 and 8 regulate jasmonic acid biosynthesis and floral organ development via repression of class 1 KNOX genes2010
Author(s)
Tabata, R., Ikezaki, M., Fujibe, T., Aida, M., Tian, C.-e., Ueno, Y., Yamamoto, K. T., Machida, Y., Nakamura, K., Ishiguro, S
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Journal Title
Plant Cell Physiol
Volume: 51
Pages: 164-175
Peer Reviewed
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[Journal Article] Phytochromemediated growth inhibition of seminal roots in rice seedlings2009
Author(s)
Shimizu, H., Tanabata, T., Xie, X., Inagaki, N., Takano, M., Shinomura, T., Yamamoto, K. T
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Journal Title
Physiol. Plant
Volume: 137
Pages: 289-297
Peer Reviewed
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