2011 Fiscal Year Final Research Report
Study on metabolic system and function of cis-zeatin in monocots
| Project/Area Number |
21370023
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Plant molecular biology/Plant physiology
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| Research Institution | The Institute of Physical and Chemical Research |
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Principal Investigator |
SAKAKIBARA Hitoshi 独立行政法人理化学研究所, 生産機能研究グループ, グループディレクター (20242852)
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| Research Collaborator |
KUDO Toru 独立行政法人理化学研究所, 生産機能研究グループ, 特別研究員
KOJIMA Mikiko 独立行政法人理化学研究所, 生産機能研究グループ, 技師
MAKITA Nobue 独立行政法人理化学研究所, 生産機能研究グループ, テクニカルスタッフ
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| Project Period (FY) |
2009 – 2011
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| Keywords | イネ / サイトカイニン / 配糖化 / 受容体 / 生長制御 |
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| Research Abstract |
We have demonstrated that cZ inhibits seminal root elongation and to up-regulates cytokinin-inducible genes, and its activities were comparable to those of tZ. We identified three rice cZ-O-glucosyltransferases and found that their overexpressors exhibited short shoot phenotypes, delay of leaf senescence, and decrease in crown root number. These results strongly suggest that cZ activity has a physiological impact on growth and development in rice. We demonstrated that a part of cytokinin receptors are localized in endoplasmic reticulum membrane.
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[Journal Article] Arabidopsis lonely guy(LOG) multiple mutants reveal a central role of the LOG-dependent pathway in cytokinin activation2012
Author(s)
Tokunaga, H., Kojima, M., Kuroha, T., Ishida, T., Sugimoto, K., Kiba, T. and Sakakibara, H.
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Journal Title
Plant J
Volume: 69
Pages: 355-365
Peer Reviewed
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[Journal Article] Functional analyses of LONELY GUY cytokinin-activating enzymes reveal the importance of the direct activation pathway in Arabidopsis2009
Author(s)
Kuroha, T., Tokunaga, H., Kojima, M., Ueda, N., Ishida, T., Nagawa, S., Fukuda, H., Sugimoto, K. and Sakakibara, H.
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Journal Title
Plant Cell
Volume: 21
Pages: 3152-3169
Peer Reviewed
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[Journal Article] Highly-sensitive and high-throughput analysis of plant hormones using MS-probe modification and liquid chromatography-tandem mass spectrometry : an application for hormone profiling in Oryza sativa2009
Author(s)
Kojima, M., Kamada-Nobusada, T., Komatsu, H., Takei, K., Kuroha, T., Mizutani, M., Ashikari, M., Ueguchi-Tanaka, M., Matsuoka, M., Suzuki, K. and Sakakibara, H.
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Journal Title
Plant Cell Physiol
Volume: 60
Pages: 1201-1214
Peer Reviewed
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