2012 Fiscal Year Final Research Report
Studies on regulatory mechanisms of cell-wall related genes involved in stem growth in plants.
| Project/Area Number |
22370013
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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 | Tohoku University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
YOKOYAMA Ryusuke 東北大学, 大学院・生命科学研究科, 講師 (90302083)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 植物 / 茎成長 / 支持組織 / 細胞壁 / 転写制御 / PME35 |
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| Research Abstract |
Stem growth in plants is ultimately regulated through optimization of the capabilities of both “extension" and “support" of individual cells within the stem via construction and restructuring of the cell wall thereof. The mechanisms governing this optimization process of the two capabilities for the stem growth still remain elusive. In this study we focused on two cell-wall related gene families, XTH encoding xyloglucan endo transglucosylase/hydrolase and PME encoding pectin-methylesterase. We found that rice OsXTH19 gene is capable of hydrolyzing xyloglucan in rice and is a candidate for cell-wall loosening agent in rice cell wall. We demonstrated that Arabidopsis PME35 gene is required for demethylesterification of pectin in the primary cell walls of the stem, and is involved in the regulation of mechanical support of the inflorescent stem of Arabidopsis. With respect to factors governing the regulation of transcription of these cell-wall related genes are now under investigation.
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[Journal Article] A Dof Transcription Factor, SCAP1, is essential for the development of functional stomata in Arabidopsis2013
Author(s)
Juntaro Negi, Kosuke Moriwaki, Mineko Konishi, Ryusuke Yokoyama, Toshiaki Nakano, Kensuke Kusumi, Mimi Hashimoto-Sugimoto, Julian I.Schroeder, Kazuhiko Nishitani, Shuichi Yanagisawa, Koh Iba
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Journal Title
Current Biology
Volume: 23
Pages: 479-484
DOI
Peer Reviewed
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