Functional Evolutionary genomics: Inferring the origin and function of the genes involved in nodulation symbiosis with nitrogen fixation
| Project/Area Number |
20570220
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Evolutionary biology
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| Research Institution | The University of Tokyo |
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Principal Investigator |
AOKI Seishiro 東京大学, 総合文化研究科, 学術研究員 (10334301)
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| Co-Investigator(Kenkyū-buntansha) |
ITO Motomi 東京大学, 大学院総合文化研究科, 教授 (00193524)
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| Project Period (FY) |
2008-04-08 – 2013-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2012: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2010: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2009: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2008: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | 進化 / ゲノム / 共生 / 根粒菌 / マメ科植物 / 分子進化 / 協力行動 / 遺伝子重複 / 水平移行 / ゲノムアイランド / 蛋白質機能 / 生物間相互作用 / マメ / 感染実験 / ゲノム網羅的解析 / 協力 / 分子機能 / 計算 / 生理実験 |
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| Research Abstract |
There is a possibility that the symbiosis genes with an important role for the nodulation and nitrogen fixation passed through the special evolution that may be different from the other housekeeping genes. We compared the genomic information of various bacteria using the background information of symbiosis with legumes and inferred the new symbiotic nodulation genes and the evolution of this symbiosis. We examined large scale phylogenetic profiling and revealed the evolutionary origin of nodulation genes. Contrary to the widely accepted scenario of the alpha-proteobacterial origin of rhizobia, our exhaustive analysis showed that the nodulation symbiosis of rhizobia with legumes may have originated from beta-proteobacterial family. Furthermore, we found that there was a possibility that several genes which symbiosis function was not known so far are characteristic of root nodule bacteria. We confirm the symbiosis function of these genes by the gene destruction.
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Report
(7 results)
Research Products
(39 results)
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[Book] 進化学事典2011
Author(s)
日本進化学会編
Total Pages
996
Publisher
共立出版株式会社
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