Elucidating the molecular basis of floral scent diversification driven by plant-pollinator mutualisms.
| Project/Area Number |
15H05604
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
Evolutionary biology
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| Research Institution | National Museum of Nature and Science, Tokyo |
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Principal Investigator |
Okuyama Yudai 独立行政法人国立科学博物館, 植物研究部, 研究主幹 (40522529)
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| Research Collaborator |
Kakishima Satoshi
Okamoto Tomoko
Nakazato Takeru
Nagano Atsushi
Kato Makoto
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| Project Period (FY) |
2015-04-01 – 2019-03-31
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| Project Status |
Completed (Fiscal Year 2018)
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| Budget Amount *help |
¥22,620,000 (Direct Cost: ¥17,400,000、Indirect Cost: ¥5,220,000)
Fiscal Year 2018: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2017: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2016: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2015: ¥9,230,000 (Direct Cost: ¥7,100,000、Indirect Cost: ¥2,130,000)
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| Keywords | 花香分析 / 送粉 / 比較ゲノム解析 / 遺伝子発現解析 / 生態的種分化 / 二次代謝 / ジメチルジスルフィド / 送粉生態 / 腐肉擬態 / 進化 / 分子系統学 / 送粉共生 / 多様化 / 揮発成分 / 送粉者 / 揮発性分 / トランスクリプトーム解析 / 遺伝子機能解析 / 進化生物学一般 |
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| Outline of Final Research Achievements |
We obtained the comprehensive datasets of floral scent profiles for the genus Asarum (Aristolochiaceae), Phyllanthus (Phyllanthaceae), and Mitella (Saxifragaceae). Especially we found that the species of the genus Asarum have complex and diverse floral scent profiles; even closely related species had strikingly dissimilar scent profiles. We surveyed the pollination systems for some Asarum species that have diverse floral scent profiles, and found that the pollinators were different among species. We successfully cloned some floral scent-associated genes from these plants. We further obtained the signature of expected divergent selection during ecological speciation in at least three floral scent-associated genes in the genus Mitella.
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| Academic Significance and Societal Importance of the Research Achievements |
植物の種の多様性が生じた背景には花粉を運ぶ昆虫（送粉者）との多様かつ特異的な関係が存在すると考えられる。本研究では日本で著しい多様化を遂げた植物の種群としてユキノシタ科チャルメルソウ属やウマノスズクサ科カンアオイ属を研究材料とすることで、送粉者との多様な関係を形作り、ひいては植物の種分化を促した重要な要素の一つとして花の香りの進化があった、という仮説を提唱し、それを部分的に実証することに成功した。
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Report
(5 results)
Research Products
(29 results)
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[Book] 多様な花が生まれる瞬間2018
Author(s)
斎藤 成也、塚谷 裕一、高橋 淑子、奥山 雄大
Total Pages
196
Publisher
慶應義塾大学出版会
ISBN
4766423003
Related Report
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