| Project/Area Number |
18K06379
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 45030:Biodiversity and systematics-related
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| Research Institution | Kyoto University |
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Principal Investigator |
Fuse Shizuka 京都大学, 理学研究科, 准教授 (30344386)
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| Co-Investigator(Kenkyū-buntansha) |
田村 実 京都大学, 理学研究科, 教授 (20227292)
高山 浩司 京都大学, 理学研究科, 准教授 (60647478)
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| Project Period (FY) |
2018-04-01 – 2024-03-31
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| Project Status |
Completed (Fiscal Year 2023)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Keywords | コバイモ節 / 花形態 / 分子系統 / 訪花昆虫 / 日本固有 / 絶滅危惧植物 / スプリング・エフェメラル / MIG-seq / コバイモ亜属 |
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| Outline of Final Research Achievements |
Fritillaria sect. Japonica (Liliaceae) is composed only of species endemic to Japan. Based on morphological character observation, maternal lineage estimation through plastid sequence analysis by Sanger method, and genetic diversity estimation through genome-wide analysis by MIG-seq, this plant group is now considered to consist of eight species, two infraspecific taxa, and three hybrids, rather than the previously recognized eight species and two hybrids. This indicates that the two plant groups should be treated independently: one was established by ancient hybridization; the other is being produced by ongoing hybridization, although the parent combination of the former is the same with that of the latter. Additionally, in both lineages with basic chromosome numbers of x=11 and x=12, tubular flowers were estimated to be ancestral. The flower-visiting insect fauna was clarified for a few species including Fritillaria amabilis Koidz., which has tubular flowers.
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| Academic Significance and Societal Importance of the Research Achievements |
コバイモ類（Fritillaria sect. Japonica）は日本の早春を彩る可憐な植物であるが、その多くが絶滅危惧種であり、生育環境の減少と盗掘被害によってこのままでは今後ますます個体数が減少すると予想される。本研究は、現在自生するコバイモ類の分類を再検討し、多様化に直接関与したであろう花形態の進化の方向性を示し、訪花昆虫など植物の繁殖に関わる知見を示した。これらは、植物の種分化に関する研究のみならず、コバイモ類の保全に大きく貢献する。
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