2023 Fiscal Year Final Research Report
Effects of rapid environmental changes on ecological and evolutionary processes in forest plants
| Project/Area Number |
19K06150
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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 40010:Forest science-related
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| Research Institution | Teikyo University of Science & Technology (2021-2023)
Nihon University (2019-2020) |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
平尾 聡秀 東京大学, 大学院農学生命科学研究科(農学部), 講師 (90598210)
石塚 航 地方独立行政法人北海道立総合研究機構, 森林研究本部 林業試験場, 主査 (80739508)
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| Project Period (FY) |
2019-04-01 – 2024-03-31
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| Keywords | シカ不嗜好性植物 / 集団ゲノム解析 |
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| Outline of Final Research Achievements |
In recent years, the population of deer has been rapidly increasing in Japanese forests. In response, the number of deer-preferring plants has decreased, while the number of deer-unpreferring plants has increased, which has affected the ecosystem. In this study, we conducted a genetic population structure analysis of two species of deer non-preferring plants in Chloranthaceae. Analyzed individuals were collected from several populations across Japan, and whole genome sequencing and population genome analyses were conducted using next-generation sequencers. The results showed that the sympatric Chloranthus quadrifolius and C. serratus have a large genetic distance from each other, indicating that at least large-scale gene flow has not occurred. In addition, the genetic structure of each species was isolated by distance.
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| Free Research Field |
進化生態学
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| Academic Significance and Societal Importance of the Research Achievements |
シカの個体数増加は森林内に生育する植物の種構成に影響を及ぼし、観光や産業にも負の波及効果をもたらしている。特に、シカ不嗜好性植物は森林内で過度に増加するため、適切な個体群管理が必要となる。本研究課題で対象としたシカ不嗜好性植物の近縁2種は、花の形態的特徴に違いが見られるが、その一方で遺伝的な集団構造には際立った違いは見られなかった。このことは、森林内で増加するヒトリシズカとフタリシズカの個体群管理を実施する際には、同じような手法を適用できる可能性があることを示唆している。
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