2022 Fiscal Year Final Research Report
Development of conservation methods for beech forests based on genetic variation in drought-responsive genes within local populations
| Project/Area Number |
20K06124
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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 | Mie University |
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Principal Investigator |
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| Project Period (FY) |
2020-04-01 – 2023-03-31
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| Keywords | ブナ林 / 乾燥ストレス / 一塩基多型 / トランスクリプトーム解析 / 遊離プロリン |
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| Outline of Final Research Achievements |
The applicability of the drought-associated gene region reported in European beech to beech was investigated, and single nucleotide polymorphisms with synonymous and non-synonymous substitutions were detected. Field experiments using beech seedlings revealed that the osmotic regulator proline accumulates in leaves in response to drought stress. Furthermore, the expression of genes involved in lipid-degrading enzymes, glycoprotein biosynthesis, malate synthase activity and apoplast varied significantly between experimental treatments. We have elucidated some aspects of the physiological and molecular biological responses of beech to drought stress and have demonstrated information that will contribute to the biological markers and signals for monitoring future responses to drought stress.
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| Free Research Field |
森林生態遺伝学
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| Academic Significance and Societal Importance of the Research Achievements |
現代はこれまでにない急激な気候変動に曝されており，森林植生の保全対策のアップデートが喫緊の課題である．特に，環境変化に対して樹木が常に脆弱であることを前提にするのではなく，樹木自身に秘められた「環境に柔軟に適応していくことのできる能力」を的確に見極めることで対費用効果の高い保全方法を策定する必要性が生じている．本研究は，ブナに元来備わっている環境適応能力を解明することで，将来の気候環境下で要請される森林の保全技術に科学的根拠を提示できるという学術的意義があり，同時に森林保全を通じて森林のもつ公益的機能を十分に発揮させ，安全な人間社会の構築に資する社会的意義も併せ持つものと考えられる．
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