2023 Fiscal Year Final Research Report
Flexibility of mechanistic optimization of plant growth characteristics as a response to the environment
| Project Area | Elucidation of the strategies of mechanical optimization in plants toward the establishment of the bases for sustainable structure system |
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| Project/Area Number |
18H05490
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| Research Category |
Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
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| Allocation Type | Single-year Grants |
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| Review Section |
Complex systems
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| Research Institution | The University of Tokyo |
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Principal Investigator |
Fujiwara Toru 東京大学, 大学院農学生命科学研究科(農学部), 教授 (80242163)
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| Co-Investigator(Kenkyū-buntansha) |
三輪 京子 北海道大学, 地球環境科学研究院, 准教授 (50570587)
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| Project Period (FY) |
2018-06-29 – 2023-03-31
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| Keywords | 細胞壁 / 力学特性 / 栄養応答 |
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| Outline of Final Research Achievements |
Changes in plant growth in response to nutritional and other environmental conditions are accompanied by changes in plant mechanical properties. In addition, mechanical stimulation of plants causes changes in their growth. We studied this relationship, including the development of a method for measuring root mechanical properties. We developed a method to measure the mechanical properties of plant roots as a whole, and measured the properties of roots grown under different nutritional conditions, and found a correlation between root length and mechanical properties. The genes and phytohormones involved in the phenomenon of nutritropism were also identified. Furthermore, mechanical stimulation of plants was found to promote plant growth, depending on the plant species and types of stimulation. It was found that there is an interrelationship between growth changes and mechanical properties under the environmental conditions tested in this study.
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| Free Research Field |
植物栄養学
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| Academic Significance and Societal Importance of the Research Achievements |
本研究においては、植物の根の力学特性の測定法を開発し、これまでに知られていなかった栄養条件と植物の成長、力学特性の関係を明らかにした。また細胞壁成分の変化と根の力学特性の変化の関係についても知見を得た。これらの成果はこれまでに知られていなかった関係を明らかにしたものであり、学術的意義は高いと考えている。また、植物に力学刺激を与えることによって生育が変化し、条件によっては生育を促進することができることが明らかとなり、この手法を応用して植物の生産性を高めることができる可能性が示されたことが社会的意義として価値のあるものと考えている。
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