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2021 Fiscal Year Final Research Report

A study of limiting factors for sucrose synthesis in rice leaves

Research Project

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Project/Area Number 19K15825
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 39020:Crop production science-related
Research InstitutionTakasaki University of Health and Welfare

Principal Investigator

Hashida Yoichi  高崎健康福祉大学, 農学部, 助教 (00802886)

Project Period (FY) 2019-04-01 – 2022-03-31
Keywordsイネ / 糖代謝 / ショ糖合成 / SPS / cFBPase / ゲノム編集
Outline of Final Research Achievements

To reveal limiting factor for sucrose synthesis in rice leaves, we characterized multiple mutants of 5 genes encoding sucrose phosphate synthase (SPS) under different environmental conditions. Our results suggest that 3 SPS genes play more important role in translocation from rice leaves than 2 SPS genes which has believed to play a major role in rice leaves. Our results highlight the importance of elucidating differences in physiological function of each SPS gene.

Free Research Field

作物生理学

Academic Significance and Societal Importance of the Research Achievements

作物の葉におけるショ糖合成は、転流効率の制御を通じて作物の生産性に重要な役割を果たしている。本研究によりイネの葉におけるショ糖合成能の制限要因について、これまで想定されてきたSPS遺伝子よりもむしろ別のSPS遺伝子のほうが重要な可能性が示唆された。本研究で得られた知見をもとにイネの葉のショ糖合成能の向上にむけた研究が進むことで、ショ糖合成をターゲットとしたイネの品種改良、ひいては生産性の向上につながることが期待される。

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Published: 2023-01-30  

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