2023 Fiscal Year Final Research Report
High temperature resistance mechanism of Japonica rice that dramatically improve the quality of brown rice under high temperature ripening
| Project/Area Number |
21K05554
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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 39020:Crop production science-related
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| Research Institution | Fukuoka Agricultural and Forestry Research Center |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
石橋 勇志 九州大学, 農学研究院, 教授 (50611571)
内川 修 福岡県農林業総合試験場, 農産部, チーム長 (50502465)
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| Project Period (FY) |
2021-04-01 – 2024-03-31
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| Keywords | 水稲 / 高温 / 玄米品質 / 遺伝 / 育種 / 品種改良 / 遺伝子発現 / ゲノム |
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| Outline of Final Research Achievements |
As global warming has been a problem, the quality of rice deteriorates due to high temperatures are also a problem. This study was conducted with the aim of clarifying the genetic factors that lead to the decline in rice quality.
When comparing the varieties used in this study that tend to deteriorate in quality under high temperatures with those that do not easily deteriorate in quality even under high temperatures, regions that cause quality deterioration were detected in the rice genome. They also found multiple genes with different expression levels in that region. These genes include genes involved in plant hormone metabolism and DNA transcription, and are thought to be involved in the deterioration of rice quality.
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| Free Research Field |
水稲玄米品質
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| Academic Significance and Societal Importance of the Research Achievements |
温暖化によりイネの生育期間が高温で経過することが常態化している現在、高温耐性はイネに求められる欠かせない形質であるとともに、高温による玄米品質の低下をいかにして抑えるかは重要な課題である。本研究は、玄米の品質に関わる遺伝領域を明らかにしたとともに、高温耐性をもたらした遺伝子やその機能の推定を行った。このことは、今後の品種改良や高温条件下における品質低下回避技術の開発に寄与することにつながるものと考えられる。
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