| Project/Area Number |
17K15217
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Crop production science
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| Research Institution | Kobe University |
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Principal Investigator |
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| Project Period (FY) |
2017-04-01 – 2019-03-31
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| Project Status |
Completed (Fiscal Year 2018)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2018: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2017: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | 野生イネ / 浮稲 / 洪水適応 / ストレス応答 / 浮稲性 / 低酸素応答 / 作物生産 |
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| Outline of Final Research Achievements |
In one accession of O. glumaepatula (W1246), it was suggested that the factor causing internode elongation under submergence is induced not mainly by ethylene. For the purpose of further verifying this point, we prepared stem segments which include uppermost internodes from three accessions with SNORKEL gene known to control floating ability in cultivated rice species, Oryza sativa, and internode elongation by submergence or ethylene treatment was evaluated. As a result, ethylene treatment did not induce internode elongation as submergence in any accessions. Therefore, the result suggests that ethylene does not play a central role in internode elongation in O. glumaepatula.
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| Academic Significance and Societal Importance of the Research Achievements |
地球温暖化の影響により，日本をはじめ東南アジア・インド・アフリカ中部・南米において洪
水頻度が増えることが予想されている。洪水頻度の増加は慣行的な作物栽培を困難にし，世界規模の食糧危機につながる恐れもある。このような環境下において，浮稲は作物生産が可能な唯一の作物である。本研究の成果から，南米野生イネO. glumaepatulaは栽培イネとは異なるメカニズムによって洪水に適応していると考えられ，それは将来需要の高まる恐れのある洪水多発環境での安定した作物生産において，有用な知見をもたらすと考えられる。
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