| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2011: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Research Abstract |
I investigated the molecular mechanisms governing embryo-endosperm ratio using five rice mutants, which are defective in embryo size. I found that the major determinant for embryo-endosperm size balance exists in endosperm region especially in embryo facing region of endosperm (EFR) rather than embryo region. In addition, I found that the establishment of layer structure through cell death of endosperm cell in EFR contributes embryo-endosperm size control. Identification and expression studies of RE genes and GEgene showed that these genes are required for establishing the proper size balance.
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