| Budget Amount *help |
¥103,100,000 (Direct Cost: ¥103,100,000)
Fiscal Year 2010: ¥17,500,000 (Direct Cost: ¥17,500,000)
Fiscal Year 2009: ¥20,200,000 (Direct Cost: ¥20,200,000)
Fiscal Year 2008: ¥21,500,000 (Direct Cost: ¥21,500,000)
Fiscal Year 2007: ¥22,000,000 (Direct Cost: ¥22,000,000)
Fiscal Year 2006: ¥21,900,000 (Direct Cost: ¥21,900,000)
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| Research Abstract |
We performed isolation and functional analyses of four paired genes that interact with each other to cause reproductive barriers in inter-subspecific crosses between japonica and indica. These reproductive barrier genes showed various phenotypes including fertilization incompatibility, pollen germination defect, female sterility, and gamete sterility. We cloned a pair of duplicate genes, called DPL1 and DPL2, which cause the pollen germination defect. It was revealed that DPL1 and DPL2 are well conserved in dicot as well as monocot model plants, and many plant species have a duplicated gene copies on their nuclear genome.
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