| Budget Amount *help |
¥41,990,000 (Direct Cost: ¥32,300,000、Indirect Cost: ¥9,690,000)
Fiscal Year 2018: ¥7,930,000 (Direct Cost: ¥6,100,000、Indirect Cost: ¥1,830,000)
Fiscal Year 2017: ¥7,930,000 (Direct Cost: ¥6,100,000、Indirect Cost: ¥1,830,000)
Fiscal Year 2016: ¥10,400,000 (Direct Cost: ¥8,000,000、Indirect Cost: ¥2,400,000)
Fiscal Year 2015: ¥15,730,000 (Direct Cost: ¥12,100,000、Indirect Cost: ¥3,630,000)
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| Outline of Final Research Achievements |
Genome-wide analysis of the evolutional radiation of S locus-related F-box genes were conducted to elucidate the evolutionary path to the establishment of the Prunus-specific S-RNase-based gametophytic self-incompatibility (GSI) system. The analysis indicated that the Prunus pollen S F-box gene, SFB, diverged from pollen S F-box genes of the Malinae (Rosaceae), Solanaceae, and Plantaginaceae. early after the establishment of the Eudicots. The analysis also indicated the Prunus SFB gene originated in a recent Prunus-specific gene duplication event, which could contribute to the establishment of the Prunus-specific GSI recognition mechanism. Both evolutional and biochemical analyses conducted strongly indicated that pollen expressed F-box genes (SLFLs) located close to the S locus of Prunus may be the so-called general inhibitor (GI) of the GI model explaining Prunus-specific GSI recognition mechanism.
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