| Budget Amount *help |
¥157,950,000 (Direct Cost: ¥121,500,000、Indirect Cost: ¥36,450,000)
Fiscal Year 2015: ¥27,820,000 (Direct Cost: ¥21,400,000、Indirect Cost: ¥6,420,000)
Fiscal Year 2014: ¥27,820,000 (Direct Cost: ¥21,400,000、Indirect Cost: ¥6,420,000)
Fiscal Year 2013: ¥29,380,000 (Direct Cost: ¥22,600,000、Indirect Cost: ¥6,780,000)
Fiscal Year 2012: ¥28,990,000 (Direct Cost: ¥22,300,000、Indirect Cost: ¥6,690,000)
Fiscal Year 2011: ¥43,940,000 (Direct Cost: ¥33,800,000、Indirect Cost: ¥10,140,000)
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| Outline of Final Research Achievements |
Self-incompatibility (SI) is an intraspecific reproductive barrier adopted by angiosperms that allows the pistil to distinguish between self and non-self pollen. In most species, the self/non-self recognition in SI is controlled by a large number of haplotypes (S1, S2, ---, Sn) at the S-locus. Each S-haplotype encodes both male-specificity and female specificity determinants (S-determinants), and the self/non-self discrimination is accomplished by the S-haplotype-specific interaction between these S-determinants. Therefore, the S-locus is an ideal target to study allelic and epistatic interactions. We focused on the following two types of "correlative gene system" involved in SI, and dissected their molecular mechanisms and their evolutionary histories. (1) Dominant-recessive interactions between S-determinant alleles. (2) Self- and nonself-specific interactions between male and female S-determinants.
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