2000 Fiscal Year Final Research Report Summary
Molecular mechanisms of gametophytic self-incompatibility in Prunus species
| Project/Area Number |
09460018
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| Research Category |
Grant-in-Aid for Scientific Research (B).
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
園芸・造園学
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| Research Institution | KYOTO UNIVERSITY |
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Principal Investigator |
TAO Ryutaro Kyoto University, Graduate School of Agncalture, Lecturer, 農学研究科, 講師 (10211997)
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| Project Period (FY) |
1997 – 2000
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| Keywords | S-RNase / sweet cherry / Japanese apricot / Japanese plum / almond |
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| Research Abstract |
Prunus, one of the genera in the Rosaceae, includes important commercial fruit and nut tress species. Most of the Prunus species exhibit the monofactorial gametophytic self-incompatibility system which is controlled by a single locus, the S-locus, with multiple alleles. As Prunus species are unable to bear fruit parthenocarpically, they will not set fruit unless pollinated with cultivars with different S-genotypes. Thus, determination of correct pollen incompatibility groups and assignment of cultivars to the groups are essential for good crop production.
This study identifies S-RNases associated with self-incompatibility in sweet cherry, almond, Japanese plum, and Japanese apricot. cDNAs encoding the S-RNases have been cloned and DNA-sequenced, which leads to the development of a molecular typing system for S-alleles in these fruit species. Furthermore, S-RNase allele that can be used as a molecular marker for self-compatibility in Japanese apricot has been explored.
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