論文 - 詳細
| RRC ID | 11423 |
|---|---|
| 著者 | Kubo T, Yamagata Y, Eguchi M, Yoshimura A. |
| タイトル | A novel epistatic interaction at two loci causing hybrid male sterility in an inter-subspecific cross of rice (Oryza sativa L.). |
| ジャーナル | Genes Genet Syst |
| Abstract |
Postzygotic reproductive isolation (RI) often arises in inter-subspecific crosses as well as inter-specific crosses of rice (Oryza sativa L.). To further understand the genetic architecture of the postzygotic RI, we analyzed genes causing hybrid sterility and hybrid breakdown in a rice inter-subspecific cross. Here we report hybrid male sterility caused by epistatic interaction between two novel genes, S24 and S35, which were identified on rice chromosomes 5 and 1, respectively. Genetic analysis using near-isogenic lines (NILs) carrying IR24 (ssp. indica) segments with Asominori (ssp. japonica) genetic background revealed a complicated aspect of the epistasis. Allelic interaction at the S24 locus in the heterozygous plants caused abortion of male gametes carrying the Asominori allele (S24-as) independent of the S35 genotype. On the other hand, male gametes carrying the Asominori allele at the S35 locus (S35-as) showed abortion only when the IR24 allele at the S24 locus (S24-ir) was concurrently introgressed into the S35 heterozygous plants, indicating that the sterility phenotype due to S35 was dependent on the S24 genotype through negative epistasis between S24-ir and S35-as alleles. Due to the interaction between S24 and S35, self-pollination of the double heterozygous plants produced pollen-sterile progeny carrying the S24-ir/S24-ir S35-as/S35-ir genotype in addition to the S24 heterozygous plants. This result suggests that the S35 gene might function as a modifier of S24. This study presents strong evidence for the importance of epistatic interaction as a part of the genetic architecture of hybrid sterility in rice. In addition, it suggests that diverse systems have been developed as postzygotic RI mechanisms within the rice. |
| 巻・号 | 83(6) |
| ページ | 443-53 |
| 公開日 | 2008-12-1 |
| DOI | 10.1266/ggs.83.443 |
| PII | JST.JSTAGE/ggs/83.443 |
| PMID | 19282622 |
| MeSH | Chromosome Mapping Crosses, Genetic Epistasis, Genetic* Genes, Plant / genetics* Hybridization, Genetic* Infertility / genetics* Oryza / genetics* Phenotype Polymorphism, Restriction Fragment Length Reproduction / genetics Species Specificity |
| IF | 0.917 |
| 引用数 | 33 |
| WOS 分野 | GENETICS & HEREDITY BIOCHEMISTRY & MOLECULAR BIOLOGY |
| オルトメトリクス指標 |
オルトメトリクス指標項目
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| 最多言及媒体 | Patent(IFI CLAIMS) |
| 各媒体での言及数の合計 | 3 |
| 過去6か月間でのオルトメトリクス指標の変動値 | 0.0 |
| リソース情報 | |
| イネ | CSSL |