| RRC ID |
50397
|
| 著者 |
Kubo T, Yoshimura A, Kurata N.
|
| タイトル |
Genetic characterization and fine mapping of S25, a hybrid male sterility gene, on rice chromosome 12.
|
| ジャーナル |
Genes Genet Syst
|
| Abstract |
Hybrid male sterility genes are important factors in creating postzygotic reproductive isolation barriers in plants. One such gene, S25, is known to cause severe transmission ratio distortion in inter-subspecific progeny of cultivated rice Oryza sativa ssp. indica and japonica. To further characterize the S25 gene, we fine-mapped and genetically characterized the S25 gene using near-isogenic lines with reciprocal genetic backgrounds. We mapped the S25 locus within the 0.67-1.02 Mb region on rice chromosome 12. Further genetic analyses revealed that S25 substantially reduced male fertility in the japonica background, but not in the indica background. In first-generation hybrid progeny, S25 had a milder effect than it had in the japonica background. These results suggest that the expression of S25 is epistatically regulated by at least one partially dominant gene present in the indica genome. This finding supports our previous studies showing that hybrid male sterility due to pollen killer genes results from epistatic interaction with other genes that are hidden in the genetic background.
|
| 巻・号 |
92(4)
|
| ページ |
205-212
|
| 公開日 |
2018-2-10
|
| DOI |
10.1266/ggs.17-00012
|
| PMID |
28674278
|
| MeSH |
Chromosome Mapping / methods
Chromosomes, Plant*
Crosses, Genetic
Epistasis, Genetic
Genes, Plant
Hybridization, Genetic
Oryza / genetics*
Plant Infertility / genetics*
Pollen / genetics
|
| IF |
0.917
|
| 引用数 |
1
|
| リソース情報 |
| イネ |
AIS84
IAS73 |
