Genetic studies on the S1 gene, which induces sterility in heterozygotes in rice

2015 Fiscal Year Final Research Report

• Project/Area Number: 26850003
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Science in genetics and breeding
• Research Institution: Kyoto University
• Principal Investigator: Koide Yohei 京都大学, 白眉センター, 助教 (70712008)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Keywords: イネ / 雑種不稔 / アフリカイネ

Outline of Final Research Achievements

To utilize the inter-specific hybrid vigor, it is necessary to understand the genetic mechanisms inducing hybrid sterility, which is a major obstacle for using hybrids in rice. Previous studies showed that the S1 chromosomal region causes seed sterility in hybrids between African rice species, O. glaberrima and Asian rice species, O. sativa. In this study, I used a mutant for hybrid sterility induced by the S1 chromosomal region. By using RNA-seq analysis, I identified one candidate gene carrying the mutation. I revealed that hybrid sterility phenotype is complemented by transformation of the candidate gene into the mutant.

Free Research Field

農学