Reference - Detail
| RRC ID | 73619 |
|---|---|
| Author | Takehara K, Murata K, Yamaguchi T, Yamaguchi K, Chaya G, Kido S, Iwasaki Y, Ogiwara H, Ebitani T, Miura K. |
| Title | Thermo-responsive allele of sucrose synthase 3 (Sus3) provides high-temperature tolerance during the ripening stage in rice (Oryza sativa L.). |
| Journal | Breed Sci |
| Abstract |
High-temperature stress during the ripening stage leads to quality deterioration due to an increase in chalky grains in brown rice (Oryza sativa L.). In a previous study, we identified a QTL for Appearance quality of brown rice 1 (Apq1) using chromosome segment substitution lines of the indica cultivar 'Habataki' in the japonica cultivar 'Koshihikari' background and narrowed down the locus to a 48-kb region on chromosome 7. To verify the function and mechanisms of this QTL in grain appearance, in this study, we fine-mapped the gene and conducted high-temperature tolerance tests. As a result of the genetic mapping, we narrowed down the candidate region of Apq1 to a 19.4-kb region including three predicted genes. Among these, the temporal expression pattern of sucrose synthase 3 (Sus3) corresponded well with the high temperature-sensitive period during ripening, and expression of the 'Habataki' allele of Sus3 was increased under high-temperature condition. In addition, we transformed the 'Habataki' Sus3 gene into 'Nipponbare', and the transformants obtained high-temperature tolerance. Therefore, we conclude that the causal gene underlying the QTL Apq1 is the thermo-responsive Sus3 allele, and the increase in Sus3 expression under high-temperature condition during ripening leads to high-temperature tolerance in rice. |
| Volume | 68(3) |
| Pages | 336-342 |
| Published | 2018-6-1 |
| DOI | 10.1270/jsbbs.18007 |
| PII | 68_18007 |
| PMID | 30100800 |
| PMC | PMC6081304 |
| IF | 1.865 |
| Altmetric score |
オルトメトリクス指標項目
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| The most frequently cited source | X(Twitter) |
| Total number of mentions | 2 |
| Altmetric score changes over past 6months | 0.0 |
| Resource | |
| Arabidopsis / Cultured plant cells, genes | rpd00105 |