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Reference Detail
| Reference | ||
|---|---|---|
| Author | Lu F., Jiao G., Qiu J., Zhao S., Zhao F., Wang P., Chen L., Chen P., Li X., Dong N., Cao R., Li X., Ruan Z., Shao G., Hu S., Sheng Z., Xie L., Tang S., Hu P., Wei X. | |
| Title | A molecular module improves rice grain quality and yield at high temperatures. | |
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Abstract: Excessive temperatures during grain filling can compromise endosperm starch biosynthesis and decrease grain quality and yield in rice. However, the molecular mechanisms underlying these remain unclear. Here, we show that heat shock protein OsHsp40-1 interacts with and elevates the ATPase activity of OsHsp70-2 in rice. OsHsp40-1 also interacts with the key starch biosynthetic enzymes OsGBSSI and OsPPDKB and thereby enhances their stability and activity, which is essential for maintaining rice quality and grain yield under moderate high-temperature (HT) conditions. Overexpression of <i>OsHsp70-2</i> and <i>OsHsp40-1</i> in rice significantly improved grain quality and yield at HT. Furthermore, a haplotype analysis identified favorable alleles of <i>OsHsp70-2</i> and <i>OsHsp40-1</i>, which could be used for improving thermotolerance in rice. Collectively, our findings reveal a novel mechanism by which the OsHsp70-2-OsHsp40-1 module ameliorates the effects of HT on starch biosynthesis, providing a new strategy for genetic improvement of rice quality and yield under HT conditions. |
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| Journal | Natl Sci Rev | |
| Country | China | |
| Volume | 12(2) | |
| Pages | nwae416 | |
| Year | 2025 | |
| PubMed ID | 39868077 | |
| PubMed Central ID | 11759936 | |
| DOI | 10.1093/nsr/nwae416 | |
| URL | - | |
| Relation | ||
| Gene | DNLZ1 FLO11 FLO4 WX1 | |
| INSD | - | |
| Strain | Wild Core Collection | - |
| Induced Mutation Lines(NIG Collection) | - | |
| Sterile Seed Strain | - | |
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Lethal Embryo Mutantion Strain |
- | |
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Stages in Each Organ - Muant Lines (Gene) |
- | |
| Cultivated Varieties(NIG Collection) | - | |
| Stages in Each Organ | - | |
