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Reference Detail
| Reference | ||
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| Author | Xiang Y.H., Yu J.J., Liao B., Shan J.X., Ye W.W., Dong N.Q., Guo T., Kan Y., Zhang H., Yang Y.B., Li Y.C., Zhao H.Y., Yu H.X., Lu Z.Q., Lin H.X. | |
| Title | An alpha/beta hydrolase family member negatively regulates salt tolerance but promotes flowering through three distinct functions in rice. | |
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Abstract: Ongoing soil salinization drastically threatens crop growth, development, and yield worldwide. It is therefore crucial that we improve salt tolerance in rice by exploiting natural genetic variation. However, many salt-responsive genes confer undesirable phenotypes and therefore cannot be effectively applied to practical agricultural production. Here we successfully identified a quantitative trait locus (QTL) for salt tolerance from the African rice species Oryza glaberrima that we have named STH1. As an integration hub for salt tolerance and heading date, we found that STH1 regulates fatty acid metabolic homeostasis, probably through catalyzing the hydrolytic degradation of fatty acid, which contributes to salt tolerance. Meanwhile, we demonstrated that STH1 forms a protein complex with D3 and a vital regulatory factor in salt tolerance, OsHAL3, to affect the protein abundance of OsHAL3 by ubiquitination pathway. Furthermore, we revealed that STH1 also serves as a co-activator of the floral integrator gene heading date 1 (Hd1) to balance the expression of the florigen gene heading date 3a (Hd3a) under different circumstances, thus coordinating the regulation of salt tolerance and heading date. It is worth noting that the allele of STH1 associated with enhanced salt tolerance and high yield is partially found in African rice, but is hardly detected in Asian cultivars. Introgression of the allele of STH1HP46 from African rice into modern rice cultivars is a desirable approach for boosting grain yield under salt stress. Collectively, our discoveries not only show basic conceptual advances about the mechanism for salt tolerance and synergetic regulation between salt tolerance and flowering time, but also provide strategies to overcome the challenges that result from increasingly serious soil salinization. |
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| Journal | Mol Plant | |
| Country | China | |
| Volume | ||
| Pages | ||
| Year | 2022 | |
| PubMed ID | 36303433 | |
| PubMed Central ID | - | |
| DOI | 10.1016/j.molp.2022.10.017 | |
| URL | - | |
| Relation | ||
| Gene | D3 HAL3 HD3A SE1 STH1 | |
| 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 | - | |
