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Reference Detail
| Reference | ||
|---|---|---|
| Author | Ma M., Shen S.Y., Bai C., Wang W.Q., Feng X.H., Ying J.Z., Song X.J. | |
| Title | Control of grain size in rice by TGW3 phosphorylation of OsIAA10 through potentiation of OsIAA10-OsARF4-mediated auxin signaling. | |
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Abstract: grain size is a key component of grain yield and quality in crops. Several core players of auxin signaling have been revealed to modulate grain size; however, to date, few genetically defined pathways have been reported, and whether phosphorylation could boost degradation of Aux/IAA proteins is uncertain. Here, we show that TGW3 (also called OsGSK5) interacts with and phosphorylates OsIAA10. Phosphorylation of OsIAA10 facilitates its interaction with OsTIR1 and subsequent destabilization, but this modification hinders its interaction with OsARF4. Our genetic and molecular evidence identifies an OsTIR1-OsIAA10-OsARF4 axis as key for grain size control. In addition, physiological and molecular studies suggest that TGW3 mediates the brassinosteroid response, the effect of which can be relayed through the regulatory axis. Collectively, these findings define a auxin signaling pathway to regulate grain size, in which phosphorylation of OsIAA10 enhances its proteolysis and potentiates OsIAA10-OsARF4-mediated auxin signaling. |
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| Journal | Cell Rep | |
| Country | China | |
| Volume | 42(3) | |
| Pages | 112187 | |
| Year | 2023 | |
| PubMed ID | 36871218 | |
| PubMed Central ID | - | |
| DOI | 10.1016/j.celrep.2023.112187 | |
| URL | - | |
| Relation | ||
| Gene | ARF2 D11 D2 DWARF4 EXPA18 EXPB3 IAA10 PHI1 TGW3 TIR1 | |
| INSD | - | |
| Strain | Wild Core Collection | - |
| Induced Mutation Lines(NIG Collection) | - | |
| Sterile Seed Strain | - | |
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Lethal Embryo Mutantion Strain |
- | |
|
Stages in Each Organ - Muant Lines (Gene) |
- | |
| Cultivated Varieties(NIG Collection) | - | |
| Stages in Each Organ | - | |
