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Reference Detail
| Reference | ||
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| Author | Li L., Wang F., Yan P., Jing W., Zhang C., Kudla J., Zhang W. | |
| Title | A phosphoinositide-specific phospholipase C pathway elicits stress-induced Ca(2+) signals and confers salt tolerance to rice. | |
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Abstract: In animal cells, phospholipase C (PLC) isoforms predominantly hydrolyze phosphatidylinositol-4,5-biphosphates [PtdIns(4,5)P2 ] into the second messengers diacylglycerol (DAG) and inositol 1,4,5-trisphosphate [Ins(1,4,5)P3 ] to regulate diverse biological processes. By contrast, the molecular mechanisms and physiological significance of PLC signaling in plants still awaits full elucidation. Here, we identified a rice (Oryza sativa cv) PI-PLC, OsPLC1, which preferred to hydrolyze phosphatidylinositol-4-phosphate (PtdIns4P) and elicited stress-induced Ca(2+) signals regulating salt tolerance. Analysis by ion chromatography revealed that the concentration of PtdIns4P was c. 28 times of that of PtdIns(4,5)P2 in shoots. OsPLC1 not only converted PtdIns(4,5)P2 but also - and even more efficiently - converted PtdIns4P into DAG and Ins(1,4,5)P3 in vitro and in vivo. Salt stress induced the recruitment of OsPLC1 from cytoplasm to plasma membrane, where it hydrolyzed PtdIns4P. The stress-induced Ca(2+) signaling was dependent on OsPLC1, and the PLC-mediated Ca(2+) signaling was essential for controlling Na(+) accumulation in leaf blades, thus establishing whole plant salt tolerance. Our work identifies a conversion pathway and physiological function for PtdIns4P pools in rice and reveals the connection between phosphoinositides and Ca(2+) signals mediated by PLC during salt stress responses. |
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| Journal | New Phytol. | |
| Country | China | |
| Volume | 214(3) | |
| Pages | 1172-1187 | |
| Year | 2017 | |
| PubMed ID | 28157263 | |
| PubMed Central ID | - | |
| DOI | 10.1111/nph.14426 | |
| URL | - | |
| Relation | ||
| Gene | BZIP23 CDPK13 CML31 LEA3-1 NHX1 PIPLC1 PLC2 PLC3 PLC4 RAB16D | |
| 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 | - | |
