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Reference Detail
| Reference | ||
|---|---|---|
| Author | Ma B., Zhang L., Gao Q., Wang J., Li X., Wang H., Liu Y., Lin H., Liu J., Wang X., Li Q., Deng Y., Tang W., Luan S., He Z. | |
| Title | A plasma membrane transporter coordinates phosphate reallocation and grain filling in cereals. | |
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Abstract: Phosphate (Pi) is essential to plant growth and crop yield. However, it remains unknown how Pi homeostasis is maintained during cereal grain filling. Here, we identified a rice grain-filling-controlling PHO1-type Pi transporter, Ospho1;2, through map-based cloning. Pi efflux activity and its localization to the plasma membrane of seed tissues implicated a specific role for Ospho1;2 in Pi reallocation during grain filling. Indeed, Pi over-accumulated in developing seeds of the Ospho1;2 mutant, which inhibited the activity of ADP-glucose pyrophosphorylase (AGPase), important for starch synthesis, and the grain-filling defect was alleviated by overexpression of AGPase in Ospho1;2-mutant plants. A conserved function was recognized for the maize transporter ZmPHO1;2. Importantly, ectopic overexpression of Ospho1;2 enhanced grain yield, especially under low-Pi conditions. Collectively, we discovered a mechanism underlying Pi transport, grain filling and P-use efficiency, providing an efficient strategy for improving grain yield with minimal P-fertilizer input in cereals. |
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| Journal | Nat. Genet. | |
| Country | China | |
| Volume | 53(6) | |
| Pages | 906-915 | |
| Year | 2021 | |
| PubMed ID | 33927398 | |
| PubMed Central ID | - | |
| DOI | 10.1038/s41588-021-00855-6 | |
| URL | - | |
| Relation | ||
| Gene | AGPL2 AGPS2 PHO1;2 | |
| 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 | - | |
