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Reference Detail
| Reference | ||
|---|---|---|
| Author | Jeong K., Baten A., Waters D.L., Pantoja O., Julia C.C., Wissuwa M., Heuer S., Kretzschmar T., Rose T.J. | |
| Title | Phosphorus remobilization from rice flag leaves during grain filling: an RNA-seq study. | |
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Abstract: The physiology and molecular regulation of phosphorus (P) remobilization from vegetative tissues to grains during grain filling is poorly understood, despite the pivotal role it plays in the global P cycle. To test the hypothesis that a subset of genes involved in the P starvation response are involved in remobilization of P from flag leaves to developing grains, we conducted an RNA-seq analysis of rice flag leaves during the preremobilization phase (6 DAA) and when the leaves were acting as a P source (15 DAA). Several genes that respond to phosphate starvation, including three purple acid phosphatases (OsPAP3, OsPAP9b and OsPAP10a), were significantly up-regulated at 15 DAA, consistent with a role in remobilization of P from flag leaves during grain filling. A number of genes that have not been implicated in the phosphate starvation response, OsPAP26, SPX-MFS1 (a putative P transporter) and SPX-MFS2, also showed expression profiles consistent with involvement in P remobilization from senescing flag leaves. Metabolic pathway analysis using the KEGG system suggested plastid membrane lipid synthesis is a critical process during the P remobilization phase. In particular, the up-regulation of OsPLDz2 and OsSQD2 at 15 DAA suggested phospholipids were being degraded and replaced by other lipids to enable continued cellular function while liberating P for export to developing grains. Three genes associated with RNA degradation that have not previously been implicated in the P starvation response also showed expression profiles consistent with a role in P mobilization from senescing flag leaves. |
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| Journal | Plant Biotechnol. J. | |
| Country | Australia | |
| Volume | ||
| Pages | ||
| Year | 2016 | |
| PubMed ID | 27228336 | |
| PubMed Central ID | - | |
| DOI | 10.1111/pbi.12586 | |
| URL | - | |
| Relation | ||
| Gene | CAX1A LTN1 PAP10A PAP1D PAP26 PAP3C PAP9B PHF1 PHO1;1 PLDzeta1 PLDzeta2 PT14 PT16 PT19 PT20 PT22 PT5 PT8 RNS4 SPX-MFS1 SPX-MFS2 SPX1 SPX2 SQD2.2 | |
| 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 | - | |
