Update info.Tools - Reference - Detail
Reference Detail
| Reference | ||
|---|---|---|
| Author | Qi D., Wen Q., Meng Z., Yuan S., Guo H., Zhao H., Cui S. | |
| Title | OsLFR is essential for early endosperm and embryo development by interacting with SWI/SNF complex members in Oryza sativa. | |
|
Abstract: Rice (Oryza sativa L.) endosperm provides the developing embryo with nutrients and provides human beings with a staple food. The embryo eventually develops into a new sporophyte generation. Despite their important roles, the molecular mechanisms underlying early-stage endosperm and embryo development remain elusive. Here, we established the fundamental functions of rice OsLFR, an ortholog of the Arabidopsis SWI/SNF chromatin-remodeling complex (CRC) component LFR. OsLFR was expressed primarily in the rice spikelets and seeds, and the OsLFR protein was localized to the nucleus. We conducted genetic, cellular and molecular analyses of loss-of-function mutants and transgenic rescue lines. OsLFR depletion resulted in homozygous lethality in the early seed stage through endosperm and embryo defects, which could be successfully recovered by the OsLFR genomic sequence. Cytological observations revealed that the OsLFR endosperm had relatively fewer free nuclei, had abnormal and arrested cellularization, and demonstrated premature programed cell death: the embryo was reduced in size and failed to differentiate. Transcriptome profiling showed that many genes, involved in DNA replication, cell cycle, cell wall assembly and cell death, were differentially expressed in a knockout mutant of OsLFR (OsLFR-1), which was consistent with the observed seed defects. Protein-protein interaction analysis showed that OsLFR physically interacts with several putative rice SWI/SNF CRC components. Our findings demonstrate that OsLFR, possibly as one component of the SWI/SNF CRC, is an essential regulator of rice seed development, and provide further insights into the regulatory mechanism of early-stage rice endosperm and embryo development. |
||
| Journal | Plant J. | |
| Country | China | |
| Volume | 104(4) | |
| Pages | 901-916 | |
| Year | 2020 | |
| PubMed ID | 32808364 | |
| PubMed Central ID | - | |
| DOI | 10.1111/tpj.14967 | |
| URL | - | |
| Relation | ||
| Gene | BIN1 BPH40 CCS52B CESA6 CHB703 CHR719 CSLA1 CSLA9 CSLC7 CYCB1;1 DSG1 GE1 HAZ1 LFR MCM2 MCM3 MCM4 MSRMK2 ND1 PNH1 ROC1 SAG12-2 SCR SWI3C VPE4 | |
| INSD | - | |
| Strain | Wild Core Collection | - |
| Induced Mutation Lines(NIG Collection) | - | |
| Sterile Seed Strain | - | |
|
Lethal Embryo Mutantion Strain |
- | |
|
Stages in Each Organ - Muant Lines (Gene) |
- | |
| Cultivated Varieties(NIG Collection) | - | |
| Stages in Each Organ | - | |
