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Reference Detail
| Reference | ||
|---|---|---|
| Author | Dai D., Zhang H., He L., Chen J., Du C., Liang M., Zhang M., Wang H., Ma L. | |
| Title | <i>Panicle Apical Abortion 7</i> Regulates Panicle Development in Rice (<i>Oryza sativa</i> L.). | |
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Abstract: The number of grains per panicle significantly contributes to rice yield, but the regulatory mechanism remains largely unknown. Here, we reported a loss-of-function mutant, <i>panicle apical abortion 7</i> (<i>PAA7</i>), which exhibited panicle abortion and degeneration of spikelets on the apical panicles during the late stage of young panicle development in rice. High accumulations of H2O2 in <i>PAA7</i> caused programmed cell death (PCD) accompanied by nuclear DNA fragmentation in the apical spikelets. Map-based cloning revealed that the 3 bp "AGC" insertion and 4 bp "TCTC" deletion mutation of <i>PAA7</i> were located in the 3'-UTR regions of <i>LOC_Os07g47330</i>, which was confirmed through complementary assays and overexpressed lines. Interestingly, <i>LOC_Os07g47330</i> is known as <i>FRIZZY PANICLE</i> (<i>FZP</i>). Thus, <i>PAA7</i> could be a novel allele of <i>FZP</i>. Moreover, the severe damage for panicle phenotype in <i>PAA7/LAX2</i> double mutant indicated that PAA7 could crosstalk with Lax Panicle 2 (LAX2). These findings suggest that PAA7 regulates the development of apical spikelets and interacts with LAX2 to regulate panicle development in rice. |
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| Journal | Int J Mol Sci | |
| Country | China | |
| Volume | 23(16) | |
| Pages | ||
| Year | 2022 | |
| PubMed ID | 36012754 | |
| PubMed Central ID | 9409353 | |
| DOI | 10.3390/ijms23169487 | |
| URL | - | |
| Relation | ||
| Gene | FTIP7 FZP HOX1 HOX28 LAX2 OSH1 SST YUCCA2 YUCCA5 YUCCA6 | |
| 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 | - | |
