| Categories genes  | Tags pollen  flower  sterility  fertility  temperature  cell death  auxin  panicle  grain  quality  gibberellin  grain yield  yield  cytokinin  architecture  breeding  height  plant height  Gibberellin  plant architecture  auxin biosynthesis  grain shape 
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  • Key message
    • Here we report that decreased expression of OsPDCD5 caused by antisense technology could induce pollen sterility in photoperiod-sensitive rice
    • Constitutive expression of OsPDCD5 from the cauliflower mosaic virus (CaMV) 35S promoter induced programmed cell death (PCD) in transgenic rice
    • Down-regulation of the OsPDCD5 gene induced photoperiod-sensitive male sterility in rice
    • In F1 hybrids made from transgenic plants with antisense-OsPDCD5 and japonica rice varieties, lower transcript inhibition could restore fertility, under certain photoperiod and temperatures
    • OsPDCD5, is an ortholog to mammalian programmed cell death 5 gene
    • ) programmed cell death 5 (OsPDCD5) gene in rice plant
    • Overexpression of the OsPDCD5 gene induces programmed cell death in rice
    • Transcriptome analysis showed that OsPDCD5 knockout affected auxin biosynthesis, as well as the gibberellin and cytokinin biosynthesis and signaling pathways
    • Targeted mutagenesis of OsPDCD5 enhanced grain yield and improved plant architecture by increasing plant height and optimizing panicle type and grain shape
    • OsPDCD5 negatively regulates plant architecture and grain yield in rice
    • OsPDCD5 interacted directly with OsAGAP, and OsAGAP positively regulated plant architecture and grain yield in rice
    • Collectively, these findings demonstrate that OsPDCD5 is a promising candidate gene for breeding super rice cultivars with increased yield potential and superior quality
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