PREMATURE SENESCENCE LEAF 50 Promotes Heat Stress Tolerance in Rice (Oryza sativa L.)

文献类型： 外文期刊

第一作者： He, Yan

作者： He, Yan;Zhang, Xiaobo;Shi, Yongfeng;Xu, Xia;Li, Liangjian;Wu, Jian-Li

作者机构：

关键词： Rice; Senescence; IMBR; Heat tolerance; Hydrogen peroxide

期刊名称：RICE （ 影响因子：4.783； 五年影响因子：5.23 ）

ISSN： 1939-8425

年卷期： 2021 年 14 卷 1 期

页码：

收录情况： SCI

摘要： Background Heat stress is a major environmental factor that could induce premature leaf senescence in plants. So far, a few rice premature senescent leaf mutants have been reported to involve in heat tolerance. Findings We identified a premature senescence leaf 50 (psl50) mutant that exhibited a higher heat susceptibility with decreased survival rate, over-accumulated hydrogen peroxide (H2O2) content and increased cell death under heat stress compared with the wild-type. The causal gene PREMATURE SENESCENCE LEAF 50 (PSL50) was isolated by using initial map-based resequencing (IMBR) approach, and we found that PSL50 promoted heat tolerance probably by acting as a modulator of H2O2 signaling in response to heat stress in rice (Oryza sativa L.). Conclusions PSL50 negatively regulates heat-induced premature leaf senescence in rice.

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