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

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 h...

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Published in:Rice (New York, N.Y.) N.Y.), 2021-12, Vol.14 (1), p.53-53, Article 53
Main Authors: He, Yan, Zhang, Xiaobo, Shi, Yongfeng, Xu, Xia, Li, Liangjian, Wu, Jian-Li
Format: Article
Language:English
Subjects:
Agriculture
Biomedical and Life Sciences
Cell death
Environmental factors
Heat stress
Heat tolerance
Hydrogen peroxide
IMBR
Leaves
Life Sciences
Mutants
Oryza sativa
Plant Breeding/Biotechnology
Plant Ecology
Plant Genetics and Genomics
Plant Sciences
Rice
Senescence
Short Communication
Survival
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Summary: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 (H 2 O 2 ) 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 H 2 O 2 signaling in response to heat stress in rice ( Oryza sativa L.). Conclusions PSL50 negatively regulates heat-induced premature leaf senescence in rice.
ISSN:1939-8425
1939-8433
1934-8037
DOI:10.1186/s12284-021-00493-w