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Bacterial diacetyl suppresses abiotic stress-induced senescence in Arabidopsis
Sunil K Singh1, Yazhou Sun1,2, Yu Yang1
1Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, the Chinese Academy of Sciences, Shanghai, 201602, China.
Abstract:
Premature plant senescence induced by abiotic stresses is a major cause of agricultural losses worldwide. Tools for suppressing stress-induced plant senescence are limited. Here, we report that diacetyl, a natural compound emitted by the plant-beneficial bacterium Bacillus amyloliquefaciens, suppresses abscisic acid -mediated foliar senescence in Arabidopsis thaliana under various abiotic stress conditions. Our results establish diacetyl as an effective protector against stress-induced plant senescence and reveal a molecular mechanism for bacteria-enhanced plant stress resistance.
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