OsPP65

| Categories genes  | Tags seedlings  ja  JA  salt  tolerance  ABA  salt stress  stress  stress tolerance  cytoplasm  nucleus  abscisic acid  jasmonic  jasmonic acid  phytohormone  ABA  stress response  osmotic stress  ja 
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  • Key message
    • OsPP65 was highly expressed in rice seedlings and leaves and localized in the nucleus and cytoplasm
    • Significantly higher induction of genes involved in jasmonic acid (JA) and abscisic acid (ABA) biosynthesis or signaling, as well as higher contents of endogenous JA and ABA, were observed in the OsPP65 knockout plants compared with the wild-type plants after osmotic stress treatment
    • Further analysis indicated that JA and ABA function independently in osmotic stress tolerance conferred by loss of OsPP65
    • These results together suggest that OsPP65 negatively regulates osmotic and salt stress tolerance through regulation of the JA and ABA signaling pathways and modulation of the raffinose family oligosaccharide metabolism pathway in rice
    • OsPP65 Negatively Regulates Osmotic and Salt Stress Responses Through Regulating Phytohormone and Raffinose Family Oligosaccharide Metabolic Pathways in Rice.
    • In this study, the functions of OsPP65 in rice osmotic and salt stress tolerance were investigated
    • Here, we report that OsPP65 is responsive to multiple stresses and is remarkably induced by osmotic and salt stress treatments
    • OsPP65 knockout rice plants showed enhanced tolerance to osmotic and salt stresses
    • OsPP65 is a promising target for improvement of rice stress tolerance using gene editing
    • Moreover, metabolomics analysis revealed higher endogenous levels of galactose and galactinol but a lower content of raffinose in the OsPP65 knockout plants than in the wild-type plants after osmotic stress treatment
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