摘要
In a genome-wide association study,we identified a rice UDP-glycosyltransferase gene,OsUGT706D2,whose transcription was activated in response to cold and submergence stress and to exogenous abscisic acid(ABA).OsUGT706D2 positively regulated the biosynthesis of tricin-4’-O-(syringyl alcohol)ether-7-O-glucoside at both the transcriptional and metabolic levels.OsUGT706D2 mediated cold and submergence tolerance by modulating the expression of stress-responsive genes as well as the abscisic acid(ABA)signaling pathway.Gain of function of OsUGT706D2 increased cold and submergence tolerance and loss of function of OsUGT706D2 reduced cold tolerance.ABA positively regulated OsUGT706D2-mediated cold tolerance but reduced submergence tolerance.These findings suggest the potential use of OsUGT706D2 for improving abiotic stress tolerance in rice.
基金
jointly funded by National Natural Science Foundation of China(32372206)
the Natural Science Foundation of Guangdong Province(2023A1515030224,2023A0505090005,2021TQ06N115)
the Governor’s Special Program of 2023(Yuecainong[2023]No.145)
the Key Field Research and Development Project of Guangdong Province(2022B0202110003)
the Special Fund for Scientific Innovation Strategy-Construction of High Level Academy of Agriculture Science(R2020PY-JX001)
Guangdong Key Laboratory of New Technology in Rice Breeding(2023B1212060042)。
