The miR164b-SiNAC015 Module Regulates Drought Tolerance by Scavenging Reactive Oxygen Species in Foxtail Millet.

ABSTRACT: Drought is the major abiotic stress threatening global crop yields, thus identifying potential candidates with promising breeding value has become a central goal of current breeding programmes. Here, we found that miR164b functions as a negative regulator in plant drought tolerance, whose expression is dramatically inhibited under drought stress. Overexpressing MIR164b reduced the drought tolerance, while STTM164 transgenic seedlings showed enhanced drought tolerance in foxtail millet. We further identified that NAC (NAM-ATAF1/2-CUC2) transcription factor SiNAC015 was a target of miR164b. The sinac015 mutants showed attenuated drought tolerance, whereas overexpressing mSiNAC015 (miR164b-resistant version) improved drought tolerance in foxtail millet. Genetic evidence indicated that SiNAC01

SUBMITTER: Xiao T 

PROVIDER: S-EPMC12946526 | biostudies-literature | 2026 Mar

REPOSITORIES: biostudies-literature