A GWAS-identified U-box E3 ligase MsPUB6 is positively regulated by MsDREB1C and contributes to drought tolerance in alfalfa
A novel regulatory module is revealed, MsDREB1C–MsPUB6, in which a DREB1 transcription factor positively regulates a U-box-type E3 ligase gene to contribute to drought tolerance in alfalfa.