MsAREB1 enhances combined cold and saline-alkali stress tolerance by promoting ascorbic acid biosynthesis in alfalfa.

ABSTRACT: Cold and saline-alkali stress are typical abiotic stresses on forage in middle and high latitudes, and they frequently occur simultaneously, decreasing the yield and quality of forage. Ascorbic acid plays an essential role in reactive oxygen species metabolism in response to abiotic stress. However, the molecular mechanisms of ascorbic acid biosynthesis induced by combined cold and saline-alkali stress remain unclear. This study identified an abscisic acid-responsive element-binding protein/ABRE-binding factors transcription factor (TF), MsAREB1, which was significantly induced by the combined stress and abscisic acid treatment. Under combined stress, MsAREB1 overexpression regulated ascorbic acid biosynthesis and played a role in the defence response to combined stress by positively regul

SUBMITTER: Guo W 

PROVIDER: S-EPMC12310818 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature