N-glycosylation of SnRK2s affects NADPH maintenance in peroxisomes during prolonged ABA signalling.

ABSTRACT: Unfavourable conditions, such as prolonged drought and high salinity, pose a threat to the survival and agricultural yield of plants. The phytohormone ABA plays a key role in the regulation of plant stress adaptation and is often maintained at high levels for extended periods. While much is known about ABA signal perception and activation in the early signalling stage, the molecular mechanism underlying desensitization of ABA signalling remains largely unknown. Here we demonstrate that in the endoplasmic reticulum (ER)-Golgi network, the key regulators of ABA signalling, SnRK2.2/2.3, undergo N-glycosylation, which promotes their redistribution from the nucleus to the peroxisomes in Arabidopsis roots and influences the transcriptional response in the nucleus during prolonged ABA signalling.

SUBMITTER: Lu J 

PROVIDER: S-EPMC11300913 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature