Inhibition of RNA degradation integrates the metabolic signals induced by osmotic stress into the Arabidopsis circadian system.

ABSTRACT: The circadian clock system acts as an endogenous timing reference that coordinates many metabolic and physiological processes in plants. Previous studies have shown that the application of osmotic stress delays circadian rhythms via 3'-phospho-adenosine 5'-phosphate (PAP), a retrograde signalling metabolite that is produced in response to redox stress within organelles. PAP accumulation leads to the inhibition of exoribonucleases (XRNs), which are responsible for RNA degradation. Interestingly, we are now able to demonstrate that post-transcriptional processing is crucial for the circadian response to osmotic stress. Our data show that osmotic stress increases the stability of specific circadian RNAs, suggesting that RNA metabolism plays a vital role in circadian clock coordination during

SUBMITTER: Prasetyaningrum P 

PROVIDER: S-EPMC10540740 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature