MSD2-mediated ROS metabolism fine-tunes the timing of floral organ abscission in Arabidopsis.

ABSTRACT: The timely removal of end-of-purpose flowering organs is as essential for reproduction and plant survival as timely flowering. Despite much progress in understanding the molecular mechanisms of floral organ abscission, little is known about how various environmental factors are integrated into developmental programmes that determine the timing of abscission. Here, we investigated whether reactive oxygen species (ROS), mediators of various stress-related signalling pathways, are involved in determining the timing of abscission and, if so, how they are integrated with the developmental pathway in Arabidopsis thaliana. MSD2, encoding a secretory manganese superoxide dismutase, was preferentially expressed in the abscission zone of flowers, and floral organ abscission was accelerated by the ac

SUBMITTER: Lee J 

PROVIDER: S-EPMC9543660 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature