OsSAP3 Enhances Rice Seed Vigor by Modulating Hydrogen Peroxide Homeostasis

treatment could restore the seed vigor of Ossap3 by accelerating ABA degradation, suppressing ABA signaling, and enhancing starch mobilization via α-amylase-mediated hydrolysis to increase soluble metabolites. These regulatory mechanisms mediated by OsSAP3 are crucial for enhancing rice seed vigor and broadening temperature adaptability during seed germination, providing critical insights into the molecular mechanisms underlying seed vigor regulation.