Endogenous melatonin mediated by OsCOMT enhances grain yield, nitrogen use efficiency, and grain quality in rice.
Excessive nitrogen (N) application in rice often leads to diminishing yield returns and compromises grain quality, presenting a key challenge for sustainable rice production. Here, we revealed that OsCOMT, a key regulator that modulates endogenous melatonin levels, simultaneously enhances grain yield, nitrogen use effi...