γ-Aminobutyric acid-mediated regulation of osmolytes, nitrogen metabolism, and antioxidant defense confers dose-dependent drought tolerance in mungbean.
BACKGROUND Drought severely limits mungbean (Vigna radiata) growth by disrupting physiological and metabolic processes. Although γ-aminobutyric acid (GABA) enhances abiotic stress tolerance, its dose-dependent effects across different drought intensities in mungbean remain unclear. RESULTS This study evaluated the ef...