γ-Aminobutyric Acid Alleviates Cadmium Toxicity and Is Associated with Increased Ascorbate and Glutathione Levels in Brassica Species
γ-Aminobutyric acid (GABA) is a signaling metabolite involved in plant stress responses; its role in cadmium (Cd) stress adaptation in oilseed crops remains poorly understood. Here, we investigated the effects of exogenous GABA on Cd stress responses in two Brassica species, oilseed rape (Brassica napus, Bn) and Indian...