Catabolism of 4-aminobutyrate (GABA) and proteinogenic amino acids sustains the tricarboxylic acid cycle in Arabidopsis thaliana (L.) Heynh. plants under salinity stress.
Glutamate decarboxylases1,2,4 (GAD1,2,4) are calcium/calmodulin-activated enzymes that produce 4-aminobutyrate (GABA) and eventually lead to succinate (GABA shunt), which can theoretically be incorporated into the tricarboxylic acid cycle (TCAC) during abiotic stress. We tested the hypothesis that the GABA shunt is inv...