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Regulation of abscisic acid (ABA) signaling is crucial in balancing responses to abiotic stresses and retaining growth in planta. An ABA receptor (PYL/RCAR) and a protein phosphatase (PP2C), a co-receptor, form a complex upon binding to ABA. Previously we reported that the second and fourth positions in the VxGΦL motif of PP2Cs from Oryza sativa are critical in the interaction of PP2Cs with PYL/RCARs...
In a previous report, the pepper receptor-like kinase 1 (CaRLK1) gene was shown to be responsible for negatively regulating plant cell death caused by pathogens via accumulation of superoxide anions. Here, we examined whether this gene also plays a role in regulating cell death under abiotic stress. The total concentrations of free amino acids in CaRLK1-overexpressed cells (RLKox) increased by twofold...
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