Abstract
The protein phosphatase 2C (PP2C) gene family, which is known to participate in cellular processes, is one of the most conserved plant-specific gene families that regulate signal transduction in eukaryotic organisms. However, the PP2C gene family of Glycyrrhiza uralensis Fisch. has not yet been systematically characterized. In this study, 76 PP2C genes of G. uralensis (GuPP2Cs) were identified. Phylogenetic analysis divided these GuPP2Cs into 12 subfamilies. The gene structure and protein motifs of the GuPP2Cs were then analysed. The analysis of the transcriptomic data of the GuPP2Cs revealed that nine genes were highly sensitive to abscisic acid (ABA) stress and might respond to ABA treatment. These nine genes were validated via quantitative real-time polymerase chain reaction. This study provides a foundation for future studies on the functional PP2C genes of G. uralensis and the improvement of the cultivation and quality of G. uralensis.
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