Genome-wide phylogenetic and structural analysis reveals the molecular evolution of the ABA receptor gene family.

摘要: The plant hormone abscisic acid (ABA) plays a crucial role during the life cycle as well in adaptive responses to environmental stresses. core regulatory components of ABA signaling plants are pyrabactin resistance1/PYR1-like/regulatory component receptor family (PYLs), which comprise largest known. They act negative regulators members protein phosphatase type 2C family. Due biological importance PYLs, many researchers have focused on their genetic redundancy and consequent functional divergence. However, little is understood evolution its impact generation diversity. In this study, we identify positive selection divergence PYLs through phylogenetic reconstruction, gene structure expression pattern analysis, comparison. We found correlation desensitization under specific modifications molecular recognition domain with diversification. Hence, an interesting antagonistic co-evolutionary mechanism proposed for diversification proteins. believe compensatory evolutionary pathway may occurred.