Abstract
14-3-3 proteins are signal moderators in sensing various stresses and play essential functions in plant growth and development. Although, 14-3-3 gene families have been identified and characterized in many plant species, its evolution has not been studied systematically. In this study, the plant 14-3-3 family was comprehensively analyzed from green algae to angiosperm. Our result indicated that plant 14-3-3 originated during the early evolutionary history of green algae and expanded in terricolous plants. Twenty-six 14-3-3 genes were identified in the tea genome. RNA-seq analysis showed that tea 14-3-3 genes display different expression patterns in different organs. Moreover, the expression of most tea 14-3-3 genes displayed variable expression patterns under different abiotic and biotic stresses. In conclusion, our results elucidate the evolutionary origin of plant 14-3-3 genes, and beneficial for understanding their biological functions and improving tea agricultural traits in the future.
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