Genome-wide identification, evolution and expression of the <i>CPP</i> gene family in six Theaceae species.

ABSTRACT: The Cysteine-rich polycomb-like protein (CPP) gene family encodes transcription factors that function as key regulators in various plant processes, including growth, development, and responses to environmental stresses. However, systematic analysis of this gene family in Theaceae plants remains limited. In this study, we comprehensively identified and analyzed the CPP gene family in six Theaceae species, revealing a total of 65 members that were phylogenetically classified into two distinct subfamilies. Multiple sequence alignment revealed that all CPP proteins contain conserved CXC domains (C1 and C2) and an intervening R motif. Gene structure analysis indicated that Class II genes are more conserved, with a predominant structure of 8 exons (71% of members). In contrast, Class I ge

SUBMITTER: Zheng W 

PROVIDER: S-EPMC12643006 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature