Genome-Wide Identification and Expression Analysis of Phytosulfokine Peptide Hormone Genes in <i>Camellia sinensis</i>.

ABSTRACT: Phytosulfokine (PSK) is a tyrosine-sulfated pentapeptide found throughout the plant kingdom, playing key roles in plant growth, development, and responses to biotic and abiotic stresses. However, there is still a lack of a comprehensive analysis of the CsPSK gene family in Camellia sinensis. In this study, we conducted a genome-wide identification and characterized 14 CsPSK genes in tea plants, which are unevenly distributed across seven chromosomes. CsPSK genes encode proteins ranging from 75 to 124 amino acids in length, all belonging to the PSK-α type and containing conserved PSK domains. A synteny analysis revealed that the expansion of the CsPSK gene family is primarily attributed to whole-genome duplication, with homology to Arabidopsis thaliana

SUBMITTER: Yang F 

PROVIDER: S-EPMC11942274 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature