Genome-wide identification and functional characterization of the two-component system gene family in petunia reveals roles in hormone signaling and stress response.

ABSTRACT: The two-component system (TCS) regulates key processes in plant growth, development, and stress response. Although TCS genes have been studied in model plants such as Arabidopsis and tomato, in petunia (Petunia axillaris), a model ornamental species, they remain poorly characterized at the genome-wide level. This study aimed to perform a comprehensive genome-wide analysis of TCS genes in petunia and investigate their expression patterns in response to hormones and abiotic stresses. A total of 74 TCS genes were identified, comprising 24 histidine kinases/histidine kinase-like (HK(L)s), 10 histidine phosphotransfers (HPs), and 40 response regulators (RRs). Comprehensive analyses of gene structures, conserved domains, and phylogenetic relationships suggested potential evolutiona

SUBMITTER: Dai B 

PROVIDER: S-EPMC12745483 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature