Evolutionary dynamics and functional diversification of BBX transcription factors in C₄ grasses from <i>Setaria italica</i> and <i>Setaria viridis</i>.

ABSTRACT:

Introduction

B-box (BBX) transcription factors are key regulators of plant development, growth, and responses to photoperiod. However, their evolutionary dynamics and functional diversification in C₄ grass crops are limited.

Methods and results

The study involved the identification and systematic analysis of 33 BBX genes from Setaria italica (16) and Setaria viridis (17), which were classified into subfamilies I, III, and IV based on phylogenetic relationships. Gene structure and motif analysis revealed conserved patterns within subfamilies, while chromosomal mapping and duplication analysis suggested that dispersed duplication was the primary driver of BBX gene family expansion, with all genes under purifying selection. Comparative gen

SUBMITTER: Liu J 

PROVIDER: S-EPMC12872835 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature