Evolutionary Dynamics and Expression Divergence of the MADS-Box Gene Family During Recent Speciation of AA-Genome Oryza Species.

ABSTRACT: To investigate the evolutionary trajectory during the recent speciation of AA-genome Oryza species, we conducted a comprehensive analysis of the MADS-box gene family across eight Oryza species. We identified 1093 MADS-box genes in total and systematically examined their evolutionary history, gene family expansion, and expression divergence. Our results revealed that extensive lineage-specific expansions occurred in AA-genome Oryza species, which were primarily generated by proximal and tandem duplications, with a particularly notable episode in Type-I genes. Despite the significant expansion, Type-I genes were generally expressed at low levels or not expressed across various organs. In contrast, the expansion of Type-II genes was primarily observed in the

SUBMITTER: Tian J 

PROVIDER: S-EPMC11820988 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature