Assessing Evolutionary Divergence in Genome-Wide MADS-Box Genes and Expression Profiles Between <i>Toona ciliata</i> and <i>Toona sinensis</i>.

ABSTRACT: Toona ciliata and Toona sinensis, two economically important timber species in China, exhibit interspecific variation in floral traits that are related to mating systems. The MADS-box genes play a crucial role in floral patterning of angiosperms. Here we identified 97 and 75 MADS-box genes at the genome scale in T. ciliata and T. sinensis, respectively, which were classified into Type I and Type II groups. Genes within the same subfamily exhibited high homology and conserved motifs. Promoter analysis revealed cis-acting elements related to growth, light response, hormone signaling, and stress response. Gene duplication was prevalent, with several genes undergoing multiple duplications. Most MADS-box genes were under purifying selection between T. ciliata

SUBMITTER: Liu XH 

PROVIDER: S-EPMC12516090 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature