Identification of genes from the ICE-CBF-COR pathway under cold stress in - composite group and the evolution analysis with those from .

Adverse environmental conditions limit various aspects of plant growth, productivity, and ecological distribution. To get more insights into the signaling pathways under low temperature, we identified 10 C-repeat binding factors (), 9 inducer of CBF expression () and 10 cold-responsive () genes from - composite group under cold stress. Conserved amino acids analysis revealed that all CBF, ICE, COR contained specific and typical functional domains. Phylogenetic analysis of CBF proteins from showed that these CBF homologs were divided into 11 groups. CBFs from were found in every group, which shows that these CBFs generated prior to the divergence of the subfamilies of . The evolutionary relationship among the ICE and COR proteins in were divided into four groups with high multispecies specificity, respectively. Moreover, expression analysis revealed that mRNA accumulation was altered by cold treatment and the genes of three types involved in the ICE-CBF-COR signaling pathway were induced by cold stress. Together, the results make , , genes family in more abundant, and provide a starting point for future studies on transcriptional regulatory network for improvement of chilling tolerance in crop.