Genome-wide identification of three-amino-acid-loop-extension gene family and their expression profile under hormone and abiotic stress treatments during stem development of .

Transcription factors encoded by the three-amino-acid-loop-extension (TALE) gene family play a key role in regulating plant growth and development, and are involved in plant hormone regulatory pathways and responses to various environmental stresses. Researchers are currently studying genes in different species, but genes have not yet been studied. Therefore, based on the genome, we found a total of 23 gene family members, which were distributed on eight chromosomes. genes contained the characteristic domains of this family, and could be divided into KNOTTED-like homeobox (KNOX) subfamily and BEL1-like homeobox (BELL) subfamily. They can form heterodimers with each other. Fragment duplication and tandem duplication events were the main reasons for the expansion of gene family members and the genes were selected by different degrees of purification. The inter-species collinearity analysis showed that the relationship between and other four species was consistent with the distance of origin. Eleven members of genes were specifically highly expressed in stem, mainly at the early stage of stem development. The cis-element analysis showed that the promoter of genes contained a variety of hormone and abiotic stress response elements, and four genes responded to two kinds of abiotic stresses and four kinds of hormones at the early stage of stem development. In conclusion, this study lays a foundation to explore the role of gene family in growth and development.