Identification and Expression Analysis of Transcription Factors in Carallia Brachiata Genome

Transcription factors are important regulatory factors in gene expression. To explore the role of transcription factors in the adaptation of Carallia brachiata to its environment, this study identified the transcription factor family across the genome and analyzed their expression in eight tissues (roots, stems, leaves, flowers, ovules, fruits, seeds, embryos). The results showed that a total of 2322 transcription factor from 91 families were identified. They were significantly enriched in 12 pathways including plant signal transduction, circadian rthythm, MAPK signaling pathway-plant and plant-pathogen interaction etc. Most genes were involved in environmental information processing and environmental adaptation through signal transduction. The results of expression analysis showed 204 genes were tissue-specific. Genes that were responsible for the signal transduction of cytokinine, auxin, gibberellin, jasmonic acid, salicylic acid were mainly expressed in root, stem, leaf, flower, ovule and fruit while the genes that involve in ethylene and abscisic acid signal transduction were only expressed in seed and embryo. This study suggested that the transcription factors regulated different tissues of C. brachiata by participating in different hormone response pathways, so as to regulate plant growth and development.