Identification and Expression Analysis of TCP Transcription FactorFamily Members in Dontostemon elegans
GU Yu-Feng, LIU Xin-Xin, Huerxidan•TUERXUN, GE Feng-Wei*
College of Life Science, Xinjiang Key Laboratory of Special Species Conservation and Regulatory Biology/Key Laboratory of Special Environment Biodiversity Application and Regulation in Xinjiang, Xinjiang Normal University, Urumqi 830017, China
Abstract：Dontostemon elegans is an important species in the desert ecosystem of Dabancheng, with excellent characteristics of drought resistance and salt tolerance. TCP (teosinte branched 1/cycloidea/proliferating cell factor) as a unique type of transcription factor in plants, the family is widely involved in the regulation of plant growth, development, and stress response. In this study, bioinformatics methods were used to identify the members of the TCP cell factor and analyzed their expression patterns. Twenty-two DeTCPs were identifiedfrom the transcriptome of D. elegans, and the proteins encoded by these members all contained a TCP domain. Phylogenetic analysis showed that DeTCPs could be divided into 2 categories and 3 subfamilies. The members of the same group had similar gene structures, and the distribution of conserved domains of the encodedproteins was similar. The expression pattern analysis showed the expression of the 5 DeTCPs members was tissue-specific in the D. elegans, 5 DeTCPs were significantly up-regulated under NaCl stress(P<0.05). UnderPEG stress, 3 DeTCPs were significantly up-regulated, and the relative expression of 2 DeTCPs was significantly down-regulated (P<0.05). In summary, this study showed that the members of the DeTCPs contained the basic characteristics, had tissue expression specificity, and responded to drought and salt stress.The members of the family might be involved in the regulation of drought and salt stress resistance. This study provides a data basis and basis for further mining the function of TCPs.
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