Genome-wide identification of heat stress transcription factors and preliminary analysis of heat stress responses in Capsicum chinense Jacq.

Based on bioinformatics, 28 HSF candidate genes were identified in the whole genome sequence of Capsicum chinense Jacq. The chromosome distribution, gene structure, and 3D characteristics of these candidate genes were analyzed. Results showed that the protein length of the 28 candidate genes ranged from 128 to 526 aa. Phylogenetic analysis showed that HSF could be divided into A, B, and C subfamilies. In total, 27 HSF transcripts were detected by RNA-seq. Compared with the control group, 25 genes in the experimental group exhibited different responses under heat stress.