Identification of NAC Transcription Factors in and Their Responses to Salt Stress.

NAC (NAM/ATAF1/2/CUC2) transcription factors regulate plant growth and development and stress responses. Because NAC transcription factors are known to play important roles in the regulation of salt tolerance in many plants, we aimed to explore their roles in the halophyte . Based on transcriptome sequencing data, we identified 25 transcription factor gene family members. In a phylogenetic tree analysis with NAC transcription factors, the SgNACs were divided into 10 groups. The physicochemical properties and conserved domains of the putative proteins, as well as the transcript profiles of their encoding genes, were determined for the 25 genes using bioinformatic methods. Most of the genes were upregulated to some extent after 24 h of salt stress, suggesting that they play an important role in regulating the salt tolerance of . These findings lay the foundation for further research on the functions and mechanisms of the gene family in .