Genome-Wide Identification and Characterization of NAC Family in Sieb. et Zucc. under Various Abiotic Stresses.

NAC transcription factor is one of the largest plant gene families, participating in the regulation of plant biological and abiotic stresses. In this study, 182 NAC proteins (HhNACs) were identified based on genomic datasets of Sieb. et Zucc (). These proteins were divided into 19 subfamilies based on their phylogenetic relationship, motif pattern, and gene structure analysis. Expression analysis with RNA-seq revealed that most were expressed in response to drought and salt stress. Research of quantitative real-time PCR analysis of nine selected supported the transcriptome data's dependability and suggested that was significantly upregulated under multiple abiotic stresses. Overexpression of in () significantly increased its tolerance to salt. This study provides a basis for a comprehensive analysis of NAC transcription factor and insight into the abiotic stress response mechanism in .