Genome-Wide Identification, Characterization, and Expression Analysis of the Gene Family in .

NAC proteins play an essential role in the growth and development of litchi, especially during reproductive development. However, a comprehensive analysis of the litchi gene family is currently absent. Based on information from the litchi genome, we found that the 112 NAC genes of litchi show an uneven distribution on the chromosomes. Phylogenetic and conserved structural domain analyses indicated that different types of variability were exhibited in the family of litchi NACs (LcNACs). Gene covariance analysis showed that the showed better similarity in the same genus than with . We further investigated the differential expression patterns of in buds and rudimentary leaves of litchi. qRT-PCR results implied that they were involved in the process. Profiling of promoter elements in litchi showed that they were extensively involved in light response, phytohormone regulation, abiotic stress response, and plant growth and development processes. This study provides new insights into the identification, structural characterization, tissue-specific expression analysis, and promoter response elements of . It reveals the characteristics of the and lays the foundation for the subsequent understanding of its biological functions and molecular regulatory mechanisms.