Comprehensive genome-wide identification and expression profiles of SAUR family genes in Fagopyrum tataricum

Abstract

Background Plant development and environmental adaptation are intricately regulated by hormones, with auxins playing a pivotal role in these processes. Within the auxin response family, the Small Auxin Up-regulated RNAs (SAURs) family holds a significant position in controlling plant development and responding to abiotic stress. However, investigations into this family in tartary buckwheat (Fagopyrum tataricum)are still lacking. The whole genome sequence of buckwheat offers a precious opportunity for comprehensive research on the genome-wide expression profile of the SAURs family. Results Based on the SAUR domain, 95 FtSAURs genes were identified in buckwheat. Additionally, the structure, evolution, and expression patterns of FtSAURs members were also analyzed. The FtSAURs genes exhibit diverse expression profiles across various developmental tissues and stages, revealing 27 tissue-specific expression genes and 35 hormone-responsive genes. Furthermore, under drought and salt stress conditions, 19 and 13 genes with current changes were detected, respectively. Notably, genes like FtSAUR30 have undergone significant changes after treatment, emerging as potential candidates for stress response. Conclusions Our research lays a valuable foundation for further analysis of the abiotic stress resistance mechanism in buckwheat.