Genome-Wide Identification and Expression Profiling of () Gene Family in Barley ( L.).

Abscisic acid (ABA)-stress-ripening, or ABA-, stress-, and ripening-induced (ASR) proteins play an important role in responses to environmental stimuli. A total of ten barley were identified in this study, which were unevenly distributed on three chromosomes. ASRs from barley, wheat, , rice, maize, foxtail millet, and tomato were classified into two distinct clusters based on phylogenetic analysis. Notably, ASRs from Poaceae were evenly distributed between these two clusters. HvASRs contained a typical ABA/WDS domain, and exhibited similar motif arrangements. Two gene pairs of tandem duplicates ( and ) were identified among . -acting elements involved in hormone and stress responses, including ABRE, MYB, ARE, and STRE, were consistently identified in the promoters of . The expression of was substantially influenced by salt, osmotic, and ABA treatments in the roots and leaves of barley seedlings. acts as a transcriptional repressor, whereas serves as a transcriptional activator. These results enhance our understanding of the family and provide a foundation for further functional characterization.