Genome-wide identification of the gene family in and their response to environmental stress.

The heat shock protein 70 (HSP70) gene family plays a crucial role in the response of organisms to environmental stress. However, it has not been systematically characterized in shrimp. In this study, we identified 25 genes in the genome. The encoded proteins were categorized into six subgroups based on phylogenetic relationships. Tandem duplication was the main driver of amplification in the family, and the genes have experienced strong purifying selection during evolution. Transcriptome data analysis revealed that the 25 members have different expression patterns in shrimp under conditions of low temperature, low salinity, and white spot syndrome virus infection. Among them, was significantly induced under all three stress conditions, suggesting that this gene plays an important role in response to environmental stress in . To the best of our knowledge, this is the first study to systematically analyze the gene family in shrimp. The results provide important information on shrimp Hsp70s, contributing to a better understanding of the role of these genes in environmental stress and providing a basis for further functional studies.