Aldo-keto reductase （AKR） is widely present in various organisms and plays key roles in plant growth， development and stress responses. Bermudagrass （Cynodon dactylon （L.） Pers.） exhibits rapid growth and strong comprehensive stress tolerance， making it widely utilized in landscaping， turfgrass for sports fields， ecological restoration and forage production. In this study， a total of 88 members of AKR gene family were identified from the bermudagrass genome， which were clustered into 7 subfamilies and unevenly distributed across the 30 chromosomes of bermudagrass. Analysis of cis-acting elements in the promoter regions indicated that all the members contain varying numbers of light-responsive， hormone-responsive and stress-responsive elements， suggesting that this gene family may be involved in multiple growth， developmental， and stress response processes. Different AKR gene members exhibited distinct expression patterns under different salt treatment durations and in different organs. The overall expression response intensity of genes in roots was generally higher than that in leaves， with a greater number of genes being upregulated， whereas most genes in leaves were downregulated. Among them， CdAKR15， CdAKR30， CdAKR43， CdAKR48， CdAKR72， and CdAKR80 showed significant differences in expression levels under different salt stress durations. This study lays a foundation for further investigation of the response of bermudagrass AKR genes to salt stress.

Cynodon dactylon  /  Aldo-keto reductase genes  /  Bioinformatics analysis  /  Salt stress  /  Expression analysis