| Summary: | <i>Jejubacter calystegiae</i> KSNA2<sup>T</sup>, a moderately halophilic, endophytic bacterium isolated from beach morning glory (<i>Calystegia soldanella</i>), was determined to be a novel species in a new genus in the family <i>Enterobacteriaceae</i>. To gain insights into the genetic basis of the salinity stress response of strain KSNA2<sup>T</sup>, we sequenced its genome using two complementary sequencing platforms (Illumina HiSeq and PacBio RSII). The genome contains a repertoire of metabolic pathways, such as those for nitrogen, phosphorus, and some amino acid metabolism pathways. Functional annotation of the KSNA2<sup>T</sup> genome revealed several genes involved in salt tolerance pathways, such as those encoding sodium transporters, potassium transporters, and osmoprotectant enzymes. Plant growth-promoting bacteria-based experiments indicated that strain KSNA2<sup>T</sup> promotes the germination of vegetable seeds in saline conditions. Overall, the genetic and biological analyses of strain KSNA2<sup>T</sup> provide valuable insights into bacteria-mediated salt tolerance in agriculture.
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