Comparative genomics uncovers adaptive and biotechnological potential of Enterobacter xiangfangensis MDMC82 isolated from desert, and highlights putative core Enterobacteriaceae functions.

Deserts are among the most hostile terrestrial ecosystems, where all life forms face harsh environmental constraints. Indigenous desert bacteria have developed special survival mechanisms, making them valuable resources for uncovering interesting biotechnological traits. This study investigates the genetic basis of environmental adaptation and biotechnological potential in Enterobacter xiangfangensis MDMC82 isolated from the Merzouga desert in Morocco. Genomic analysis predicted a robust apparatus involved in heat/cold shock response, drought and salinity tolerance, carbon storage/starvation response, polyamine metabolism, DNA repair, biofilm formation, motility, heavy metal resistance, aromatic compound degradation, and a variety of industrial enzymes, reflecting remarkable genome plasticity. Pan-genome analysis and COG classification highlighted pronounced metabolic and transcriptional versatility among environmental E. xiangfangensis isolates. Their core-based phylogenetic patterns in relation to their ecological niches were also discussed. Homologous gene analysis revealed a conserved repertoire of environmental adaptation genes across different taxonomic levels of the Enterobacteriaceae family, suggesting shared ecological strategies. To our knowledge, this is the first genomic analysis of an E. xiangfangensis isolate from desert environment. The study provides favorable support for its further exploration for environmental and industrial purposes, and sheds light on the genomic basis of putative core functions across higher taxonomic levels within the Enterobacteriaceae family.