Genomic characterization of Microbacterium meiriae sp. nov., a novel bacterium isolated from the International Space Station.

ABSTRACT: During the microbial surveillance of the International Space Station (ISS) in April 2018, four Gram-stain positive bacterial strains, designated as F6_8S_P_2B^T, F6_8S_P_3A, F6_8S_P_3B and F6_8S_P_3C, belonging to the genus Microbacterium were isolated from the walls of crew quarters. All four strains exhibited high 16S rRNA gene sequence similarity (> 99%), low average nucleotide identity (93%), and < 49.7% digital DNA: DNA hybridization values with the closest recognized Microbacterium paraoxydans DSM 15019^T, delineating new phylogenetic branches within the genus. Further whole-genome sequencing (WGS) and phylogenomic analysis revealed a close genetic relationship (> 98% ANI; > 83% dDDH) between the ISS strains and Microbacterium sp. LTR1 strain isolated from the lar

SUBMITTER: Karouia F 

PROVIDER: S-EPMC12521503 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature