期刊
MICROORGANISMS
卷 8, 期 5, 页码 -出版社
MDPI
DOI: 10.3390/microorganisms8050668
关键词
antibiotic susceptibility; Atacama Desert; Laguna Chaxa; lithium tolerance; Novobiocin resistance; osmoregulation; Staphylococcus sciuri; Salar de Atacama
类别
资金
- CONICYT Chile [CeBiB FB-0001]
- Universidad de Antofagasta, Semillero de Investigacion [5305]
- Universidad de Antofagasta, Chile
In addition to the industrial and biomedical applications of lithium, information on the tolerance of microorganisms to high Li concentrations in natural biological systems is limited. Strain LCHXa is a novel free-living Gram-positive, non-motile bacterium strain isolated from water samples taken at Laguna Chaxa, a non-industrial water body with the highest soluble Li content (33 mM LiCl) within the Salar de Atacama basin in northern Chile. Enrichment was conducted in Luria-Bertani (LB) medium supplemented with 1 M LiCl. Strain LCHXa was a Novobiocin-resistant and coagulase negative Staphylococcus. Phylogenetically, strain LCHXa belongs to the species Staphylococcussciuri. Strain LCHXa grew optimally in LB medium at pH 6-8 and 37 degrees C, and it was able to sustain growth at molar Li concentrations at 2 M LiCl, with a decrease in the specific growth rate of 85%. Osmoregulation in strain LCHXa partially involves glycine betaine and glycerol as compatible solutes.
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