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Open AccessArticle

Staphylococcus sciuri Strain LCHXa is a Free-Living Lithium-Tolerant Bacterium Isolated from Salar de Atacama, Chile

1
Laboratorio de Bioquímica, Departamento Biomédico, and Centre for Biotechnology and Bioengineering, CeBiB, Universidad de Antofagasta, Antofagasta 1270300, Chile
2
Laboratorio de Parasitología y Biología Molecular, and Centre for Biotechnology and Bioengineering, CeBiB, Universidad de Antofagasta, Antofagasta 1270300, Chile
*
Author to whom correspondence should be addressed.
Microorganisms 2020, 8(5), 668; https://doi.org/10.3390/microorganisms8050668
Received: 24 January 2020 / Revised: 26 February 2020 / Accepted: 28 February 2020 / Published: 5 May 2020
(This article belongs to the Special Issue Microbial Diversity in Extreme Environments)
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 Staphylococcus sciuri. Strain LCHXa grew optimally in LB medium at pH 6–8 and 37 °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. View Full-Text
Keywords: antibiotic susceptibility; Atacama Desert; Laguna Chaxa; lithium tolerance; Novobiocin resistance; osmoregulation; Staphylococcus sciuri; Salar de Atacama antibiotic susceptibility; Atacama Desert; Laguna Chaxa; lithium tolerance; Novobiocin resistance; osmoregulation; Staphylococcus sciuri; Salar de Atacama
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Salazar-Ardiles, C.; Caimanque, T.; Galetović, A.; Vilo, C.; Araya, J.E.; Flores, N.; Gómez-Silva, B. Staphylococcus sciuri Strain LCHXa is a Free-Living Lithium-Tolerant Bacterium Isolated from Salar de Atacama, Chile. Microorganisms 2020, 8, 668.

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