Salar del Hombre Muerto, source of lithium-tolerant bacteria
The Salar del Hombre Muerto is a flat salt with great microbial activity despite the existing extreme conditions like high altitude, lack of water, low level of oxygen, high radiation and high concentration of sodium and lithium chloride. Despite these unfavorable conditions, we found microbial dive...
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sg-ntu-dr.10356-1425082020-06-23T04:02:17Z Salar del Hombre Muerto, source of lithium-tolerant bacteria Martínez, Fabiana Lilian Orce, Ingrid Georgina Rajal, Verónica Beatriz Irazusta, Verónica Patricia School of Biological Sciences Singapore Centre for Environmental Life Sciences and Engineering Science::Biological sciences Hypersaline Environments Lithium The Salar del Hombre Muerto is a flat salt with great microbial activity despite the existing extreme conditions like high altitude, lack of water, low level of oxygen, high radiation and high concentration of sodium and lithium chloride. Despite these unfavorable conditions, we found microbial diversity with the presence of fungi, algae, and bacteria. From aqueous solutions and soil samples, a total of 238 bacteria were isolated and 186 of them were able to grow in the presence of salt. About 30% of the strains showed the ability to grow in solid medium proximally to a LiCl solution close to saturation (636 g/L). These isolates were characterized taking into account the morphology, Gram stain, ability to form biofilms and to produce pigments, and mainly according to the tolerance against lithium chloride. Bacillus was predominant among the most tolerant 26 microorganisms found, followed by Micrococcus and Brevibacterium. Members of the genera Kocuria, Curtobacterium and Halomonas were also represented among the bacteria with tolerance to 30 and 60 g/L of LiCl in defined liquid medium. All the capacities found in these microorganisms make them extremely interesting for biotechnological applications. 2020-06-23T04:02:17Z 2020-06-23T04:02:17Z 2019 Journal Article Martínez, F. L., Orce, I. G., Rajal, V. B., & Irazusta, V. P. (2019). Salar del Hombre Muerto, source of lithium-tolerant bacteria. Environmental geochemistry and health, 41(2), 529–543. doi:10.1007/s10653-018-0148-2 0269-4042 https://hdl.handle.net/10356/142508 10.1007/s10653-018-0148-2 29995192 2-s2.0-85049679984 2 41 529 543 en Environmental geochemistry and health © 2018 Springer Nature B.V. All rights reserved. |
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The Salar del Hombre Muerto is a flat salt with great microbial activity despite the existing extreme conditions like high altitude, lack of water, low level of oxygen, high radiation and high concentration of sodium and lithium chloride. Despite these unfavorable conditions, we found microbial diversity with the presence of fungi, algae, and bacteria. From aqueous solutions and soil samples, a total of 238 bacteria were isolated and 186 of them were able to grow in the presence of salt. About 30% of the strains showed the ability to grow in solid medium proximally to a LiCl solution close to saturation (636 g/L). These isolates were characterized taking into account the morphology, Gram stain, ability to form biofilms and to produce pigments, and mainly according to the tolerance against lithium chloride. Bacillus was predominant among the most tolerant 26 microorganisms found, followed by Micrococcus and Brevibacterium. Members of the genera Kocuria, Curtobacterium and Halomonas were also represented among the bacteria with tolerance to 30 and 60 g/L of LiCl in defined liquid medium. All the capacities found in these microorganisms make them extremely interesting for biotechnological applications. |
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School of Biological Sciences |
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School of Biological Sciences Martínez, Fabiana Lilian Orce, Ingrid Georgina Rajal, Verónica Beatriz Irazusta, Verónica Patricia |
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Article |
author |
Martínez, Fabiana Lilian Orce, Ingrid Georgina Rajal, Verónica Beatriz Irazusta, Verónica Patricia |
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Martínez, Fabiana Lilian |
title |
Salar del Hombre Muerto, source of lithium-tolerant bacteria |
title_short |
Salar del Hombre Muerto, source of lithium-tolerant bacteria |
title_full |
Salar del Hombre Muerto, source of lithium-tolerant bacteria |
title_fullStr |
Salar del Hombre Muerto, source of lithium-tolerant bacteria |
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Salar del Hombre Muerto, source of lithium-tolerant bacteria |
title_sort |
salar del hombre muerto, source of lithium-tolerant bacteria |
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2020 |
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https://hdl.handle.net/10356/142508 |
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1681057573117100032 |