Mining for Perchlorate Resistance Genes in Microorganisms From Sediments of a Hypersaline Pond in Atacama Desert, Chile.
Atacama Desert
DNA repair
Mars
hypersaline environments
oxidative stress
perchlorate-resistance
protein damage
tRNA modification
Journal
Frontiers in microbiology
ISSN: 1664-302X
Titre abrégé: Front Microbiol
Pays: Switzerland
ID NLM: 101548977
Informations de publication
Date de publication:
2021
2021
Historique:
received:
11
06
2021
accepted:
18
06
2021
entrez:
9
8
2021
pubmed:
10
8
2021
medline:
10
8
2021
Statut:
epublish
Résumé
Perchlorate is an oxidative pollutant toxic to most of terrestrial life by promoting denaturation of macromolecules, oxidative stress, and DNA damage. However, several microorganisms, especially hyperhalophiles, are able to tolerate high levels of this compound. Furthermore, relatively high quantities of perchlorate salts were detected on the Martian surface, and due to its strong hygroscopicity and its ability to substantially decrease the freezing point of water, perchlorate is thought to increase the availability of liquid brine water in hyper-arid and cold environments, such as the Martian regolith. Therefore, perchlorate has been proposed as a compound worth studying to better understanding the habitability of the Martian surface. In the present work, to study the molecular mechanisms of perchlorate resistance, a functional metagenomic approach was used, and for that, a small-insert library was constructed with DNA isolated from microorganisms exposed to perchlorate in sediments of a hypersaline pond in the Atacama Desert, Chile (Salar de Maricunga), one of the regions with the highest levels of perchlorate on Earth. The metagenomic library was hosted in
Identifiants
pubmed: 34367123
doi: 10.3389/fmicb.2021.723874
pmc: PMC8343002
doi:
Types de publication
Journal Article
Langues
eng
Pagination
723874Informations de copyright
Copyright © 2021 Díaz-Rullo, Rodríguez-Valdecantos, Torres-Rojas, Cid, Vargas, González and González-Pastor.
Déclaration de conflit d'intérêts
The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
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