Metagenomics of Atacama Lithobiontic Extremophile Life Unveils Highlights on Fungal Communities, Biogeochemical Cycles and Carbohydrate-Active Enzymes

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dc.contributor.authorBenito Gómez-Silva
dc.contributor.authorClaudia Vilo-Muñoz
dc.contributor.authorAlexandra Galetović
dc.contributor.authorQunfeng Dong
dc.contributor.authorHugo G. Castelán Sánchez
dc.contributor.authorYordanis Pérez Llano
dc.contributor.authorMaría del Rayo Sánchez Carbente
dc.contributor.authorSonia Dávila Ramos
dc.contributor.authorNohemí Gabriela Cortés López
dc.contributor.authorLiliana Martínez Ávila
dc.contributor.authorAlan D. W. Dobson
dc.contributor.authorRamón Alberto Batista García
dc.date.accessioned2026-01-14T19:40:23Z
dc.date.available2026-01-14T19:40:23Z
dc.date.issued2019
dc.description.abstractHalites, which are typically found in various Atacama locations, are evaporitic rocks that are considered as micro-scaled salterns. Both structural and functional metagenomic analyses of halite nodules were performed. Structural analyses indicated that the halite microbiota is mainly composed of NaCl-adapted microorganisms. In addition, halites appear to harbor a limited diversity of fungal families together with a biodiverse collection of protozoa. Functional analysis indicated that the halite microbiome possesses the capacity to make an extensive contribution to carbon, nitrogen, and sulfur cycles, but possess a limited capacity to fix nitrogen. The halite metagenome also contains a vast repertory of carbohydrate active enzymes (CAZY) with glycosyl transferases being the most abundant class present, followed by glycosyl hydrolases (GH). Amylases were also present in high abundance, with GH also being identified. Thus, the halite microbiota is a potential useful source of novel enzymes that could have biotechnological applicability. This is the first metagenomic report of fungi and protozoa as endolithobionts of halite nodules, as well as the first attempt to describe the repertoire of CAZY in this community. In addition, we present a comprehensive functional metagenomic analysis of the metabolic capacities of the halite microbiota, providing evidence for the first time on the sulfur cycle in Atacama halites.
dc.description.sponsorshipProyecto Basal CONICYT-Chile CeBiB FB-0001 Universidad de Antofagasta SI-5305 CONACyT-Mexico. Project Number NIH-NCI P30 CA054174 (Cancer Center at UT Health San Antonio) NIH Shared Instrument grant 1S10OD021805-01 (S10 grant) CPRIT Core Facility Award Number RP160732 The Irish Department of Agriculture, Food and the Marine (DAFM) SMI-BIO project (15/F/698). CONACyT-Mexico (Projects No. 299091 and 285816)
dc.identifier.doi10.3390/microorganisms7120619
dc.identifier.issn20762607
dc.identifier.urihttps://repositorioabierto.uantof.cl/handle/uantof/612
dc.language.isoen
dc.rightsAttribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.sourceMicroorganisms
dc.titleMetagenomics of Atacama Lithobiontic Extremophile Life Unveils Highlights on Fungal Communities, Biogeochemical Cycles and Carbohydrate-Active Enzymes
dc.typeArticle
oaire.citation.volume7
organization.identifier.rorUniversidad de Antofagasta
uantof.identificator.facultyFacultad de Ciencias de la Salud
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