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dc.contributor.author
Stepanenko, Tatiana Mariel
dc.contributor.author
Soria, Mariana Noelia
dc.contributor.author
Saona Acuña, Luis Alberto
dc.contributor.author
Lencina, Agustina Inés
dc.contributor.author
Farias, Maria Eugenia
dc.contributor.other
Farias, Maria Eugenia
dc.date.available
2022-05-20T10:31:19Z
dc.date.issued
2020
dc.identifier.citation
Stepanenko, Tatiana Mariel; Soria, Mariana Noelia; Saona Acuña, Luis Alberto; Lencina, Agustina Inés; Farias, Maria Eugenia; A Unique Natural Laboratory to Study Polyextremophile Microorganisms: Diamante Lake as a Window to the Origin of Life; Springer Nature Switzerland AG; 2020; 113-120
dc.identifier.isbn
978-3-030-36192-1
dc.identifier.uri
http://hdl.handle.net/11336/157893
dc.description.abstract
Diamante Lake is located at 4589 m above sea level (m a.s.l.) inside the Galán Volcano caldera and presents extreme environmental conditions, such as high arsenic concentration (210 mg l−1), salinity, pH and UV radiation. Until 2010, most studies in the area had largely overlooked the microbial biodiversity in Diamante Lake. With the advent of high throughput sequencing, it became possible to study the microbial communities of environmental samples using metagenomic approaches. In a recent work, we discovered red biofilms forming on the surface of sedimentary rocks on the bottom of the lake containing the rare mineral gaylussite. A metagenomic analysis of these biofilms revealed a predominance of haloarchaea (>96%) over other prokaryotic or eukaryotic organisms. To thrive under the extreme conditions in the lake, these biofilms use different metabolic and physiologic strategies: (1) to avoid the arsenic uptake into the cell, this is done through highly specific phosphate transporters (Pst) and consequently, (2) to take advantage bioenergetically of the high extracellular arsenic concentration and obtain energy from arsenite oxidation and to perform anaerobic respiration of arsenate. Contrary to what could be expected, the required enzymes for these arsenic metabolisms were likely not acquired recently by the selective pressure within Diamante Lake, but rather correspond to reminiscences of primitive metabolisms that could date back to even the origins of the haloarchaea lineage billions of years ago. Diamante Lake is a unique environment in the world and represents an open window to study the evolution of life on Earth and the adaptations required to survive under the extreme conditions that prevailed on the ancient Earth and that are currently found on other planets.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer Nature Switzerland AG
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
BIOFILMS
dc.subject
DIAMANTE LAKE
dc.subject
ARSENIC
dc.subject
HALOARCHAEA
dc.subject
EXTREME ENVIRONMENT
dc.subject.classification
Biología Celular, Microbiología
dc.subject.classification
Ciencias Biológicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
A Unique Natural Laboratory to Study Polyextremophile Microorganisms: Diamante Lake as a Window to the Origin of Life
dc.type
info:eu-repo/semantics/publishedVersion
dc.type
info:eu-repo/semantics/bookPart
dc.type
info:ar-repo/semantics/parte de libro
dc.date.updated
2022-05-17T17:01:03Z
dc.journal.pagination
113-120
dc.journal.pais
Suiza
dc.journal.ciudad
Cham
dc.description.fil
Fil: Stepanenko, Tatiana Mariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; Argentina
dc.description.fil
Fil: Soria, Mariana Noelia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; Argentina
dc.description.fil
Fil: Saona Acuña, Luis Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; Argentina
dc.description.fil
Fil: Lencina, Agustina Inés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; Argentina
dc.description.fil
Fil: Farias, Maria Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; Argentina
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1007/978-3-030-36192-1_8
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/chapter/10.1007/978-3-030-36192-1_8
dc.conicet.paginas
298
dc.source.titulo
Microbial Ecosystems in Central Andes Extreme Environments: Biofilms, Microbial Mats, Microbialites and Endoevaporites
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