Investigating microbial diversity and UV radiation impact at the high-altitude lake Aguas Calientes, Chile
- Autores
- Escudero, Lorena; Chong, Guillermo; Demergasso, Cecilia; Farias, Maria Eugenia; Cabrol, Nathalie A.; Grin, Edmond; Minkley Jr., Edwin; Yu, Youngeob
- Año de publicación
- 2007
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The High-Lakes Project is funded by the NAI and explores the highest perennial volcanic lakes on Earth in the Bolivian and Chilean Andes, including several lakes ∼6,000 m elevation. These lakes represent an opportunity to study the evolution of microbial organisms in relatively shallow waters not providing substantial protection against UV radiation. Aguas Calientes (5,870 m) was investigated (November 2006) and samples of water and sediment collected at 1, 3, 5, and 10 cm depth. An Eldonet UV dosimeter positioned on the shore records UV radiation and temperature, and is logging data year round. A UV SolarLight sensor allowed acquisition of point measurements in all channels at the time of the sampling. UVA, UVB, and PAR peaks between 11:00 am and 1:00 pm reached 7.7 mW/cm2, 48.5 μW/cm2, and 511 W/m 2, respectively. The chemical composition of the water sample was analyzed. DNA was extracted and DGGE analyses with bacterial and archaeal 16S fragments were performed to describe microbial diversity. Antibiotic resistances were established previously in similar environments in Argentine Andean wetlands. In order to determine these resistances in our samples, they were inoculated onto LB and R2A media and onto R2A medium containing either chloramphenicol, ampicillin or tetracycline. Bacterial was higher than archeal cell number determined by RT-PCR in all the samples, reaching maximum total values of 5×105 cell mL-1. DGGE results from these samples and Licancabur summit lake (5,916 m) samples were also compared. Eight antibiotic-resistant Gram negative strains have been isolated with distinct resistance patterns.
Fil: Escudero, Lorena. Centro de Investigación Científica y Tecnológica para la Minería; Argentina
Fil: Chong, Guillermo. Centro de Investigación Científica y Tecnológica para la Minería; Argentina
Fil: Demergasso, Cecilia. Universidad Católica de Chile; Chile
Fil: Farias, Maria Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; Argentina
Fil: Cabrol, Nathalie A.. Nasa Ames Research Center; Estados Unidos
Fil: Grin, Edmond. Nasa Ames Research Center; Estados Unidos
Fil: Minkley Jr., Edwin. University of Carnegie Mellon; Estados Unidos
Fil: Yu, Youngeob. University of Carnegie Mellon; Estados Unidos - Materia
-
ANTIBIOTIC RESISTANCE
HIGH ALTITUDE LAKES
MICROBIAL DIVERSITY
UV RESISTANCE - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/92123
Ver los metadatos del registro completo
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CONICET Digital (CONICET) |
spelling |
Investigating microbial diversity and UV radiation impact at the high-altitude lake Aguas Calientes, ChileEscudero, LorenaChong, GuillermoDemergasso, CeciliaFarias, Maria EugeniaCabrol, Nathalie A.Grin, EdmondMinkley Jr., EdwinYu, YoungeobANTIBIOTIC RESISTANCEHIGH ALTITUDE LAKESMICROBIAL DIVERSITYUV RESISTANCEhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1The High-Lakes Project is funded by the NAI and explores the highest perennial volcanic lakes on Earth in the Bolivian and Chilean Andes, including several lakes ∼6,000 m elevation. These lakes represent an opportunity to study the evolution of microbial organisms in relatively shallow waters not providing substantial protection against UV radiation. Aguas Calientes (5,870 m) was investigated (November 2006) and samples of water and sediment collected at 1, 3, 5, and 10 cm depth. An Eldonet UV dosimeter positioned on the shore records UV radiation and temperature, and is logging data year round. A UV SolarLight sensor allowed acquisition of point measurements in all channels at the time of the sampling. UVA, UVB, and PAR peaks between 11:00 am and 1:00 pm reached 7.7 mW/cm2, 48.5 μW/cm2, and 511 W/m 2, respectively. The chemical composition of the water sample was analyzed. DNA was extracted and DGGE analyses with bacterial and archaeal 16S fragments were performed to describe microbial diversity. Antibiotic resistances were established previously in similar environments in Argentine Andean wetlands. In order to determine these resistances in our samples, they were inoculated onto LB and R2A media and onto R2A medium containing either chloramphenicol, ampicillin or tetracycline. Bacterial was higher than archeal cell number determined by RT-PCR in all the samples, reaching maximum total values of 5×105 cell mL-1. DGGE results from these samples and Licancabur summit lake (5,916 m) samples were also compared. Eight antibiotic-resistant Gram negative strains have been isolated with distinct resistance patterns.Fil: Escudero, Lorena. Centro de Investigación Científica y Tecnológica para la Minería; ArgentinaFil: Chong, Guillermo. Centro de Investigación Científica y Tecnológica para la Minería; ArgentinaFil: Demergasso, Cecilia. Universidad Católica de Chile; ChileFil: Farias, Maria Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; ArgentinaFil: Cabrol, Nathalie A.. Nasa Ames Research Center; Estados UnidosFil: Grin, Edmond. Nasa Ames Research Center; Estados UnidosFil: Minkley Jr., Edwin. University of Carnegie Mellon; Estados UnidosFil: Yu, Youngeob. University of Carnegie Mellon; Estados UnidosSPIE2007-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/92123Escudero, Lorena; Chong, Guillermo; Demergasso, Cecilia; Farias, Maria Eugenia; Cabrol, Nathalie A.; et al.; Investigating microbial diversity and UV radiation impact at the high-altitude lake Aguas Calientes, Chile; SPIE; Spie; 6694; 12-20070277-786XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://spie.org/x648.xml?product_id=736970&origin_id=x1636&Search_Results_URL=http://spie.org/x1636.xml&Search_Origin=ResearchSearch&category=ResearchPapers&isResearch=true&UseJavascript=1&Please_Wait_URL=http://spie.org/x18503.xml&title=Investigating%20Minfo:eu-repo/semantics/altIdentifier/doi/10.1117/12.736970info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:55:36Zoai:ri.conicet.gov.ar:11336/92123instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:55:37.047CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Investigating microbial diversity and UV radiation impact at the high-altitude lake Aguas Calientes, Chile |
title |
Investigating microbial diversity and UV radiation impact at the high-altitude lake Aguas Calientes, Chile |
spellingShingle |
Investigating microbial diversity and UV radiation impact at the high-altitude lake Aguas Calientes, Chile Escudero, Lorena ANTIBIOTIC RESISTANCE HIGH ALTITUDE LAKES MICROBIAL DIVERSITY UV RESISTANCE |
title_short |
Investigating microbial diversity and UV radiation impact at the high-altitude lake Aguas Calientes, Chile |
title_full |
Investigating microbial diversity and UV radiation impact at the high-altitude lake Aguas Calientes, Chile |
title_fullStr |
Investigating microbial diversity and UV radiation impact at the high-altitude lake Aguas Calientes, Chile |
title_full_unstemmed |
Investigating microbial diversity and UV radiation impact at the high-altitude lake Aguas Calientes, Chile |
title_sort |
Investigating microbial diversity and UV radiation impact at the high-altitude lake Aguas Calientes, Chile |
dc.creator.none.fl_str_mv |
Escudero, Lorena Chong, Guillermo Demergasso, Cecilia Farias, Maria Eugenia Cabrol, Nathalie A. Grin, Edmond Minkley Jr., Edwin Yu, Youngeob |
author |
Escudero, Lorena |
author_facet |
Escudero, Lorena Chong, Guillermo Demergasso, Cecilia Farias, Maria Eugenia Cabrol, Nathalie A. Grin, Edmond Minkley Jr., Edwin Yu, Youngeob |
author_role |
author |
author2 |
Chong, Guillermo Demergasso, Cecilia Farias, Maria Eugenia Cabrol, Nathalie A. Grin, Edmond Minkley Jr., Edwin Yu, Youngeob |
author2_role |
author author author author author author author |
dc.subject.none.fl_str_mv |
ANTIBIOTIC RESISTANCE HIGH ALTITUDE LAKES MICROBIAL DIVERSITY UV RESISTANCE |
topic |
ANTIBIOTIC RESISTANCE HIGH ALTITUDE LAKES MICROBIAL DIVERSITY UV RESISTANCE |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
The High-Lakes Project is funded by the NAI and explores the highest perennial volcanic lakes on Earth in the Bolivian and Chilean Andes, including several lakes ∼6,000 m elevation. These lakes represent an opportunity to study the evolution of microbial organisms in relatively shallow waters not providing substantial protection against UV radiation. Aguas Calientes (5,870 m) was investigated (November 2006) and samples of water and sediment collected at 1, 3, 5, and 10 cm depth. An Eldonet UV dosimeter positioned on the shore records UV radiation and temperature, and is logging data year round. A UV SolarLight sensor allowed acquisition of point measurements in all channels at the time of the sampling. UVA, UVB, and PAR peaks between 11:00 am and 1:00 pm reached 7.7 mW/cm2, 48.5 μW/cm2, and 511 W/m 2, respectively. The chemical composition of the water sample was analyzed. DNA was extracted and DGGE analyses with bacterial and archaeal 16S fragments were performed to describe microbial diversity. Antibiotic resistances were established previously in similar environments in Argentine Andean wetlands. In order to determine these resistances in our samples, they were inoculated onto LB and R2A media and onto R2A medium containing either chloramphenicol, ampicillin or tetracycline. Bacterial was higher than archeal cell number determined by RT-PCR in all the samples, reaching maximum total values of 5×105 cell mL-1. DGGE results from these samples and Licancabur summit lake (5,916 m) samples were also compared. Eight antibiotic-resistant Gram negative strains have been isolated with distinct resistance patterns. Fil: Escudero, Lorena. Centro de Investigación Científica y Tecnológica para la Minería; Argentina Fil: Chong, Guillermo. Centro de Investigación Científica y Tecnológica para la Minería; Argentina Fil: Demergasso, Cecilia. Universidad Católica de Chile; Chile Fil: Farias, Maria Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; Argentina Fil: Cabrol, Nathalie A.. Nasa Ames Research Center; Estados Unidos Fil: Grin, Edmond. Nasa Ames Research Center; Estados Unidos Fil: Minkley Jr., Edwin. University of Carnegie Mellon; Estados Unidos Fil: Yu, Youngeob. University of Carnegie Mellon; Estados Unidos |
description |
The High-Lakes Project is funded by the NAI and explores the highest perennial volcanic lakes on Earth in the Bolivian and Chilean Andes, including several lakes ∼6,000 m elevation. These lakes represent an opportunity to study the evolution of microbial organisms in relatively shallow waters not providing substantial protection against UV radiation. Aguas Calientes (5,870 m) was investigated (November 2006) and samples of water and sediment collected at 1, 3, 5, and 10 cm depth. An Eldonet UV dosimeter positioned on the shore records UV radiation and temperature, and is logging data year round. A UV SolarLight sensor allowed acquisition of point measurements in all channels at the time of the sampling. UVA, UVB, and PAR peaks between 11:00 am and 1:00 pm reached 7.7 mW/cm2, 48.5 μW/cm2, and 511 W/m 2, respectively. The chemical composition of the water sample was analyzed. DNA was extracted and DGGE analyses with bacterial and archaeal 16S fragments were performed to describe microbial diversity. Antibiotic resistances were established previously in similar environments in Argentine Andean wetlands. In order to determine these resistances in our samples, they were inoculated onto LB and R2A media and onto R2A medium containing either chloramphenicol, ampicillin or tetracycline. Bacterial was higher than archeal cell number determined by RT-PCR in all the samples, reaching maximum total values of 5×105 cell mL-1. DGGE results from these samples and Licancabur summit lake (5,916 m) samples were also compared. Eight antibiotic-resistant Gram negative strains have been isolated with distinct resistance patterns. |
publishDate |
2007 |
dc.date.none.fl_str_mv |
2007-12 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/92123 Escudero, Lorena; Chong, Guillermo; Demergasso, Cecilia; Farias, Maria Eugenia; Cabrol, Nathalie A.; et al.; Investigating microbial diversity and UV radiation impact at the high-altitude lake Aguas Calientes, Chile; SPIE; Spie; 6694; 12-2007 0277-786X CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/92123 |
identifier_str_mv |
Escudero, Lorena; Chong, Guillermo; Demergasso, Cecilia; Farias, Maria Eugenia; Cabrol, Nathalie A.; et al.; Investigating microbial diversity and UV radiation impact at the high-altitude lake Aguas Calientes, Chile; SPIE; Spie; 6694; 12-2007 0277-786X CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/http://spie.org/x648.xml?product_id=736970&origin_id=x1636&Search_Results_URL=http://spie.org/x1636.xml&Search_Origin=ResearchSearch&category=ResearchPapers&isResearch=true&UseJavascript=1&Please_Wait_URL=http://spie.org/x18503.xml&title=Investigating%20M info:eu-repo/semantics/altIdentifier/doi/10.1117/12.736970 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
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application/pdf application/pdf |
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SPIE |
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CONICET Digital (CONICET) |
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Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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13.070432 |