Archaea Isolates from five hypersaline environments in Argentinean Puna
- Autores
- Maldonado, Marcos Javier; Farias, Maria Eugenia
- Año de publicación
- 2012
- Idioma
- español castellano
- Tipo de recurso
- documento de conferencia
- Estado
- versión publicada
- Descripción
- The objective of this study was isolate and study halophilic archaea in five hypersaline environments from the Argentinean Puna. Puna is a unique natural area covering northern Chile, western Bolivia, central and southern Peru and north-western Argentina (NOA). These environments are characterized by extreme conditions where salt concentration is very high, near saturation (up to 4 M or 25%), low oxygen tension, large daily air temperature fluctuations, ranging from 20°C during the day to −40°C at night, high UV incidence, high arsenic concentrations and oligotrophy. There is not much information about halophilic archaea in Argentina. The water samples were collected from five different wetlands: Antofalla lake (Catamarca), Socompa lake (Salta), Tolar Grande “Sea eye” (Salta), Pocitos salt flat (Salta) and Llullaillaco salt flat (Salta). These lakes are located above 3500 masl. The samples were cultivated in 6 ws medium for 7 days at 37ºC. 32 strains were isolates. The isolates corresponded to genera Halorubrum, Haloarcula and Halomicrobium. Pigments from the isolates were extracted with methanol. The identification of pigments was based on absorbance spectra. The absorbance was measured at wavelength range 200-800 nm. The most were carotenoids pigments with the highest absorption peak at 492 nm. Plasmid DNA was isolated by using a modified method of Anderson and McKay and the QIAprep® Spin Miniprep Kit (QIAGEN). Ten of the isolates contain plasmids with sizes ranging from 1.5 kb to 5 kb approximately. The presence of plasmids in Archaea from hypersaline environments apparently is a widespread phenomenon. For UV resistance qualitative analysis were plated 5 ul of dilutions between 10-1 and 10-7 in drop form, on 1.5% agar (w/v). The plates were exposed 1 to 13 hours to UV – B light. Then the plates were incubated inverted for 7 days at 37 °C. All the strain had resistance to UV - B light.
Fil: Maldonado, Marcos Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; Argentina
Fil: Farias, Maria Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; Argentina
VIII Congreso Argentino de Microbiología General
Mar del Plata
Argentina
Sociedad Argentina de Microbiología General - Materia
-
ARCHAEA
ISOLATE
LAKES - 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:11336/263541
Ver los metadatos del registro completo
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Archaea Isolates from five hypersaline environments in Argentinean PunaMaldonado, Marcos JavierFarias, Maria EugeniaARCHAEAISOLATELAKEShttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1The objective of this study was isolate and study halophilic archaea in five hypersaline environments from the Argentinean Puna. Puna is a unique natural area covering northern Chile, western Bolivia, central and southern Peru and north-western Argentina (NOA). These environments are characterized by extreme conditions where salt concentration is very high, near saturation (up to 4 M or 25%), low oxygen tension, large daily air temperature fluctuations, ranging from 20°C during the day to −40°C at night, high UV incidence, high arsenic concentrations and oligotrophy. There is not much information about halophilic archaea in Argentina. The water samples were collected from five different wetlands: Antofalla lake (Catamarca), Socompa lake (Salta), Tolar Grande “Sea eye” (Salta), Pocitos salt flat (Salta) and Llullaillaco salt flat (Salta). These lakes are located above 3500 masl. The samples were cultivated in 6 ws medium for 7 days at 37ºC. 32 strains were isolates. The isolates corresponded to genera Halorubrum, Haloarcula and Halomicrobium. Pigments from the isolates were extracted with methanol. The identification of pigments was based on absorbance spectra. The absorbance was measured at wavelength range 200-800 nm. The most were carotenoids pigments with the highest absorption peak at 492 nm. Plasmid DNA was isolated by using a modified method of Anderson and McKay and the QIAprep® Spin Miniprep Kit (QIAGEN). Ten of the isolates contain plasmids with sizes ranging from 1.5 kb to 5 kb approximately. The presence of plasmids in Archaea from hypersaline environments apparently is a widespread phenomenon. For UV resistance qualitative analysis were plated 5 ul of dilutions between 10-1 and 10-7 in drop form, on 1.5% agar (w/v). The plates were exposed 1 to 13 hours to UV – B light. Then the plates were incubated inverted for 7 days at 37 °C. All the strain had resistance to UV - B light.Fil: Maldonado, Marcos Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; ArgentinaFil: Farias, Maria Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; ArgentinaVIII Congreso Argentino de Microbiología GeneralMar del PlataArgentinaSociedad Argentina de Microbiología GeneralSociedad Argentina de Microbiología General2012info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectCongresoBookhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/263541Archaea Isolates from five hypersaline environments in Argentinean Puna; VIII Congreso Argentino de Microbiología General; Mar del Plata; Argentina; 2012; 140-140CONICET DigitalCONICETspainfo:eu-repo/semantics/altIdentifier/url/https://samige.org.ar/congresos-anteriores/Internacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:48:10Zoai:ri.conicet.gov.ar:11336/263541instacron: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 09:48:10.95CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Archaea Isolates from five hypersaline environments in Argentinean Puna |
title |
Archaea Isolates from five hypersaline environments in Argentinean Puna |
spellingShingle |
Archaea Isolates from five hypersaline environments in Argentinean Puna Maldonado, Marcos Javier ARCHAEA ISOLATE LAKES |
title_short |
Archaea Isolates from five hypersaline environments in Argentinean Puna |
title_full |
Archaea Isolates from five hypersaline environments in Argentinean Puna |
title_fullStr |
Archaea Isolates from five hypersaline environments in Argentinean Puna |
title_full_unstemmed |
Archaea Isolates from five hypersaline environments in Argentinean Puna |
title_sort |
Archaea Isolates from five hypersaline environments in Argentinean Puna |
dc.creator.none.fl_str_mv |
Maldonado, Marcos Javier Farias, Maria Eugenia |
author |
Maldonado, Marcos Javier |
author_facet |
Maldonado, Marcos Javier Farias, Maria Eugenia |
author_role |
author |
author2 |
Farias, Maria Eugenia |
author2_role |
author |
dc.subject.none.fl_str_mv |
ARCHAEA ISOLATE LAKES |
topic |
ARCHAEA ISOLATE LAKES |
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 objective of this study was isolate and study halophilic archaea in five hypersaline environments from the Argentinean Puna. Puna is a unique natural area covering northern Chile, western Bolivia, central and southern Peru and north-western Argentina (NOA). These environments are characterized by extreme conditions where salt concentration is very high, near saturation (up to 4 M or 25%), low oxygen tension, large daily air temperature fluctuations, ranging from 20°C during the day to −40°C at night, high UV incidence, high arsenic concentrations and oligotrophy. There is not much information about halophilic archaea in Argentina. The water samples were collected from five different wetlands: Antofalla lake (Catamarca), Socompa lake (Salta), Tolar Grande “Sea eye” (Salta), Pocitos salt flat (Salta) and Llullaillaco salt flat (Salta). These lakes are located above 3500 masl. The samples were cultivated in 6 ws medium for 7 days at 37ºC. 32 strains were isolates. The isolates corresponded to genera Halorubrum, Haloarcula and Halomicrobium. Pigments from the isolates were extracted with methanol. The identification of pigments was based on absorbance spectra. The absorbance was measured at wavelength range 200-800 nm. The most were carotenoids pigments with the highest absorption peak at 492 nm. Plasmid DNA was isolated by using a modified method of Anderson and McKay and the QIAprep® Spin Miniprep Kit (QIAGEN). Ten of the isolates contain plasmids with sizes ranging from 1.5 kb to 5 kb approximately. The presence of plasmids in Archaea from hypersaline environments apparently is a widespread phenomenon. For UV resistance qualitative analysis were plated 5 ul of dilutions between 10-1 and 10-7 in drop form, on 1.5% agar (w/v). The plates were exposed 1 to 13 hours to UV – B light. Then the plates were incubated inverted for 7 days at 37 °C. All the strain had resistance to UV - B light. Fil: Maldonado, Marcos Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; Argentina Fil: Farias, Maria Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; Argentina VIII Congreso Argentino de Microbiología General Mar del Plata Argentina Sociedad Argentina de Microbiología General |
description |
The objective of this study was isolate and study halophilic archaea in five hypersaline environments from the Argentinean Puna. Puna is a unique natural area covering northern Chile, western Bolivia, central and southern Peru and north-western Argentina (NOA). These environments are characterized by extreme conditions where salt concentration is very high, near saturation (up to 4 M or 25%), low oxygen tension, large daily air temperature fluctuations, ranging from 20°C during the day to −40°C at night, high UV incidence, high arsenic concentrations and oligotrophy. There is not much information about halophilic archaea in Argentina. The water samples were collected from five different wetlands: Antofalla lake (Catamarca), Socompa lake (Salta), Tolar Grande “Sea eye” (Salta), Pocitos salt flat (Salta) and Llullaillaco salt flat (Salta). These lakes are located above 3500 masl. The samples were cultivated in 6 ws medium for 7 days at 37ºC. 32 strains were isolates. The isolates corresponded to genera Halorubrum, Haloarcula and Halomicrobium. Pigments from the isolates were extracted with methanol. The identification of pigments was based on absorbance spectra. The absorbance was measured at wavelength range 200-800 nm. The most were carotenoids pigments with the highest absorption peak at 492 nm. Plasmid DNA was isolated by using a modified method of Anderson and McKay and the QIAprep® Spin Miniprep Kit (QIAGEN). Ten of the isolates contain plasmids with sizes ranging from 1.5 kb to 5 kb approximately. The presence of plasmids in Archaea from hypersaline environments apparently is a widespread phenomenon. For UV resistance qualitative analysis were plated 5 ul of dilutions between 10-1 and 10-7 in drop form, on 1.5% agar (w/v). The plates were exposed 1 to 13 hours to UV – B light. Then the plates were incubated inverted for 7 days at 37 °C. All the strain had resistance to UV - B light. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012 |
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info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/conferenceObject Congreso Book http://purl.org/coar/resource_type/c_5794 info:ar-repo/semantics/documentoDeConferencia |
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publishedVersion |
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conferenceObject |
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http://hdl.handle.net/11336/263541 Archaea Isolates from five hypersaline environments in Argentinean Puna; VIII Congreso Argentino de Microbiología General; Mar del Plata; Argentina; 2012; 140-140 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/263541 |
identifier_str_mv |
Archaea Isolates from five hypersaline environments in Argentinean Puna; VIII Congreso Argentino de Microbiología General; Mar del Plata; Argentina; 2012; 140-140 CONICET Digital CONICET |
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info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
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Internacional |
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Sociedad Argentina de Microbiología General |
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Sociedad Argentina de Microbiología General |
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