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dc.contributor.author
Di Capua, Cecilia Beatriz
dc.contributor.author
Bortolotti, Ana
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Farias, Maria Eugenia
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Cortez, Nestor Ricardo
dc.date.available
2018-03-05T19:24:43Z
dc.date.issued
2011-04
dc.identifier.citation
Di Capua, Cecilia Beatriz; Bortolotti, Ana; Farias, Maria Eugenia; Cortez, Nestor Ricardo; UV-resistant Acinetobacter sp. isolates from Andean wetlands display high catalase activity; Wiley Blackwell Publishing, Inc; FEMS Microbiology Letters; 317; 2; 4-2011; 181-189
dc.identifier.issn
0378-1097
dc.identifier.uri
http://hdl.handle.net/11336/37868
dc.description.abstract
Andean wetlands are characterized by their extreme environmental conditions such as high UV radiation, elevated heavy metal content and salinity. We present here the first study on UV tolerance and antioxidant defense of four Acinetobacter strains: Ver3, Ver5 and Ver7, isolated from Lake Verde, and N40 from Lake Negra, both lakes located 4400m above sea level. All four isolates displayed higher UV resistance compared with collection strains, with Ver3 and Ver7 being the most tolerant strains not only to UV radiation but also to hydrogen peroxide (H2O2) and methyl viologen (MV) challenges. A single superoxide dismutase band with similar activity was detected in all studied strains, whereas different electrophoretic pattern and activity levels were observed for catalase. Ver3 and Ver7 displayed 5-15 times higher catalase activity levels than the control strains. Analysis of the response of antioxidant enzymes to UV and oxidative challenges revealed a significant increase in Ver7 catalase activity after H2O2 and MV exposure. Incubation of Ver7 cultures with a catalase inhibitor resulted in a significant decrease of tolerance against UV radiation. We conclude that the high catalase activity displayed by Ver7 isolate could play an important role in UV tolerance.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley Blackwell Publishing, Inc
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Acinetobacter
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Andean Wetlands
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Catalase
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Oxidative Stress
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Superoxide Dismutase
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Uv Radiation
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Otras Ciencias Biológicas
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Ciencias Biológicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
UV-resistant Acinetobacter sp. isolates from Andean wetlands display high catalase activity
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-03-02T15:00:01Z
dc.journal.volume
317
dc.journal.number
2
dc.journal.pagination
181-189
dc.journal.pais
Reino Unido
dc.journal.ciudad
Londres
dc.description.fil
Fil: Di Capua, Cecilia Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Biología Molecular y Celular de Rosario. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Biología Molecular y Celular de Rosario; Argentina
dc.description.fil
Fil: Bortolotti, Ana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Biología Molecular y Celular de Rosario. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Biología Molecular y Celular de Rosario; Argentina
dc.description.fil
Fil: Farias, Maria Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucuman. Planta Piloto de Procesos Industriales Microbiologicos; Argentina
dc.description.fil
Fil: Cortez, Nestor Ricardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Biología Molecular y Celular de Rosario. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Biología Molecular y Celular de Rosario; Argentina
dc.journal.title
FEMS Microbiology Letters
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1111/j.1574-6968.2011.02231.x
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/femsle/article/317/2/181/623976
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1111/j.1574-6968.2011.02231.x/abstract


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  • Articulos(IBR) [353]
    Articulos de INST.DE BIOLOGIA MOLECULAR Y CELULAR DE ROSARIO
  • Articulos(PROIMI) [488]
    Articulos de PLANTA PILOTO DE PROC.IND.MICROBIOLOGICOS (I)

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