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dc.contributor.author
Villegas, Liliana Beatriz
dc.contributor.author
Amoroso, Maria Julia del R.
dc.contributor.author
Castellanos, Lucia Ines
dc.date.available
2018-04-24T20:41:05Z
dc.date.issued
2005-10
dc.identifier.citation
Villegas, Liliana Beatriz; Amoroso, Maria Julia del R.; Castellanos, Lucia Ines; Copper tolerant yeasts isolated from polluted area of Argentina; Wiley VCH Verlag; Journal of Basic Microbiology; 45; 5; 10-2005; 381-391
dc.identifier.issn
0233-111X
dc.identifier.uri
http://hdl.handle.net/11336/43373
dc.description.abstract
Eleven yeasts were isolated from wastewater sediment samples collected from a copper filter mine plant, located in the province of Tucumán, Argentina, and tested for their heavy metal tolerance. Two isolates were selected based on their multiple tolerance to different heavy metals and their copper biosorption capacity was studied. Analysis of the 26S rDNA D1/D2 domain sequences indicates that isolate RCL‐3 showed similarity with Candida sp. and RCL‐11 with Rhodotorula mucilaginosa . Growth performance and copper toxicity of both yeasts were evaluated using YNB‐glucose medium supplemented with 0.1, 0.2, 0.5 and 1 mM of Cu2+ solutions. Candida sp. RCL‐3 was able to grow up to 7 mg ml–1 biomass in the presence of either 0.1 or 0.2 mM Cu2+, and at 0.5 mM Cu2+ growth reached 5.5 mg ml–1. R. mucilaginosa RCL‐11 reached 8 mg ml–1 in the presence of 0.1 mM Cu2+, and values of 6.5 and 5.5 mg ml–1 biomass were obtained at 0.2 and 0.5 mM Cu2+, respectively. Copper accumulation profiles were different: the metal was librated from the intact cells by Candida sp. whereas R. mucilaginosa did not show release from the cells indicating intracellular storage. Specific biosorption of copper by both isolated yeasts showed increase with the initial copper supplied with the medium (up to 11.5 and 8.0 mg Cu g–1 biomass for Candida sp. and R. mucilaginosa , respectively). However, specific biosorption decreased with time.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley VCH Verlag
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Copper Removal
dc.subject
Yeasts
dc.subject.classification
Otras Ciencias Biológicas
dc.subject.classification
Ciencias Biológicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Copper tolerant yeasts isolated from polluted area of Argentina
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-04-18T17:51:59Z
dc.journal.volume
45
dc.journal.number
5
dc.journal.pagination
381-391
dc.journal.pais
Alemania
dc.journal.ciudad
Weinheim
dc.description.fil
Fil: Villegas, Liliana Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; Argentina
dc.description.fil
Fil: Amoroso, Maria Julia del R.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; Argentina
dc.description.fil
Fil: Castellanos, Lucia Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Planta Piloto de Procesos Industriales Microbiológicos; Argentina
dc.journal.title
Journal of Basic Microbiology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://dx.doi.org/10.1002/jobm.200510569
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1002/jobm.200510569


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