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dc.contributor.author
Amar, Agustina
dc.contributor.author
Castro, Camila Andrea
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Bernardelli, Cecilia Elena
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Costa, Cristina Susana
dc.contributor.author
Donati, Edgardo Ruben
dc.date.available
2022-10-18T01:12:14Z
dc.date.issued
2021-05
dc.identifier.citation
Amar, Agustina; Castro, Camila Andrea; Bernardelli, Cecilia Elena; Costa, Cristina Susana; Donati, Edgardo Ruben; Influence of UVA radiation on growth, biofilm formation and bioleaching capacity of Leptospirillum ferrooxidans; Elsevier Science; Hydrometallurgy (Amsterdam); 201; 105574; 5-2021; 1-13
dc.identifier.issn
0304-386X
dc.identifier.uri
http://hdl.handle.net/11336/173635
dc.description.abstract
Ultraviolet-A (UVA) radiation is one of the most stressful oxidative agents that bacteria have to face in natural environments. The effect of this radiation on growth, survival, biofilm formation, and bioleaching activity of two Leptospirillum ferrooxidans strains was studied, comparing the collection strain DSM2705 with FAM-RA2, a strain recently isolated from Famatina (La Rioja, Argentina), at 3869 m above sea level (ma.s.l.). We demonstrated that the isolate FAM-RA2 was more UVA resistant than the collection strain DSM2705 in kinetic growth and biofilm formation assays. However, both strains presented a similar behavior in their bioleaching capacity. Higher levels of intracellular reactive oxygen species (ROS) after UVA exposure were detected in DSM2705 strain, suggesting the presence of stronger defensive mechanisms against oxidative stress in FAM-RA2 strain. Assays of biofilm formation showed that UVA radiation induced cell adhesion and extracellular polymeric substance (EPS) production in the collection strain DSM2705, but not in the FAM-RA2 strain. The ability of UVA radiation to increase biofilm formation in DSM2705 led us to suppose that this agent could promote its bioleaching activity; however, under these studied conditions, this stress agent did not enhance metal sulfide dissolution. This study provides first insights into the effects of UVA radiation on the physiological features of acidophilic microorganisms.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
BIOFILM
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BIOLEACHING
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LEPTOSPIRILLUM
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OXIDATIVE STRESS
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UVA RADIATION
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Biotecnología Medioambiental
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Biotecnología del Medio Ambiente
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INGENIERÍAS Y TECNOLOGÍAS
dc.title
Influence of UVA radiation on growth, biofilm formation and bioleaching capacity of Leptospirillum ferrooxidans
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2022-05-06T15:55:32Z
dc.journal.volume
201
dc.journal.number
105574
dc.journal.pagination
1-13
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Amar, Agustina. Comisión Nacional de Energía Atómica; Argentina
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Fil: Castro, Camila Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Fermentaciones Industriales. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Fermentaciones Industriales; Argentina
dc.description.fil
Fil: Bernardelli, Cecilia Elena. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Fermentaciones Industriales. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Fermentaciones Industriales; Argentina
dc.description.fil
Fil: Costa, Cristina Susana. Comisión Nacional de Energía Atómica; Argentina
dc.description.fil
Fil: Donati, Edgardo Ruben. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Fermentaciones Industriales. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Fermentaciones Industriales; Argentina
dc.journal.title
Hydrometallurgy (Amsterdam)
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0304386X21000232
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.hydromet.2021.105574
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