Isolation and characterization of endosymbiotic bacteria from copper contaminated soils in Chile

Duran Wendt, David Ricardo; Soto, C.; Rubio Sanz, Laura; Cabrera Ordoñez, Ezequiel; Prieto Carbajo, Rosa Isabel; Palacios Alberti, Jose Manuel; Baginsky, C. y Brito Lopez, Maria Belen (2010). Isolation and characterization of endosymbiotic bacteria from copper contaminated soils in Chile. En: "XIII National Meeting of the Spanish Society of Nitrogen Fixation. II Portuguese-Spanish Congress on Nitrogen Fixation", 15/06/2011 - 18/06/2011, Zaragoza, España.

Descripción

Título: Isolation and characterization of endosymbiotic bacteria from copper contaminated soils in Chile
Autor/es:
  • Duran Wendt, David Ricardo
  • Soto, C.
  • Rubio Sanz, Laura
  • Cabrera Ordoñez, Ezequiel
  • Prieto Carbajo, Rosa Isabel
  • Palacios Alberti, Jose Manuel
  • Baginsky, C.
  • Brito Lopez, Maria Belen
Tipo de Documento: Ponencia en Congreso o Jornada (Póster)
Título del Evento: XIII National Meeting of the Spanish Society of Nitrogen Fixation. II Portuguese-Spanish Congress on Nitrogen Fixation
Fechas del Evento: 15/06/2011 - 18/06/2011
Lugar del Evento: Zaragoza, España
Título del Libro: Biological Nitrogen Fixation and Plant-Associated Microorganisms
Fecha: 2010
Materias:
Escuela: E.T.S.I. Agrónomos (UPM) [antigua denominación]
Departamento: Biotecnologia [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

Legume endosymbiotic bacteria indigenous of copper (Cu)-contaminated soils from Chile have been isolated using pea (Pisum sativum), bean (Phaseolus vulgaris) and alfalfa (Medicago sativa) as trap host plants. Highly contaminated soils only produced nodules in certain legume hosts, whereas nodulation was observed in the three legume hosts when inoculated with soils containing a low Cu concentration. A collection of 362 strains was isolated, and their levels of Cu resistance were tested in media supplemented with increasing metal concentrations and in disk diffusion assays. By these two approaches, 84 strains displaying levels of Cu resistance higher than those exhibited by the corresponding reference strains were selected. The most resistant strains isolated from alfalfa and bean nodules grew normally at 3 mM and 2.5 mM CuSO4 and were obtained from two different highly contaminated soils. Strains nodulating pea plants showed similar levels of resistance to Cu (2-2.5 mM CuSO4) and were isolated from low-contaminated soils. Our data suggest a reduction of microbial diversity in agricultural Cu-contaminated soils from Chile

Más información

ID de Registro: 9021
Identificador DC: http://oa.upm.es/9021/
Identificador OAI: oai:oa.upm.es:9021
Depositado por: Memoria Investigacion
Depositado el: 05 Oct 2011 08:12
Ultima Modificación: 20 Abr 2016 17:36
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