Heavy metal ion influence on the photosynthetic growth of Rhodobacter sphaeroides (Articolo in rivista)

Type
Label
  • Heavy metal ion influence on the photosynthetic growth of Rhodobacter sphaeroides (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Alternative label
  • L. Giotta, F. Italiano, F. Milano, A. Agostiano and M. Trotta (2006)
    Heavy metal ion influence on the photosynthetic growth of Rhodobacter sphaeroides
    in Chemosphere
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • L. Giotta, F. Italiano, F. Milano, A. Agostiano and M. Trotta (literal)
Pagina inizio
  • 1490 (literal)
Pagina fine
  • 1499 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 62 (literal)
Rivista
Note
  • PubMe (literal)
  • Google Scholar (literal)
  • Scopu (literal)
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Dipartimento di Scienza dei Materiali, Università degli Studi di Lecce Dipartimento di Chimica, Università degli Studi di Bari CNR, Istituto per i Processi Chimico-Fisici, Sezione di Bari (literal)
Titolo
  • Heavy metal ion influence on the photosynthetic growth of Rhodobacter sphaeroides (literal)
Abstract
  • The potential of purple non-sulphur bacteria for bioremediation was assessed by investigating the ability of Rhodobacter sphaeroides strain R26.1 to grow photosynthetically in heavy metal contaminated environments. Bacterial cultures were carried out in artificially polluted media, enriched with the transition metal ions Hg2+, Cu2+, Fe2+, Ni2+, Co2+, MoO2? 4 , and CrO2? 4 in millimolar concentration range. For each investigated ion the effect on growth parameters was evaluated. The analysis of concentration-effect curves revealed a differentiated response, indicating that diverse mechanisms of tolerance and/or resistance are involved. Adaptation or selection procedures were not applied, leading to assess intrinsic abilities of coping with these contaminants. The microorganism proved to be highly tolerant to heavy metal exposure, especially towards Co2+, Fe2+ and MoO2? 4 . In addition Ni2+ and Co2+ were found to decrease the cellular content of light harvesting complexes. A characteristic behavior was observed with mercuric ions, which produced a significant increase of the lag-phase. (literal)
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