Abstract：
:Bacteria communities living in mucus secretions of common carp Cyprinus carpio (Cyprinidae) were exposed to the organic nanomaterial fullerene (C(60)) to evaluate its potential bactericidal effects. End points analyzed were viability, growth, reactive oxygen species (ROS) concentration, and total antioxidant competence against peroxyl radicals. Viability was not affected (p > 0.05), whereas growth was arrested (p < 0.05) after 3 hours of exposure to the three concentration of C(60) assayed (0.1, 1, and 10 mg/L). Levels of RO measured at different C(60) concentration showed that some colonies were reactive (significant dose-response relation, p < 0.05) to C(60), whereas others were not. The nonreactive colonies to C(60) presented higher antioxidant competence to peroxyl radicals compared with the reactive colonies (p < 0.05). The strains isolated and identified by polymerase chain reaction (PCR) products of 16S rRNA showed a predominance of Aeromonas genus between all the isolated Gram-negative bacteria. Thus, the present results indicate that C(60) affects bacterial communities that live in mucus secretions of common carp.
journal_name
Arch Environ Contam Toxicoljournal_title
Archives of environmental contamination and toxicologyauthors
Letts RE,Pereira TC,Bogo MR,Monserrat JMdoi
10.1007/s00244-010-9618-ysubject
Has Abstractpub_date
2011-08-01 00:00:00pages
311-7issue
2eissn
0090-4341issn
1432-0703journal_volume
61pub_type
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