Microbial diversity in heavy-metal polluted waters

Satchanska, Galina and Pentcheva, Elka N. and Atanasova, Radostina and Groudeva, Veneta and Trifonova, Radoslava and Golovinsky, Evgeny (2005) Microbial diversity in heavy-metal polluted waters. Biotechnology & Biotechnological Equipment, 19 (3). pp. 61-67. ISSN 1310-2818

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Indigenious water microflora as well as the presence of metal- and xenobiotic biotransforming bacteria were investigated in waters near the KCM Pb-Zn smelter, South Bulgaria.
Content of As, Hg, Cd, Mn, Pb, Cu and Zn exceeded in times the maximum permission standart. Absence of some microbial groups demonstrated a change in the microbial community structure in the region. Ecotoxicology test ISO/DIS 10712.2 displayed toxic environmental effect of the polluted waters, especially one of them which demonstrated 72
% of ecotoxicity. More than 20 ecologically relevant new bacteria were cultured. Three of them demonstrated tolerance to Cd, Cu and Mn and five- a tolerance to 2,4-dichlorphenoxyacetic acid. Our result revealed that the heavy metal pollutions reduced the microbial diversity in the studied waters, are ecotoxic as well as that some of newly isolated bacteria possess a capacity for a clean-up biotechnologies in the region.

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Item Type:Article
Subjects:Medicine and biology > Natural sciences
ID Code:593
Deposited By: гл. ас. д-р Галина Сачанска
Deposited On:13 Aug 2010 12:09
Last Modified:10 Oct 2013 07:19

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