Heavy metal resistance patterns of Frankia strains
Abstract
The sensitivity of 12 Frankia strains to heavy metals was determined by a growth inhibition assay. In general, all of the strains were sensitive to low concentrations (50 mM), and SeO22- (1.5 to 3.5 mM). While most strains were sensitive to 0.1 MM CU2+, four strains were resistant to elevated levels of Cu2+ (2 to 5 mM and concentrations as high as 20 mM). The mechanism of SeO22- resistance seems to involve reduction of the selenite oxyanion to insoluble elemental selenium, whereas Pb2+ resistance and Cu2+ resistance may involve sequestration or binding mechanisms. Indications of the resistance mechanisms for the other heavy metals were not as clear.
Publication Date
2-1-2002
Journal Title
Applied and Environmental Microbiology
Publisher
American Society for Microbiology
Digital Object Identifier (DOI)
10.1128/AEM.68.2.923-927.2002
Scientific Contribution Number
2076
Document Type
Article
Rights
Copyright © 2002, American Society for Microbiology. All Rights Reserved.
Recommended Citation
Richards, Joel W.; Krumholz, Glenn D.; Chval, Matthew S.; and Tisa, Louis S., "Heavy metal resistance patterns of Frankia strains" (2002). Applied and Environmental Microbiology. 7.
https://scholars.unh.edu/nhaes/7
