Isolation and characterization of a copper-resistant methanogen from a copper-mining soil sample.
APPLIED AND ENVIRONMENTAL MICROBIOLOGY(1996)
摘要
A copper-resistant methanogen for which the CuSO4 MICs were similar to 2- to 36-fold higher than those for other methanogens tested was isolated from a copper-mining area in the upper peninsula of Michigan. The rod-shaped methanogen used H-2-CO2 or formate, but not acetate or methanol, as a growth substrate. Standing incubation with H-2-CO2 medium resulted in a mat-like surface growth, dependent on the presence of hydrogen. The presence of 1 mM cupric salt resulted in longer filamentous and intertwined cells. Antigenic fingerprinting, 16S rRNA gene analysis, morphology, and substrate use suggest that the new isolate is a novel strain of Methanobacterium bryantii that is able to use formate.
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关键词
Methanogenic Archaea,Methanotrophy
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