Inhibition of nitrifiers and methanotrophs from an agricultural humisol by allylsulfide and its implications for environmental studies
Article Abstract:
Allylsulfide, an inhibitor of ammonia monooxygenase, was tested to determine its ability to inhibit nitrification and methane oxidation in pure cultures, in agricultural humisol enrichment cultures, and in humisol slurries. Studies have confirmed that allylsulfide is a differential inhibitor of cultures of nitrifiers and methanotrophs at concentrations of 1 and 200 microM, respectively, which result in 50% inhibition. Studies showed that 500 microM allylsulfide was necessary for 50% inhibition of the endogenous nitrifying activity in nonsterile humisol.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1999
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A new assay for lignin-type peroxidases employing the dye azure B
Article Abstract:
The veratryl alcohol (VA) assay is the routine procedure used to detect and quantify lignin peroxidase activity. These assays are limited by the possibilities of end product reduction by the fungus, low sensitivity and their proneness to interference from ultraviolet and short-wavelength visible-light absorbing materials. A new procedure, using the dye Azure B, has been developed. This procedure is as simple and rapid as the VA assays but is not as prone to their shortcomings.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1992
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Coliform bacteria and nitrogen fixation in pulp and paper mill effluent treatment systems
Article Abstract:
Researchers report the first known identification of nitrogen-fixing bacteria in pulp and paper mill primary clarifiers. About half of the culturable cells contained nitrogenase and 90% of these cells were identified as Klebsiella strains.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 2000
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