Recalcitrant high-molecular-weight material, an inhibitor of microbial metabolism in river biofilms
Article Abstract:
The effects of recalcitrant high-molecular-weight materials (>1K materials) on the metabolic activity of surface biofilms were studied. Recalcitrant >1K materials inhibited the metabolic activity of surfacebiofilms. This inhibition was found to be dependent on the levels of recalcitrant >1K materials in rivers. Microbial studies showed reduced levels of storage granules when recalcitrant >1K materials were increased. Furthermore nontoxic synthetic analogs also inhibited surface biofilm metabolism. The results suggest that recalcitrant >1K materials may be used to control fouling river biofilms.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1992
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Diversity of aquatic actinomycetes in lakes of the middle plateau, Yunnan, China
Article Abstract:
The number and diversity of actinomycetes depends on the chemical, physical, and biological characteristics of lakes in the middle plateau of Yunnan, China. The actinomycetes populations are less in lakes with sand sediments, deep water, and low nutrient content. The lakes contain 16 different genera and the actinomycetes density is 39 to 89%. The thermophilic actinomycetes are present in small amounts. The actinomycetes are probably involved in the decomposition of organic compounds including toxic substances such as phenol.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1996
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Microbial activity in aquatic environments measured by dimethyl sulfoxide reduction and intercomparison with commonly used methods
Article Abstract:
A new method is presented for observing fungal and bacterial microbial activity within a variety of freshwater habitats. The method uses a microbial reduction of dimethyl sulfoxide, dimethyl sulfide, to measure interstitial water and water column respiratory activity, offering a nonradioactive alternative to conventional measurement processes.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 2001
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