Toxic effects of linear alkylbenzene sulfonate on metabolic activity, growth rate, and microcolony formation of Nitrosomonas and Nitrosospira strains

Article Abstract:

Autotrophic ammonia-oxidizing bacteria are more sensitive to linear alkylbenzene sulfonate (LAS) than heterotrophic bacteria, which makes them a potentially useful environmental marker of pollution. Microbial growth, viability, and ammonia oxidation were severely affected even at sublethal LAS levels.

Environmental aspects, Microbial metabolism, Soil pollution

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The isotope array, a new tool that employs substrate-mediated labeling of rRNA for determination of microbial community structure and function

Article Abstract:

A new microarray method, the isotope array approach, for identifying microorganisms, which consumes a (super 13)C-labeled substrate within complex microbial communities, was developed. The results suggest that the isotope array could be used in a PCR-independent manner to exploit the high parallelism and discriminatory power of microarrays for the direct identification of microorganisms, which consume a specific substrate in the environment.

Science & research, Identification and classification, Microorganisms, Ribosomal RNA, DNA microarrays

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Characterization of methanotrophic bacterial populations in soils showing atmospheric methane uptake

Article Abstract:

Researchers have discovered an unknown group of methanotrophic bacteria that participates in the soil sink for atmospheric methane. Monooxygenase gene analysis indicates that the bacteria belong to the alpha subclass of Proteobacteria and are only distantly related to other methane-oxidizing strains.

Atmospheric chemistry, Soil absorption and adsorption, Absorption, Soil science, Methanobacteriaceae, Methanogens

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