Influence of inorganic nitrogen management regime on the diversity of nitrite-oxidizing bacteria in agricultural grassland soils

Article Abstract:

The influence of agricultural management practices on the diversity of nitrite-oxidizing bacteria (NOB) is determined by examining communities of Nitrospira and Nitrobacter in fertilized and unfertilized grassland soils. Public-domain 16S rRNA gene databases are analyzed to assess evolutionary relationships of clone sequences not associated with NOB and to design primers encompassing NOB and closely related lineages.

Nitrogenous Fertilizer Manufacturing, Nitrogenous fertilizers, Nitrogen Plant Food, Genetic aspects, Bacteria, Nitrifying, Nitrobacteraceae, Chemical properties, Nitrogen fertilizers

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Community structure of ammonia-oxidizing bacteria within anoxic marine sediments

Article Abstract:

Research indicates that ammonia oxidation is important for biotic communities in anoxic marine sediments. Results show the presence of beta-proteobacterial ammonia-oxidizing bacteria, which use anoxic metabolism for growth, activity, and survival. There appears to be no gamma-proteobacterial ammonia oxidizers or Anammox organisms in the sediments.

United Kingdom, Analysis, Composition, Biotic communities, Marine sediments, Microbial populations, Structure

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Differences between betaproteobacterial ammonia-oxidizing communities in marine sediments and those in overlying water

Article Abstract:

Clone libraries and denaturant gradient gel electrophoresis of 16S rRNA gene fragments are analyzed. This is done to assess links between betaproteobacterial ammonia oxidizing bacteria found in marine sediments and overlying water from communities in Loch Duich, Scotland.

Science & research, Research, Gel electrophoresis, Ribosomal RNA, Proteolysis

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