Molecular evidence for the broad distribution of anaerobic ammonium-oxidizing bacteria in freshwater and marine sediments

Article Abstract:

A new primer set was designed that was 100% specific in the recovery of ~700-bp16S rRNA gene sequences with of the 'Candidatus Scalindua' group of anammox bacteria. It provided evidence for the wide distribution of anammox bacteria within aquatic environments, greatly increased the number of anammox related sequences deposited and represented a rapid and efficient method for determining the presence of anammox bacteria.

Genetic aspects, Marine bacteria, Ribosomal RNA, Anaerobic bacteria

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Biphasic behavior of anammox regulated by nitrite and nitrate in an estuarine sediment

Article Abstract:

An investigation of the production of N2 gas through anammox is conducted in sediment slurries in situ NO(sub 2)(super -) concentrations in the presence and absence of NO(sub 3)(super -). The behavior of anammox is explored by use of a simple anammox-denitrification model, and the concept of a biphasic system for anammox in estuarine sediments is proposed.

Analysis, Soils, Estuarine sediments, Soil nitrogen

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Anaerobic ammonium oxidation measured in sediments along the Thames estuary, United Kingdom

Article Abstract:

An attempt is made to look for direct evidence of environmental anaerobic ammonium oxidation in estuarine sediments at one site in the Thames estuary, UK. The organically enriched sediments of the Thames estuary, although representing only 18% of the total sediment area, are responsible for 34% of the total mineralization of organic material.

Oxidation-reduction reaction, Oxidation-reduction reactions, Estuaries

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