Azoarcus
genus of bacteria
Azoarcus is a genus of nitrogen-fixing bacteria. Species in this genus are usually found in contaminated water, as they are involved in the degradation of some contaminants, commonly inhabiting soil. These bacteria have also been found growing in the endophytic compartment (inside the plant between the living cells) of some rice species and other grasses. The genus is within the family Zoogloeaceae in the Rhodocyclales of the Betaproteobacteria.
Many studies reported this genus about its potential extracellular electron uptake metabolism and has been found in the cathodic part of many microbial fuel cells, notably in nitrate and oxygen reducing bio-cathodes biofilms.
References
Further reading
Hurek T, Reinhold-Hurek B (June 1995). "Identification of grass-associated and toluene-degrading diazotrophs, Azoarcus spp., by analyses of partial 16S ribosomal DNA sequences". Applied and Environmental Microbiology. 61 (6): 2257–61. Bibcode:1995ApEnM..61.2257H. doi:10.1128/aem.61.6.2257-2261.1995.
“Azoarcus” enters the record as genus of bacteria. Crown Archives preserves that source wording while asking what Azoarcus, genus and bacteria can confirm, complicate or overturn.
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“Azoarcus” is worth following because a concise public description often conceals a longer documentary argument. Here, Azoarcus, genus and bacteria provides the most credible route into that argument.
The date and method of observation matter as much as the stated conclusion, especially where classification or consensus has changed. The source revision retrieved here is dated Sep 19, 2026. The linked authority identifier is Q5715092. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1995 and 1128.
Current terminology should not be projected backward without checking the classification used when the underlying evidence was created. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
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This entry incorporates text from “Azoarcus” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.