Annwoodia
genus of bacteria
The genus Annwoodia was named in 2017 to circumscribe an organism previously described as a member of the genus Thiobacillus, Thiobacillus aquaesulis - the type and only species is Annwoodia aquaesulis, which was isolated from the geothermal waters of the Roman Baths in the city of Bath in the United Kingdom by Ann P. Wood and Donovan P. Kelly of the University of Warwick - the genus was subsequently named to honour Wood's contribution to microbiology. The genus falls within the family Thiobacillaceae along with Thiobacillus and Sulfuritortus, both of which comprise autotrophic organisms dependent on thiosulfate, other sulfur oxyanions and sulfide as electron donors for chemolithoheterotrophic growth. Whilst Annwoodia spp. and Sulfuritortus spp. are thermophilic, Thiobacillus spp. are mesophilic.
A. aquaesulis is moderately thermophilic with an optimum temperature of 43 °C and a temperature range of 30 °C to 55 °C - a similar temperature profile to the related genus Sulfuritortus - and is a facultative chemolithoautotroph that grows on reduced sulfur oxyanions such as thiosulfate as the electron donor and carbon dioxide or bicarbonate as the carbon source. Unlike Thiobacillus spp., Annwoodia spp. do not produce tetrathionate during growth on thiosulfate and can also grow heterotrophically on nutrient broth. Elementary sulfur is deposited by the organism in batch culture with thiosulfate as the electron donor, but not in chemostat culture.
The public source identifies “Annwoodia” as genus of bacteria. This brief keeps that definition visible, then builds a research path around Annwoodia, genus and bacteria.
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Stable identifiers, scientific names and standards terminology offer the best bridge between this overview and specialist evidence. The source revision retrieved here is dated Feb 17, 2026. The linked authority identifier is Q48999579. The first chronological checks are 2017.
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This entry incorporates text from “Annwoodia” 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.