Isolation and characterization of an ammonium-oxidizing iron reducer: Acidimicrobiaceae sp. A6
Year: 2018
Type: article
Abstract: Acidimicrobiaceae sp.A6 (ATCC, PTA-122488), a strain that has been previously reported to play a key role in the oxidation of ammonium (NH 4 + ) under iron reducing conditions, has now been isolated from riparian wetland soils in New Jersey, USA.Incubations of this strain in a medium containing ferrihydrite as the ferric iron [Fe(III)] source, CO 2 as the carbon source, under room temperature, and a pH of 4.5, resulted in 52% of NH 4 + removal over a 20-day incubation period, while reducing Fe(III) in the expected stoichiometric ratio when NH 4 + was oxidized to nitrite with Fe(III) as the electron acceptor.This study demonstrates that this new isolated strain is capable of oxidizing NH 4 + while reducing iron under anaerobic conditions.-), or NO 2 -has received significant interest.The process was first noted in a forested riparian wetland in New Jersey [4-6], and was also observed in a biological reactor and coined Feammox [7].The Feammox process has been reported so far in riparian wetland soils in New Jersey [4-6, 8], in tropical rainforest soils in Puerto Rico [9], in wetland soils in South Carolina [8], and at various forested and wetland locations in Southern China, including paddy soils [8].Recent studies indicate that the Feammox reaction appears to be more common in acidic, iron rich, wetland environments [4,[8][9][10].In our previous study, conducted with soil samples obtained from a forest riparian wetland (Assunpink Wildlife Management Area, New Jersey), simultaneous anaerobic NH 4 + oxidation and iron reduction reactions was always accompanied by the increase in abundance of a group of Actinobacteria.Among them, an
Source: PLoS ONE
Authors: Shan Huang, Peter R. Jaffé
Institution: Princeton University
Language: English
Subfield: Pollution
Field: Environmental Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,382
OpenAlex ID: W2797561811