Characterization of the extremely arsenic-resistant Brevibacterium linens strain AE038-8 isolated from contaminated groundwater in Tucumán, Argentina

International Biodeterioration and Biodegradation
By: , and 

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Abstract

Brevibacterium linens AE038-8, isolated from As-contaminated groundwater in Tucumán (Argentina), is highly resistant to arsenic oxyanions, being able to tolerate up to 1 M As(V) and 75 mM As(III) in a complex medium. Strain AE038-8 was also able to reduce As(V) to As(III) when grown in complex medium but paradoxically it could not do this in a defined minimal medium with sodium acetate and ammonium sulfate as carbon and nitrogen sources, respectively. No oxidation of As(III) to As(V) was observed under any conditions. Three copies of the ars operon comprising arsenic resistance genes were found on B. linens AE038-8 genome. In addition to the well known arsCACR3 andarsR, two copies of the arsO gene of unknown function were detected.

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Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Characterization of the extremely arsenic-resistant Brevibacterium linens strain AE038-8 isolated from contaminated groundwater in Tucumán, Argentina
Series title International Biodeterioration and Biodegradation
DOI 10.1016/j.ibiod.2015.11.022
Volume 107
Year Published 2015
Language English
Publisher Elsevier Applied Science
Publisher location Barking, Essex, England
Contributing office(s) National Research Program - Western Branch
Description 7 p.
First page 147
Last page 153
Country Argentina
State Tucumán
City Los Pereyra
Online Only (Y/N) N
Additional Online Files (Y/N) N