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Microbiological Oxidation of Antimony(III) with Oxygen or Nitrate by Bacteria Isolated from Contaminated Mine Sediments

Overview of attention for article published in Applied and Environmental Microbiology, October 2015
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Title
Microbiological Oxidation of Antimony(III) with Oxygen or Nitrate by Bacteria Isolated from Contaminated Mine Sediments
Published in
Applied and Environmental Microbiology, October 2015
DOI 10.1128/aem.01970-15
Pubmed ID
Authors

Lee R. Terry, Thomas R. Kulp, Heather Wiatrowski, Laurence G. Miller, Ronald S. Oremland

Abstract

Bacterial oxidation of arsenite [As(III)] is a well-studied and important biogeochemical pathway that directly influences the mobility and toxicity of arsenic in the environment. By contrast, little is known about microbiological oxidation of the chemically similar anion, antimonite [Sb(III)]. In this study, two bacterial strains, designated IDSBO-1 and IDSBO-4, that grow on tartrate compounds and oxidize Sb(III) using either oxygen or nitrate, respectively, as terminal electron acceptors were isolated from contaminated mine sediments. Both isolates belonged to the Comamonadacae family and were 99% similar to previously described species. We identify these novel strains as Hydrogenophaga taeniospiralis strain IDSBO-1 and Variovorax paradoxus strain IDSBO-4. Both strains possess a gene with homology to the aioA gene which encodes an As(III)-oxidase, and both oxidize As(III) aerobically, but only IDSBO-4 oxidized Sb(III) in the presence of air while strain IDSBO-1 could achieve this via nitrate-respiration. Our results suggest that expression of aioA is not induced by Sb(III), but may be involved in Sb(III) oxidation along with a Sb(III) specific pathway. Phylogenetic analysis of proteins encoded by the aioA genes revealed a close sequence similarity (90%) among the two isolates and other known As(III) oxidizing bacteria, particularly Acidovorax sp. NO1. Both isolates were capable of chemolithoautotrophic growth using As(III) as a primary electron donor, and strain IDSBO-4 exhibited incorporation of radiolabeled (14)C-bicarbonate while oxidizing Sb(III) from Sb(III)-tartrate, suggesting possible Sb(III)-dependent autotrophy. Enrichment cultures produced the Sb(V) oxide mineral mopungite, and lesser amounts of Sb(III)-bearing senarmontite, as precipitates.

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Mendeley readers

The data shown below were compiled from readership statistics for 30 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Russia 1 3%
Canada 1 3%
Unknown 28 93%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 11 37%
Unspecified 5 17%
Student > Master 4 13%
Student > Bachelor 3 10%
Other 3 10%
Other 4 13%
Readers by discipline Count As %
Agricultural and Biological Sciences 7 23%
Unspecified 7 23%
Environmental Science 5 17%
Earth and Planetary Sciences 4 13%
Chemistry 2 7%
Other 5 17%

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 09 October 2015.
All research outputs
#7,848,862
of 12,508,562 outputs
Outputs from Applied and Environmental Microbiology
#7,473
of 9,509 outputs
Outputs of similar age
#131,300
of 249,478 outputs
Outputs of similar age from Applied and Environmental Microbiology
#109
of 184 outputs
Altmetric has tracked 12,508,562 research outputs across all sources so far. This one is in the 23rd percentile – i.e., 23% of other outputs scored the same or lower than it.
So far Altmetric has tracked 9,509 research outputs from this source. They typically receive a little more attention than average, with a mean Attention Score of 6.9. This one is in the 14th percentile – i.e., 14% of its peers scored the same or lower than it.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 249,478 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 37th percentile – i.e., 37% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 184 others from the same source and published within six weeks on either side of this one. This one is in the 32nd percentile – i.e., 32% of its contemporaries scored the same or lower than it.