↓ Skip to main content

Community of thermoacidophilic and arsenic resistant microorganisms isolated from a deep profile of mine heaps

Overview of attention for article published in AMB Express, August 2015
Altmetric Badge

About this Attention Score

  • Among the highest-scoring outputs from this source (#45 of 268)
  • Above-average Attention Score compared to outputs of the same age (59th percentile)
  • High Attention Score compared to outputs of the same age and source (87th percentile)

Mentioned by

twitter
2 tweeters

Citations

dimensions_citation
13 Dimensions

Readers on

mendeley
31 Mendeley
Title
Community of thermoacidophilic and arsenic resistant microorganisms isolated from a deep profile of mine heaps
Published in
AMB Express, August 2015
DOI 10.1186/s13568-015-0132-5
Pubmed ID
Authors

S Casas-Flores, E Y Gómez-Rodríguez, J V García-Meza

Abstract

Soluble arsenic (As) in acidic feed solution may inhibit the copper (Cu) bioleaching process within mine heaps. To clarify the effect of soluble arsenic on the live biomass and bioxidative activity in heaps, toxicological assays were performed using a synthetic feed solution given by a mine company. The microorganisms had previously been isolated from two heap samples at up to 66 m depth, and cultured using specific media for chemolithotrophic acidophiles (pH 1-2) and moderate thermophiles (48°C), for arsenic tolerance assay. The four media with the highest biomass were selected to assay As-resistance; one culture (Q63h) was chosen to assay biooxidative activity, using a heap sample that contained chalcopyrite and covellite. We found that 0.5 g/L of As does not affect living biomass or biooxidative activity on Cu sulfides, but it dissolves Cu, while As precipitates as arsenic acid (H3AsO4·½H2O). The arsenic tolerant community, as identified by 16S rDNA gene sequence analysis, was composed of three main metabolic groups: chemolithotrophs (Leptospirillum, Sulfobacillus); chemolithoheterotrophs and organoheterotrophs as Acidovorax temperans, Pseudomonas alcaligenes, P. mendocina and Sphingomonas spp. Leptospirillum spp. and S. thermosulfidooxidans were the dominant taxa in the Q63-66 cultures from the deepest sample of the oldest, highest-temperature heap. The results indicated arsenic resistance in the microbial community, therefore specific primers were used to amplify ars (arsenic resistance system), aio (arsenite oxidase), or arr (arsenate respiratory reduction) genes from total sample DNA. Presence of arsB genes in S. thermosulfidooxidans in the Q63-66 cultures permits H3AsO4-As(V) detoxification and strengthens the community's response to As.

Twitter Demographics

The data shown below were collected from the profiles of 2 tweeters who shared this research output. Click here to find out more about how the information was compiled.

Mendeley readers

The data shown below were compiled from readership statistics for 31 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Brazil 1 3%
Unknown 30 97%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 7 23%
Student > Master 6 19%
Student > Bachelor 5 16%
Researcher 5 16%
Student > Postgraduate 2 6%
Other 5 16%
Unknown 1 3%
Readers by discipline Count As %
Environmental Science 7 23%
Biochemistry, Genetics and Molecular Biology 7 23%
Agricultural and Biological Sciences 6 19%
Immunology and Microbiology 4 13%
Engineering 2 6%
Other 3 10%
Unknown 2 6%

Attention Score in Context

This research output has an Altmetric Attention Score of 2. 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 19 August 2015.
All research outputs
#2,284,901
of 5,561,997 outputs
Outputs from AMB Express
#45
of 268 outputs
Outputs of similar age
#74,774
of 192,234 outputs
Outputs of similar age from AMB Express
#3
of 24 outputs
Altmetric has tracked 5,561,997 research outputs across all sources so far. This one has received more attention than most of these and is in the 57th percentile.
So far Altmetric has tracked 268 research outputs from this source. They receive a mean Attention Score of 2.1. This one has done well, scoring higher than 78% of its peers.
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 192,234 tracked outputs that were published within six weeks on either side of this one in any source. This one has gotten more attention than average, scoring higher than 59% of its contemporaries.
We're also able to compare this research output to 24 others from the same source and published within six weeks on either side of this one. This one has done well, scoring higher than 87% of its contemporaries.