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Microbial life at high salt concentrations: phylogenetic and metabolic diversity

Overview of attention for article published in Saline Systems, January 2008
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About this Attention Score

  • In the top 25% of all research outputs scored by Altmetric
  • High Attention Score compared to outputs of the same age (95th percentile)

Mentioned by

blogs
1 blog
twitter
4 tweeters
wikipedia
2 Wikipedia pages
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1 Q&A thread

Citations

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619 Dimensions

Readers on

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839 Mendeley
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1 CiteULike
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Title
Microbial life at high salt concentrations: phylogenetic and metabolic diversity
Published in
Saline Systems, January 2008
DOI 10.1186/1746-1448-4-2
Pubmed ID
Authors

Aharon Oren

Abstract

Halophiles are found in all three domains of life. Within the Bacteria we know halophiles within the phyla Cyanobacteria, Proteobacteria, Firmicutes, Actinobacteria, Spirochaetes, and Bacteroidetes. Within the Archaea the most salt-requiring microorganisms are found in the class Halobacteria. Halobacterium and most of its relatives require over 100-150 g/l salt for growth and structural stability. Also within the order Methanococci we encounter halophilic species. Halophiles and non-halophilic relatives are often found together in the phylogenetic tree, and many genera, families and orders have representatives with greatly different salt requirement and tolerance. A few phylogenetically coherent groups consist of halophiles only: the order Halobacteriales, family Halobacteriaceae (Euryarchaeota) and the anaerobic fermentative bacteria of the order Halanaerobiales (Firmicutes). The family Halomonadaceae (Gammaproteobacteria) almost exclusively contains halophiles. Halophilic microorganisms use two strategies to balance their cytoplasm osmotically with their medium. The first involves accumulation of molar concentrations of KCl. This strategy requires adaptation of the intracellular enzymatic machinery, as proteins should maintain their proper conformation and activity at near-saturating salt concentrations. The proteome of such organisms is highly acidic, and most proteins denature when suspended in low salt. Such microorganisms generally cannot survive in low salt media. The second strategy is to exclude salt from the cytoplasm and to synthesize and/or accumulate organic 'compatible' solutes that do not interfere with enzymatic activity. Few adaptations of the cells' proteome are needed, and organisms using the 'organic-solutes-in strategy' often adapt to a surprisingly broad salt concentration range. Most halophilic Bacteria, but also the halophilic methanogenic Archaea use such organic solutes. A variety of such solutes are known, including glycine betaine, ectoine and other amino acid derivatives, sugars and sugar alcohols. The 'high-salt-in strategy' is not limited to the Halobacteriaceae. The Halanaerobiales (Firmicutes) also accumulate salt rather than organic solutes. A third, phylogenetically unrelated organism accumulates KCl: the red extremely halophilic Salinibacter (Bacteroidetes), recently isolated from saltern crystallizer brines. Analysis of its genome showed many points of resemblance with the Halobacteriaceae, probably resulting from extensive horizontal gene transfer. The case of Salinibacter shows that more unusual types of halophiles may be waiting to be discovered.

Twitter Demographics

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Mendeley readers

The data shown below were compiled from readership statistics for 839 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
United States 6 <1%
Germany 4 <1%
Brazil 4 <1%
Australia 3 <1%
Switzerland 2 <1%
Portugal 2 <1%
Mexico 2 <1%
South Africa 2 <1%
India 2 <1%
Other 8 <1%
Unknown 804 96%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 170 20%
Student > Bachelor 144 17%
Student > Master 133 16%
Researcher 114 14%
Student > Doctoral Student 55 7%
Other 111 13%
Unknown 112 13%
Readers by discipline Count As %
Agricultural and Biological Sciences 316 38%
Biochemistry, Genetics and Molecular Biology 147 18%
Environmental Science 53 6%
Immunology and Microbiology 44 5%
Chemistry 35 4%
Other 108 13%
Unknown 136 16%

Attention Score in Context

This research output has an Altmetric Attention Score of 16. 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 2022.
All research outputs
#1,970,968
of 22,655,397 outputs
Outputs from Saline Systems
#3
of 23 outputs
Outputs of similar age
#7,363
of 155,781 outputs
Outputs of similar age from Saline Systems
#1
of 4 outputs
Altmetric has tracked 22,655,397 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 91st percentile: it's in the top 10% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 23 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 10.1. This one scored the same or higher as 20 of them.
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 155,781 tracked outputs that were published within six weeks on either side of this one in any source. This one has done particularly well, scoring higher than 95% of its contemporaries.
We're also able to compare this research output to 4 others from the same source and published within six weeks on either side of this one. This one has scored higher than all of them