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Brachyspira suanatina sp. nov., an enteropathogenic intestinal spirochaete isolated from pigs and mallards: genomic and phenotypic characteristics

Overview of attention for article published in BMC Microbiology, October 2015
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Title
Brachyspira suanatina sp. nov., an enteropathogenic intestinal spirochaete isolated from pigs and mallards: genomic and phenotypic characteristics
Published in
BMC Microbiology, October 2015
DOI 10.1186/s12866-015-0537-y
Pubmed ID
Authors

Mamoona Mushtaq, Saima Zubair, Therese Råsbäck, Erik Bongcam-Rudloff, Désirée S. Jansson

Abstract

The genus Brachyspira currently encompasses seven valid species that colonize the intestines of mammals and birds. In a previous study a group of strongly haemolytic isolates from pigs and mallards was provisionally described as a new species within genus Brachyspira, "B. suanatina", and enteropathogenic properties were demonstrated in a porcine challenge model. In the current study characterization of B. suanatina was performed on the basis of cell morphology, growth characteristics, enzyme profiles, DNA-DNA hybridization (DDH) and whole genome comparisons. The draft genome sequence of B. suanatina strain AN4859/03 was determined and compared with the available genomes of all valid species of Brachyspira. According to morphological traits, growth characteristics and enzymatic profiles, B. suanatina was similar to the type strain of B. hyodysenteriae, but using the recommended threshold value of 70 % similarity by DDH it did not belong to any of the recognized Brachyspira species (range 16-64 % similarity). This was further supported by average nucleotide identity values. Phylogenetic analysis performed using housekeeping genes and core genomes of all valid Brachyspira sp. and "B. hampsonii" revealed that B. suanatina and B. intermedia formed a clade distinct from B. hyodysenteriae. By comparing the genomes of the three closely related species B. intermedia, B. hyodysenteriae and B. suanatina similar profiles of general genomic features and distribution of genes in different functional categories were obtained. However, the genome size of B. hyodysenteriae was smallest among the species, suggesting the possibility of reductive evolution in the divergence of this species. A bacteriophage region and a putative plasmid sequence were also found in the genome of B. suanatina strain AN4859/03. The results of our study suggest that despite being similar to B. hyodysenteriae phenotypically, B. suanatina should be regarded as a separate species based on its genetic characteristics. Based on characteristics presented in this report we propose that strains AN4859/03, AN1681:1/04, AN2384/04 and Dk12570-2 from pigs in Sweden and Denmark, and strains AN3949:2/02 and AN1418:2/01 isolated from mallards in Sweden, represent a unique species within genus Brachyspira. For this new species we propose the name B. suanatina for which the type strain is AN4859/03(T) (=ATCC® BAA-2592™ = DSM 100974(T)).

Twitter Demographics

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Mendeley readers

The data shown below were compiled from readership statistics for 19 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Switzerland 1 5%
Canada 1 5%
Unknown 17 89%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 5 26%
Researcher 3 16%
Lecturer > Senior Lecturer 2 11%
Student > Bachelor 2 11%
Other 2 11%
Other 2 11%
Unknown 3 16%
Readers by discipline Count As %
Agricultural and Biological Sciences 8 42%
Veterinary Science and Veterinary Medicine 2 11%
Immunology and Microbiology 2 11%
Biochemistry, Genetics and Molecular Biology 1 5%
Computer Science 1 5%
Other 0 0%
Unknown 5 26%

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 29 June 2016.
All research outputs
#5,753,645
of 7,965,219 outputs
Outputs from BMC Microbiology
#849
of 1,336 outputs
Outputs of similar age
#153,023
of 244,625 outputs
Outputs of similar age from BMC Microbiology
#44
of 84 outputs
Altmetric has tracked 7,965,219 research outputs across all sources so far. This one is in the 24th percentile – i.e., 24% of other outputs scored the same or lower than it.
So far Altmetric has tracked 1,336 research outputs from this source. They receive a mean Attention Score of 3.0. This one is in the 30th percentile – i.e., 30% of its peers scored the same or lower than it.
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