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Genetic similarities between Cyclospora cayetanensis and cecum-infecting avian Eimeria spp. in apicoplast and mitochondrial genomes

Overview of attention for article published in Parasites & Vectors, July 2015
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Title
Genetic similarities between Cyclospora cayetanensis and cecum-infecting avian Eimeria spp. in apicoplast and mitochondrial genomes
Published in
Parasites & Vectors, July 2015
DOI 10.1186/s13071-015-0966-3
Pubmed ID
Authors

Kevin Tang, Yaqiong Guo, Longxian Zhang, Lori A. Rowe, Dawn M. Roellig, Michael A. Frace, Na Li, Shiyou Liu, Yaoyu Feng, Lihua Xiao

Abstract

Cyclospora cayetanensis is an important cause for diarrhea in children in developing countries and foodborne outbreaks of cyclosporiasis in industrialized nations. To improve understanding of the basic biology of Cyclospora spp. and development of molecular diagnostic tools and therapeutics, we sequenced the complete apicoplast and mitochondrial genomes of C. cayetanensis. The genome of one Chinese C. cayetanensis isolate was sequenced using Roche 454 and Illumina technologies. The assembled genomes of the apicoplast and mitochondrion were retrieved, annotated, and compared with reference genomes for other apicomplexans to infer genome organizations and phylogenetic relationships. Sequence variations in the mitochondrial genome were identified by comparison of two C. cayetanensis nucleotide sequences from this study and a recent publication. The apicoplast and mitochondrial genomes of C. cayetanensis are 34,155 and 6,229 bp in size and code for 65 and 5 genes, respectively. Comparative genomic analysis showed high similarities between C. cayetanensis and Eimeria tenella in both genomes; they have 85.6 % and 90.4 % nucleotide sequence similarities, respectively, and complete synteny in gene organization. Phylogenetic analysis of the genomic sequences confirmed the genetic similarities between cecum-infecting avian Eimeria spp. and C. cayetanensis. Like in other coccidia, both genomes of C. cayetanensis are transcribed bi-directionally. The apicoplast genome is circular, codes for the complete machinery for protein biosynthesis, and contains two inverted repeats that differ slightly in LSU rRNA gene sequences. In contrast, the mitochondrial genome has a linear concatemer or circular mapping topology. Eight single-nucleotide and one 7-bp multiple-nucleotide variants were detected between the mitochondrial genomes of C. cayetanensis from this and recent studies. The apicoplast and mitochondrial genomes of C. cayetanensis are highly similar to those of cecum-infecting avian Eimeria spp. in both genome organization and sequences. The availability of sequence data beyond rRNA and heat shock protein genes could facilitate studies of C. cayetanensis biology and development of genotyping tools for investigations of cyclosporiasis outbreaks.

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Mendeley readers

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The data shown below were compiled from readership statistics for 43 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Mexico 1 2%
China 1 2%
Unknown 41 95%

Demographic breakdown

Readers by professional status Count As %
Student > Bachelor 8 19%
Researcher 7 16%
Student > Master 7 16%
Student > Ph. D. Student 5 12%
Professor 3 7%
Other 6 14%
Unknown 7 16%
Readers by discipline Count As %
Agricultural and Biological Sciences 13 30%
Biochemistry, Genetics and Molecular Biology 10 23%
Immunology and Microbiology 6 14%
Medicine and Dentistry 3 7%
Veterinary Science and Veterinary Medicine 1 2%
Other 1 2%
Unknown 9 21%
Attention Score in Context

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 12 July 2015.
All research outputs
#20,282,766
of 22,816,807 outputs
Outputs from Parasites & Vectors
#4,844
of 5,461 outputs
Outputs of similar age
#218,971
of 262,361 outputs
Outputs of similar age from Parasites & Vectors
#97
of 121 outputs
Altmetric has tracked 22,816,807 research outputs across all sources so far. This one is in the 1st percentile – i.e., 1% of other outputs scored the same or lower than it.
So far Altmetric has tracked 5,461 research outputs from this source. They typically receive a little more attention than average, with a mean Attention Score of 5.7. This one is in the 1st percentile – i.e., 1% of its peers scored the same or lower than it.
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