Journal article
The Complete Mitochondrial Genomes of Three Parasitic Nematodes of Birds: a Unique Gene Order and Insights into Nematoda Phylogeny
BMC Genomics, Vol.14, 414
2013
Abstract
Background: Analyses of mitochondrial (mt) genome sequences in recent years challenge the current working hypothesis of Nematoda phylogeny proposed from morphology, ecology and nuclear small subunit rRNA gene sequences, and raise the need to sequence additional mt genomes for a broad range of nematode lineages. Results: We sequenced the complete mt genomes of three Ascaridia species (family Ascaridiidae) that infest chickens, pigeons and parrots, respectively. These three Ascaridia species have an identical arrangement of mt genes to each other but differ substantially from other nematodes. Phylogenetic analyses of the mt genome sequences of the Ascaridia species, together with 62 other nematode species, support the monophylies of seven high-level taxa of the phylum Nematoda: 1) the subclass Dorylaimia; 2) the orders Rhabditida, Trichinellida and Mermithida; 3) the suborder Rhabditina; and 4) the infraorders Spiruromorpha and Oxyuridomorpha. Analyses of mt genome sequences, however, reject the monophylies of the suborders Spirurina and Tylenchina, and the infraorders Rhabditomorpha, Panagrolaimomorpha and Tylenchomorpha. Monophyly of the infraorder Ascaridomorpha varies depending on the methods of phylogenetic analysis. The Ascaridomorpha was more closely related to the infraorders Rhabditomorpha and Diplogasteromorpha (suborder Rhabditina) than they were to the other two infraorders of the Spirurina: Oxyuridorpha and Spiruromorpha. The closer relationship among Ascaridomorpha, Rhabditomorpha and Diplogasteromorpha was also supported by a shared common pattern of mitochondrial gene arrangement. Conclusions: Analyses of mitochondrial genome sequences and gene arrangement has provided novel insights into the phylogenetic relationships among several major lineages of nematodes. Many lineages of nematodes, however, are underrepresented or not represented in these analyses. Expanding taxon sampling is necessary for future phylogenetic studies of nematodes with mt genome sequences.
Details
- Title
- The Complete Mitochondrial Genomes of Three Parasitic Nematodes of Birds: a Unique Gene Order and Insights into Nematoda Phylogeny
- Authors
- Guo-Hua Liu (Author) - Chinese Academy of Agricultural Sciences, ChinaRenfu Shao (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and EngineeringJia-Yuan Li (Author) - Chinese Academy of Agricultural Sciences, ChinaDong-Hui Zhou (Author) - Chinese Academy of Agricultural Sciences, ChinaHu Li (Author) - China Agricultural University, ChinaXing-Quan Zhu (Author) - Chinese Academy of Agricultural Sciences, China
- Publication details
- BMC Genomics, Vol.14, 414
- Publisher
- BioMed Central Ltd.
- Date published
- 2013
- DOI
- 10.1186/1471-2164-14-414
- ISSN
- 1471-2164
- Copyright note
- Copyright © 2013 Liu et al. This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
- Organisation Unit
- School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering; Centre for Bioinnovation
- Language
- English
- Record Identifier
- 99448843602621
- Output Type
- Journal article
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