Molecular Mechanisms for the Variation of Mitochondrial Gene Content and Gene Arrangement Among Chigger Mites of the Genus Leptotrombidium (Acari: Acariformes)

Renfu Shao; S C Barker; H Mitani; M Takahashi; M Fukunaga

doi:10.1007/s00239-005-0196-y

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Molecular Mechanisms for the Variation of Mitochondrial Gene Content and Gene Arrangement Among Chigger Mites of the Genus Leptotrombidium (Acari: Acariformes)

Journal article

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Molecular Mechanisms for the Variation of Mitochondrial Gene Content and Gene Arrangement Among Chigger Mites of the Genus Leptotrombidium (Acari: Acariformes)

Renfu Shao, S C Barker, H Mitani, M Takahashi and M Fukunaga

Journal of Molecular Evolution, Vol.63(2), pp.251-260

2006

DOI: https://doi.org/10.1007/s00239-005-0196-y

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Abstract

Biochemistry and Cell Biology

Evolutionary Biology

Genetics

concerted evolution

genome evolution

gene order

gene rearrangement

Leptotrombidium

mitochondrial genome

mtDNA recombination

The gene content of a mitochondrial (mt) genome, i.e., 37 genes and a large noncoding region (LNR), is usually conserved in Metazoa. The arrangement of these genes and the LNR is generally conserved at low taxonomic levels but varies substantially at high levels. We report here a variation in mt gene content and gene arrangement among chigger mites of the genus Leptotrombidium. We found previously that the mt genome of Leptotrombidium pallidum has an extra gene for large-subunit rRNA (rrnL), a pseudo-gene for small-subunit rRNA (PrrnS), and three extra LNRs, additional to the 37 genes and an LNR typical of Metazoa. Further, the arrangement of mt genes of L. pallidum differs drastically from that of the hypothetical ancestor of the arthropods. To find to what extent the novel gene content and gene arrangement occurred in Leptotrombidium, we sequenced the entire or partial mt genomes of three other species, L. akamushi, L. deliense, and L. fletcheri. These three species share the arrangement of all genes with L. pallidum, except trnQ (for tRNA-glutamine). Unlike L. pallidum, however, these three species do not have extra rrnL or PrrnS and have only one extra LNR. By comparison between Leptotrombidium species and the ancestor of the arthropods, we propose that (1) the type of mt genome present in L. pallidum evolved from the type present in the other three Leptotrombidium species, and (2) three molecular mechanisms were involved in the evolution of mt gene content and gene arrangement in Leptotrombidium species.

Details

Title: Molecular Mechanisms for the Variation of Mitochondrial Gene Content and Gene Arrangement Among Chigger Mites of the Genus Leptotrombidium (Acari: Acariformes)
Authors: Renfu Shao (Author) - University of Queensland
S C Barker (Author) - University of Queensland
H Mitani (Author) - Fukuyama University, Japan
M Takahashi (Author) - Kawagoe Sogo Senior High School, Japan
M Fukunaga (Author) - Fukuyama University, Japan
Publication details: Journal of Molecular Evolution, Vol.63(2), pp.251-260
Publisher: Springer New York LLC
Date published: 2006
DOI: 10.1007/s00239-005-0196-y
ISSN: 0022-2844
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: 99449995702621
Output Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Web Of Science research areas: Biochemistry & Molecular Biology; Evolutionary Biology; Genetics & Heredity

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