The mitochondrial genome of the Japanese freshwater crab, Geothelphusa dehaani (Crustacea: Brachyura): Evidence for its evolution via gene duplication

Segawa, Ryoko; Aotsuka, Tadashi

doi:10.1016/j.gene.2005.05.020

Cited by 62 publications

(45 citation statements)

References 42 publications

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“…Animal mitochondrial (mt) genomes are circular DNA molecules ~17 kb in length that encode the major enzymes for oxidative metabolism and ATP production. Mitochondrial genome sequences have been used to determine phylogenetic relationships among animals of different taxa because of the conservation of the protein-coding sequences and the variability of the non-coding portion [13][14][15]. The mt genome in animals typically contains 37 genes (13 protein-coding, two ribosomal, and 22 transfer RNA genes) and one major non-coding region, the displacement loop or D-loop.…”

Section: Citationmentioning

confidence: 99%

Mitochondrial genome sequences of Artemia tibetiana and Artemia urmiana: assessing molecular changes for high plateau adaptation

Zhang

Luo

Sun

et al. 2013

Sci. China Life Sci.

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Brine shrimps, Artemia (Crustacea, Anostraca), inhabit hypersaline environments and have a broad geographical distribution from sea level to high plateaus. Artemia therefore possess significant genetic diversity, which gives them their outstanding adaptability. To understand this remarkable plasticity, we sequenced the mitochondrial genomes of two Artemia tibetiana isolates from the Tibetan Plateau in China and one Artemia urmiana isolate from Lake Urmia in Iran and compared them with the genome of a low-altitude Artemia, A. franciscana. We compared the ratio of the rate of nonsynonymous (Ka) and synonymous (Ks) substitutions (Ka/Ks ratio) in the mitochondrial protein-coding gene sequences and found that atp8 had the highest Ka/Ks ratios in comparisons of A. franciscana with either A. tibetiana or A. urmiana and that atp6 had the highest Ka/Ks ratio between A. tibetiana and A. urmiana. Atp6 may have experienced strong selective pressure for high-altitude adaptation because although A. tibetiana and A. urmiana are closely related they live at different altitudes. We identified two extended termination-associated sequences and three conserved sequence blocks in the D-loop region of the mitochondrial genomes. We propose that sequence variations in the D-loop region and in the subunits of the respiratory chain complexes independently or collectively contribute to the adaptation of Artemia to different altitudes. mitochondrial genome, Artemia tibetiana, sequence variation, high plateau species Citation:Zhang H X, Luo Q B, Sun J, et al. Mitochondrial genome sequences of Artemia tibetiana and Artemia urmiana: assessing molecular changes for high plateau adaptation. Sci China Life Sci, 2013Sci, , 56: 440 -452, doi: 10.1007 Brine shrimps, Artemia (Crustacea, Anostraca), have a broad geographical distribution and inhabit hypersaline environments that vary considerably in their anionic composition, climate, and altitude. The major anions that contribute to anionic composition include chloride, sulfate, carbonate, or combinations of up to all three [1]. Artemia species can be found in altitudes from sea level to over 4000 m above sea level; for example, in Tibet (4000 m) and in the East African Plateau (over 5000 m). Artemia can survive in harsh environments other than in high salinity, including low atmospheric pressure, rarefied air, cold temperature, and long winters, as well as in climatological conditions that range from humid to arid [2]. Artemia species are capable of switching their reproduction strategies between sexual and parthenogenetic forms in a single life cycle [1,3,4], and populations can survive through cold winters by producing diapause cysts [5][6][7]. Because of their distinct features, Ar- Zhang H X, et al. Sci China Life Sci May (2013) Vol.56 No.5 441 temia draw significant scientific interest from several areas including ecology, aquaculture, physiology, ecotoxicology, and genetics [8][9][10][11][12]. Animal mitochondrial (mt) genomes are circular DNA molecules ~17 kb in length that encode the ma...

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Section: Citationmentioning

confidence: 99%

Mitochondrial genome sequences of Artemia tibetiana and Artemia urmiana: assessing molecular changes for high plateau adaptation

Zhang

Luo

Sun

et al. 2013

Sci. China Life Sci.

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“…In Decopoda, the situation is more complex: four penaeid shrimp species (Dendrobranchiata) share the pancrustacean ground pattern (Shen et al, 2007;Wilson et al, 2000;Yamauchi et al, 2004), but in the suborder Pleocyemata, members of Anomura, Astacidea and Brachyura show some rearrangements (Hickerson and Cunningham, 2000;Miller et al, 2005;Miller et al, 2004;Place et al, 2005;Segawa and Aotsuka, 2005;Sun et al, 2005;Yamauchi et al, 2003;Yang et al, 2008), while Japanese spiny lobster Panulirus japonicus (Palinura) maintains the pancrustacean ground pattern (Yamauchi et al, 2002).…”

Section: Gene Ordermentioning

confidence: 99%

The complete mitochondrial genome of the ridgetail white prawn Exopalaemon carinicauda Holthuis, 1950 (Crustacean: Decapoda: Palaemonidae) revealed a novel rearrangement of tRNA genes

Shen

Sun

et al. 2009

Gene

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“…The putative control region of D. galeata, D. cucullata and D. hyalina is located between the tRNA-Ile and the 12S rRNA gene, which is thought to represent the ancestral position in the insect-crustacean arrangement (Crease, 1999;Lavrov et al, 2000Lavrov et al, , 2002Segawa and Aotsuka, 2005). It is also called the A+T-rich region, since in the genus Drosophila the adenine and thymine content ranges between 90% and 96% (Fauron and Wolstenholme, 1976).…”

Section: General Characteristics Of Daphnia Control Regionsmentioning

confidence: 99%

Conservation of structural elements in the mitochondrial control region of Daphnia

Kuhn

Streit

Schwenk

2008

Gene

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The mitochondrial genome of the Japanese freshwater crab, Geothelphusa dehaani (Crustacea: Brachyura): Evidence for its evolution via gene duplication

Cited by 62 publications

References 42 publications

Mitochondrial genome sequences of Artemia tibetiana and Artemia urmiana: assessing molecular changes for high plateau adaptation

Mitochondrial genome sequences of Artemia tibetiana and Artemia urmiana: assessing molecular changes for high plateau adaptation

The complete mitochondrial genome of the ridgetail white prawn Exopalaemon carinicauda Holthuis, 1950 (Crustacean: Decapoda: Palaemonidae) revealed a novel rearrangement of tRNA genes

Conservation of structural elements in the mitochondrial control region of Daphnia

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