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Satoh TP, Miya M, Mabuchi K, Nishida M. Structure and variation of the mitochondrial genome of fishes. BMC Genomics 2016; 17:719. [PMID: 27604148 PMCID: PMC5015259 DOI: 10.1186/s12864-016-3054-y] [Citation(s) in RCA: 148] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Accepted: 08/27/2016] [Indexed: 11/10/2022] Open
Abstract
Background The mitochondrial (mt) genome has been used as an effective tool for phylogenetic and population genetic analyses in vertebrates. However, the structure and variability of the vertebrate mt genome are not well understood. A potential strategy for improving our understanding is to conduct a comprehensive comparative study of large mt genome data. The aim of this study was to characterize the structure and variability of the fish mt genome through comparative analysis of large datasets. Results An analysis of the secondary structure of proteins for 250 fish species (248 ray-finned and 2 cartilaginous fishes) illustrated that cytochrome c oxidase subunits (COI, COII, and COIII) and a cytochrome bc1 complex subunit (Cyt b) had substantial amino acid conservation. Among the four proteins, COI was the most conserved, as more than half of all amino acid sites were invariable among the 250 species. Our models identified 43 and 58 stems within 12S rRNA and 16S rRNA, respectively, with larger numbers than proposed previously for vertebrates. The models also identified 149 and 319 invariable sites in 12S rRNA and 16S rRNA, respectively, in all fishes. In particular, the present result verified that a region corresponding to the peptidyl transferase center in prokaryotic 23S rRNA, which is homologous to mt 16S rRNA, is also conserved in fish mt 16S rRNA. Concerning the gene order, we found 35 variations (in 32 families) that deviated from the common gene order in vertebrates. These gene rearrangements were mostly observed in the area spanning the ND5 gene to the control region as well as two tRNA gene cluster regions (IQM and WANCY regions). Although many of such gene rearrangements were unique to a specific taxon, some were shared polyphyletically between distantly related species. Conclusions Through a large-scale comparative analysis of 250 fish species mt genomes, we elucidated various structural aspects of the fish mt genome and the encoded genes. The present results will be important for understanding functions of the mt genome and developing programs for nucleotide sequence analysis. This study demonstrated the significance of extensive comparisons for understanding the structure of the mt genome. Electronic supplementary material The online version of this article (doi:10.1186/s12864-016-3054-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Takashi P Satoh
- Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa City, Chiba, 277-8654, Japan. .,Collection Center, National Museum of Nature and Science, 4-1-1 Amakubo, Tsukuba City, Ibaraki, 305-0005, Japan. .,Present address: Seto Marine Biological Laboratory, Field Science Education and Research Center, Kyoto University, 459 Shirahama, Nishimuro, Wakayama, 649-2211, Japan.
| | - Masaki Miya
- Natural History Museum and Institute, 955-2 Aoba-cho, Chuo-ku, Chiba City, Chiba, 260-8682, Japan
| | - Kohji Mabuchi
- Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa City, Chiba, 277-8654, Japan
| | - Mutsumi Nishida
- Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa City, Chiba, 277-8654, Japan. .,Present address: University of the Ryukyus, 1 Senbaru, Nishihara-cho, Okinawa, 908-0213, Japan.
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Zhang XC, Li W, Zhao J, Chen HG, Zhu XP. Novel duplication pattern of the mitochondrial control region in Cantor's Giant softshell turtle Pelochelys cantorii. Gene 2016; 593:242-248. [PMID: 27565702 DOI: 10.1016/j.gene.2016.08.036] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Revised: 08/06/2016] [Accepted: 08/22/2016] [Indexed: 10/21/2022]
Abstract
Cantor's Giant Softshell Turtle, Pelochelys cantorii has become one of the most critically endangered species in the world. When comparative analyses of the P. cantorii complete mitochondrial genome sequences were conducted, we discovered a duplication of a segment of the control region in the mitochondrial genome of P. cantorii. The duplication is characterized by two copies of conserved sequence box 2 (CSB2) and CSB3 in a single control region. In contrast to previous reports of duplications involving the control regions of other animals, this particular pattern of duplications appears to be unique to P. cantorii. Copies of the CSB2 and CSB3 show many of the conserved sequence features typically found in mitochondrial control regions, and rare differences were found between the paralogous copies. Using the primer design principle of simple sequence repeats (SSR) and the reference sequence of the duplicated CSBs, specific primers were designed to amplify the duplicated CSBs. These primers were validated among different individuals and populations of P. cantorii. This unique duplication structure suggests the two copies of the CSB2 and CSB3 may have arisen through occasional tandem duplication and subsequent concerted evolution.
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Affiliation(s)
- Xin-Cheng Zhang
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi, Jiangsu 214081, PR China; Key Laboratory of Tropical & Subtropical Fishery Resource Application & Cultivation of Ministry of Agriculture, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510380, PR China
| | - Wei Li
- Key Laboratory of Tropical & Subtropical Fishery Resource Application & Cultivation of Ministry of Agriculture, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510380, PR China
| | - Jian Zhao
- Key Laboratory of Tropical & Subtropical Fishery Resource Application & Cultivation of Ministry of Agriculture, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510380, PR China
| | - Hai-Gang Chen
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi, Jiangsu 214081, PR China; Key Laboratory of Tropical & Subtropical Fishery Resource Application & Cultivation of Ministry of Agriculture, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510380, PR China
| | - Xin-Ping Zhu
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi, Jiangsu 214081, PR China; Key Laboratory of Tropical & Subtropical Fishery Resource Application & Cultivation of Ministry of Agriculture, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510380, PR China.
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103
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Shan B, Song N, Han Z, Wang J, Gao T, Yokogawa K. Complete mitochondrial genomes of three sea basses Lateolabrax (Perciformes, Lateolabracidae) species: Genome description and phylogenetic considerations. BIOCHEM SYST ECOL 2016. [DOI: 10.1016/j.bse.2016.04.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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104
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Tsai T, St John JC. The role of mitochondrial DNA copy number, variants, and haplotypes in farm animal developmental outcome. Domest Anim Endocrinol 2016; 56 Suppl:S133-46. [PMID: 27345311 DOI: 10.1016/j.domaniend.2016.03.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Revised: 03/11/2016] [Accepted: 03/15/2016] [Indexed: 01/20/2023]
Abstract
The vast majority of cellular energy is generated through the process of oxidative phosphorylation, which takes place in the electron transport chain in the mitochondria. The electron transport chain is encoded by 2 genomes, the chromosomal and the mitochondrial genomes. Mitochondrial DNA is associated with a number of traits, which include tolerance to heat, growth and physical performance, meat and milk quality, and fertility. Mitochondrial genomes can be clustered into groups known as mtDNA haplotypes. Mitochondrial DNA haplotypes are a potential genetic source for manipulating phenotypes in farm animals. The use of assisted reproductive technologies, such as nuclear transfer, allows favorable chromosomal genetic traits to be mixed and matched with sought after mtDNA haplotype traits. As a result super breeds can be generated.
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Affiliation(s)
- Tesha Tsai
- Centre for Genetic Diseases, Hudson Institute of Medical Research, Clayton, Vic, 3168, Australia; Department of Molecular and Translational Science, Monash University, Clayton, Vic, 3168, Australia
| | - Justin C St John
- Centre for Genetic Diseases, Hudson Institute of Medical Research, Clayton, Vic, 3168, Australia; Department of Molecular and Translational Science, Monash University, Clayton, Vic, 3168, Australia.
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105
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Wei M, Liu Y, Guo H, Zhao F, Chen S. Characterization of the complete mitochondrial genome of Cynoglossus gracilis and a comparative analysis with other Cynoglossinae fishes. Gene 2016; 591:369-75. [PMID: 27312953 DOI: 10.1016/j.gene.2016.06.023] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Revised: 06/10/2016] [Accepted: 06/11/2016] [Indexed: 11/29/2022]
Abstract
Mitochondrial genomes can provide basic information for phylogenetic analysis and evolutionary studies. We present here the mitochondrial genome of Cynoglossus gracilis, which is 16,565bp in length. Numerous distinct regions were identified, including 13 protein-coding genes (PCGs), 22 tRNA genes, two rRNA genes, a light-strand replication origin, and a control region. Interestingly, we detected rearrangement of genes in C. gracilis, including a control region translocation, tRNA(Gln) gene inversion, and tRNA(Ile) gene shuffling. Additionally, a phylogenetic analysis based on the nucleotide sequences of the 13 PCGs using maximum likelihood and Bayesian inference methods reveals that C. gracilis is closely related to Cynoglossus semilaevis. This study provides important mitogenomic data for analyzing phylogenetic relationships in the Cynoglossinae.
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Affiliation(s)
- Min Wei
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi 214081, China; Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences (CAFS), Key Laboratory for Sustainable Development of Marine Fisheries, Ministry of Agriculture, Qingdao 266071, China
| | - Yang Liu
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi 214081, China; Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences (CAFS), Key Laboratory for Sustainable Development of Marine Fisheries, Ministry of Agriculture, Qingdao 266071, China
| | - Hua Guo
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences (CAFS), Key Laboratory for Sustainable Development of Marine Fisheries, Ministry of Agriculture, Qingdao 266071, China
| | - Fazhen Zhao
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi 214081, China; Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences (CAFS), Key Laboratory for Sustainable Development of Marine Fisheries, Ministry of Agriculture, Qingdao 266071, China
| | - Songlin Chen
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi 214081, China; Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences (CAFS), Key Laboratory for Sustainable Development of Marine Fisheries, Ministry of Agriculture, Qingdao 266071, China.
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106
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Escobedo-Morales LA, Mandujano S, Eguiarte LE, Rodríguez-Rodríguez MA, Maldonado JE. First phylogenetic analysis of Mesoamerican brocket deer Mazama pandora and Mazama temama (Cetartiodactyla: Cervidae) based on mitochondrial sequences: Implications for Neotropical deer evolution. Mamm Biol 2016. [DOI: 10.1016/j.mambio.2016.02.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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107
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Kumar A, Kumar RR, Sharma BD, Gokulakrishnan P, Mendiratta SK, Sharma D. Identification of species origin of meat and meat products on the DNA basis: a review. Crit Rev Food Sci Nutr 2016; 55:1340-51. [PMID: 24915324 DOI: 10.1080/10408398.2012.693978] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
The adulteration/substitution of meat has always been a concern for various reasons such as public health, religious factors, wholesomeness, and unhealthy competition in meat market. Consumer should be protected from these malicious practices of meat adulterations by quick, precise, and specific identification of meat animal species. Several analytical methodologies have been employed for meat speciation based on anatomical, histological, microscopic, organoleptic, chemical, electrophoretic, chromatographic, or immunological principles. However, by virtue of their inherent limitations, most of these techniques have been replaced by the recent DNA-based molecular techniques. In the last decades, several methods based on polymerase chain reaction have been proposed as useful means for identifying the species origin in meat and meat products, due to their high specificity and sensitivity, as well as rapid processing time and low cost. This review intends to provide an updated and extensive overview on the DNA-based methods for species identification in meat and meat products.
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Affiliation(s)
- Arun Kumar
- a Division of Livestock Products Technology , Indian Veterinary Research Institute , Izatnagar, Bareilly , 243122 , Uttar Pradesh , India
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108
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Complete mitochondrial genome of the Himalayan serow (Capricornis thar) and its phylogenetic status within the genus Capricornis. BIOCHEM SYST ECOL 2016. [DOI: 10.1016/j.bse.2016.02.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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109
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Feng H, Feng C, Wang L, Huang Y. Complete mitochondrial genome of the golden takin ( Budorcas taxicolor bedfordi). MITOCHONDRIAL DNA PART B-RESOURCES 2016; 1:186-188. [PMID: 33644339 PMCID: PMC7871817 DOI: 10.1080/23802359.2016.1149792] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The complete mitochondrial genome sequence of Budorcas taxicolor bedfordi was 16 662-bp long, containing 13 protein-coding genes (PCGs), 22 tRNA genes, 2 rRNA genes and a control region. All of the PCGs begin with the typical ATN start codon. Stop codons TAA and AGA are present in the PCGs; exceptions are ND2, COIII, ND3 and ND4, which possess incomplete termination codon (T––). Secondary structure prediction of the 22 tRNA genes revealed the absence of the DHU arm in tRNASer(AGN).
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Affiliation(s)
- Hui Feng
- Experiment center, Shaanxi Institute of Zoology, Xi'an, China
| | - Chengli Feng
- Experiment center, Shaanxi Institute of Zoology, Xi'an, China
| | - Lu Wang
- Experiment center, Shaanxi Institute of Zoology, Xi'an, China
| | - Yuan Huang
- College of Life Sciences, Shaanxi Normal University, Xi'an, China
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110
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Muangkram Y, Amano A, Wajjwalku W, Pinyopummintr T, Thongtip N, Kaolim N, Sukmak M, Kamolnorranath S, Siriaroonrat B, Tipkantha W, Maikaew U, Thomas W, Polsrila K, Dongsaard K, Sanannu S, Wattananorrasate A. Genetic diversity of the captive Asian tapir population in Thailand, based on mitochondrial control region sequence data and the comparison of its nucleotide structure with Brazilian tapir. Mitochondrial DNA A DNA Mapp Seq Anal 2016; 28:597-601. [DOI: 10.3109/24701394.2016.1149828] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Yuttamol Muangkram
- Graduate School of Life Sciences, Ritsumeikan University, Kusatsu, Shiga Japan
- The Graduate School, Kasetsart University, Jatujak, Bangkok, Thailand
- Faculty of Veterinary Medicine, Kasetsart University, Nakhon Pathom, Thailand
| | - Akira Amano
- Graduate School of Life Sciences, Ritsumeikan University, Kusatsu, Shiga Japan
| | - Worawidh Wajjwalku
- Faculty of Veterinary Medicine, Kasetsart University, Nakhon Pathom, Thailand
| | - Tanu Pinyopummintr
- Faculty of Veterinary Medicine, Kasetsart University, Nakhon Pathom, Thailand
| | - Nikorn Thongtip
- Faculty of Veterinary Medicine, Kasetsart University, Nakhon Pathom, Thailand
| | - Nongnid Kaolim
- Faculty of Veterinary Medicine, Kasetsart University, Nakhon Pathom, Thailand
| | - Manakorn Sukmak
- Faculty of Veterinary Medicine, Kasetsart University, Nakhon Pathom, Thailand
| | - Sumate Kamolnorranath
- Bureau of Conservation, Research and Education, Zoological Park Organization, Dusit, Bangkok, Thailand
| | - Boripat Siriaroonrat
- Bureau of Conservation, Research and Education, Zoological Park Organization, Dusit, Bangkok, Thailand
| | - Wanlaya Tipkantha
- Bureau of Conservation, Research and Education, Zoological Park Organization, Dusit, Bangkok, Thailand
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111
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Tzur S, Rosset S. Strictly conserved tri-nucleotide motif "CAT" is associated with TAS DNA protein-binding sites in human mitochondrial DNA control region. Mitochondrial DNA A DNA Mapp Seq Anal 2015; 28:250-253. [PMID: 26713725 DOI: 10.3109/19401736.2015.1118068] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The mitochondrial DNA (mtDNA) control region is a highly variable segment that contains functional elements that control mtDNA transcription and replication. By analysis of the polymorphic nucleotide spectrum of that segment, we aimed to identify the most conserved sites that should be associated with these elements. For that aim, we analyzed 50 033 human mtDNA control region sequences (mtDNA positions 16 066-16 374). We identified 10 conserved tri-nucleotides, one conserved tetra-nucleotide, and one conserved penta-nucleotide, containing six repetitions of the motif CAT, and two of its complement motif ATG (p value < 2 × 10 - 4). Three other appearances of the tri-nucleotide CAT were almost perfectly preserved. The positions of the preserved CAT elements are associated with the location of previously identified termination-associated sequences (TAS) which are the binding locations for proteins involved in mtDNA replication. We, therefore, hypothesize that the CAT tri-nucleotide elements within the control region may be the binding sites for TAS proteins and are directly involved in mtDNA transcription and replication.
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Affiliation(s)
- Shay Tzur
- a Molecular Medicine Laboratory , Rambam Health Care Campus , Haifa , Israel
| | - Saharon Rosset
- b Department of Statistics and Operations Research , Tel Aviv University , Tel Aviv , Israel
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112
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Meng S, Pan T, Sun Z, Bei Y, Meng T, Li G, Wu D, Zhang B. Extremely low genetic diversity of mtDNA control region and remarkable population differentiation of Ichthyophis bannanicus (Amphibia: Gymnophiona). Mitochondrial DNA A DNA Mapp Seq Anal 2015; 28:98-103. [PMID: 26678840 DOI: 10.3109/19401736.2015.1110816] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
It is widely accepted that the mitochondrial DNA (mtDNA) control region (CR) gene evolves more quickly than protein-encoding genes, such as ND2 and Cyt b, with few exceptions. However, some species have a different evolution pattern. In the present study, we sequenced the mtDNA CR partial sequences (454 base pairs) of 142 individuals from five sampling sites of Ichthyophis bannanicus and compared the genetic diversity and structure with the information from the NADH dehydrogenase subunit 2 (ND2) and Cytochrome b (Cyt b) genes within this species. Extremely low genetic diversity was found in the mtDNA CR compared with those of the ND2 and Cyt b genes. These results showed that the relatively mean clock rate of the CR was broadly lower than those of the ND2 (about 2.55 times) and Cyt b (about 3.14 times) genes. Despite the extremely low genetic diversity of CR, the population structure analysis identified two groups, Xishuangbanna and Northern Vietnam-Yulin-Yangchun-Deqing, which indicated that the Red River systems may have acted as gene-flow barriers for I. bannanicus.
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Affiliation(s)
- Shaoquan Meng
- a College of Life Sciences, Fujian Agriculture and Forest University , Fuzhou , Fujian , China.,b College of Life Science & Technology, Yulin Normal University , Yulin , Guangxi , China
| | - Tao Pan
- c School of Life Science, Anhui University , Hefei , Anhui , China , and
| | - Zhonglou Sun
- c School of Life Science, Anhui University , Hefei , Anhui , China , and
| | - Yongjian Bei
- b College of Life Science & Technology, Yulin Normal University , Yulin , Guangxi , China
| | - Tao Meng
- d Guangxi Forest Inventory and Planning Institute , Nanning , Guangxi , China
| | - Guifen Li
- b College of Life Science & Technology, Yulin Normal University , Yulin , Guangxi , China
| | - Defeng Wu
- a College of Life Sciences, Fujian Agriculture and Forest University , Fuzhou , Fujian , China
| | - Baowei Zhang
- c School of Life Science, Anhui University , Hefei , Anhui , China , and
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113
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Zhao L, Gao T, Lu W. Complete mitochondrial DNA sequence of the endangered fish (Bahaba taipingensis): Mitogenome characterization and phylogenetic implications. Zookeys 2015:181-95. [PMID: 26798311 PMCID: PMC4714352 DOI: 10.3897/zookeys.546.5964] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Accepted: 11/09/2015] [Indexed: 11/21/2022] Open
Abstract
To understand the systematic status of Bahabataipingensis within Sciaenidae, the complete mitochondrial genome (mitogenome) sequence of Chinese bahaba has recently been determined by long PCR and primer walking methods. The complete mitochondrial genome is 16500 bp in length and contains 37 mitochondrial genes (13 protein-coding genes, 2 ribosomal RNA genes and 22 transfer RNA genes) as well as a control region (CR) as other bony fishes. Within the control region, we identified the extended termination associated sequence domain (ETAS), the central conserved sequence block domain (CSB-D, SCB-E and CSB-F) and the conserved sequence block domain (CSB-1, CSB-2 and CSB-3). Phylogenetic analyses revealed that Bahabataipingensis is more closely related to Pseudosciaeniae than Argyrosominae and Sciaeninae. Additionally, Bahabataipingensis is the sister taxon of Miichthysmiiuy, and those two are sister to Collichthys plus Larimichthys.
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Affiliation(s)
- Linlin Zhao
- The First Institute of Oceanography, SOA, Qingdao, Shandong, 266003, P.R. China
| | - Tianxiang Gao
- Fishery College, Zhejiang Ocean University, Zhoushan, Zhejiang, 316000, P.R. China
| | - Weihua Lu
- Dongguan Bahaba Natural Conservation and Management Station, Dongguan, Guangdong, 523002 P.R. China
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114
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Li Z, Zhang Y, Chen S, Chen W, Hong W. Complete mitochondrial genome and phylogenic analysis of the mudskipper Scartelaos gigas (Perciformes, Gobiidae). Mitochondrial DNA A DNA Mapp Seq Anal 2015; 27:3812-4. [PMID: 26436681 DOI: 10.3109/19401736.2015.1082089] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
In this paper, the complete mitochondrial genome sequence of Scartelaos gigas was firstly determined. The circular genome (16 717 bp) comprises 13 protein-coding genes, 22 tRNA genes, 2 rRNA genes, and 1 control region. The overall base composition of S. gigas is 28.9% for C, 28.3% for A, 26.4% for T, 16.4% for G, with a slight A + T bias of 54.7%. In the control region, the termination-associated sequence and conserved sequence block domains were found, but the tandem repeat structure was not found. It has the typical vertebrate mitochondrial gene arrangement. The phylogenic analysis using the Neighbor-Joining method showed that the fishes belonging to Gobiidae, Odontoburidae, and Eleotridae formed three branches grouped with other fishes into one clade which separated from the mammals. We hope that the results from the present study will provide useful molecular information for the further studies on genetic structure and demographic history of S. gigas.
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Affiliation(s)
- Zhe Li
- a College of Ocean and Earth Sciences, Xiamen University , Xiamen , China
| | - Yuting Zhang
- a College of Ocean and Earth Sciences, Xiamen University , Xiamen , China
| | - Shixi Chen
- a College of Ocean and Earth Sciences, Xiamen University , Xiamen , China
| | - Wei Chen
- a College of Ocean and Earth Sciences, Xiamen University , Xiamen , China
| | - Wanshu Hong
- a College of Ocean and Earth Sciences, Xiamen University , Xiamen , China
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115
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Xia A, Zhong L, Chen X, Bian W, Zhang T, Shi Y. Complete mitochondrial genome of spined sleeper Eleotris oxycephala (Perciformes, Eleotridae) and phylogenetic consideration. BIOCHEM SYST ECOL 2015. [DOI: 10.1016/j.bse.2015.07.030] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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116
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Phylogenetic analyses of the harvest mouse, Micromys minutus (Rodentia: Muridae) based on the complete mitogenome sequences. BIOCHEM SYST ECOL 2015. [DOI: 10.1016/j.bse.2015.08.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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117
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Han C, Li Q, Xu J, Li X, Huang J. Characterization of Clarias gariepinus mitochondrial genome sequence and a comparative analysis with other catfishes. Biologia (Bratisl) 2015. [DOI: 10.1515/biolog-2015-0145] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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118
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Eberhard JR, Wright TF. Rearrangement and evolution of mitochondrial genomes in parrots. Mol Phylogenet Evol 2015; 94:34-46. [PMID: 26291569 DOI: 10.1016/j.ympev.2015.08.011] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Revised: 07/15/2015] [Accepted: 08/11/2015] [Indexed: 12/27/2022]
Abstract
Mitochondrial genome rearrangements that result in control region duplication have been described for a variety of birds, but the mechanisms leading to their appearance and maintenance remain unclear, and their effect on sequence evolution has not been explored. A recent survey of mitochondrial genomes in the Psittaciformes (parrots) found that control region duplications have arisen independently at least six times across the order. We analyzed complete mitochondrial genome sequences from 20 parrot species, including representatives of each lineage with control region duplications, to document the gene order changes and to examine effects of genome rearrangements on patterns of sequence evolution. The gene order previously reported for Amazona parrots was found for four of the six independently derived genome rearrangements, and a previously undescribed gene order was found in Prioniturus luconensis, representing a fifth clade with rearranged genomes; the gene order resulting from the remaining rearrangement event could not be confirmed. In all rearranged genomes, two copies of the control region are present and are very similar at the sequence level, while duplicates of the other genes involved in the rearrangement show signs of degeneration or have been lost altogether. We compared rates of sequence evolution in genomes with and without control region duplications and did not find a consistent acceleration or deceleration associated with the duplications. This could be due to the fact that most of the genome rearrangement events in parrots are ancient, and additionally, to an effect of body size on evolutionary rate that we found for mitochondrial but not nuclear sequences. Base composition analyses found that relative to other birds, parrots have unusually strong compositional asymmetry (AT- and GC-skew) in their coding sequences, especially at fourfold degenerate sites. Furthermore, we found higher AT skew in species with control region duplications. One potential cause for this compositional asymmetry is that parrots have unusually slow mtDNA replication. If this is the case, then any replicative advantage provided by having a second control region could result in selection for maintenance of both control regions once duplicated.
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Affiliation(s)
- Jessica R Eberhard
- Department of Biological Sciences and Museum of Natural Science, Louisiana State University, Baton Rouge, LA 70803, USA.
| | - Timothy F Wright
- Department of Biology, New Mexico State University, Las Cruces, NM 88003, USA
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Jemt E, Persson Ö, Shi Y, Mehmedovic M, Uhler JP, Dávila López M, Freyer C, Gustafsson CM, Samuelsson T, Falkenberg M. Regulation of DNA replication at the end of the mitochondrial D-loop involves the helicase TWINKLE and a conserved sequence element. Nucleic Acids Res 2015; 43:9262-75. [PMID: 26253742 PMCID: PMC4627069 DOI: 10.1093/nar/gkv804] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Accepted: 07/28/2015] [Indexed: 11/12/2022] Open
Abstract
The majority of mitochondrial DNA replication events are terminated prematurely. The nascent DNA remains stably associated with the template, forming a triple-stranded displacement loop (D-loop) structure. However, the function of the D-loop region of the mitochondrial genome remains poorly understood. Using a comparative genomics approach we here identify two closely related 15 nt sequence motifs of the D-loop, strongly conserved among vertebrates. One motif is at the D-loop 5'-end and is part of the conserved sequence block 1 (CSB1). The other motif, here denoted coreTAS, is at the D-loop 3'-end. Both these sequences may prevent transcription across the D-loop region, since light and heavy strand transcription is terminated at CSB1 and coreTAS, respectively. Interestingly, the replication of the nascent D-loop strand, occurring in a direction opposite to that of heavy strand transcription, is also terminated at coreTAS, suggesting that coreTAS is involved in termination of both transcription and replication. Finally, we demonstrate that the loading of the helicase TWINKLE at coreTAS is reversible, implying that this site is a crucial component of a switch between D-loop formation and full-length mitochondrial DNA replication.
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Affiliation(s)
- Elisabeth Jemt
- Department of Medical Biochemistry and Cell Biology, University of Gothenburg, P.O. Box 440, SE-405 30 Gothenburg, Sweden
| | - Örjan Persson
- Department of Medical Biochemistry and Cell Biology, University of Gothenburg, P.O. Box 440, SE-405 30 Gothenburg, Sweden
| | - Yonghong Shi
- Department of Medical Biochemistry and Cell Biology, University of Gothenburg, P.O. Box 440, SE-405 30 Gothenburg, Sweden
| | - Majda Mehmedovic
- Department of Medical Biochemistry and Cell Biology, University of Gothenburg, P.O. Box 440, SE-405 30 Gothenburg, Sweden
| | - Jay P Uhler
- Department of Medical Biochemistry and Cell Biology, University of Gothenburg, P.O. Box 440, SE-405 30 Gothenburg, Sweden
| | - Marcela Dávila López
- Department of Medical Biochemistry and Cell Biology, University of Gothenburg, P.O. Box 440, SE-405 30 Gothenburg, Sweden
| | - Christoph Freyer
- Department of Laboratory Medicine, Karolinska Institutet, Retzius väg 8, 171 77 Stockholm, Sweden
| | - Claes M Gustafsson
- Department of Medical Biochemistry and Cell Biology, University of Gothenburg, P.O. Box 440, SE-405 30 Gothenburg, Sweden
| | - Tore Samuelsson
- Department of Medical Biochemistry and Cell Biology, University of Gothenburg, P.O. Box 440, SE-405 30 Gothenburg, Sweden
| | - Maria Falkenberg
- Department of Medical Biochemistry and Cell Biology, University of Gothenburg, P.O. Box 440, SE-405 30 Gothenburg, Sweden
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Yoon KB, Cho CU, Park YC. The mitochondrial genome of the Saunders's gull Chroicocephalus saundersi (Charadriiformes: Laridae) and a higher phylogeny of shorebirds (Charadriiformes). Gene 2015; 572:227-36. [PMID: 26165451 DOI: 10.1016/j.gene.2015.07.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Revised: 06/20/2015] [Accepted: 07/07/2015] [Indexed: 01/22/2023]
Abstract
The complete mitogenome of Chroicocephalus saundersi was characterized and compared with the 6 published Charadriiformes mitogenomes. The mitogenome of C. saundersi is a closed circular molecule 16,739 bp in size, and contains 37 genes and a control region. The AT and GC skews are positive and negative, respectively, and in agreement with those of the other Charadriiformes mitogenomes. The mitogenome of C. saundersi contains 3 start codons (ATG, GTG, and ATT), 4 stop codons (TAA, TAG, AGG, and AGA), and an incomplete stop codon (T-) in 13 PCGs. A codon usage analysis of all available Charadriiformes mitogenomes showed that the ATG (78%) and TAA (50.5%) were the most common start codon and stop codon, respectively. An unusual start codon, ATT, is commonly found in the ND3s of Charadriiformes mitogenomes, whereas the more common start codons, ATC and ATA, are rarely found. In all the Laridae species, one extra cytosine was inserted at position 174 in ND3. The control region of C. saundersi is 1180-bp long, with a nucleotide composition of 30.2% A, 28.6% T, 27.3% C, and 14.0% G. Variable numbers of tandem repeats (VNTRs) with nine copies of the 10 bp repeat sequence (AACAACAAAC) are found within the CSB domain of the control region. The ML/BI analyses, based on the amino acids of the 13 mitochondrial PCGs, strongly support the monophyly of the order Charadriiformes, with the suborder Lari considered sister to the Scolopaci, which is in turn a sister group to the suborder Charadrii.
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Affiliation(s)
- Kwang Bae Yoon
- Division of Forest Science, Kangwon National University, Chuncheon 200-701, Republic of Korea
| | - Chea Un Cho
- Species Restoration Technology Institute, Korea National Park Service, Inje 252-829, Republic of Korea
| | - Yung Chul Park
- Division of Forest Science, Kangwon National University, Chuncheon 200-701, Republic of Korea.
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Huang YF, Midha M, Chen TH, Wang YT, Smith DG, Pei KJC, Chiu KP. Complete Taiwanese Macaque (Macaca cyclopis) Mitochondrial Genome: Reference-Assisted de novo Assembly with Multiple k-mer Strategy. PLoS One 2015; 10:e0130673. [PMID: 26125617 PMCID: PMC4488429 DOI: 10.1371/journal.pone.0130673] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Accepted: 05/24/2015] [Indexed: 11/18/2022] Open
Abstract
The Taiwanese (Formosan) macaque (Macaca cyclopis) is the only nonhuman primate endemic to Taiwan. This primate species is valuable for evolutionary studies and as subjects in medical research. However, only partial fragments of the mitochondrial genome (mitogenome) of this primate species have been sequenced, not mentioning its nuclear genome. We employed next-generation sequencing to generate 2 x 90 bp paired-end reads, followed by reference-assisted de novo assembly with multiple k-mer strategy to characterize the M. cyclopis mitogenome. We compared the assembled mitogenome with that of other macaque species for phylogenetic analysis. Our results show that, the M. cyclopis mitogenome consists of 16,563 nucleotides encoding for 13 protein-coding genes, 2 ribosomal RNAs and 22 transfer RNAs. Phylogenetic analysis indicates that M. cyclopis is most closely related to M. mulatta lasiota (Chinese rhesus macaque), supporting the notion of Asia-continental origin of M. cyclopis proposed in previous studies based on partial mitochondrial sequences. Our work presents a novel approach for assembling a mitogenome that utilizes the capabilities of de novo genome assembly with assistance of a reference genome. The availability of the complete Taiwanese macaque mitogenome will facilitate the study of primate evolution and the characterization of genetic variations for the potential usage of this species as a non-human primate model for medical research.
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Affiliation(s)
- Yu-Feng Huang
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
- * E-mail:
| | - Mohit Midha
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
- Institute of Biochemistry and Molecular Biology, National Yang-Ming University, Taipei, Taiwan
| | - Tzu-Han Chen
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Yu-Tai Wang
- National Center for High-Performance Computing, Hsinchu, Taiwan
| | - David Glenn Smith
- Department of Anthropology, University of California Davis, Davis, CA, United States of America
| | - Kurtis Jai-Chyi Pei
- Institute of Wildlife Conservation, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung, Taiwan
| | - Kuo Ping Chiu
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
- Institute of Biochemistry and Molecular Biology, National Yang-Ming University, Taipei, Taiwan
- College of Life Science, National Taiwan University, Taipei, Taiwan
- Institute of Systems Biology and Bioinformatics, National Central University, Jhongli, Taiwan
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Gong L, Shi W, Si LZ, Wang ZM, Kong XY. The complete mitochondrial genome of peacock sole Pardachirus pavoninus (Pleuronectiformes: Soleidae) and comparative analysis of the control region among 13 soles. Mol Biol 2015. [DOI: 10.1134/s0026893315030061] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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123
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Zou Y, Jing MD, Bi XX, Zhang T, Huang L. The complete mitochondrial genome sequence of the little egret (Egretta garzetta). Genet Mol Biol 2015; 38:162-72. [PMID: 26273219 PMCID: PMC4530654 DOI: 10.1590/s1415-4757382220140203] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2014] [Accepted: 12/02/2014] [Indexed: 11/22/2022] Open
Abstract
Many phylogenetic questions in the Ciconiiformes remain unresolved and complete mitogenome data are urgently needed for further molecular investigation. In this work, we determined the complete mitogenome sequence of the little egret (Egretta garzetta). The genome was 17,361 bp in length and the gene organization was typical of other avian mtDNA. In protein-coding genes (PCGs), a C insertion was found in ND3, and COIII and ND4 terminated with incomplete stop codons (T). tRNA-Val and tRNA-Ser (AGY) were unable to fold into canonical cloverleaf secondary structures because they had lost the DHU arms. Long repetitive sequences consisting of five types of tandem repeats were found at the 3' end of Domain III in the control region. A phylogenetic analysis of 11 species of Ciconiiformes was done using complete mitogenome data and 12 PCGs. The tree topologies obtained with these two strategies were identical, which strongly confirmed the monophyly of Ardeidae, Threskiorothidae and Ciconiidae. The phylogenetic analysis also revealed that Egretta was more closely related to Ardea than to Nycticorax in the Ardeidae, and Platalea was more closely related to Threskiornis than to Nipponia in the Threskiornithidae. These findings contribute to our understanding of the phylogenetic relationships of Ciconiiformes based on complete mitogenome data.
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Affiliation(s)
- Yi Zou
- College of Life Sciences, Ludong University, Yantai, Shandong, P.R. China
| | - Mei-Dong Jing
- College of Life Sciences, Ludong University, Yantai, Shandong, P.R. China
| | - Xiao-Xin Bi
- College of Life Sciences, Ludong University, Yantai, Shandong, P.R. China
| | - Ting Zhang
- College of Life Sciences, Ludong University, Yantai, Shandong, P.R. China
| | - Ling Huang
- College of Life Sciences, Ludong University, Yantai, Shandong, P.R. China
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Yu D, Zhang J, Li P, Zheng R, Shao C. Do cryptic species exist in Hoplobatrachus rugulosus? An examination using four nuclear genes, the cyt b gene and the complete MT genome. PLoS One 2015; 10:e0124825. [PMID: 25875761 PMCID: PMC4395372 DOI: 10.1371/journal.pone.0124825] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Accepted: 03/18/2015] [Indexed: 11/18/2022] Open
Abstract
he Chinese tiger frog Hoplobatrachus rugulosus is widely distributed in southern China, Malaysia, Myanmar, Thailand, and Vietnam. It is listed in Appendix II of CITES as the only Class II nationally-protected frog in China. The bred tiger frog known as the Thailand tiger frog, is also identified as H. rugulosus. Our analysis of the Cyt b gene showed high genetic divergence (13.8%) between wild and bred samples of tiger frog. Unexpected genetic divergence of the complete mt genome (14.0%) was also observed between wild and bred samples of tiger frog. Yet, the nuclear genes (NCX1, Rag1, Rhod, Tyr) showed little divergence between them. Despite this and their very similar morphology, the features of the mitochondrial genome including genetic divergence of other genes, different three-dimensional structures of ND5 proteins, and gene rearrangements indicate that H. rugulosus may be a cryptic species complex. Using Bayesian inference, maximum likelihood, and maximum parsimony analyses, Hoplobatrachus was resolved as a sister clade to Euphlyctis, and H. rugulosus (BT) as a sister clade to H. rugulosus (WT). We suggest that we should prevent Thailand tiger frogs (bred type) from escaping into wild environments lest they produce hybrids with Chinese tiger frogs (wild type).
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Affiliation(s)
- Danna Yu
- Institute of Ecology, Zhejiang Normal University, Jinhua, 321004, Zhejiang Province, China
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, 210023, Jiangsu Province, China
| | - Jiayong Zhang
- Institute of Ecology, Zhejiang Normal University, Jinhua, 321004, Zhejiang Province, China
- College of Chemistry and Life Science, Zhejiang Normal University, Jinhua, 321004, Zhejiang Province, China
| | - Peng Li
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, 210023, Jiangsu Province, China
| | - Rongquan Zheng
- Institute of Ecology, Zhejiang Normal University, Jinhua, 321004, Zhejiang Province, China
- Institute of Special Aquaculture Source, Zhejiang Normal University, Jinhua, 321004, Zhejiang Province, China
| | - Chen Shao
- College of Chemistry and Life Science, Zhejiang Normal University, Jinhua, 321004, Zhejiang Province, China
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125
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Xie XY, Huang GF, Li YT, Zhang YT, Chen SX. Complete mitochondrial genome of Acrossocheilus parallens (Cypriniformes, Barbinae). Mitochondrial DNA A DNA Mapp Seq Anal 2015; 27:3339-40. [PMID: 25714150 DOI: 10.3109/19401736.2015.1018212] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The omnivorous fish Acrossocheilus parallens (Cypriniformes, Barbinae) is endemic to China. In this paper, the complete mitochondrial genome sequence of A. parallens was firstly determined. The circle genome (16,592 bp) comprises 13 protein-coding genes, 22 tRNA genes, 2 rRNA genes and 1 control region. The overall base composition of A. parallens is 31.0% for A, 24.7% for T, 28.0% for C, and 16.3% for G, with a slight A + T bias of 55.7%. The termination-associated sequence and conserved sequence block domains were found in the control region. It has the typical vertebrate mitochondrial gene arrangement.
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Affiliation(s)
- Xiang Yun Xie
- a College of Animal Sciences, Fujian Agriculture and Forestry University , Fuzhou , P. R. China and
| | - Gu Fu Huang
- b College of Ocean and Earth Sciences, Xiamen University , Fujian , P. R. China
| | - Yu Ting Li
- a College of Animal Sciences, Fujian Agriculture and Forestry University , Fuzhou , P. R. China and
| | - Yu Ting Zhang
- b College of Ocean and Earth Sciences, Xiamen University , Fujian , P. R. China
| | - Shi Xi Chen
- b College of Ocean and Earth Sciences, Xiamen University , Fujian , P. R. China
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126
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Sun WL, Zhong W, Bao K, Liu HL, Ya-Han Y, Wang Z, Li GY. The complete mitochondrial genome of silver fox (Caniformia: Canidae). Mitochondrial DNA A DNA Mapp Seq Anal 2015; 27:3348-50. [PMID: 25714151 DOI: 10.3109/19401736.2015.1018216] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Silver fox is color variant of Vulpes vulpes. At present, there are few studies on phylogeny of Canidae and Caniformia. In this article, we determined and described the complete mitogenome of silver fox for the first time, which is 16,723 bp in length, containing 13 protein-coding genes, 2 rRNA genes, 22 tRNA genes, one origin of replication on the light-strand (OL) and a putative control region (CR). The overall base composition is 31.4% A, 27.9% T, 26.0% C, 14.7% G, respectively, with a AT bias (59.3%). Ten protein-coding genes use the initiation codon ATG while ND2, ND3 and ND5 use ATA. Most of them have TAA as the stop codon, except ND2 uses TAG, Cytb uses AGA, and COX3, ND3, ND4 use an incomplete stop codon TA. The information is expected to provide useful molecular data for further taxonomic and phylogenetic studies of Canidae and Caniformia.
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Affiliation(s)
- Wei-Li Sun
- a Institute of Special Animal and Plant Science, Chinese Academy of Agricultural Sciences (CAAS) , Changchun , P.R. China and.,b State Key Lab for Molecular Biology of Special Economic Animals , Changchun , P.R. China
| | - Wei Zhong
- a Institute of Special Animal and Plant Science, Chinese Academy of Agricultural Sciences (CAAS) , Changchun , P.R. China and.,b State Key Lab for Molecular Biology of Special Economic Animals , Changchun , P.R. China
| | - Kun Bao
- a Institute of Special Animal and Plant Science, Chinese Academy of Agricultural Sciences (CAAS) , Changchun , P.R. China and.,b State Key Lab for Molecular Biology of Special Economic Animals , Changchun , P.R. China
| | - Han-Lu Liu
- a Institute of Special Animal and Plant Science, Chinese Academy of Agricultural Sciences (CAAS) , Changchun , P.R. China and.,b State Key Lab for Molecular Biology of Special Economic Animals , Changchun , P.R. China
| | - Yang Ya-Han
- a Institute of Special Animal and Plant Science, Chinese Academy of Agricultural Sciences (CAAS) , Changchun , P.R. China and.,b State Key Lab for Molecular Biology of Special Economic Animals , Changchun , P.R. China
| | - Zhuo Wang
- a Institute of Special Animal and Plant Science, Chinese Academy of Agricultural Sciences (CAAS) , Changchun , P.R. China and.,b State Key Lab for Molecular Biology of Special Economic Animals , Changchun , P.R. China
| | - Guang-Yu Li
- a Institute of Special Animal and Plant Science, Chinese Academy of Agricultural Sciences (CAAS) , Changchun , P.R. China and.,b State Key Lab for Molecular Biology of Special Economic Animals , Changchun , P.R. China
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127
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Li X, Huang Y, Lei F. Comparative mitochondrial genomics and phylogenetic relationships of the Crossoptilon species (Phasianidae, Galliformes). BMC Genomics 2015; 16:42. [PMID: 25652939 PMCID: PMC4326528 DOI: 10.1186/s12864-015-1234-9] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Accepted: 01/12/2015] [Indexed: 12/02/2022] Open
Abstract
BACKGROUND Phasianidae is a family of Galliformes containing 38 genera and approximately 138 species, which is grouped into two tribes based on their morphological features, the Pheasants and Partridges. Several studies have attempted to reconstruct the phylogenetic relationships of the Phasianidae, but many questions still remain unaddressed, such as the taxonomic status and phylogenetic relationships among Crossoptilon species. The mitochondrial genome (mitogenome) has been extensively used to infer avian genetic diversification with reasonable resolution. Here, we sequenced the entire mitogenomes of three Crossoptilon species (C. harmani, C. mantchuricum and C. crossoptilon) to investigate their evolutionary relationship among Crossoptilon species. RESULTS The complete mitogenomes of C. harmani, C. mantchuricum and C. crossoptilon are 16682 bp, 16690 bp and 16680 bp in length, respectively, encoding a standard set of 13 protein-coding genes, 2 ribosomal RNA genes, 22 transfer RNA genes, and a putative control region. C. auritum and C. mantchuricum are more closely related genetically, whereas C. harmani is more closely related to C. crossoptilon. Crossoptilon has a closer relationship with Lophura, and the following phylogenetic relationship was reconstructed: ((Crossoptilon + Lophura) + (Phasianus + Chrysolophus)). The divergence time between the clades C. harmani-C. crossoptilon and C. mantchuricum-C. auritum is consistent with the uplift of the Tibetan Plateau during the Tertiary Pliocene. The Ka/Ks analysis showed that atp8 gene in the Crossoptilon likely experienced a strong selective pressure in adaptation to the plateau environment. CONCLUSIONS C. auritum with C. mantchuricum and C. harmani with C. crossoptilon form two pairs of sister groups. The genetic distance between C. harmani and C. crossoptilon is far less than the interspecific distance and is close to the intraspecific distance of Crossoptilon, indicating that C. harmani is much more closely related to C. crossoptilon. Our mito-phylogenomic analysis supports the monophyly of Crossoptilon and its closer relationship with Lophura. The uplift of Tibetan Plateau is suggested to impact the divergence between C. harmani-C. crossoptilon clade and C. mantchuricum-C. auritum clade during the Tertiary Pliocene. Atp8 gene in the Crossoptilon species might have experienced a strong selective pressure for adaptation to the plateau environment.
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Affiliation(s)
- Xuejuan Li
- Co-Innovation Center for Qinba Regions' Sustainable Development, School of Life Sciences, Shaanxi Normal University, Xi'an, 710062, China.
| | - Yuan Huang
- Co-Innovation Center for Qinba Regions' Sustainable Development, School of Life Sciences, Shaanxi Normal University, Xi'an, 710062, China.
| | - Fumin Lei
- Key Laboratory of the Zoological Systematics and Evolution, Institute of Zoology, the Chinese Academy of Sciences, Beijing, 100101, China.
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128
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Mu X, Liu Y, Lai M, Song H, Wang X, Hu Y, Luo J. Characterization of the Macropodus opercularis complete mitochondrial genome and family Channidae taxonomy using Illumina-based de novo transcriptome sequencing. Gene 2015; 559:189-95. [PMID: 25639355 DOI: 10.1016/j.gene.2015.01.056] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2014] [Revised: 01/19/2015] [Accepted: 01/28/2015] [Indexed: 11/16/2022]
Abstract
In this study, the complete mitochondrial genome of Macropodus opercularis was sequenced using Illumina-based de novo transcriptome technology and annotated using bioinformatic tools. The circular mitochondrial genome was 16,496bp in length and contained two ribosomal RNAs, 13 protein-coding genes, 22 transfer RNA genes, and the control region. The gene composition and order were similar to suborder Anabantoidei. Phylogenetic analyses using concatenated amino acid and nucleotide sequences of the 13 protein-coding genes with two different methods (Neighbor-joining and Bayesian analysis) both highly supported the close relationship of M. opercularis to M. ocellatus, consistent with previous classifications based on morphological and molecular studies. Furthermore, family Channidae and Parachanna insignis were clustered in the same clade. Our results supported the inclusion of family Channidae in suborder Channoidei. The complete mitochondrial genome of M. opercularis will provide genetic markers for better understanding species identification, population genetics and phylogeographics of freshwater fishes.
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Affiliation(s)
- Xidong Mu
- Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of Tropical & Subtropical Fishery Resource Application & Cultivation, Ministry of Agriculture, Guangzhou 510380, China
| | - Yi Liu
- Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of Tropical & Subtropical Fishery Resource Application & Cultivation, Ministry of Agriculture, Guangzhou 510380, China
| | - Mingxin Lai
- Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of Tropical & Subtropical Fishery Resource Application & Cultivation, Ministry of Agriculture, Guangzhou 510380, China
| | - Hongmei Song
- Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of Tropical & Subtropical Fishery Resource Application & Cultivation, Ministry of Agriculture, Guangzhou 510380, China
| | - Xuejie Wang
- Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of Tropical & Subtropical Fishery Resource Application & Cultivation, Ministry of Agriculture, Guangzhou 510380, China
| | - Yinchang Hu
- Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of Tropical & Subtropical Fishery Resource Application & Cultivation, Ministry of Agriculture, Guangzhou 510380, China
| | - Jianren Luo
- Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of Tropical & Subtropical Fishery Resource Application & Cultivation, Ministry of Agriculture, Guangzhou 510380, China.
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129
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Li W, Zhang XC, Zhao J, Shi Y, Zhu XP. Complete mitochondrial genome of Cuora trifasciata (Chinese three-striped box turtle), and a comparative analysis with other box turtles. Gene 2014; 555:169-77. [PMID: 25445281 DOI: 10.1016/j.gene.2014.10.060] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Revised: 10/22/2014] [Accepted: 10/31/2014] [Indexed: 11/26/2022]
Abstract
Cuora trifasciata has become one of the most critically endangered species in the world. The complete mitochondrial genome of C. trifasciata (Chinese three-striped box turtle) was determined in this study. Its mitochondrial genome is a 16,575-bp-long circular molecule that consists of 37 genes that are typically found in other vertebrates. And the basic characteristics of the C. trifasciata mitochondrial genome were also determined. Moreover, a comparison of C. trifasciata with Cuora cyclornata, Cuora pani and Cuora aurocapitata indicated that the four mitogenomics differed in length, codons, overlaps, 13 protein-coding genes (PCGs), ND3, rRNA genes, control region, and other aspects. Phylogenetic analysis with Bayesian inference and maximum likelihood based on 12 protein-coding genes of the genus Cuora indicated the phylogenetic position of C. trifasciata within Cuora. The phylogenetic analysis also showed that C. trifasciata from Vietnam and China formed separate monophyletic clades with different Cuora species. The results of nucleotide base compositions, protein-coding genes and phylogenetic analysis showed that C. trifasciata from these two countries may represent different Cuora species.
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Affiliation(s)
- Wei Li
- Key Laboratory of Tropical & Subtropical Fishery Resource Application & Cultivation of Ministry of Agriculture, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510380, PR China; College of Life Science and Fisheries, Shanghai Ocean University, Shanghai 201306, PR China
| | - Xin-Cheng Zhang
- Key Laboratory of Tropical & Subtropical Fishery Resource Application & Cultivation of Ministry of Agriculture, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510380, PR China
| | - Jian Zhao
- Key Laboratory of Tropical & Subtropical Fishery Resource Application & Cultivation of Ministry of Agriculture, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510380, PR China; College of Life Science and Fisheries, Shanghai Ocean University, Shanghai 201306, PR China
| | - Yan Shi
- Key Laboratory of Tropical & Subtropical Fishery Resource Application & Cultivation of Ministry of Agriculture, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510380, PR China
| | - Xin-Ping Zhu
- Key Laboratory of Tropical & Subtropical Fishery Resource Application & Cultivation of Ministry of Agriculture, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510380, PR China.
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130
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Kumazawa Y, Miura S, Yamada C, Hashiguchi Y. Gene rearrangements in gekkonid mitochondrial genomes with shuffling, loss, and reassignment of tRNA genes. BMC Genomics 2014; 15:930. [PMID: 25344428 PMCID: PMC4223735 DOI: 10.1186/1471-2164-15-930] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2014] [Accepted: 10/13/2014] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Vertebrate mitochondrial genomes (mitogenomes) are 16-18 kbp double-stranded circular DNAs that encode a set of 37 genes. The arrangement of these genes and the major noncoding region is relatively conserved through evolution although gene rearrangements have been described for diverse lineages. The tandem duplication-random loss model has been invoked to explain the mechanisms of most mitochondrial gene rearrangements. Previously reported mitogenomic sequences for geckos rarely included gene rearrangements, which we explore in the present study. RESULTS We determined seven new mitogenomic sequences from Gekkonidae using a high-throughput sequencing method. The Tropiocolotes tripolitanus mitogenome involves a tandem duplication of the gene block: tRNAArg, NADH dehydrogenase subunit 4L, and NADH dehydrogenase subunit 4. One of the duplicate copies for each protein-coding gene may be pseudogenized. A duplicate copy of the tRNAArg gene appears to have been converted to a tRNAGln gene by a C to T base substitution at the second anticodon position, although this gene may not be fully functional in protein synthesis. The Stenodactylus petrii mitogenome includes several tandem duplications of tRNALeu genes, as well as a translocation of the tRNAAla gene and a putative origin of light-strand replication within a tRNA gene cluster. Finally, the Uroplatus fimbriatus and U. ebenaui mitogenomes feature the apparent loss of the tRNAGlu gene from its original position. Uroplatus fimbriatus appears to retain a translocated tRNAGlu gene adjacent to the 5' end of the major noncoding region. CONCLUSIONS The present study describes several new mitochondrial gene rearrangements from Gekkonidae. The loss and reassignment of tRNA genes is not very common in vertebrate mitogenomes and our findings raise new questions as to how missing tRNAs are supplied and if the reassigned tRNA gene is fully functional. These new examples of mitochondrial gene rearrangements in geckos should broaden our understanding of the evolution of mitochondrial gene arrangements.
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Affiliation(s)
- Yoshinori Kumazawa
- Department of Information and Biological Sciences and Research Center for Biological Diversity, Graduate School of Natural Sciences, Nagoya City University, 1 Yamanohata, Mizuho-cho, Mizuho-ku, Nagoya 467-8501, Japan.
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131
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Lee JH, Kim DK. Microsatellite Instability of Nuclear and Mitochondrial DNAs in Gastric Carcinogenesis. Asian Pac J Cancer Prev 2014. [DOI: 10.7314/apjcp.2014.15.19.8027] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
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132
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Fonseca MM, Harris DJ, Posada D. The inversion of the Control Region in three mitogenomes provides further evidence for an asymmetric model of vertebrate mtDNA replication. PLoS One 2014; 9:e106654. [PMID: 25268704 PMCID: PMC4182315 DOI: 10.1371/journal.pone.0106654] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Accepted: 08/04/2014] [Indexed: 11/29/2022] Open
Abstract
Mitochondrial genomes are known to have a strong strand-specific compositional bias that is more pronounced at fourfold redundant sites of mtDNA protein-coding genes. This observation suggests that strand asymmetries, to a large extent, are caused by mutational asymmetric mechanisms. In vertebrate mitogenomes, replication and not transcription seems to play a major role in shaping compositional bias. Hence, one can better understand how mtDNA is replicated – a debated issue – through a detailed picture of mitochondrial genome evolution. Here, we analyzed the compositional bias (AT and GC skews) in protein-coding genes of almost 2,500 complete vertebrate mitogenomes. We were able to identify three fish mitogenomes with inverted AT/GC skew coupled with an inversion of the Control Region. These findings suggest that the vertebrate mitochondrial replication mechanism is asymmetric and may invert its polarity, with the leading-strand becoming the lagging-strand and vice-versa, without compromising mtDNA maintenance and expression. The inversion of the strand-specific compositional bias through the inversion of the Control Region is in agreement with the strand-displacement model but it is also compatible with the RITOLS model of mtDNA replication.
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Affiliation(s)
- Miguel M. Fonseca
- Department of Biochemistry, Genetics and Immunology, University of Vigo, Vigo, Spain
- CIBIO/InBIO, Research Center in Biodiversity and Genetic Resources, University of Porto, Vairão, Portugal
- * E-mail:
| | - D. James Harris
- CIBIO/InBIO, Research Center in Biodiversity and Genetic Resources, University of Porto, Vairão, Portugal
| | - David Posada
- Department of Biochemistry, Genetics and Immunology, University of Vigo, Vigo, Spain
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133
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Identification of species-specific nuclear insertions of mitochondrial DNA (numts) in gorillas and their potential as population genetic markers. Mol Phylogenet Evol 2014; 81:61-70. [PMID: 25194325 DOI: 10.1016/j.ympev.2014.08.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2013] [Revised: 05/31/2014] [Accepted: 08/18/2014] [Indexed: 12/12/2022]
Abstract
The first hyper-variable region (HV1) of the mitochondrial control region (MCR) has been widely used as a molecular tool in population genetics, but inadvertent amplification of nuclear translocated copies of mitochondrial DNA (numts) in gorillas has compromised the use of mitochondrial DNA in population genetic studies. At least three putative classes (I, II, III) of gorilla-specific HV1 MCR numts have been uncovered over the past decade. However, the number, size and location of numt loci in gorillas and other apes are completely unknown. Furthermore, little work to date has assessed the utility of numts as candidate population genetic markers. In the present study, we screened Bacterial Artificial Chromosome (BAC) genomic libraries in the chimpanzee and gorilla to compare patterns of mitochondrial-wide insertion in both taxa. We conducted an intensive BLAST search for numts in the gorilla genome and compared the prevalence of numt loci originating from the MCR with other great ape taxa. Additional gorilla-specific MCR numts were retrieved either through BAC library screens or using an anchored-PCR (A-PCR) amplification using genomic DNA from five unrelated gorillas. Locus-specific primers were designed to identify numt insertional polymorphisms and evaluate their potential as population genetic markers. Mitochondrial-wide surveys of chimpanzee and gorilla BACs showed that the number of numts does not differ between these two taxa. However, MCR numts are more abundant in chimpanzees than in other great apes. We identified and mapped 67 putative gorilla-specific numts, including two that contain the entire HV1 domain, cluster with sequences from two numt classes (I, IIb) and will likely co-amplify with mitochondrial sequences using most published HV1 primers. However, phylogenetic analysis coupled with post-hoc analysis of mitochondrial variation can successfully differentiate nuclear sequences. Insertional polymorphisms were evident in three out of five numts examined, indicating their potential utility as molecular markers. Taken together, these findings demonstrate the potentially powerful insight that numts could make in uncovering population history in gorillas and other mammals.
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134
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Merker S, Thomas S, Völker E, Perwitasari-Farajallah D, Feldmeyer B, Streit B, Pfenninger M. Control region length dynamics potentially drives amino acid evolution in tarsier mitochondrial genomes. J Mol Evol 2014; 79:40-51. [PMID: 25008552 DOI: 10.1007/s00239-014-9631-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2014] [Accepted: 06/19/2014] [Indexed: 11/25/2022]
Abstract
Patterns and processes of molecular evolution critically influence inferences in phylogeny and phylogeography. Within primates, a shift in evolutionary rates has been identified as the rationale for contrasting findings from mitochondrial and nuclear DNA studies as to the position of Tarsius. While the latter now seems settled, we sequenced complete mitochondrial genomes of three Sulawesi tarsiers (Tarsius dentatus, T. lariang, and T. wallacei) and analyzed substitution rates among tarsiers and other primates to infer driving processes of molecular evolution. We found substantial length polymorphism of the D-loop within tarsier individuals, but little variation of predominant lengths among them, regardless of species. Length variation was due to repetitive elements in the CSB domain-minisatellite motifs of 35 bp length and microsatellite motifs of 6 bp length. Amino acid evolutionary rates were second highest among major primate taxa relative to nucleotide substitution rates. We observed many radical possibly function-altering amino acid changes that were rarely driven by positive selection and thus potentially slightly deleterious or neutral. We hypothesize that the observed pattern of an increased amino acid evolutionary rate in tarsier mitochondrial genomes may be caused by hitchhiking of slightly deleterious mutations with favored D-loop length variants selected for maximizing replication success within the cell or the mitochondrion.
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Affiliation(s)
- Stefan Merker
- Department of Zoology, State Museum of Natural History Stuttgart, Rosenstein 1, 70191, Stuttgart, Germany,
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135
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GC skew and mitochondrial origins of replication. Mitochondrion 2014; 17:56-66. [DOI: 10.1016/j.mito.2014.05.009] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2013] [Revised: 05/09/2014] [Accepted: 05/28/2014] [Indexed: 11/18/2022]
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136
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Liu T, Jin X, Wang R, Xu T. Complete sequence of the mitochondrial genome of Odontamblyopus rubicundus (Perciformes: Gobiidae): genome characterization and phylogenetic analysis. J Genet 2014; 92:423-32. [PMID: 24371164 DOI: 10.1007/s12041-013-0283-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Odontamblyopus rubicundus is a species of gobiid fishes, inhabits muddy-bottomed coastal waters. In this paper, the first complete mitochondrial genome sequence of O. rubicundus is reported. The complete mitochondrial genome sequence is 17119 bp in length and contains 13 protein-coding genes, two rRNA genes, 22 tRNA genes, a control region and an L-strand origin as in other teleosts. Most mitochondrial genes are encoded on H-strand except for ND6 and seven tRNA genes. Some overlaps occur in protein-coding genes and tRNAs ranging from 1 to 7 bp. The possibly nonfunctional L-strand origin folded into a typical stem-loop secondary structure and a conserved motif (5'-GCCGG-3') was found at the base of the stem within the tRNACys gene. The TAS, CSB-2 and CSB-3 could be detected in the control region. However, in contrast to most of other fishes, the central conserved sequence block domain and the CSB-1 could not be recognized in O. rubicundus, which is consistent with Acanthogobius hasta (Gobiidae). In addition, phylogenetic analyses based on different sequences of species of Gobiidae and different methods showed that the classification of O. rubicundus into Odontamblyopus due to morphology is debatable.
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Affiliation(s)
- Tianxing Liu
- Laboratory for Marine Living Resources and Molecular Engineering, College of Marine Science, Zhejiang Ocean University, Zhoushan 316000, People's Republic of China.
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137
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Mao X, Dong J, Hua P, He G, Zhang S, Rossiter SJ. Heteroplasmy and ancient translocation of mitochondrial DNA to the nucleus in the Chinese Horseshoe Bat (Rhinolophus sinicus) complex. PLoS One 2014; 9:e98035. [PMID: 24842827 PMCID: PMC4026475 DOI: 10.1371/journal.pone.0098035] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Accepted: 04/28/2014] [Indexed: 11/18/2022] Open
Abstract
The utility and reliability of mitochondrial DNA sequences in phylogenetic and phylogeographic studies may be compromised by widespread and undetected nuclear mitochondrial copies (numts) as well as heteroplasmy within individuals. Both numts and heteroplasmy are likely to be common across diverse taxa yet few studies have characterised their frequencies and variation at the intra-specific level. Here we report the presence of both numts and heteroplasmy in the mitochondrial control region of the Chinese horseshoe bat Rhinolophus sinicus. In total we generated 123 sequences from 18 bats, which contained two different numt clades (i.e. Numt-1 and Numt-2) and one mtDNA clade. The sequence divergence between Numt-1 and Numt-2 was 16.8% and each numt type was found in all four R. sinicus taxa, suggesting either two ancient translocations of mitochondrial DNA into the nucleus from the same source taxon, or a single translocation from different source taxa that occurred before the split of R. sinicus into different lineages. Within the mtDNA clade, phylogenetic relationships among the four taxa of R. sinicus were similar to those seen in previous results. Based on PCR comparisons, heteroplasmy was inferred between almost all individuals of R. sinicus with respect to sequence variation. Consistent with introgression of mtDNA between Central sinicus and septentrionalis, individuals from these two taxa exhibited similar signatures of repeated sequences in the control region. Our study highlights the importance of testing for the presence of numts and heteroplasmy when applying mtDNA markers to phylogenetic studies.
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Affiliation(s)
- Xiuguang Mao
- Institute of Molecular Ecology and Evolution, Institute for Advanced Studies in Multidisciplinary Science and Technology, East China Normal University, Shanghai, China
- School of Biological and Chemical Sciences, Queen Mary University of London, London, United Kingdom
| | - Ji Dong
- Institute of Molecular Ecology and Evolution, Institute for Advanced Studies in Multidisciplinary Science and Technology, East China Normal University, Shanghai, China
| | - Panyu Hua
- Institute of Molecular Ecology and Evolution, Institute for Advanced Studies in Multidisciplinary Science and Technology, East China Normal University, Shanghai, China
| | - Guimei He
- Institute of Molecular Ecology and Evolution, Institute for Advanced Studies in Multidisciplinary Science and Technology, East China Normal University, Shanghai, China
| | - Shuyi Zhang
- Institute of Molecular Ecology and Evolution, Institute for Advanced Studies in Multidisciplinary Science and Technology, East China Normal University, Shanghai, China
| | - Stephen J. Rossiter
- School of Biological and Chemical Sciences, Queen Mary University of London, London, United Kingdom
- * E-mail:
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138
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Knoll N, Jarick I, Volckmar AL, Klingenspor M, Illig T, Grallert H, Gieger C, Wichmann HE, Peters A, Wiegand S, Biebermann H, Fischer-Posovszky P, Wabitsch M, Völzke H, Nauck M, Teumer A, Rosskopf D, Rimmbach C, Schreiber S, Jacobs G, Lieb W, Franke A, Hebebrand J, Hinney A. Mitochondrial DNA variants in obesity. PLoS One 2014; 9:e94882. [PMID: 24788344 PMCID: PMC4008486 DOI: 10.1371/journal.pone.0094882] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Accepted: 03/19/2014] [Indexed: 12/28/2022] Open
Abstract
Heritability estimates for body mass index (BMI) variation are high. For mothers and their offspring higher BMI correlations have been described than for fathers. Variation(s) in the exclusively maternally inherited mitochondrial DNA (mtDNA) might contribute to this parental effect. Thirty-two to 40 mtDNA single nucleotide polymorphisms (SNPs) were available from genome-wide association study SNP arrays (Affymetrix 6.0). For discovery, we analyzed association in a case-control (CC) sample of 1,158 extremely obese children and adolescents and 435 lean adult controls. For independent confirmation, 7,014 population-based adults were analyzed as CC sample of n = 1,697 obese cases (BMI ≥ 30 kg/m2) and n = 2,373 normal weight and lean controls (BMI<25 kg/m2). SNPs were analyzed as single SNPs and haplogroups determined by HaploGrep. Fisher's two-sided exact test was used for association testing. Moreover, the D-loop was re-sequenced (Sanger) in 192 extremely obese children and adolescents and 192 lean adult controls. Association testing of detected variants was performed using Fisher's two-sided exact test. For discovery, nominal association with obesity was found for the frequent allele G of m.8994G/A (rs28358887, p = 0.002) located in ATP6. Haplogroup W was nominally overrepresented in the controls (p = 0.039). These findings could not be confirmed independently. For two of the 252 identified D-loop variants nominal association was detected (m.16292C/T, p = 0.007, m.16189T/C, p = 0.048). Only eight controls carried the m.16292T allele, five of whom belonged to haplogroup W that was initially enriched among these controls. m.16189T/C might create an uninterrupted poly-C tract located near a regulatory element involved in replication of mtDNA. Though follow-up of some D-loop variants still is conceivable, our hypothesis of a contribution of variation in the exclusively maternally inherited mtDNA to the observed larger correlations for BMI between mothers and their offspring could not be substantiated by the findings of the present study.
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Affiliation(s)
- Nadja Knoll
- Department of Child and Adolescent Psychiatry, University of Duisburg-Essen, Essen, Germany
| | - Ivonne Jarick
- Institute of Medical Biometry and Epidemiology, Philipps-University of Marburg, Marburg, Germany
| | - Anna-Lena Volckmar
- Department of Child and Adolescent Psychiatry, University of Duisburg-Essen, Essen, Germany
| | - Martin Klingenspor
- Molecular Nutritional Medicine, Technical University of Munich, Else Kröner-Fresenius Center, Freising-Weihenstephan, Germany
| | - Thomas Illig
- Research Unit of Molecular Epidemiology, Helmholtz Center Munich – German Research Center for Environmental Health, Neuherberg, Germany
- Hannover Unified Biobank, Hannover Medical School, Hannover, Germany
| | - Harald Grallert
- Research Unit of Molecular Epidemiology, Helmholtz Center Munich – German Research Center for Environmental Health, Neuherberg, Germany
- Institute of Epidemiology II, Helmholtz Center Munich – German Research Center for Environmental Health, Neuherberg, Germany
- German Center for Diabetes Research, Neuherberg, Germany
| | - Christian Gieger
- Institute of Genetic Epidemiology, Helmholtz Center Munich – German Research Center for Environmental Health, Neuherberg, Germany
| | - Heinz-Erich Wichmann
- Institute of Epidemiology I, Helmholtz Center Munich – German Research Center for Environmental Health, Neuherberg, Germany, Neuherberg, Germany
- Institute of Medical Informatics, Biometry, and Epidemiology, Chair of Epidemiology, Ludwig-Maximilians-Universität, Munich, Germany
- Munich University Hospital, Campus Grosshadern, Munich, Germany
| | - Annette Peters
- Institute of Epidemiology II, Helmholtz Center Munich – German Research Center for Environmental Health, Neuherberg, Germany
| | - Susanna Wiegand
- Institute of Experimental Pediatric Endocrinology, Charité Berlin, Germany
| | - Heike Biebermann
- Institute of Experimental Pediatric Endocrinology, Charité Berlin, Germany
| | - Pamela Fischer-Posovszky
- Division of Pediatric Endocrinology and Diabetes, Department of Children and Adolescent Medicine, University of Ulm University Medical Center, Ulm, Germany
| | - Martin Wabitsch
- Division of Pediatric Endocrinology and Diabetes, Department of Children and Adolescent Medicine, University of Ulm University Medical Center, Ulm, Germany
| | - Henry Völzke
- Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Matthias Nauck
- Institute for Clinical Chemistry and Laboratory Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Alexander Teumer
- Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Dieter Rosskopf
- Institute for Pharmacology, University Medicine Greifswald, Greifswald, Greifswald, Germany
| | - Christian Rimmbach
- Institute for Pharmacology, University Medicine Greifswald, Greifswald, Greifswald, Germany
| | - Stefan Schreiber
- Institute of Clinical Molecular Biology, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - Gunnar Jacobs
- Institute of Epidemiology and Biobank popgen, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - Wolfgang Lieb
- Institute of Epidemiology and Biobank popgen, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - Andre Franke
- Institute of Clinical Molecular Biology, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - Johannes Hebebrand
- Department of Child and Adolescent Psychiatry, University of Duisburg-Essen, Essen, Germany
| | - Anke Hinney
- Department of Child and Adolescent Psychiatry, University of Duisburg-Essen, Essen, Germany
- * E-mail:
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139
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Yan S, Wang M, Yang C, Yang T. Complete mitochondrial genome of the orange-spotted spinefoot Siganus guttatus (Perciformes, Siganidae). Mitochondrial DNA A DNA Mapp Seq Anal 2014; 27:555-6. [PMID: 24708117 DOI: 10.3109/19401736.2014.905855] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The complete mitochondrial genome of the orange-spotted spinefoot Siganus guttatus (Perciformes, Siganidae) is presented in this paper. The entire sequence, 16,505 bp in length, is comprised of 13 protein-coding genes, 22 tRNA genes, 2 rRNA genes and 1 control region. Structurally, the composition and order of genes are same as those found in other rabbitfishes. Except ND6 and 8 tRNA, all other mitochondrial genes were encoded on the heavy strand. Overall base compositions of mitogenome are 29.3% of A, 29.3% of C, 25.7% of T, and 15.7% of G, showing an obvious anti-G bias which was commonly found in fishes. Three conserved sequence blocks (CSB-1, CSB-2 and CSB-3) and long series of di- and mono-nucleotide microsatellite repeats in 3' end are observed in the putative control region. The complete mitogenome sequence of S. guttatus could provide useful information for further phylogenetic and population genetic studies.
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Affiliation(s)
- Shuai Yan
- a State Key Laboratory of Biocontrol, Key Laboratory of Biodiversity Dynamics and Conservation of Guangdong Higher Education Institutes and Center for Parasitic Organisms , School of Life Sciences, Sun Yat-sen University , Guangzhou , P.R. China and
| | - Ming Wang
- a State Key Laboratory of Biocontrol, Key Laboratory of Biodiversity Dynamics and Conservation of Guangdong Higher Education Institutes and Center for Parasitic Organisms , School of Life Sciences, Sun Yat-sen University , Guangzhou , P.R. China and.,b Nansha Entry-Exit Inspection and Quarantine Bureau , Guangzhou , P.R. China
| | - Chaopin Yang
- a State Key Laboratory of Biocontrol, Key Laboratory of Biodiversity Dynamics and Conservation of Guangdong Higher Education Institutes and Center for Parasitic Organisms , School of Life Sciences, Sun Yat-sen University , Guangzhou , P.R. China and
| | - Tingbao Yang
- a State Key Laboratory of Biocontrol, Key Laboratory of Biodiversity Dynamics and Conservation of Guangdong Higher Education Institutes and Center for Parasitic Organisms , School of Life Sciences, Sun Yat-sen University , Guangzhou , P.R. China and
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140
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In D-loop: 40 years of mitochondrial 7S DNA. Exp Gerontol 2014; 56:175-81. [PMID: 24709344 DOI: 10.1016/j.exger.2014.03.027] [Citation(s) in RCA: 172] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Revised: 03/27/2014] [Accepted: 03/28/2014] [Indexed: 11/23/2022]
Abstract
Given the tiny size of the mammalian mitochondrial genome, at only 16.5 kb, it is often surprising how little we know about some of its molecular features, and the molecular mechanisms governing its maintenance. One such conundrum is the biogenesis and function of the mitochondrial displacement loop (D-loop). The mitochondrial D-loop is a triple-stranded region found in the major non-coding region (NCR) of many mitochondrial genomes, and is formed by stable incorporation of a third, short DNA strand known as 7S DNA. In this article we review the current affairs regarding the main features of the D-loop structure, the diverse frequency of D-loops in the mtDNAs of various species and tissues, and also the mechanisms of its synthesis and turnover. This is followed by an account of the possible functions of the mitochondrial D-loop that have been proposed over the last four decades. In the last section, we discuss the potential links of the D-loop with mammalian ageing.
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141
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Dool SE, Puechmaille SJ, Dietz C, Juste J, Ibáñez C, Hulva P, Roué SG, Petit EJ, Jones G, Russo D, Toffoli R, Viglino A, Martinoli A, Rossiter SJ, Teeling EC. Phylogeography and postglacial recolonization of Europe by Rhinolophus hipposideros: evidence from multiple genetic markers. Mol Ecol 2014; 22:4055-70. [PMID: 23889545 DOI: 10.1111/mec.12373] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2012] [Revised: 04/23/2013] [Accepted: 04/25/2013] [Indexed: 01/03/2023]
Abstract
The demographic history of Rhinolophus hipposideros (lesser horseshoe bat) was reconstructed across its European, North African and Middle-Eastern distribution prior to, during and following the most recent glaciations by generating and analysing a multimarker data set. This data set consisted of an X-linked nuclear intron (Bgn; 543 bp), mitochondrial DNA (cytb-tRNA-control region; 1630 bp) and eight variable microsatellite loci for up to 373 individuals from 86 localities. Using this data set of diverse markers, it was possible to determine the species' demography at three temporal stages. Nuclear intron data revealed early colonization into Europe from the east, which pre-dates the Quaternary glaciations. The mtDNA data supported multiple glacial refugia across the Mediterranean, the largest of which were found in the Ibero-Maghreb region and an eastern location (Anatolia/Middle East)-that were used by R. hipposideros during the most recent glacial cycles. Finally, microsatellites provided the most recent information on these species' movements since the Last Glacial Maximum and suggested that lineages that had diverged into glacial refugia, such as in the Ibero-Maghreb region, have remained isolated. These findings should be used to inform future conservation management strategies for R. hipposideros and show the power of using a multimarker data set for phylogeographic studies.
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Affiliation(s)
- Serena E Dool
- School of Biology and Environmental Science, University College Dublin, Belfield, Dublin 4, Ireland
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142
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Zhou X, Yu Y, Li Y, Wu J, Zhang X, Guo X, Wang W. Comparative analysis of mitochondrial genomes in distinct nuclear ploidy loach Misgurnus anguillicaudatus and its implications for polyploidy evolution. PLoS One 2014; 9:e92033. [PMID: 24643051 PMCID: PMC3958399 DOI: 10.1371/journal.pone.0092033] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Accepted: 02/17/2014] [Indexed: 01/23/2023] Open
Abstract
Misgurnus anguillicaudatus has several natural ploidy types. To investigate whether nuclear polyploidy have an impact on mitochondrial DNA (mtDNA), the complete mitochondrial genomes (mitogenomes) of five distinct ploidy M. anguillicaudatus (natural diploid, triploid, tetraploid, pentaploid and hexaploid), which were collected in central China, were sequenced and analyzed. The five mitogenomes share the same gene arrangement and have similar gene size, base composition and codon usage pattern. The most variable regions of the mitogenome were the protein-coding genes, especially the ND4L (5.39% mutation rate). Most variations occurred in tetraploids. The phylogenetic tree showed that the tetraploid M. anguillicaudatus separated early from other ploidy loaches. Meanwhile, the mitogenomes from pentaploids, and hexaploids have the closest phylogenetic relations, but far from that of tetraploids, implying that pentaploids and hexaploids could not be formed from tetraploids, possibly from the diploids and triploids. The genus Misgurnus species were divided into two divergent inter-genus clades, and the five ploidy M. anguillicaudatus were monophyletic, which support the hypotheses about the mitochondrial introgression in loach species.
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Affiliation(s)
- Xiaoyun Zhou
- College of Fisheries, Key Lab of Freshwater Animal Breeding, Ministry of Agriculture, Huazhong Agricultural University, Freshwater Aquaculture Collaborative Innovation Center of Hubei Province, Wuhan, P.R. China
| | - Yongyao Yu
- College of Fisheries, Key Lab of Freshwater Animal Breeding, Ministry of Agriculture, Huazhong Agricultural University, Freshwater Aquaculture Collaborative Innovation Center of Hubei Province, Wuhan, P.R. China
| | - Yanhe Li
- College of Fisheries, Key Lab of Freshwater Animal Breeding, Ministry of Agriculture, Huazhong Agricultural University, Freshwater Aquaculture Collaborative Innovation Center of Hubei Province, Wuhan, P.R. China
| | - Junjie Wu
- College of Fisheries, Key Lab of Freshwater Animal Breeding, Ministry of Agriculture, Huazhong Agricultural University, Freshwater Aquaculture Collaborative Innovation Center of Hubei Province, Wuhan, P.R. China
| | - Xiujie Zhang
- College of Fisheries, Key Lab of Freshwater Animal Breeding, Ministry of Agriculture, Huazhong Agricultural University, Freshwater Aquaculture Collaborative Innovation Center of Hubei Province, Wuhan, P.R. China
| | - Xianwu Guo
- Laboratorio de Biomedicina Molecular, Centro de Biotecnología Genómica, Instituto Politécnico Nacional, Boulevard del Maestro esquina Elías Piña, Colonia Narciso Mendoza, Tamaulipas, Mexico
| | - Weimin Wang
- College of Fisheries, Key Lab of Freshwater Animal Breeding, Ministry of Agriculture, Huazhong Agricultural University, Freshwater Aquaculture Collaborative Innovation Center of Hubei Province, Wuhan, P.R. China
- * E-mail:
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143
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Li M, Zou K. Complete mitochondrial genome of the Bloch's gizzard shad Nematalosa nasus (Clupeiformes: Clupeidae). MITOCHONDRIAL DNA 2014; 25:52-53. [PMID: 23841597 DOI: 10.3109/19401736.2013.782021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The complete mitochondrial genome sequence of Nematalosa nasus was determined in this paper. The entire sequence was 16,674 bp in length and the overall base compositions were 26.5% of A, 28.4% of C, 25.4% of T and 19.7% of G. The mitogenome contained 13 protein-coding genes, 22 tRNA genes, 2 rRNA genes and two non-coding regions (the control region and the light strand replication origin). Gene arrangement was similar to that observed in most other vertebrates. Except for the ND6 genes and eight tRNA genes, all other genes were encoded on the heavy strand. Within the control region, the extended termination associated sequence was identified, as well as four central conserved sequence blocks (CSB-F, CSB-E, CSB-D and CSB-C) and three conserved sequence blocks (CSB-1, CSB-2 and CSB-3).
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Affiliation(s)
- Min Li
- Scientific Observing and Experimental Station of South China Sea Fishery Resources and Environments, Ministry of Agriculture, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Science , Guangzhou , P.R. China and
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144
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Zhang YT, Ghaffar MA, Li Z, Chen W, Chen SX, Hong WS. Complete mitochondrial genome of the mudskipper Boleophthalmus boddarti (Perciformes, Gobiidae). Mitochondrial DNA A DNA Mapp Seq Anal 2014; 27:62-4. [PMID: 24438254 DOI: 10.3109/19401736.2013.873901] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The Boddart's goggle-eyed mudskipper, Boleophthalmus boddarti (Perciformes, Gobiidae) is an amphibious fish, inhabiting brackish waters of estuaries and builds burrows in soft mud along the intertidal zone. In this paper, the complete mitochondrial genome sequence of B. boddarti was firstly determined. The circle genome (16,727 bp) comprises 13 protein-coding genes, 22 tRNA genes, 2 rRNA genes and 1 control region. The overall base composition of B. boddarti is 29.1% for C, 28.9% for A, 25.9% for T, and 16.0% for G, with a slight A + T bias of 54.8%. The termination-associated sequence, conserved sequence block domains, and a 131-bp tandem repeat were found in the control region. It has the typical vertebrate mitochondrial gene arrangement.
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Affiliation(s)
- Yu Ting Zhang
- a College of Ocean and Earth Sciences, Xiamen University , Fujian , PR China and
| | - Mazlan Abd Ghaffar
- b School of Environmental Studies and Natural Resource Sciences, University Kebangsaan , Malaysia
| | - Zhe Li
- a College of Ocean and Earth Sciences, Xiamen University , Fujian , PR China and
| | - Wei Chen
- a College of Ocean and Earth Sciences, Xiamen University , Fujian , PR China and
| | - Shi Xi Chen
- a College of Ocean and Earth Sciences, Xiamen University , Fujian , PR China and
| | - Wan Shu Hong
- a College of Ocean and Earth Sciences, Xiamen University , Fujian , PR China and
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145
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Wan Y, Zhou CH, Ouyang S, Huang XC, Zhan Y, Zhou P, Rong J, Wu XP. Genetic diversity analysis of mitochondrial DNA control region in artificially propagated Chinese sucker Myxocyprinus asiaticus. MITOCHONDRIAL DNA 2014; 26:514-9. [PMID: 24409897 DOI: 10.3109/19401736.2013.861424] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The genetic diversity of the three major artificially propagated populations of Chinese sucker, an endangered freshwater fish species, was investigated using the sequences of mitochondrial DNA (mtDNA) control regions. Among the 89 individuals tested, 66 variable sites (7.26%) and 10 haplotypes were detected (Haplotype diversity Hd = 0.805, Nucleotide diversity π = 0.0287). In general, genetic diversity was lower in artificially propagated populations than in wild populations. This reduction in genetic diversity may be due to population bottlenecks, genetic drift and human selection. A stepping-stone pattern of gene flow was detected in the populations studied, showing much higher gene flow between neighbouring populations. To increase the genetic diversity, wild lineages should be introduced, and more lineages should be shared among artificially propagated populations.
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Affiliation(s)
- Yuan Wan
- Center for Watershed Ecology, Institute of Life Science, Nanchang University , Nanchang , China
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146
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Chen L, Zhang H, Zhang J, Zhao C, Sha W. The complete mitochondrial genome of Cuon alpinus lepturus. ACTA ACUST UNITED AC 2014; 26:767-8. [PMID: 24397760 DOI: 10.3109/19401736.2013.855742] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The complete mitochondrial genome of a female Chinese dhole (Cuon alpinus lepturus) was sequenced for the first time. It contains 13 protein-coding genes, 2 rRNA genes, 22 tRNA genes and 1 control region.
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Affiliation(s)
- Lei Chen
- a College of Life Science, Qufu Normal University , Qufu , China
| | - Honghai Zhang
- a College of Life Science, Qufu Normal University , Qufu , China
| | - Jin Zhang
- a College of Life Science, Qufu Normal University , Qufu , China
| | - Chao Zhao
- a College of Life Science, Qufu Normal University , Qufu , China
| | - Weilai Sha
- a College of Life Science, Qufu Normal University , Qufu , China
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147
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Bellizzi D, D'Aquila P, Scafone T, Giordano M, Riso V, Riccio A, Passarino G. The control region of mitochondrial DNA shows an unusual CpG and non-CpG methylation pattern. DNA Res 2013; 20:537-47. [PMID: 23804556 PMCID: PMC3859322 DOI: 10.1093/dnares/dst029] [Citation(s) in RCA: 195] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2012] [Accepted: 05/30/2013] [Indexed: 11/23/2022] Open
Abstract
DNA methylation is a common epigenetic modification of the mammalian genome. Conflicting data regarding the possible presence of methylated cytosines within mitochondrial DNA (mtDNA) have been reported. To clarify this point, we analysed the methylation status of mtDNA control region (D-loop) on human and murine DNA samples from blood and cultured cells by bisulphite sequencing and methylated/hydroxymethylated DNA immunoprecipitation assays. We found methylated and hydroxymethylated cytosines in the L-strand of all samples analysed. MtDNA methylation particularly occurs within non-C-phosphate-G (non-CpG) nucleotides, mainly in the promoter region of the heavy strand and in conserved sequence blocks, suggesting its involvement in regulating mtDNA replication and/or transcription. We observed DNA methyltransferases within the mitochondria, but the inactivation of Dnmt1, Dnmt3a, and Dnmt3b in mouse embryonic stem (ES) cells results in a reduction of the CpG methylation, while the non-CpG methylation shows to be not affected. This suggests that D-loop epigenetic modification is only partially established by these enzymes. Our data show that DNA methylation occurs in the mtDNA control region of mammals, not only at symmetrical CpG dinucleotides, typical of nuclear genome, but in a peculiar non-CpG pattern previously reported for plants and fungi. The molecular mechanisms responsible for this pattern remain an open question.
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Affiliation(s)
- Dina Bellizzi
- Department of Cell Biology, University of Calabria, Rende 87036, Italy
| | - Patrizia D'Aquila
- Department of Cell Biology, University of Calabria, Rende 87036, Italy
| | - Teresa Scafone
- Department of Cell Biology, University of Calabria, Rende 87036, Italy
| | - Marco Giordano
- Department of Cell Biology, University of Calabria, Rende 87036, Italy
| | - Vincenzo Riso
- Institute of Genetics and Biophysics—Adriano Buzzati Traverso, Napoli 80131, Italy
| | - Andrea Riccio
- Institute of Genetics and Biophysics—Adriano Buzzati Traverso, Napoli 80131, Italy
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148
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Damas J, Samuels DC, Carneiro J, Amorim A, Pereira F. Mitochondrial DNA rearrangements in health and disease--a comprehensive study. Hum Mutat 2013; 35:1-14. [PMID: 24115352 DOI: 10.1002/humu.22452] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2013] [Accepted: 09/19/2013] [Indexed: 12/12/2022]
Abstract
Mitochondrial DNA (mtDNA) rearrangements cause a wide variety of highly debilitating and often fatal disorders and have been implicated in aging and age-associated disease. Here, we present a meta-analytical study of mtDNA deletions (n = 730) and partial duplications (n = 37) using information from more than 300 studies published over the last 30 years. We show that both classes of mtDNA rearrangements are unequally distributed among disorders and their breakpoints have different genomic locations. We also demonstrate that 100% of cases with sporadic mtDNA deletions and 97.3% with duplications have no breakpoints in the 16,071 breakage hotspot site, in contrast with deletions from healthy and aged tissues. Notably, most deletions removing a section of the D-loop are found in tumors. Deleted mtDNA molecules lacking the origin of L-strand replication (O(L)) represent only 9.5% of all reported cases, whereas extra origins of replication occur in all duplications. As previously shown for deletions, imperfect stretches of homology are common in duplication breakpoints. Finally, we provide a dedicated Website with detailed information on deleted/duplicated mtDNA regions to facilitate the design of efficient methods for identification and screening of rearranged mitochondrial genomes (available at http://www.portugene.com/mtDNArearrangements.html).
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Affiliation(s)
- Joana Damas
- Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP), Rua Dr. Roberto Frias s/n, Porto, Portugal
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149
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Liu W, Yao YF, Yu Q, Ni QY, Zhang MW, Yang JD, Mai MM, Xu HL. Genetic variation and phylogenetic relationship between three serow species of the genus Capricornis based on the complete mitochondrial DNA control region sequences. Mol Biol Rep 2013; 40:6793-802. [PMID: 24057256 DOI: 10.1007/s11033-013-2796-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2013] [Accepted: 09/14/2013] [Indexed: 11/24/2022]
Abstract
The molecular evidence of phylogenetic status regarding the Formosan serow (Capricornis swinhoei) is not robust and little is known about the genetic diversity of the Sumatran serow (Capricornis sumatraensis), which partly is due to the hardness in sample collection. Here we determined the sequences of the complete mitochondrial DNA control region (1,014 bp) of 19 Sumatran-serow individuals. Nine new haplotypes were defined based on 78 variable sites. Combined analysis with other 32 haplotypes downloaded from the public database, including 1 Sumatran-serow, 11 Formosan-serow and 20 Japanese-serow (Capricornis crispus) haplotypes, a relatively high level of nucleotide diversity was first observed in Sumatran serow (π = 0.0249). By comparative analysis with structural consensus sequences from other mammals, we have identified central, left and right domains and depicted the putative functional structure, including extend termination associated sequences and conserve sequence blocks, in mtDNA control region. The alignment of mtDNA control region revealed that both Sumatran and Japanese serow have two tandem repeats (TRs), but three TRs in Formosan serow. Phylogenetic analyses revealed that the Formosan serow is distinct species with the Japanese serow, but a sister group with the Sumatran serow. The divergence time estimated among three serow species revealed that Pleistocene climate changes and the uplift of Qinghai-Tibetan plateau might play an important role in the genetic differentiation of the serows. These results mainly provide the convinced evidence on the genetic relationship between three serow species.
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Affiliation(s)
- Wei Liu
- College of Animal Science and Technology, Sichuan Agricultural University, Ya'an, 625014, People's Republic of China
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150
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Oh DJ, Han SH, Kim BS, Yang KS, Kim TW, Koo KS, Chang MH, Oh HS, Jung YH. Mitochondrial genome sequence of Sibynophis chinensis (Squamata, Colubridae). ACTA ACUST UNITED AC 2013; 26:315-6. [PMID: 24006866 DOI: 10.3109/19401736.2013.830290] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The complete mitochondrial (mt) genome of the Chinese many-toothed snake, Sibynophis chinensis, was sequenced and found to be 17,163 bp in length. The arrangement of 13 protein-coding genes, tRNAs and rRNAs was identical to that of other common snake mt genomes. The mt protein-coding genes of S. chinensis utilized ATA, ATG, ATA and GTG as initiation codons and AGA, AGG, TAA, TAG and T as termination codons. Among three tRNA clusters (LQM, WANCY and HSL), LQM was found instead of IQM, which is common in other vertebrates. We also identified two control regions that contained several conserved elements known as conserved sequence blocks and termination-associated sequences related to mt replication and transcription.
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Affiliation(s)
- Dae-Ju Oh
- Jeju Biodiversity Research Institute, Jeju Technopark , Seogwipo , Republic of Korea
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