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Izquierdo-Rico MJ, Moros-Nicolás C, Pérez-Crespo M, Laguna-Barraza R, Gutiérrez-Adán A, Veyrunes F, Ballesta J, Laudet V, Chevret P, Avilés M. ZP4 Is Present in Murine Zona Pellucida and Is Not Responsible for the Specific Gamete Interaction. Front Cell Dev Biol 2021; 8:626679. [PMID: 33537315 PMCID: PMC7848090 DOI: 10.3389/fcell.2020.626679] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Accepted: 12/21/2020] [Indexed: 12/18/2022] Open
Abstract
Mammalian eggs are surrounded by an extracellular matrix called the zona pellucida (ZP). This envelope participates in processes such as acrosome reaction induction, sperm binding, protection of the oviductal embryo, and may be involved in speciation. In eutherian mammals, this coat is formed of three or four glycoproteins (ZP1-ZP4). While Mus musculus has been used as a model to study the ZP for more than 35 years, surprisingly, it is the only eutherian species in which the ZP is formed of three glycoproteins Zp1, Zp2, and Zp3, Zp4 being a pseudogene. Zp4 was lost in the Mus lineage after it diverged from Rattus, although it is not known when precisely this loss occurred. In this work, the status of Zp4 in several murine rodents was tested by phylogenetic, molecular, and proteomic analyses. Additionally, assays of cross in vitro fertilization between three and four ZP rodents were performed to test the effect of the presence of Zp4 in murine ZP and its possible involvement in reproductive isolation. Our results showed that Zp4 pseudogenization is restricted to the subgenus Mus, which diverged around 6 MYA. Heterologous in vitro fertilization assays demonstrate that a ZP formed of four glycoproteins is not a barrier for the spermatozoa of species with a ZP formed of three glycoproteins. This study identifies the existence of several mouse species with four ZPs that can be considered suitable for use as an experimental animal model to understand the structural and functional roles of the four ZP proteins in other species, including human.
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Affiliation(s)
- Mª José Izquierdo-Rico
- Department of Cell Biology and Histology, Faculty of Medicine, University of Murcia, Murcia, Spain
- Institute for Biomedical Research of Murcia (IMIB-Arrixaca), Murcia, Spain
- International Excellence Campus for Higher Education and Research “Campus Mare Nostrum”, Murcia, Spain
| | - Carla Moros-Nicolás
- Department of Cell Biology and Histology, Faculty of Medicine, University of Murcia, Murcia, Spain
- Institute for Biomedical Research of Murcia (IMIB-Arrixaca), Murcia, Spain
- International Excellence Campus for Higher Education and Research “Campus Mare Nostrum”, Murcia, Spain
| | - Míriam Pérez-Crespo
- Department of Animal Reproduction, Instituto Nacional de Investigacion y Tecnologia Agraria y Alimentaria (INIA), Madrid, Spain
| | - Ricardo Laguna-Barraza
- Department of Animal Reproduction, Instituto Nacional de Investigacion y Tecnologia Agraria y Alimentaria (INIA), Madrid, Spain
| | - Alfonso Gutiérrez-Adán
- Department of Animal Reproduction, Instituto Nacional de Investigacion y Tecnologia Agraria y Alimentaria (INIA), Madrid, Spain
| | - Frédéric Veyrunes
- Institut des Sciences de l'Evolution, UMR5554 CNRS/Université Montpellier/IRD/EPHE, Montpellier, France
| | - José Ballesta
- Department of Cell Biology and Histology, Faculty of Medicine, University of Murcia, Murcia, Spain
- Institute for Biomedical Research of Murcia (IMIB-Arrixaca), Murcia, Spain
- International Excellence Campus for Higher Education and Research “Campus Mare Nostrum”, Murcia, Spain
| | - Vincent Laudet
- Marine Eco-Evo-Devo Unit, Okinawa Institute of Science and Technology, Okinawa, Japan
| | - Pascale Chevret
- Laboratoire de Biométrie et Biologie Evolutive, UMR5558, CNRS, Université de Lyon, Université Claude Bernard Lyon 1, Villeurbanne, France
| | - Manuel Avilés
- Department of Cell Biology and Histology, Faculty of Medicine, University of Murcia, Murcia, Spain
- Institute for Biomedical Research of Murcia (IMIB-Arrixaca), Murcia, Spain
- International Excellence Campus for Higher Education and Research “Campus Mare Nostrum”, Murcia, Spain
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Late Quaternary Environmental and Human Impacts on the Mitochondrial DNA Diversity of Four Commensal Rodents in Myanmar. J MAMM EVOL 2020. [DOI: 10.1007/s10914-020-09519-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
AbstractWe addressed the spatiotemporal characteristics of four commensal rodent species occurring in Myanmar in comparison with other areas of the Indo-Malayan region. We examined sequence variations of the mitochondrial cytochrome b gene (Cytb) in the Pacific rat (Rattus exulans), roof rat (Rattus rattus complex, RrC), lesser bandicoot rat (Bandicota bengalensis), and house mouse (Mus musculus) using the recently developed time-dependent evolutionary rates of mtDNA. The Cytb sequences of RrC from Myanmar were shown to belong to RrC Lineage II, and their level of genetic diversity was relatively high compared to those of the other three species. RrC was found to have experienced bottleneck and rapid expansion events at least twice in the late Pleistocene period in Myanmar and a nearby region. Accordingly, paleoclimatic environmental fluctuations were shown to be an important factor affecting rodents in the subtropics of the Indo-Malayan region. Our results show that human activities during the last 10,000 years of the Holocene period affected the population dynamics of the rodent species examined, including introducing them to Myanmar from neighboring countries. Further study of these four commensal rodents in other geographic areas of the Indo-Malayan region would allow us to better understand the factors that drove their evolution and their ecological trends.
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Species and genetic diversity of Bandicota (Murinae, Rodentia) from Myanmar based on mitochondrial and nuclear gene sequences. MAMMAL RES 2020. [DOI: 10.1007/s13364-020-00491-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Freitas ES, Miller AH, Reynolds RG, Siler CD. A taxonomic conundrum: Characterizing a cryptic radiation of Asian gracile skinks (Squamata: Scincidae: Riopa) in Myanmar. Mol Phylogenet Evol 2020; 146:106754. [PMID: 32028030 DOI: 10.1016/j.ympev.2020.106754] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 01/06/2020] [Accepted: 01/28/2020] [Indexed: 10/25/2022]
Abstract
Recognizing species-level diversity is important for studying evolutionary patterns across biological disciplines and is critical for conservation efforts. However, challenges remain in delimiting species-level diversity, especially in cryptic radiations where species are genetically divergent but show little morphological differentiation. Using multilocus molecular data, phylogenetic analyses, species delimitation analyses, and morphological data, we examine lineage diversification in a cryptic radiation of Riopa skinks in Myanmar. Four species of Riopa skinks are currently recognized from Myanmar based on morphological traits, but the boundaries between three of these species, R. anguina, R. lineolata, and R. popae, are not well-defined. We find high levels of genetic diversity within these three species. Our analyses suggest that they may comprise as many as 12 independently evolving lineages, highlighting the extent to which species diversity in the region is underestimated. However, quantitative trait data suggest that these lineages have not differentiated morphologically, possibly indicating that this cryptic radiation represents non-adaptive evolution, although additional data is needed to corroborate this.
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Affiliation(s)
- Elyse S Freitas
- Department of Biology and Sam Noble Oklahoma Museum of Natural History, University of Oklahoma, Norman, OK 73072-7029, USA.
| | - Aryeh H Miller
- Department of Biology, University of North Carolina, Asheville, Asheville, NC 28804, USA
| | - R Graham Reynolds
- Department of Biology, University of North Carolina, Asheville, Asheville, NC 28804, USA
| | - Cameron D Siler
- Department of Biology and Sam Noble Oklahoma Museum of Natural History, University of Oklahoma, Norman, OK 73072-7029, USA
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Myat Zaw KM, Thwe T, Shimada T, Maung Theint SM, Saing KM, Bawm S, Katakura K, Suzuki H. Molecular Characterization of Species of the Subgenus Mus from Myanmar. Zoolog Sci 2019; 36:299-305. [PMID: 34664900 DOI: 10.2108/zs180161] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Accepted: 02/05/2019] [Indexed: 11/17/2022]
Abstract
The species composition and genetic diversity of the subgenus Mus in Myanmar are not yet fully understood. In this study, mice were trapped in rural areas near the Ayeyarwady River basin, spanning five Myanmar cities from north to south: Mandalay, Bagan, Magway, Pyay, and Yangon. Mitochondrial cytochrome b (Cytb) and nuclear melanocortin 1 receptor (Mc1r) gene sequences were determined for mice sampled and revealed a widespread occurrence of Mus nitidulus in central Myanmar in addition to its previously known occurrence in the Yangon district of southern Myanmar. Analyses of Cytb revealed two haplogroups with a genetic distance of 2.0%, suggestive of divergence several hundred thousand years ago. Mus caroli and M. musculus were confined to Yangon and Mandalay/Bagan/Magway, respectively. Mice collected from a locality on the eastern side of the Ayeyarwady River in Pyay were identified using Cytb and Mc1r sequences as M. fragilicauda, which was previously identified only in Laos and Thailand. The species M. booduga and M. cervicolor previously predicted to be common in the study area were not found. These findings elucidate the species and genetic diversity of the subgenus Mus in the Indo-Malayan Region.
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Affiliation(s)
| | - Thidalay Thwe
- Department of Zoology, University of Yangon, Yangon 11041, Myanmar,
| | | | | | - Khin Maung Saing
- Department of Zoology, University of Yangon, Yangon 11041, Myanmar
| | - Saw Bawm
- Department of Pharmacology and Parasitology, University of Veterinary Science, Yezin, Nay Pyi Taw 15013, Myanmar
| | - Ken Katakura
- Graduate School of Infectious Diseases, Faculty of Veterinary Medicine, Hokkaido University, Sapporo 060-0818, Japan
| | - Hitoshi Suzuki
- Graduate School of Environmental Earth Science, Hokkaido University, Sapporo 060-0810, Japan,
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Bibi S, Nadeem MS, Anwar MB, Shah SI, Kayani AR, Mushtaq M, Beg MA, Mahmood T. First record of Mus cookii(Cook’s mouse) from Pothwar, Pakistan: a probable case of range extension? MAMMALIA 2019. [DOI: 10.1515/mammalia-2017-0130] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractThe Southeast Asian speciesMus (Mus) cookiiRyley 1914 has been previously reported from southern China, Nepal, northeastern and peninsular India, Myanmar, north and central Thailand and Vietnam. A cytochromeb(Cytb) gene analysis revealed the presence ofM. cookiiwhich significantly expands the known western range of this species. However, it is unclear whether theM. cookiipopulation in the Pothwar region represents a historical or recent westward range expansion or, on the contrary, a relictual source population that further experienced an historic eastward range expansion into Southeast Asia.
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Affiliation(s)
- Shahnaz Bibi
- Zoology Department , PMAS-Arid Agriculture University, Murree Road , Rawalpindi, Punjab 46300 , Pakistan
| | - Muhammad Sajid Nadeem
- Zoology Department , PMAS-Arid Agriculture University, Murree Road , Rawalpindi, Punjab 46300 , Pakistan , e-mail:
| | - Muhammad Bilal Anwar
- Zoology Department , PMAS-Arid Agriculture University, Murree Road , Rawalpindi, Punjab 46300 , Pakistan
| | - Syed Israr Shah
- Zoology Department , PMAS-Arid Agriculture University, Murree Road , Rawalpindi, Punjab 46300 , Pakistan
| | - Amjad Rashid Kayani
- Zoology Department , PMAS-Arid Agriculture University, Murree Road , Rawalpindi, Punjab 46300 , Pakistan
| | - Muhammad Mushtaq
- Zoology Department , PMAS-Arid Agriculture University, Murree Road , Rawalpindi, Punjab 46300 , Pakistan
| | - Mirza Azhar Beg
- Zoology Department , PMAS-Arid Agriculture University, Murree Road , Rawalpindi, Punjab 46300 , Pakistan
| | - Tariq Mahmood
- Wildlife Management Department , PMAS-Arid Agriculture University , Rawalpindi , Pakistan
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Chaudhary V, Tripathi RS. First record of Little Indian field mouse, Mus booduga (Gray 1837) (Rodentia: Muridae), from cold arid region of Leh-Ladakh, Jammu and Kashmir, India. MAMMALIA 2018. [DOI: 10.1515/mammalia-2017-0066] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Mus booduga (Gray 1837) is a mesic rodent, recorded for the first time from the cold arid region of Leh-Ladakh, Jammu and Kashmir, India. The species was collected from crop fields and nearby areas from different altitudes ranging from 3187 to 3768 m above mean sea level. The paper describes the external measurements and diagnostic features of M. booduga collected from Leh-Ladakh region. Earlier records had shown its altitudinal distribution from 250 to 3695 m above mean sea level from Uttarakhand in the Himalayan region, however in the present study the mouse was collected up to an altitude of 3768 m which is the highest elevational record of this species for the Himalayan range.
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Affiliation(s)
- Vipin Chaudhary
- All India Network Project on Vertebrate Pest Management, ICAR-Central Arid Zone Research Institute , Jodhpur-342003 , India
| | - Rakesh S. Tripathi
- All India Network Project on Vertebrate Pest Management, ICAR-Central Arid Zone Research Institute , Jodhpur-342003 , India
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Chingangbam DS, Laishram JM, Suzuki H. Molecular phylogenetic characterization of common murine rodents from Manipur, Northeast India. Genes Genet Syst 2016; 90:21-30. [PMID: 26119663 DOI: 10.1266/ggs.90.21] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
The Indian subcontinent and Southeast Asia are hotspots of murine biodiversity, but no species from the Arakan Mountain system that demarcates the border between the two areas has been subjected to molecular phylogenetic analyses. We examined the mitochondrial cytochrome b gene sequences in six murine species (the Rattus rattus species complex, R. norvegicus, R. nitidus, Berylmys manipulus, Niviventer sp. and Mus musculus) from Manipur, which is located at the western foot of the mountain range. The sequences of B. manipulus and Niviventer sp. examined here were distinct from available congeneric sequences in the databases, with sequence divergences of 10-15%. Substantial degrees of intrapopulation divergence were detected in R. nitidus and the R. rattus species complex from Manipur, implying ancient habitation of the species in this region, while the recent introduction by modern and prehistoric human activities was suggested for R. norvegicus and M. musculus, respectively. In the nuclear gene Mc1r, also analyzed here, the R. rattus species complex from Manipur was shown to possess allelic sequences related to those from the Indian subcontinent in addition to those from East Asia. These results not only fill gaps in the phylogenetic knowledge of each taxon examined but also provide valuable insight to better understand the biogeographic importance of the Arakan Mountain system in generating the species and genetic diversity of murine rodents.
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Didion JP, Buus RJ, Naghashfar Z, Threadgill DW, Morse HC, de Villena FPM. SNP array profiling of mouse cell lines identifies their strains of origin and reveals cross-contamination and widespread aneuploidy. BMC Genomics 2014; 15:847. [PMID: 25277546 PMCID: PMC4198738 DOI: 10.1186/1471-2164-15-847] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2014] [Accepted: 09/29/2014] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND The crisis of Misidentified and contaminated cell lines have plagued the biological research community for decades. Some repositories and journals have heeded calls for mandatory authentication of human cell lines, yet misidentification of mouse cell lines has received little publicity despite their importance in sponsored research. Short tandem repeat (STR) profiling is the standard authentication method, but it may fail to distinguish cell lines derived from the same inbred strain of mice. Additionally, STR profiling does not reveal karyotypic changes that occur in some high-passage lines and may have functional consequences. Single nucleotide polymorphism (SNP) profiling has been suggested as a more accurate and versatile alternative to STR profiling; however, a high-throughput method for SNP-based authentication of mouse cell lines has not been described. RESULTS We have developed computational methods (Cell Line Authentication by SNP Profiling, CLASP) for cell line authentication and copy number analysis based on a cost-efficient SNP array, and we provide a reference database of commonly used mouse strains and cell lines. We show that CLASP readily discriminates among cell lines of diverse taxonomic origins, including multiple cell lines derived from a single inbred strain, intercross or wild caught mouse. CLASP is also capable of detecting contaminants present at concentrations as low as 5%. Of the 99 cell lines we tested, 15 exhibited substantial divergence from the reported genetic background. In all cases, we were able to distinguish whether the authentication failure was due to misidentification (one cell line, Ba/F3), the presence of multiple strain backgrounds (five cell lines), contamination by other cells and/or the presence of aneuploid chromosomes (nine cell lines). CONCLUSIONS Misidentification and contamination of mouse cell lines is potentially as widespread as it is in human cell culture. This may have substantial implications for studies that are dependent on the expected background of their cell cultures. Laboratories can mitigate these risks by regular authentication of their cell cultures. Our results demonstrate that SNP array profiling is an effective method to combat cell line misidentification.
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Affiliation(s)
- John P Didion
- />Department of Genetics, University of North Carolina at Chapel Hill, CB 7295, Chapel Hill, NC 27599-7264 USA
- />Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, CB 7295, Chapel Hill, NC 27599-7264 USA
- />Carolina Center for Genome Science, University of North Carolina at Chapel Hill, CB 7295, Chapel Hill, NC 27599-7264 USA
| | - Ryan J Buus
- />Department of Genetics, University of North Carolina at Chapel Hill, CB 7295, Chapel Hill, NC 27599-7264 USA
- />Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, CB 7295, Chapel Hill, NC 27599-7264 USA
- />Carolina Center for Genome Science, University of North Carolina at Chapel Hill, CB 7295, Chapel Hill, NC 27599-7264 USA
| | - Zohreh Naghashfar
- />Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Twinbrook I, Room 1421, 5640 Fishers Lane, Rockville, MD 20852 USA
| | - David W Threadgill
- />Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX 77843 USA
- />Department of Molecular and Cellular Medicine, College of Medicine, Texas A&M University, College Station, TX 77843 USA
| | - Herbert C Morse
- />Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Twinbrook I, Room 1421, 5640 Fishers Lane, Rockville, MD 20852 USA
| | - Fernando Pardo-Manuel de Villena
- />Department of Genetics, University of North Carolina at Chapel Hill, CB 7295, Chapel Hill, NC 27599-7264 USA
- />Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, CB 7295, Chapel Hill, NC 27599-7264 USA
- />Carolina Center for Genome Science, University of North Carolina at Chapel Hill, CB 7295, Chapel Hill, NC 27599-7264 USA
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Suzuki H, Nunome M, Kinoshita G, Aplin KP, Vogel P, Kryukov AP, Jin ML, Han SH, Maryanto I, Tsuchiya K, Ikeda H, Shiroishi T, Yonekawa H, Moriwaki K. Evolutionary and dispersal history of Eurasian house mice Mus musculus clarified by more extensive geographic sampling of mitochondrial DNA. Heredity (Edinb) 2013; 111:375-90. [PMID: 23820581 DOI: 10.1038/hdy.2013.60] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2012] [Revised: 02/21/2013] [Accepted: 04/24/2013] [Indexed: 11/09/2022] Open
Abstract
We examined the sequence variation of mitochondrial DNA control region and cytochrome b gene of the house mouse (Mus musculus sensu lato) drawn from ca. 200 localities, with 286 new samples drawn primarily from previously unsampled portions of their Eurasian distribution and with the objective of further clarifying evolutionary episodes of this species before and after the onset of human-mediated long-distance dispersals. Phylogenetic analysis of the expanded data detected five equally distinct clades, with geographic ranges of northern Eurasia (musculus, MUS), India and Southeast Asia (castaneus, CAS), Nepal (unspecified, NEP), western Europe (domesticus, DOM) and Yemen (gentilulus). Our results confirm previous suggestions of Southwestern Asia as the likely place of origin of M. musculus and the region of Iran, Afghanistan, Pakistan, and northern India, specifically as the ancestral homeland of CAS. The divergence of the subspecies lineages and of internal sublineage differentiation within CAS were estimated to be 0.37-0.47 and 0.14-0.23 million years ago (mya), respectively, assuming a split of M. musculus and Mus spretus at 1.7 mya. Of the four CAS sublineages detected, only one extends to eastern parts of India, Southeast Asia, Indonesia, Philippines, South China, Northeast China, Primorye, Sakhalin and Japan, implying a dramatic range expansion of CAS out of its homeland during an evolutionary short time, perhaps associated with the spread of agricultural practices. Multiple and non-coincident eastward dispersal events of MUS sublineages to distant geographic areas, such as northern China, Russia and Korea, are inferred, with the possibility of several different routes.
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Affiliation(s)
- H Suzuki
- Laboratory of Ecology and Genetics, Graduate School of Environmental Earth Science, Hokkaido University, Sapporo, Japan
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Cazaux B, Catalan J, Justy F, Escudé C, Desmarais E, Britton-Davidian J. Evolution of the structure and composition of house mouse satellite DNA sequences in the subgenus Mus (Rodentia: Muridea): a cytogenomic approach. Chromosoma 2013; 122:209-20. [PMID: 23515652 DOI: 10.1007/s00412-013-0402-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2012] [Revised: 01/29/2013] [Accepted: 02/23/2013] [Indexed: 12/16/2022]
Abstract
The composition and orientation of the house mouse satellite DNA sequences (minor, major, TLC) were investigated by a FISH and CO-FISH approach in 11 taxa belonging to three clades of the subgenus Mus. Using a phylogenetic framework, our results highlighted two distribution patterns. The TLC satellite, the most recently discovered satellite, was present in all clades but varied quantitatively among species. This distribution supported its appearance in the ancestor of the subgenus followed by independent evolution in species of each clade. In contrast, the minor and major satellites occurred in only two clades of the subgenus indicating the simultaneous and recent amplification of these sequences. In addition, although qualitative differences in the composition and orientation of the satellite sequences were observed among the taxa, none of the features studied were unique to the house mouse and could account for the extensive chromosomal plasticity evidenced in Mus musculus domesticus.
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Affiliation(s)
- B Cazaux
- Institut des Sciences de l'Evolution, Université Montpellier 2, cc065, Pl. E. Bataillon, 34095 Montpellier Cedex 05, France
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12
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Suzuki H. Evolutionary and phylogeographic views on Mc1r and Asip variation in mammals. Genes Genet Syst 2013; 88:155-64. [DOI: 10.1266/ggs.88.155] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Affiliation(s)
- Hitoshi Suzuki
- Laboratory of Ecology and Genetics, Graduate School of Environmental Earth Science, Hokkaido University
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Systematics and evolution of the African pygmy mice, subgenus Nannomys: A review. ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY 2012. [DOI: 10.1016/j.actao.2012.01.001] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Cazaux B, Catalan J, Veyrunes F, Douzery EJ, Britton-Davidian J. Are ribosomal DNA clusters rearrangement hotspots?: a case study in the genus Mus (Rodentia, Muridae). BMC Evol Biol 2011; 11:124. [PMID: 21569527 PMCID: PMC3112088 DOI: 10.1186/1471-2148-11-124] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2010] [Accepted: 05/13/2011] [Indexed: 11/10/2022] Open
Abstract
Background Recent advances in comparative genomics have considerably improved our knowledge of the evolution of mammalian karyotype architecture. One of the breakthroughs was the preferential localization of evolutionary breakpoints in regions enriched in repetitive sequences (segmental duplications, telomeres and centromeres). In this context, we investigated the contribution of ribosomal genes to genome reshuffling since they are generally located in pericentromeric or subtelomeric regions, and form repeat clusters on different chromosomes. The target model was the genus Mus which exhibits a high rate of karyotypic change, a large fraction of which involves centromeres. Results The chromosomal distribution of rDNA clusters was determined by in situ hybridization of mouse probes in 19 species. Using a molecular-based reference tree, the phylogenetic distribution of clusters within the genus was reconstructed, and the temporal association between rDNA clusters, breakpoints and centromeres was tested by maximum likelihood analyses. Our results highlighted the following features of rDNA cluster dynamics in the genus Mus: i) rDNA clusters showed extensive diversity in number between species and an almost exclusive pericentromeric location, ii) a strong association between rDNA sites and centromeres was retrieved which may be related to their shared constraint of concerted evolution, iii) 24% of the observed breakpoints mapped near an rDNA cluster, and iv) a substantial rate of rDNA cluster change (insertion, deletion) also occurred in the absence of chromosomal rearrangements. Conclusions This study on the dynamics of rDNA clusters within the genus Mus has revealed a strong evolutionary relationship between rDNA clusters and centromeres. Both of these genomic structures coincide with breakpoints in the genus Mus, suggesting that the accumulation of a large number of repeats in the centromeric region may contribute to the high level of chromosome repatterning observed in this group. However, the elevated rate of rDNA change observed in the chromosomally invariant clade indicates that the presence of these sequences is insufficient to lead to genome instability. In agreement with recent studies, these results suggest that additional factors such as modifications of the epigenetic state of DNA may be required to trigger evolutionary plasticity.
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Affiliation(s)
- Benoîte Cazaux
- Institut des Sciences de l'Evolution, UMR5554 CNRS/Université Montpellier II, France.
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