1
|
Haerter CAG, Blanco DR, Traldi JB, Feldberg E, Margarido VP, Lui RL. Are scattered microsatellites weak chromosomal markers? Guided mapping reveals new insights into Trachelyopterus (Siluriformes: Auchenipteridae) diversity. PLoS One 2023; 18:e0285388. [PMID: 37310952 DOI: 10.1371/journal.pone.0285388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 04/22/2023] [Indexed: 06/15/2023] Open
Abstract
The scattered distribution pattern of microsatellites is a challenging problem in fish cytogenetics. This type of array hinders the identification of useful patterns and the comparison between species, often resulting in over-limited interpretations that only label it as "scattered" or "widely distributed". However, several studies have shown that the distribution pattern of microsatellites is non-random. Thus, here we tested whether a scattered microsatellite could have distinct distribution patterns on homeologous chromosomes of closely related species. The clustered sites of 18S and 5S rDNA, U2 snRNA and H3/H4 histone genes were used as a guide to compare the (GATA)n microsatellite distribution pattern on the homeologous chromosomes of six Trachelyopterus species: T. coriaceus and Trachelyopterus aff. galeatus from the Araguaia River basin; T. striatulus, T. galeatus and T. porosus from the Amazonas River basin; and Trachelyopterus aff. coriaceus from the Paraguay River basin. Most species had similar patterns of the (GATA)n microsatellite in the histone genes and 5S rDNA carriers. However, we have found a chromosomal polymorphism of the (GATA)n sequence in the 18S rDNA carriers of Trachelyopterus galeatus, which is in Hard-Weinberg equilibrium and possibly originated through amplification events; and a chromosome polymorphism in Trachelyopterus aff. galeatus, which combined with an inversion polymorphism of the U2 snRNA in the same chromosome pair resulted in six possible cytotypes, which are in Hardy-Weinberg disequilibrium. Therefore, comparing the distribution pattern on homeologous chromosomes across the species, using gene clusters as a guide to identify it, seems to be an effective way to further the analysis of scattered microsatellites in fish cytogenetics.
Collapse
Affiliation(s)
| | | | - Josiane Baccarin Traldi
- Departamento de Genética, Instituto de Ciências Biológicas, Universidade Federal do Amazonas, Manaus, Brasil
| | | | - Vladimir Pavan Margarido
- Universidade Estadual do Oeste do Paraná, Centro de Ciências Biológicas e da Saúde, Cascavel, Paraná, Brasil
| | - Roberto Laridondo Lui
- Universidade Estadual do Oeste do Paraná, Centro de Ciências Biológicas e da Saúde, Cascavel, Paraná, Brasil
| |
Collapse
|
2
|
Silva DMZA, Castro JP, Goes CAG, Utsunomia R, Vidal MR, Nascimento CN, Lasmar LF, Paim FG, Soares LB, Oliveira C, Porto-Foresti F, Artoni RF, Foresti F. B Chromosomes in Psalidodon scabripinnis (Characiformes, Characidae) Species Complex. Animals (Basel) 2022; 12:ani12172174. [PMID: 36077895 PMCID: PMC9454733 DOI: 10.3390/ani12172174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Revised: 08/19/2022] [Accepted: 08/19/2022] [Indexed: 11/24/2022] Open
Abstract
Simple Summary For more than a century, B chromosomes have been investigated in several eukaryotic species. These supernumerary genomic elements behave as parasites or provide fitness benefits to the hosts. They are mostly composed of repetitive DNA, but they also have protein-coding genes. B chromosomes are associated with differential gene expression and phenotypic effects. This makes them one of the most interesting genomic elements to investigate. Fish species of the Psalidodon genus harbor a great diversity of B chromosomes. Recent studies showed they share a common ancestor, persisting in the genus for a long time and enduring speciation processes. In the Psalidodon scabripinnis species complex, B chromosomes express their own genes, mostly related to cell cycle and gonad differentiation. Moreover, these B chromosomes are associated with functional effects, e.g., cell cycle extension. Here, we review the current knowledge regarding these elements in the P. scabripinnis species complex and propose a chromosome speciation model facilitated by the B chromosome manipulation of the cell machinery. Abstract B chromosomes are extra-genomic components of cells found in individuals and in populations of some eukaryotic organisms. They have been described since the first observations of chromosomes, but several aspects of their biology remain enigmatic. Despite being present in hundreds of fungi, plants, and animal species, only a small number of B chromosomes have been investigated through high-throughput analyses, revealing the remarkable mechanisms employed by these elements to ensure their maintenance. Populations of the Psalidodon scabripinnis species complex exhibit great B chromosome diversity, making them a useful material for various analyses. In recent years, important aspects of their biology have been revealed. Here, we review these studies presenting a comprehensive view of the B chromosomes in the P. scabripinnis complex and a new hypothesis regarding the role of the B chromosome in the speciation process.
Collapse
Affiliation(s)
- Duílio M. Z. A. Silva
- Laboratory of Biology and Genetics of Fishes, Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University, Botucatu 18618-970, SP, Brazil
- Correspondence:
| | - Jonathan P. Castro
- Post-Graduate Program in Evolutionary Genetics and Molecular Biology, Department of Genetics and Evolution, Federal University of Sao Carlos, Sao Carlos 13565-905, SP, Brazil
- Laboratory of Evolutionary Genetics, Department of Structural, Molecular and Genetic Biology, State University of Ponta Grossa, Ponta Grossa 84030-900, PR, Brazil
| | - Caio A. G. Goes
- Laboratory of Fish Genetics, Department of Biological Sciences, Faculty of Sciences, São Paulo State University, Bauru 17033-360, SP, Brazil
| | - Ricardo Utsunomia
- Laboratory of Fish Genetics, Department of Biological Sciences, Faculty of Sciences, São Paulo State University, Bauru 17033-360, SP, Brazil
- Laboratory of Fish Genetics, Department of Genetics, Institute of Biological Sciences and Health, Federal Rural University of Rio de Janeiro, Seropedica 23890-000, RJ, Brazil
| | - Mateus R. Vidal
- Laboratory of Biology and Genetics of Fishes, Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University, Botucatu 18618-970, SP, Brazil
| | - Cristiano N. Nascimento
- Laboratory of Biology and Genetics of Fishes, Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University, Botucatu 18618-970, SP, Brazil
| | - Lucas F. Lasmar
- Laboratory of Biology and Genetics of Fishes, Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University, Botucatu 18618-970, SP, Brazil
| | - Fabilene G. Paim
- Laboratory of Biology and Genetics of Fishes, Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University, Botucatu 18618-970, SP, Brazil
| | - Letícia B. Soares
- Laboratory of Biology and Genetics of Fishes, Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University, Botucatu 18618-970, SP, Brazil
| | - Claudio Oliveira
- Laboratory of Biology and Genetics of Fishes, Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University, Botucatu 18618-970, SP, Brazil
| | - Fábio Porto-Foresti
- Laboratory of Fish Genetics, Department of Biological Sciences, Faculty of Sciences, São Paulo State University, Bauru 17033-360, SP, Brazil
| | - Roberto F. Artoni
- Post-Graduate Program in Evolutionary Genetics and Molecular Biology, Department of Genetics and Evolution, Federal University of Sao Carlos, Sao Carlos 13565-905, SP, Brazil
- Laboratory of Evolutionary Genetics, Department of Structural, Molecular and Genetic Biology, State University of Ponta Grossa, Ponta Grossa 84030-900, PR, Brazil
| | - Fausto Foresti
- Laboratory of Biology and Genetics of Fishes, Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University, Botucatu 18618-970, SP, Brazil
| |
Collapse
|
3
|
Teixeira GA, de Aguiar HJAC, Petitclerc F, Orivel J, Lopes DM, Barros LAC. Evolutionary insights into the genomic organization of major ribosomal DNA in ant chromosomes. INSECT MOLECULAR BIOLOGY 2021; 30:340-354. [PMID: 33586259 DOI: 10.1111/imb.12699] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 01/28/2021] [Accepted: 02/08/2021] [Indexed: 06/12/2023]
Abstract
The major rDNA genes are composed of tandem repeats and are part of the nucleolus organizing regions (NORs). They are highly conserved and therefore useful in understanding the evolutionary patterns of chromosomal locations. The evolutionary dynamics of the karyotype may affect the organization of rDNA genes within chromosomes. In this study, we physically mapped 18S rDNA genes in 13 Neotropical ant species from four subfamilies using fluorescence in situ hybridization. Furthermore, a survey of published rDNA cytogenetic data for 50 additional species was performed, which allowed us to detect the evolutionary patterns of these genes in ant chromosomes. Species from the Neotropical, Palearctic, and Australian regions, comprising a total of 63 species from 19 genera within six subfamilies, were analysed. Most of the species (48 out of 63) had rDNA genes restricted to a single chromosome pair in their intrachromosomal regions. The position of rDNA genes within the chromosomes appears to hinder their dispersal throughout the genome, as translocations and ectopic recombination are uncommon in intrachromosomal regions because they can generate meiotic abnormalities. Therefore, rDNA genes restricted to a single chromosome pair seem to be a plesiomorphic feature in ants, while multiple rDNA sites, observed in distinct subfamilies, may have independent origins in different genera.
Collapse
Affiliation(s)
- G A Teixeira
- Programa de Pós-graduação em Biologia Celular e Estrutural, Universidade Federal de Viçosa, Viçosa, Brazil
- Laboratório de Citogenética de Insetos, Departamento de Biologia Geral, Universidade Federal de Viçosa, Viçosa, Brazil
| | - H J A C de Aguiar
- Universidade Federal do Amapá, Campus Binacional, BR 156, n° 3051, Bairro Universidade, Oiapoque, 68980-000, Brazil
| | - F Petitclerc
- CNRS, UMR EcoFoG, AgroParisTech, CIRAD, INRA, Université de Guyane, Université des Antilles, Campus Agronomique, Kourou, France
| | - J Orivel
- CNRS, UMR EcoFoG, AgroParisTech, CIRAD, INRA, Université de Guyane, Université des Antilles, Campus Agronomique, Kourou, France
| | - D M Lopes
- Laboratório de Citogenética de Insetos, Departamento de Biologia Geral, Universidade Federal de Viçosa, Viçosa, Brazil
| | - L A C Barros
- Universidade Federal do Amapá, Campus Binacional, BR 156, n° 3051, Bairro Universidade, Oiapoque, 68980-000, Brazil
| |
Collapse
|
4
|
Mammola S, Lunghi E, Bilandžija H, Cardoso P, Grimm V, Schmidt SI, Hesselberg T, Martínez A. Collecting eco-evolutionary data in the dark: Impediments to subterranean research and how to overcome them. Ecol Evol 2021; 11:5911-5926. [PMID: 34141192 PMCID: PMC8207145 DOI: 10.1002/ece3.7556] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 03/23/2021] [Accepted: 03/25/2021] [Indexed: 12/25/2022] Open
Abstract
Caves and other subterranean habitats fulfill the requirements of experimental model systems to address general questions in ecology and evolution. Yet, the harsh working conditions of these environments and the uniqueness of the subterranean organisms have challenged most attempts to pursuit standardized research.Two main obstacles have synergistically hampered previous attempts. First, there is a habitat impediment related to the objective difficulties of exploring subterranean habitats and our inability to access the network of fissures that represents the elective habitat for the so-called "cave species." Second, there is a biological impediment illustrated by the rarity of most subterranean species and their low physiological tolerance, often limiting sample size and complicating laboratory experiments.We explore the advantages and disadvantages of four general experimental setups (in situ, quasi in situ, ex situ, and in silico) in the light of habitat and biological impediments. We also discuss the potential of indirect approaches to research. Furthermore, using bibliometric data, we provide a quantitative overview of the model organisms that scientists have exploited in the study of subterranean life.Our over-arching goal is to promote caves as model systems where one can perform standardized scientific research. This is important not only to achieve an in-depth understanding of the functioning of subterranean ecosystems but also to fully exploit their long-discussed potential in addressing general scientific questions with implications beyond the boundaries of this discipline.
Collapse
Affiliation(s)
- Stefano Mammola
- Laboratory for Integrative Biodiversity Research (LIBRe)Finnish Museum of Natural History (LUOMUS)University of HelsinkiHelsinkiFinland
- Dark‐MEG: Molecular Ecology GroupWater Research Institute (IRSA)National Research Council (CNR)VerbaniaItaly
| | - Enrico Lunghi
- Key Laboratory of the Zoological Systematics and EvolutionInstitute of ZoologyChinese Academy of SciencesBeijingChina
- Museo di Storia Naturale dell'Università degli Studi di Firenze“La Specola”FirenzeItaly
| | - Helena Bilandžija
- Department of Molecular BiologyRudjer Boskovic InstituteZagrebCroatia
| | - Pedro Cardoso
- Laboratory for Integrative Biodiversity Research (LIBRe)Finnish Museum of Natural History (LUOMUS)University of HelsinkiHelsinkiFinland
| | - Volker Grimm
- Department of Ecological ModellingHelmholtz Centre for Environmental Research – UFZLeipzigGermany
- Plant Ecology and Nature ConservationUniversity of PotsdamPotsdamGermany
- German Centre for Integrative Biodiversity Research (iDiv) Halle‐Jena‐LeipzigLeipzigGermany
| | - Susanne I. Schmidt
- Institute of HydrobiologyBiology Centre CASČeské BudějoviceCzech Republic
| | | | - Alejandro Martínez
- Dark‐MEG: Molecular Ecology GroupWater Research Institute (IRSA)National Research Council (CNR)VerbaniaItaly
| |
Collapse
|
5
|
Goes CAG, Daniel SN, Piva LH, Yasui GS, Artoni RF, Hashimoto DT, Foresti F, Porto-Foresti F. Cytogenetic markers as a tool for characterization of hybrids of Astyanax Baird & Girard, 1854 and Hyphessobrycon Eigenmann, 1907. COMPARATIVE CYTOGENETICS 2020; 14:231-242. [PMID: 32537093 PMCID: PMC7270076 DOI: 10.3897/compcytogen.v14i2.49513] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Accepted: 04/03/2020] [Indexed: 06/11/2023]
Abstract
Astyanax Baird et Girard, 1854, is one of the largest genera in the family Characidae and comprises 177 valid species. This genus has been the focus of cytogenetic studies primarily owing to the presence of B chromosomes and high karyotypic diversity among different populations. The intense genetic variability in Astyanax is one of the factors responsible for the occurrence of species complexes, which are groups (1) with certain difficulties in establishing common genetic pools or (2) belonging to different cryptic species. To evaluate cytogenetic marker inheritance and the possibility of the identification of these hybrids, this study aimed to describe cytogenetic hybrids from three strains of species of the genera Astyanax and Hyphessobrycon Eigenmann, 1908. A. lacustris Lütken, 1875, A. schubarti Britski, 1964, A. fasciatus Cuvier, 1819, and H. anisitsi Eigenmann, 1907 were used to generate three hybrid lineages. The diploid number, heterochromatin sites, and ribosomal genes (18S and 5S rDNA) of the parental strains and the hybrids were analyzed. The results indicated that the three hybrid lineages had cytogenetic markers of both parents, presenting Mendelian inheritance. However, differences in distribution of heterochromatic blocks were observed between the hybrids and the parent strains. Our results allowed the identification of the hybrid strains based on the cytogenetic markers applied, reinforcing the efficiency of cytogenetic markers as tools for identification and indicating that such events may increase the karyotypic diversity in the genera Astyanax and Hyphessobrycon.
Collapse
Affiliation(s)
- Caio Augusto Gomes Goes
- Universidade Estadual Paulista (UNESP) “Júlio de Mesquita Filho”, Faculdade de Ciências, Edmundo Carrijo Coube Avenue, Bauru, SP, BrazilUniversidade Estadual PaulistaBauruBrazil
| | - Sandro Natal Daniel
- Universidade Estadual Paulista (UNESP) “Júlio de Mesquita Filho”, Faculdade de Ciências, Edmundo Carrijo Coube Avenue, Bauru, SP, BrazilUniversidade Estadual PaulistaBauruBrazil
| | - Lucas Henrique Piva
- Centro nacional de Pesquisa e Conservação da Biota Aquática Continental (CEPTA-ICMBIO), Prefeito Euberto Nemésio Pereira Godói Highway, Pirassununga, SP, BrazilCentro nacional de Pesquisa e Conservação da Biota Aquática ContinentalPirassunungaBrazil
| | - George Shigueki Yasui
- Centro nacional de Pesquisa e Conservação da Biota Aquática Continental (CEPTA-ICMBIO), Prefeito Euberto Nemésio Pereira Godói Highway, Pirassununga, SP, BrazilCentro nacional de Pesquisa e Conservação da Biota Aquática ContinentalPirassunungaBrazil
| | - Roberto Ferreira Artoni
- Universidade Estadual de Ponta Grossa, Setor de Ciências Biológicas e da Saúde, Santos Andrade Square, Ponta Grossa, PR, BrazilUniversidade Estadual de Ponta GrossaPonta GrossaBrazil
| | - Diogo Teruo Hashimoto
- Universidade Estadual Paulista (UNESP) “Júlio de Mesquita Filho”, Centro de Aquicultura da UNESP, Prof. Paulo Donato Castelane Acess way, Jaboticabal, SP, BrazilUniversidade Estadual PaulistaJaboticabalBrazil
| | - Fausto Foresti
- Universidade Estadual Paulista (UNESP) “Júlio de Mesquita Filho”, Instituto de Biociências, Prof. Montenegro Avenue, Botucatu, SP, BrazilUniversidade Estadual PaulistaBotucatuBrazil
| | - Fábio Porto-Foresti
- Universidade Estadual Paulista (UNESP) “Júlio de Mesquita Filho”, Faculdade de Ciências, Edmundo Carrijo Coube Avenue, Bauru, SP, BrazilUniversidade Estadual PaulistaBauruBrazil
| |
Collapse
|
6
|
Schemczssen-Graeff Z, Barbosa P, Castro JP, Silva MD, Almeida MCD, Moreira-Filho O, Artoni RF. Dynamics of Replication and Nuclear Localization of the B Chromosome in Kidney Tissue Cells in Astyanax scabripinnis (Teleostei: Characidae). Zebrafish 2020; 17:147-152. [PMID: 32159463 DOI: 10.1089/zeb.2019.1756] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
B chromosomes are extra genomic compounds found in different taxonomic groups, including plants and animals. Obtaining patterns of resolutive chromosomal bands is necessary to understand the nuclear organization, variability and nature of B chromosome chromatin and possible transcriptional regions. In this study, we analyzed 35 Astyanax scabripinnis specimens sampled from Fazenda Lavrinha, a stream in the Paraíba do Sul river basin, Brazil. Through the incorporation of the thymidine analog 5'-bromo-2'-deoxyuridine (5-BrdU) in vivo, it was possible to recognize the replicating regions of the B chromosome at the beginning of the S phase, differentially characterized in relationship to the regions of late replication. In this perspective, it is possible to suggest that the B chromosome of this species possesses a territory and the chromatin accessible for transcription, especially in the light (i.e., early replicating) bands (p1.1; p1.3; and p2.1 and q1.1, q1.3, q2.1, and q2.2). The late-replicating regions are corresponding to the blocks of constitutive heterochromatin. They show a preferential accumulation of satellite DNA As51. By the use of the fluorochrome chromomycin A3 (CMA3), it was possible to identify GC-rich chromosomal regions, corresponding to late-replicating parts of genome, confirming the revealed data by the replication banding and C-banding. In addition, the analysis by confocal microscopy in kidney cells indicates the location of a peripheral anchorage of this chromosome in the nuclear lamina, reinforcing the idea of downregulation of the associated regions.
Collapse
Affiliation(s)
- Zelinda Schemczssen-Graeff
- Programa de Pós-Graduação em Biologia Evolutiva, Laboratório de Genética Evolutiva, Universidade Estadual de Ponta Grossa, Ponta Grossa, Paraná, Brazil
| | - Patrícia Barbosa
- Programa de Pós-Graduação em Genética Evolutiva e Biologia Molecular, Laboratório de Citogenética de Peixes, Universidade Federal de São Carlos, São Carlos, São Paulo, Brazil
| | - Jonathan Pena Castro
- Programa de Pós-Graduação em Genética Evolutiva e Biologia Molecular, Laboratório de Citogenética de Peixes, Universidade Federal de São Carlos, São Carlos, São Paulo, Brazil
| | - Maelin da Silva
- Programa de Pós-Graduação em Biologia Evolutiva, Laboratório de Genética Evolutiva, Universidade Estadual de Ponta Grossa, Ponta Grossa, Paraná, Brazil
| | - Mara Cristina de Almeida
- Programa de Pós-Graduação em Biologia Evolutiva, Laboratório de Genética Evolutiva, Universidade Estadual de Ponta Grossa, Ponta Grossa, Paraná, Brazil
| | - Orlando Moreira-Filho
- Programa de Pós-Graduação em Biologia Evolutiva, Laboratório de Genética Evolutiva, Universidade Estadual de Ponta Grossa, Ponta Grossa, Paraná, Brazil.,Programa de Pós-Graduação em Genética Evolutiva e Biologia Molecular, Laboratório de Citogenética de Peixes, Universidade Federal de São Carlos, São Carlos, São Paulo, Brazil
| | - Roberto Ferreira Artoni
- Programa de Pós-Graduação em Biologia Evolutiva, Laboratório de Genética Evolutiva, Universidade Estadual de Ponta Grossa, Ponta Grossa, Paraná, Brazil.,Programa de Pós-Graduação em Genética Evolutiva e Biologia Molecular, Laboratório de Citogenética de Peixes, Universidade Federal de São Carlos, São Carlos, São Paulo, Brazil
| |
Collapse
|
7
|
Castro JP, Hattori RS, Yoshinaga TT, Silva DMZDA, Foresti F, Santos MH, Almeida MC, Artoni RF. Differential Expression of dmrt1 in Astyanax scabripinnis (Teleostei, Characidade) Is Correlated with B Chromosome Occurrence. Zebrafish 2018; 16:182-188. [PMID: 30562152 DOI: 10.1089/zeb.2018.1650] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Astyanax is an abundant fish genus in South America. Some species of this group are characterized by the presence of B chromosomes and absence of morphologically differentiated sex chromosomes. In this study, we used quantitative real-time polymerase chain reaction to characterize mRNA expression of dmrt1 in Astyanax scabripinnis gonads. Maturing gonads of males with the B chromosome overexpressed dmrt1. Our findings suggest that B chromosomes may have an adaptive role in A. scabripinnis sex determination and maintenance.
Collapse
Affiliation(s)
- Jonathan Pena Castro
- 1 Departamento de Genética e Evolução, Programa de Pós-Graduação em Biologia Evolutiva e Genética Molecular, Universidade Federal de São Carlos, São Carlos, Brazil
| | - Ricardo Shohei Hattori
- 2 Estação Experimental de Salmonicultura de Campos do Jordão, UPD-CJ (APTA/SAA), São Paulo, Brazil
| | - Túlio Teruo Yoshinaga
- 3 Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo, Departamento de Cirurgia, Universidade de São Paulo, Butantã, São Paulo, Brazil
| | | | - Fausto Foresti
- 4 Departamento de Morfologia, Instituto de Biociências, Universidade Estadual Paulista, Botucatu, Brazil
| | - Mateus Henrique Santos
- 5 Departamento de Biologia Estrutural, Molecular e Genética, Programa de Pós-Graduação em Biologia Evolutiva, Universidade Estadual de Ponta Grossa, Ponta Grossa, Brazil
| | - Mara Cristina Almeida
- 5 Departamento de Biologia Estrutural, Molecular e Genética, Programa de Pós-Graduação em Biologia Evolutiva, Universidade Estadual de Ponta Grossa, Ponta Grossa, Brazil
| | - Roberto Ferreira Artoni
- 1 Departamento de Genética e Evolução, Programa de Pós-Graduação em Biologia Evolutiva e Genética Molecular, Universidade Federal de São Carlos, São Carlos, Brazil.,5 Departamento de Biologia Estrutural, Molecular e Genética, Programa de Pós-Graduação em Biologia Evolutiva, Universidade Estadual de Ponta Grossa, Ponta Grossa, Brazil
| |
Collapse
|
8
|
Utsunomia R, Melo S, Scacchetti PC, Oliveira C, Machado MDA, Pieczarka JC, Nagamachi CY, Foresti F. Particular Chromosomal Distribution of Microsatellites in Five Species of the Genus Gymnotus (Teleostei, Gymnotiformes). Zebrafish 2018; 15:398-403. [PMID: 29927722 DOI: 10.1089/zeb.2018.1570] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Microsatellites show great abundance in eukaryotic genomes, although distinct chromosomal distribution patterns might be observed, from small dispersed signals to strong clustered motifs. In Neotropical fishes, the chromosome mapping of distinct microsatellites was employed several times to uncover the origin and evolution of sex and supernumerary chromosomes, whereas a detailed comparative analysis considering different motifs at the chromosomal level is scarce. Here, we report the chromosomal location of several simple sequence repeats (SSRs) in distinct electric knife fishes showing variable diploid chromosome numbers to unveil the structural organization of several microsatellite motifs in distinct Gymnotus species. Our results showed that some SSRs are scattered throughout the genomes, whereas others are particularly clustered displaying intense genomic compartmentalization. Interestingly, the motifs CA, GA, and GAG exhibited a band-like pattern of hybridization, useful for the identification of homologous chromosomes. Finally, the colocalization of SSRs with multigene families is probably related to the association of microsatellites with gene spacers in this case.
Collapse
Affiliation(s)
- Ricardo Utsunomia
- 1 Laboratório de Biologia e Genética de Peixes, Department of Morphology, Institute of Biosciences of Botucatu, São Paulo State University , Botucatu, SP, Brazil
| | - Silvana Melo
- 1 Laboratório de Biologia e Genética de Peixes, Department of Morphology, Institute of Biosciences of Botucatu, São Paulo State University , Botucatu, SP, Brazil
| | - Priscilla Cardim Scacchetti
- 1 Laboratório de Biologia e Genética de Peixes, Department of Morphology, Institute of Biosciences of Botucatu, São Paulo State University , Botucatu, SP, Brazil
| | - Claudio Oliveira
- 1 Laboratório de Biologia e Genética de Peixes, Department of Morphology, Institute of Biosciences of Botucatu, São Paulo State University , Botucatu, SP, Brazil
| | - Milla de Andrade Machado
- 2 Laboratório de Citogenética, Centro de Estudos Avançados da Biodiversidade, Instituto de Ciências Biológicas, Universidade Federal do Pará , Belém, PA, Brazil
| | - Julio Cesar Pieczarka
- 2 Laboratório de Citogenética, Centro de Estudos Avançados da Biodiversidade, Instituto de Ciências Biológicas, Universidade Federal do Pará , Belém, PA, Brazil
| | - Cleusa Yoshiko Nagamachi
- 2 Laboratório de Citogenética, Centro de Estudos Avançados da Biodiversidade, Instituto de Ciências Biológicas, Universidade Federal do Pará , Belém, PA, Brazil
| | - Fausto Foresti
- 1 Laboratório de Biologia e Genética de Peixes, Department of Morphology, Institute of Biosciences of Botucatu, São Paulo State University , Botucatu, SP, Brazil
| |
Collapse
|
9
|
Pazza R, Dergam JA, Kavalco KF. Trends in Karyotype Evolution in Astyanax (Teleostei, Characiformes, Characidae): Insights From Molecular Data. Front Genet 2018; 9:131. [PMID: 29713335 PMCID: PMC5911472 DOI: 10.3389/fgene.2018.00131] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Accepted: 04/03/2018] [Indexed: 12/05/2022] Open
Abstract
The study of patterns and evolutionary processes in neotropical fish is not always an easy task due the wide distribution of major fish groups in large and extensive river basins. Thus, it is not always possible to detect or correlate possible effects of chromosome rearrangements in the evolution of biodiversity. In the Astyanax genus, chromosome data obtained since the 1970s have shown evidence of cryptic species, karyotypic plasticity, supernumerary chromosomes, triploidies, and minor chromosomal rearrangements. In the present work, we map and discuss the main chromosomal events compatible with the molecular evolution of the genus Astyanax (Characiformes, Characidae) using mitochondrial DNA sequence data, in the search for major chromosome evolutionary trends within this taxon.
Collapse
Affiliation(s)
- Rubens Pazza
- Laboratory of Ecological and Evolutionary Genetics, Institute of Biological and Health Sciences, Federal University of Viçosa, Rio Paranaíba, Brazil
| | - Jorge A. Dergam
- Laboratory of Molecular Systematics “Beagle”, Department of Animal Biology, Federal University of Viçosa, Viçosa, Brazil
| | - Karine F. Kavalco
- Laboratory of Ecological and Evolutionary Genetics, Institute of Biological and Health Sciences, Federal University of Viçosa, Rio Paranaíba, Brazil
| |
Collapse
|