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	Provedor de dados Genet. Mol. Biol. (8) PAB (2) Acta Botanica (1) Scientia Agricola (1) Rev. Bras. Bot. (1) Rev. Bras. Frutic. (1) Mais... Autor Telles,Mariana Pires de Campos (14) Diniz-Filho,José Alexandre Felizola (5) Soares,Thannya Nascimento (4) Chaves,Lázaro José (3) Bastos,Rogério Pereira (2) Coelho,Alexandre Siqueira Guedes (2) Diniz Filho,José Alexandre Felizola (2) Novaes,Evandro (2) Resende,Lucileide Vilela (2) Silva,Daniela de Melo e (2) Astolfi Filho,Spartaco (1) Bandeira,Ludmila Ferreira (1) Batista,Eliane cotrim (1) Bertoni,Bianca Waléria (1) Bini,Luis Mauricio (1) Borges,Canrobert Tormin (1) Cruz,Aparecido Divino da (1) Damião Filho,Carlos Ferreira (1) Diniz Filho,José Alexandre F. (1) Diniz-Filho,José Alexandre F. (1) Mais... Palavra-chave Cerrado (2) Geographical genetics (2) Population structure (2) RAPD (2) SSR (2) "Baru" tree (1) Anura (1) Autocorrelation (1) Autocorrelação espacial (1) Baru (1) Bignoniaceae (1) Biodiversity conservation (1) Bolsa-de-pastor (1) Cagaita (1) Conservation (1) Conservação (1) Estrutura familiar (1) Eupemphix nattereri (1) Fatores ambientais (1) Fenótipos (1) Mais... Tipo do documento Info:eu-repo/semantics/article (14) Ano 2020 (2) 2018 (2) 2013 (1) 2010 (1) 2009 (1) 2008 (1) 2007 (2) 2006 (1) 2001 (1) 2000 (2) Mais... País Brazil (14) Idioma Inglês (11) Português (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 14 Primeira ... 1 ... Última A review of techniques for spatial modeling in geographical, conservation and landscape genetics Genet. Mol. Biol. Diniz-Filho,José Alexandre Felizola; Nabout,João Carlos; Telles,Mariana Pires de Campos; Soares,Thannya Nascimento; Rangel,Thiago Fernando L.V.B.. Most evolutionary processes occur in a spatial context and several spatial analysis techniques have been employed in an exploratory context. However, the existence of autocorrelation can also perturb significance tests when data is analyzed using standard correlation and regression techniques on modeling genetic data as a function of explanatory variables. In this case, more complex models incorporating the effects of autocorrelation must be used. Here we review those models and compared their relative performances in a simple simulation, in which spatial patterns in allele frequencies were generated by a balance between random variation within populations and spatially-structured gene flow. Notwithstanding the somewhat idiosyncratic behavior of the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Autocorrelation; Geographical genetics; Isolation-by-distance; Landscape genetics; Spatial regression. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572009000200001 Cross-amplification and characterization of microsatellite markers in species of Manihot Mill. (Euphorbiaceae) endemic to the Brazilian Cerrado Acta Botanica Miranda,Kássia Marques Corrêa; Guimarães,Rejane Araújo; Silva,Marcos José da; Oliveira,Patrícia Rasteiro Ordiale; Ribeiro,Thania Gonçalves; Mendes,Thainara Policarpo; Telles,Mariana Pires de Campos; Soares,Thannya Nascimento. ABSTRACT The genus Manihot Mill. contains about 120 species of which about 104 occur in Brazil. We tested the cross-amplification of ten microsatellite markers developed for Manihot esculenta in 15 species of Manihot endemic to the Brazilian Cerrado. We also evaluated the genetic diversity of Manihot irwinii, M. orbicularis, and M. purpureocostata. Ten pairs of primers were amplified among 14 species of Manihot. The percentage of polymorphic loci per species varied from 70 to 100 %. Nine markers showed amplification and polymorphism when evaluated on polyacrylamide gel. The markers were combined to form three sets for multiplex genotyping for genetic diversity analysis, and showed 51, 75, and 75 alleles in M. irwinii, M. orbicularis, and M.... Tipo: Info:eu-repo/semantics/article Palavras-chave: Genetic diversity; Polymorphism; SSR; Transferability wild cassava. Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020000400772 Cytogenetics of two hylid frogs from Brazilian Cerrado Genet. Mol. Biol. Targueta,Cíntia Pelegrineti; Guerra,Vinícius; Gambale,Priscilla Guedes; Bastos,Rogério Pereira; Silva,Daniela de Melo e; Telles,Mariana Pires de Campos. Abstract Cytogenetic data can be useful for taxonomic and phylogenetic studies, as well as to provide information about chromosome evolution. Therefore, it may help design conservation priorities for some threatened species, such as anurans. Herein, we describe the karyotypes of Scinax constrictus and Ololygon centralis, native endemic species from the Brazilian Cerrado. Chromosome preparations for both species were stained with Giemsa for morphological analyses and then impregnated by the Ag-NOR method for localization of the nucleolar organizer region (NOR). Both species had 24 chromosomes, as confirmed by meiotic analyses, which showed 12 bivalents. Chromosome morphologies presented the same pattern for Scinax and Ololygon compared to species already... Tipo: Info:eu-repo/semantics/article Palavras-chave: Anura; Karyotype; Ololygon; Scinax. Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572018000500814 Distribuição espacial da variabilidade genética intrapopulacional de Dipteryx alata PAB Soares,Thannya Nascimento; Chaves,Lázaro José; Telles,Mariana Pires de Campos; Diniz-Filho,José Alexandre Felizola; Resende,Lucileide Vilela. O objetivo deste trabalho foi avaliar o padrão espacial da variabilidade genética entre plantas, dentro de três populações naturais de barueiro (Dipteryx alata Vogel), pela genotipagem por RAPD e técnicas de autocorrelação espacial. Os cinco iniciadores RAPD permitiram a codificação de 45 locos, utilizados nas análises de diversidade, estrutura e distribuição espacial da variabilidade genética entre populações. As populações apresentaram diversidade genética (Hs) com valor médio 0,314. Verificou-se que 12% da variação total se encontra entre as populações, o que indica que estas mantêm um considerável nível de variabilidade genética. Foi observada tendência de autocorrelação espacial positiva nas primeiras classes de distâncias, nas três populações, o que... Tipo: Info:eu-repo/semantics/article Palavras-chave: Autocorrelação espacial; Baru; Conservação; Estrutura familiar; Fluxo gênico; RAPD. Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2008000900008 Divergência entre subpopulações de cagaiteira (Eugenia dysenterica) em resposta a padrões edáficos e distribuição espacial PAB Telles,Mariana Pires de Campos; Silva,Rossana Serrato Mendonça; Chaves,Lázaro José; Coelho,Alexandre Siqueira Guedes; Diniz Filho,José Alexandre Felizola. A domesticação e a utilização de espécies nativas em sistemas de produção muitas vezes são inviabilizadas pela falta de conhecimento prévio sobre a variabilidade genética. Uma vez quantificada, esta variabilidade pode ser útil tanto para o melhoramento genético da espécie quanto em programas de conservação. O objetivo deste trabalho foi avaliar a diferenciação, com base em caracteres genéticos e fenotípicos, entre dez subpopulações de Eugenia dysenterica DC. nativas da região sudeste do Estado de Goiás. Foram utilizados testes de Mantel a fim de comparar os padrões de variação genética, com base em oito locos isoenzimáticos, e caracteres fenotípicos (caracteres morfológicos e demográficos), entre as subpopulações, e estabelecer suas relações com as... Tipo: Info:eu-repo/semantics/article Palavras-chave: Isoenzimas; Fenótipos; Variação genética; Fatores ambientais. Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2001001100009 Estrutura genética em populações naturais de Tibouchina papyrus (pau-papel) em áreas de campo rupestre no cerrado Rev. Bras. Bot. Telles,Mariana Pires de Campos; Silva,Sandra Pereira da; Ramos,Juliana Rosa; Soares,Thannya Nascimento; Melo,Dayane Borges; Resende,Lucileide Vilela; Batista,Eliane cotrim; Vasconcellos,Breno de Faria. O presente trabalho teve como objetivo utilizar marcadores RAPD para conhecer a variabilidade genética de populações de Tibouchina papyrus (Pohl) Toledo, provenientes da região de Serra Dourada e Serra dos Pirineus, no Estado de Goiás. Os seis iniciadores RAPD produziram um total de 147 locos, variando entre 23 e 26 por iniciador. A avaliação hierárquica da estruturação da variabilidade genética, realizada pela a AMOVA, considerando a existência de duas regiões (Serra dos Pirineus e Serra Dourada) apresentou uma estimativa de F ST = 0,3439. O valor do componente entre regiões (F CT) foi igual a 18,96% e a variação entre populações dentro de regiões igual a 15,43%. As estimativas de fluxo gênico sugerem a existência de uma baixa proporção de migrantes entre... Tipo: Info:eu-repo/semantics/article Palavras-chave: Cerrado; RAPD; Tibouchina papyrus; Variabilidade genética. Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042010000200010 Genetic diversity in populations of African mahogany (Khaya grandioliola C. DC.) introduced in Brazil Genet. Mol. Biol. Soares,Sabrina Delgado; Bandeira,Ludmila Ferreira; Ribeiro,Stela Barros; Telles,Mariana Pires de Campos; Silva,João Augusto da; Borges,Canrobert Tormin; Coelho,Alexandre Siqueira Guedes; Novaes,Evandro. Abstract Given its high-valued wood, the African mahogany (Khaya grandifoliola) has been envisaged as a renewable source of tropical hardwoods in Brazil. However, there are concerns about the hypothesized low diversity among the few K. grandifoliola germplasm sources introduced in the country. Using eight microsatellite markers, we evaluated the genetic diversity and divergence among 53 superior trees selected from three provenances of K. grandifoliola located in the state of Para. These populations are among the oldest plantations (>15 years) in Brazil and, therefore, the country's main seed sources. The average number of alleles per locus was 5.9, expected heterozygosity was moderate (^=0.56) and lower than the high observed heterozygosity (HO=0.74).... Tipo: Info:eu-repo/semantics/article Palavras-chave: Microsatellites; SSR; Genetic structure; Genetic divergence; Hardwood. Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572020000400301 Genetic variability in natural populations of Zeyheria montana mart. from the Brazilian Cerrado Scientia Agricola Bertoni,Bianca Waléria; Astolfi Filho,Spartaco; Martins,Ernani Ronie; Damião Filho,Carlos Ferreira; França,Suzelei de Castro; Pereira,Ana Maria Soares; Telles,Mariana Pires de Campos; Diniz Filho,José Alexandre F.. Zeyheria montana, an endemic species of the Bignoniaceae family from the Brazilian Cerrado's known for its anti-cancer properties, is widely used as imuno stimulant in the popular medicine and its therapeutic activity must be validated by scientific data. The objective of this work was to evaluate the genetic variability of eight plant populations collected within the state of São Paulo, Brazil, via Random Amplification of Polymorphic DNA (RAPD) used as molecular markers. After an optimized protocol for the amplification reaction, nine selected primers generated 105 reproducible bands, indicating up to 60% polymorphism. Analysis of molecular variance (AMOVA) revealed higher genetic variation within populations (84.03%) than among populations (15.97%). The... Tipo: Info:eu-repo/semantics/article Palavras-chave: Bignoniaceae; Germplasm bank; Bolsa-de-pastor; Conservation. Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000400012 Mantel test in population genetics Genet. Mol. Biol. Diniz-Filho,José Alexandre F.; Soares,Thannya N.; Lima,Jacqueline S.; Dobrovolski,Ricardo; Landeiro,Victor Lemes; Telles,Mariana Pires de Campos; Rangel,Thiago F.; Bini,Luis Mauricio. The comparison of genetic divergence or genetic distances, estimated by pairwise F ST and related statistics, with geographical distances by Mantel test is one of the most popular approaches to evaluate spatial processes driving population structure. There have been, however, recent criticisms and discussions on the statistical performance of the Mantel test. Simultaneously, alternative frameworks for data analyses are being proposed. Here, we review the Mantel test and its variations, including Mantel correlograms and partial correlations and regressions. For illustrative purposes, we studied spatial genetic divergence among 25 populations of Dipteryx alata ("Baru"), a tree species endemic to the Cerrado, the Brazilian savannas, based on 8 microsatellite... Tipo: Info:eu-repo/semantics/article Palavras-chave: "Baru" tree; Genetic distances; Geographical genetics; Partial correlation; Partial regression. Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572013000400002 Null expectation of spatial correlograms under a stochastic process of genetic divergence with small sample sizes Genet. Mol. Biol. Telles,Mariana Pires de Campos; Diniz-Filho,José Alexandre Felizola. An Ornstein-Uhlenbeck process was used to simulate the exponential relationship between genetic divergence and geographic distances, as predicted by stochastic processes of population differentiation, such as isolation-by-distance, stepping-stone or coalescence models. These simulations were based only on the spatial coordinates of the local populations that defined a spatial unweighted pair-group method using arithmetic averages (UPGMA) link among them. The simulated gene frequency surfaces were then analyzed using spatial autocorrelation procedures and Nei's genetic distances, constructed with different numbers of variables (gene frequencies). Stochastic divergence in space produced strong spatial patterns at univariate and mutivariate levels. Using a... Tipo: Info:eu-repo/semantics/article Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572000000400007 Optimization procedures for establishing reserve networks for biodiversity conservation taking into account population genetic structure Genet. Mol. Biol. Diniz Filho,José Alexandre Felizola; Telles,Mariana Pires de Campos. Conservation genetics has been focused on the ecological and evolutionary persistence of targets (species or other intraspecific units), especially when dealing with narrow-ranged species, and no generalized solution regarding the problem of where to concentrate conservation efforts for multiple genetic targets has yet been achieved. Broadly distributed and abundant species allow the identification of evolutionary significant units, management units, phylogeographical units or other spatial patterns in genetic variability, including those generated by effects of habitat fragmentation caused by human activities. However, these genetic units are rarely considered as priority conservation targets in regional conservation planning procedures. In this paper, we... Tipo: Info:eu-repo/semantics/article Palavras-chave: Biodiversity conservation; Population structure; Geographic genetics. Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572006000200004 Population structure of Eupemphix nattereri (Amphibia, Anura, Leiuperidae) from Central Brazil Genet. Mol. Biol. Silva,Daniela de Melo e; Cruz,Aparecido Divino da; Bastos,Rogério Pereira; Reis,Raquel Loren; Telles,Mariana Pires de Campos; Diniz-Filho,José Alexandre Felizola. This study reports on 156 specimens of the amphibian Eupemphix nattereri, a widely distributed leiuperid, obtained from 11 municipalities of central Brazil. The extent of genetic variation was quantified by determining the mean number of alleles per locus and the proportion of polymorphic loci. An analysis of molecular variance (AMOVA) was performed on the random amplified polymorphic DNA (RAPD) haplotypes. The genetic distances obtained by calculating pairwise phist among local samples were used to determine population relationships using the unweighted pair-group method (UPGMA) and non-metric multidimensional scaling (NMDS). The cophenetic correlation was calculated to confirm agreement between the genetic matrix and the unweighted pair group method with... Tipo: Info:eu-repo/semantics/article Palavras-chave: Eupemphix nattereri; Gene flow; Population structure; RAPD markers. Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000600022 Spatial pattern and genetic diversity estimates are linked in stochastic models of population differentiation Genet. Mol. Biol. Diniz-Filho,José Alexandre Felizola; Telles,Mariana Pires de Campos. In the present study, we used both simulations and real data set analyses to show that, under stochastic processes of population differentiation, the concepts of spatial heterogeneity and spatial pattern overlap. In these processes, the proportion of variation among and within a population (measured by G ST and 1 - G ST, respectively) is correlated with the slope and intercept of a Mantel's test relating genetic and geographic distances. Beyond the conceptual interest, the inspection of the relationship between population heterogeneity and spatial pattern can be used to test departures from stochasticity in the study of population differentiation. Tipo: Info:eu-repo/semantics/article Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572000000300007 Structure of the phenotypic variability of fruit and seed traits in natural populations of Eugenia dysenterica dc. (Myrtaceae) Rev. Bras. Frutic. Novaes,Carolina Ribeiro Diniz Boaventura; Mota,Elias Emanuel Silva; Novaes,Evandro; Telles,Mariana Pires de Campos; Chaves,Lázaro José. Abstract Eugenia dysenterica DC. (cagaita tree) is a fruit tree native to the Brazilian Cerrado. It is a promising species for cultivation, but little basic information exists on the phenotypic diversity and quantitative variation of its fruits and seeds at a population scale. Thus, the present study proposes to estimate the phenotypic parameters of the species’ fruits and seeds based on the variability among mother plants and among subpopulations, thereby aiming to increase knowledge for breeding and conservation of the species. For this, 25 natural subpopulations (local populations) were sampled in five Brazilian states. Within each subpopulation, 20 fruits were collected from each of six sampled mother plants. Data for biomass, transverse and... Tipo: Info:eu-repo/semantics/article Palavras-chave: Cagaita; Quantitative variation; Cerrado; Morphometric characterization; Plant genetic resources. Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452018000302001 Registros recuperados: 14 Primeira ... 1 ... Última

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