caa a22 4500 44584549X CHVBK 20180317145357.0 cr unu---uuuuu 170323e20110401xx s 000 0 eng 10.1007/s10709-011-9561-5 doi (NATIONALLICENCE)springer-10.1007/s10709-011-9561-5 Genetic structure and variability of the endemic and vulnerable Vellozia gigantea (Velloziaceae) associated with the landscape in the Espinhaço Range, in southeastern Brazil: implications for conservation [Elektronische Daten] [Júnia Lousada, Eduardo Borba, Katia Ribeiro, Leonardo Ribeiro, Maria Lovato] The Espinhaço Range, in eastern Brazil, has a peculiar landscape that has influenced the vegetation pattern of the region because of its valleys, canyons, ranges and disjunct rock outcrops found at high elevations. In this region, the vegetation type known as campos rupestres (rupestrian fields), which occurs in the disjunct outcrops, has high levels of species richness and endemism. Vellozia gigantea, a 6-m tall dracenoid monocot, is a vulnerable species endemic to this vegetation and has a narrow distribution that extends approximately 27km. This region is located in a disturbed area, where populations are divided into three geographical groups, separated by a canyon and a valley. For this study, we used ISSR markers to measure the genetic diversity of the species and test the hypothesis that the canyon and the valley constitute geographical barriers to gene flow in V. gigantea. Nine populations and 173 individuals were analyzed using nine ISSR primers, which produced 89 fragments. In spite of being a vulnerable species with a narrow distribution, the populations of V. gigantea have high genetic diversity (mean percentage of polymorphic loci=56.6%; mean Shannon's index of diversity=0.278; mean expected heterozygosity=0.183). Genetic divergence among populations was high (ΦST=0.28), and principal coordinate, neighborjoining and Bayesian analyses showed that only the canyon may constitute a partial barrier to gene flow in this species. Groups of populations separated by the canyon should be managed separately because they contain different gene pools. Springer Science+Business Media B.V., 2011 Velloziaceae nationallicence Espinhaço Range nationallicence Campos rupestres nationallicence Conservation genetics nationallicence Threatened species nationallicence Genetic structure nationallicence Lousada Júnia Departamento de Biologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Caixa Postal 486, 31270-901, Belo Horizonte, MG, Brazil aut Borba Eduardo Departamento de Botânica, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Caixa Postal 486, 31270-901, Belo Horizonte, MG, Brazil aut Ribeiro Katia Instituto Chico Mendes de Conservação da Biodiversidade, Coordenação Geral de Pesquisa, SQSW 103/104, Sudoeste, 70670-350, Brasília, DF, Brazil aut Ribeiro Leonardo Departamento de Biologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Caixa Postal 486, 31270-901, Belo Horizonte, MG, Brazil aut Lovato Maria Departamento de Biologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Caixa Postal 486, 31270-901, Belo Horizonte, MG, Brazil aut Genetica Springer Netherlands 139/4(2011-04-01), 431-440 0016-6707 139:4<431 2011 139 10709 https://doi.org/10.1007/s10709-011-9561-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10709-011-9561-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lousada Júnia Departamento de Biologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Caixa Postal 486, 31270-901, Belo Horizonte, MG, Brazil aut NATIONALLICENCE 700 1- Borba Eduardo Departamento de Botânica, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Caixa Postal 486, 31270-901, Belo Horizonte, MG, Brazil aut NATIONALLICENCE 700 1- Ribeiro Katia Instituto Chico Mendes de Conservação da Biodiversidade, Coordenação Geral de Pesquisa, SQSW 103/104, Sudoeste, 70670-350, Brasília, DF, Brazil aut NATIONALLICENCE 700 1- Ribeiro Leonardo Departamento de Biologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Caixa Postal 486, 31270-901, Belo Horizonte, MG, Brazil aut NATIONALLICENCE 700 1- Lovato Maria Departamento de Biologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Caixa Postal 486, 31270-901, Belo Horizonte, MG, Brazil aut NATIONALLICENCE 773 0- Genetica Springer Netherlands 139/4(2011-04-01), 431-440 0016-6707 139:4<431 2011 139 10709 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer