Genetic structure and diversity of populations of polyploid Tibouchina pulchra Cogn. (Melastomataceae) under different environmental conditions in extremes of an elevational gradient
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1007/s11295-016-1059-y http://hdl.handle.net/11449/169005 |
Resumo: | The genetic structure and diversity of plants may change significantly in an elevational gradient because different elevations regulate different ecological conditions. Several factors may influence genetic variation, such as mutations, selection, genetic drift, and gene flow. The aim of the present study was to evaluate the genetic structure and diversity of populations of Tibouchina pulchra Cogn. (Melastomataceae) trees in two extremes of an elevational gradient experiencing different environmental conditions. Nine polymorphic microsatellite loci were used to measure the genetic diversity of 14 adult populations, whose structure was evaluated using frequentist and Bayesian analyses. We also carried out progeny structure and paternity analyses comparing the number of fathers of each progeny and the probability of the progeny genotypes to be the result of selfing in order to evaluate the possible current processes leading to such genetic structure. Genetic structure analyses indicated the existence of genetic differentiation between populations in adults and progenies, but with a contact interface between them. The population from the higher region showed smaller genetic diversity when compared to the population at the lower region. However, the pollen variability delivered to the stigmas at the higher region was not different from that of the lower region. These results may be explained by the dynamics of gene flow mediated by pollen, especially by the different amounts of pollination events in each region, as well as local adaptation, distribution, and reproduction characteristics of T. pulchra. |
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Genetic structure and diversity of populations of polyploid Tibouchina pulchra Cogn. (Melastomataceae) under different environmental conditions in extremes of an elevational gradientAtlantic rainforestManac�-da-SerraPollen flowPolyploidySerra do MarThe genetic structure and diversity of plants may change significantly in an elevational gradient because different elevations regulate different ecological conditions. Several factors may influence genetic variation, such as mutations, selection, genetic drift, and gene flow. The aim of the present study was to evaluate the genetic structure and diversity of populations of Tibouchina pulchra Cogn. (Melastomataceae) trees in two extremes of an elevational gradient experiencing different environmental conditions. Nine polymorphic microsatellite loci were used to measure the genetic diversity of 14 adult populations, whose structure was evaluated using frequentist and Bayesian analyses. We also carried out progeny structure and paternity analyses comparing the number of fathers of each progeny and the probability of the progeny genotypes to be the result of selfing in order to evaluate the possible current processes leading to such genetic structure. Genetic structure analyses indicated the existence of genetic differentiation between populations in adults and progenies, but with a contact interface between them. The population from the higher region showed smaller genetic diversity when compared to the population at the lower region. However, the pollen variability delivered to the stigmas at the higher region was not different from that of the lower region. These results may be explained by the dynamics of gene flow mediated by pollen, especially by the different amounts of pollination events in each region, as well as local adaptation, distribution, and reproduction characteristics of T. pulchra.Institute of Biology Federal University of Uberl�ndiaPrograma de P�s Gradua��o em Biologia Vegetal Laborat�rio de Biossistem�tica Department of Plant Biology Institute of Biology University of CampinasCenter for Molecular Biology and Genetic Engineering (CBMEG) University of CampinasS�o Paulo Agency for Agribusiness TechnologyBiosciences Institute - Coastal Campus - S�o Paulo State University - UNESPEMBRAPA Southeast Livestock Brazilian Agricultural Research CorporationPrograma de P�s Gradua��o em Ecologia Department of Animal Biology Institute of Biology University of CampinasDepartment of Plant Biology Institute of Biology University of CampinasBiosciences Institute - Coastal Campus - S�o Paulo State University - UNESPFederal University of Uberl�ndiaUniversidade Estadual de Campinas (UNICAMP)S�o Paulo Agency for Agribusiness TechnologyUniversidade Estadual Paulista (Unesp)Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA)Brito, Vin�cius L. G.Mori, Gustavo M. [UNESP]Vigna, Bianca B. Z.Azevedo-Silva, MarianneSouza, Anete P.Sazima, Marlies2018-12-11T16:43:58Z2018-12-11T16:43:58Z2016-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://dx.doi.org/10.1007/s11295-016-1059-yTree Genetics and Genomes, v. 12, n. 6, 2016.1614-29501614-2942http://hdl.handle.net/11449/16900510.1007/s11295-016-1059-y2-s2.0-849908186322-s2.0-84990818632.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengTree Genetics and Genomes0,9590,959info:eu-repo/semantics/openAccess2023-12-11T06:14:27Zoai:repositorio.unesp.br:11449/169005Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-12-11T06:14:27Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Genetic structure and diversity of populations of polyploid Tibouchina pulchra Cogn. (Melastomataceae) under different environmental conditions in extremes of an elevational gradient |
title |
Genetic structure and diversity of populations of polyploid Tibouchina pulchra Cogn. (Melastomataceae) under different environmental conditions in extremes of an elevational gradient |
spellingShingle |
Genetic structure and diversity of populations of polyploid Tibouchina pulchra Cogn. (Melastomataceae) under different environmental conditions in extremes of an elevational gradient Brito, Vin�cius L. G. Atlantic rainforest Manac�-da-Serra Pollen flow Polyploidy Serra do Mar |
title_short |
Genetic structure and diversity of populations of polyploid Tibouchina pulchra Cogn. (Melastomataceae) under different environmental conditions in extremes of an elevational gradient |
title_full |
Genetic structure and diversity of populations of polyploid Tibouchina pulchra Cogn. (Melastomataceae) under different environmental conditions in extremes of an elevational gradient |
title_fullStr |
Genetic structure and diversity of populations of polyploid Tibouchina pulchra Cogn. (Melastomataceae) under different environmental conditions in extremes of an elevational gradient |
title_full_unstemmed |
Genetic structure and diversity of populations of polyploid Tibouchina pulchra Cogn. (Melastomataceae) under different environmental conditions in extremes of an elevational gradient |
title_sort |
Genetic structure and diversity of populations of polyploid Tibouchina pulchra Cogn. (Melastomataceae) under different environmental conditions in extremes of an elevational gradient |
author |
Brito, Vin�cius L. G. |
author_facet |
Brito, Vin�cius L. G. Mori, Gustavo M. [UNESP] Vigna, Bianca B. Z. Azevedo-Silva, Marianne Souza, Anete P. Sazima, Marlies |
author_role |
author |
author2 |
Mori, Gustavo M. [UNESP] Vigna, Bianca B. Z. Azevedo-Silva, Marianne Souza, Anete P. Sazima, Marlies |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Federal University of Uberl�ndia Universidade Estadual de Campinas (UNICAMP) S�o Paulo Agency for Agribusiness Technology Universidade Estadual Paulista (Unesp) Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA) |
dc.contributor.author.fl_str_mv |
Brito, Vin�cius L. G. Mori, Gustavo M. [UNESP] Vigna, Bianca B. Z. Azevedo-Silva, Marianne Souza, Anete P. Sazima, Marlies |
dc.subject.por.fl_str_mv |
Atlantic rainforest Manac�-da-Serra Pollen flow Polyploidy Serra do Mar |
topic |
Atlantic rainforest Manac�-da-Serra Pollen flow Polyploidy Serra do Mar |
description |
The genetic structure and diversity of plants may change significantly in an elevational gradient because different elevations regulate different ecological conditions. Several factors may influence genetic variation, such as mutations, selection, genetic drift, and gene flow. The aim of the present study was to evaluate the genetic structure and diversity of populations of Tibouchina pulchra Cogn. (Melastomataceae) trees in two extremes of an elevational gradient experiencing different environmental conditions. Nine polymorphic microsatellite loci were used to measure the genetic diversity of 14 adult populations, whose structure was evaluated using frequentist and Bayesian analyses. We also carried out progeny structure and paternity analyses comparing the number of fathers of each progeny and the probability of the progeny genotypes to be the result of selfing in order to evaluate the possible current processes leading to such genetic structure. Genetic structure analyses indicated the existence of genetic differentiation between populations in adults and progenies, but with a contact interface between them. The population from the higher region showed smaller genetic diversity when compared to the population at the lower region. However, the pollen variability delivered to the stigmas at the higher region was not different from that of the lower region. These results may be explained by the dynamics of gene flow mediated by pollen, especially by the different amounts of pollination events in each region, as well as local adaptation, distribution, and reproduction characteristics of T. pulchra. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-12-01 2018-12-11T16:43:58Z 2018-12-11T16:43:58Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1007/s11295-016-1059-y Tree Genetics and Genomes, v. 12, n. 6, 2016. 1614-2950 1614-2942 http://hdl.handle.net/11449/169005 10.1007/s11295-016-1059-y 2-s2.0-84990818632 2-s2.0-84990818632.pdf |
url |
http://dx.doi.org/10.1007/s11295-016-1059-y http://hdl.handle.net/11449/169005 |
identifier_str_mv |
Tree Genetics and Genomes, v. 12, n. 6, 2016. 1614-2950 1614-2942 10.1007/s11295-016-1059-y 2-s2.0-84990818632 2-s2.0-84990818632.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Tree Genetics and Genomes 0,959 0,959 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1799965246927929344 |