Mating system and genetic structure across all known populations of Dyckia brevifolia: A clonal, endemic, and endangered Rheophyte bromeliad
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | LOCUS Repositório Institucional da UFV |
Texto Completo: | https://doi.org/10.1093/jhered/esx011 http://www.locus.ufv.br/handle/123456789/12534 |
Resumo: | Dyckia brevifolia is an endemic rheophyte bromeliad that occurs exclusively in patches on rocky banks of the Itajaí-Açu River in southern Brazil. The genetic diversity of all known populations was carried out using allozyme markers and the total numbers of rosettes, reproductive rosettes, and clumps per population were characterized. The mating system was also investigated. Most rosettes were aggregated in groups, and the populations differed significantly in number of rosettes and reproductive rosettes per population. The outcrossing rate obtained was 8.2%, with predominant selfing. The populations presented an average of 1.4 alleles per locus and 27% of polymorphisms. The mean expected genetic diversity was 0.067. Downstream populations showed the highest genetic diversity which could be attributed to hydrochory (unidirectional river flow). Most genetic diversity is distributed among populations ( F ˆ = 0.402). Natural habitats of D. brevifolia are not recommended for the construction of hydroelectric plants given that it would seriously complicate in situ conservation of this species. Based on the results of this study, it can be concluded that between 35 and 161 reproductive rosettes must be collected for effective ex situ conservation, depending on the targeted population, or seeds collected from 157 seed-rosettes per population. |
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Mating system and genetic structure across all known populations of Dyckia brevifolia: A clonal, endemic, and endangered Rheophyte bromeliadAllozymeConservationFounder eventGenetic diversityMetapopulationSelfingDyckia brevifolia is an endemic rheophyte bromeliad that occurs exclusively in patches on rocky banks of the Itajaí-Açu River in southern Brazil. The genetic diversity of all known populations was carried out using allozyme markers and the total numbers of rosettes, reproductive rosettes, and clumps per population were characterized. The mating system was also investigated. Most rosettes were aggregated in groups, and the populations differed significantly in number of rosettes and reproductive rosettes per population. The outcrossing rate obtained was 8.2%, with predominant selfing. The populations presented an average of 1.4 alleles per locus and 27% of polymorphisms. The mean expected genetic diversity was 0.067. Downstream populations showed the highest genetic diversity which could be attributed to hydrochory (unidirectional river flow). Most genetic diversity is distributed among populations ( F ˆ = 0.402). Natural habitats of D. brevifolia are not recommended for the construction of hydroelectric plants given that it would seriously complicate in situ conservation of this species. Based on the results of this study, it can be concluded that between 35 and 161 reproductive rosettes must be collected for effective ex situ conservation, depending on the targeted population, or seeds collected from 157 seed-rosettes per population.Journal of Heredity2017-10-30T16:42:10Z2017-10-30T16:42:10Z2017-02-10info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlepdfapplication/pdf1465-7333https://doi.org/10.1093/jhered/esx011http://www.locus.ufv.br/handle/123456789/12534engVolume 108, Issue 3, Pages 299–307,May, 2017Rogalski, Juliana MarciaReis, AdemirRogalski, MarceloMontagna, TiagoReis, Maurício Sedrez dosinfo:eu-repo/semantics/openAccessreponame:LOCUS Repositório Institucional da UFVinstname:Universidade Federal de Viçosa (UFV)instacron:UFV2024-07-12T07:14:16Zoai:locus.ufv.br:123456789/12534Repositório InstitucionalPUBhttps://www.locus.ufv.br/oai/requestfabiojreis@ufv.bropendoar:21452024-07-12T07:14:16LOCUS Repositório Institucional da UFV - Universidade Federal de Viçosa (UFV)false |
dc.title.none.fl_str_mv |
Mating system and genetic structure across all known populations of Dyckia brevifolia: A clonal, endemic, and endangered Rheophyte bromeliad |
title |
Mating system and genetic structure across all known populations of Dyckia brevifolia: A clonal, endemic, and endangered Rheophyte bromeliad |
spellingShingle |
Mating system and genetic structure across all known populations of Dyckia brevifolia: A clonal, endemic, and endangered Rheophyte bromeliad Rogalski, Juliana Marcia Allozyme Conservation Founder event Genetic diversity Metapopulation Selfing |
title_short |
Mating system and genetic structure across all known populations of Dyckia brevifolia: A clonal, endemic, and endangered Rheophyte bromeliad |
title_full |
Mating system and genetic structure across all known populations of Dyckia brevifolia: A clonal, endemic, and endangered Rheophyte bromeliad |
title_fullStr |
Mating system and genetic structure across all known populations of Dyckia brevifolia: A clonal, endemic, and endangered Rheophyte bromeliad |
title_full_unstemmed |
Mating system and genetic structure across all known populations of Dyckia brevifolia: A clonal, endemic, and endangered Rheophyte bromeliad |
title_sort |
Mating system and genetic structure across all known populations of Dyckia brevifolia: A clonal, endemic, and endangered Rheophyte bromeliad |
author |
Rogalski, Juliana Marcia |
author_facet |
Rogalski, Juliana Marcia Reis, Ademir Rogalski, Marcelo Montagna, Tiago Reis, Maurício Sedrez dos |
author_role |
author |
author2 |
Reis, Ademir Rogalski, Marcelo Montagna, Tiago Reis, Maurício Sedrez dos |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Rogalski, Juliana Marcia Reis, Ademir Rogalski, Marcelo Montagna, Tiago Reis, Maurício Sedrez dos |
dc.subject.por.fl_str_mv |
Allozyme Conservation Founder event Genetic diversity Metapopulation Selfing |
topic |
Allozyme Conservation Founder event Genetic diversity Metapopulation Selfing |
description |
Dyckia brevifolia is an endemic rheophyte bromeliad that occurs exclusively in patches on rocky banks of the Itajaí-Açu River in southern Brazil. The genetic diversity of all known populations was carried out using allozyme markers and the total numbers of rosettes, reproductive rosettes, and clumps per population were characterized. The mating system was also investigated. Most rosettes were aggregated in groups, and the populations differed significantly in number of rosettes and reproductive rosettes per population. The outcrossing rate obtained was 8.2%, with predominant selfing. The populations presented an average of 1.4 alleles per locus and 27% of polymorphisms. The mean expected genetic diversity was 0.067. Downstream populations showed the highest genetic diversity which could be attributed to hydrochory (unidirectional river flow). Most genetic diversity is distributed among populations ( F ˆ = 0.402). Natural habitats of D. brevifolia are not recommended for the construction of hydroelectric plants given that it would seriously complicate in situ conservation of this species. Based on the results of this study, it can be concluded that between 35 and 161 reproductive rosettes must be collected for effective ex situ conservation, depending on the targeted population, or seeds collected from 157 seed-rosettes per population. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-10-30T16:42:10Z 2017-10-30T16:42:10Z 2017-02-10 |
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 |
1465-7333 https://doi.org/10.1093/jhered/esx011 http://www.locus.ufv.br/handle/123456789/12534 |
identifier_str_mv |
1465-7333 |
url |
https://doi.org/10.1093/jhered/esx011 http://www.locus.ufv.br/handle/123456789/12534 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Volume 108, Issue 3, Pages 299–307,May, 2017 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
pdf application/pdf |
dc.publisher.none.fl_str_mv |
Journal of Heredity |
publisher.none.fl_str_mv |
Journal of Heredity |
dc.source.none.fl_str_mv |
reponame:LOCUS Repositório Institucional da UFV instname:Universidade Federal de Viçosa (UFV) instacron:UFV |
instname_str |
Universidade Federal de Viçosa (UFV) |
instacron_str |
UFV |
institution |
UFV |
reponame_str |
LOCUS Repositório Institucional da UFV |
collection |
LOCUS Repositório Institucional da UFV |
repository.name.fl_str_mv |
LOCUS Repositório Institucional da UFV - Universidade Federal de Viçosa (UFV) |
repository.mail.fl_str_mv |
fabiojreis@ufv.br |
_version_ |
1817559911256555520 |