Diversidad genética en plantas acuáticas de Egeria densa y E. najas en el lago de Jupiá
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng spa |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.4067/S0718-16202012000200008 http://hdl.handle.net/11449/226946 |
Resumo: | The aquatic plant species Egeria densa (Planch.) Casp and E. najas Planchon occur naturally in the Paraná River Basin of southeastern Brazil. Hydroelectric dam construction in the river basin has created several lakes, changing the ecology of the river and altering the population ecology of Egeria. Large, dense populations of Egeria now grow in Jupiá Lake and its tributaries, occasionally blocking hydroelectric turbines. This study is part of a larger project examining environmental changes associated with large dam projects; the research objective of this study was to assess patterns of genetic diversity in Egeria populations growing in Jupiá and Três Irmãos Lakes and their Paraná River tributaries using genetic markers. Forty-two plants of E. najas and 46 of E. densa (for a total of 88 samples) were collected from 13 sites. Genotypes were identified by isoenzymes and Random Amplification of Polymorphic DNA RAPD markers. Using a genetic distance dendrogram we grouped all E. densa plants into one set and all E. najas plants into another set. The plant sample 8a, which presented intermediary morphological characteristics of both species, also presented intermediary genetic characteristics, indicating the possibility that gene introgression between these Egeria species may occur. The creation of Três Irmãos Lake appears to have increased some measures of genetic diversity in Egeria populations by facilitating outcrossing among previously semiisolated genotypes. Increased migration of large numbers of seeds and vegetative branches of E. densa and E. najas into Jupiá Lake and its tributaries can account for most of the changes in patterning of genetic diversity observed in these populations of Egeria. |
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Diversidad genética en plantas acuáticas de Egeria densa y E. najas en el lago de JupiáGenetic diversity in Egeria densa and E. najas in Jupiá Reservoir, BrazilDamEgeriaGenetic distanceIsoenzymeRAPDReservoirThe aquatic plant species Egeria densa (Planch.) Casp and E. najas Planchon occur naturally in the Paraná River Basin of southeastern Brazil. Hydroelectric dam construction in the river basin has created several lakes, changing the ecology of the river and altering the population ecology of Egeria. Large, dense populations of Egeria now grow in Jupiá Lake and its tributaries, occasionally blocking hydroelectric turbines. This study is part of a larger project examining environmental changes associated with large dam projects; the research objective of this study was to assess patterns of genetic diversity in Egeria populations growing in Jupiá and Três Irmãos Lakes and their Paraná River tributaries using genetic markers. Forty-two plants of E. najas and 46 of E. densa (for a total of 88 samples) were collected from 13 sites. Genotypes were identified by isoenzymes and Random Amplification of Polymorphic DNA RAPD markers. Using a genetic distance dendrogram we grouped all E. densa plants into one set and all E. najas plants into another set. The plant sample 8a, which presented intermediary morphological characteristics of both species, also presented intermediary genetic characteristics, indicating the possibility that gene introgression between these Egeria species may occur. The creation of Três Irmãos Lake appears to have increased some measures of genetic diversity in Egeria populations by facilitating outcrossing among previously semiisolated genotypes. Increased migration of large numbers of seeds and vegetative branches of E. densa and E. najas into Jupiá Lake and its tributaries can account for most of the changes in patterning of genetic diversity observed in these populations of Egeria.Departamento de Produção Vegetal Faculdade de Ciências Agronômicas Universidade Estadual Paulista Júlio de Mesquita Filho, Rua Dr. José Barbosa de Barros, 1780, CEP18610-307 - Botucatu, SPDepartamento de Genética Instituto de Biociências Universidade Estadual Paulista Júlio de Mesquita Filho, Distrito de Rubião Junior, S/N, CEP 18618-970 - Botucatu, SPDepartamento de Ciências Florestais Universidade Federal de Sergipe, Av. Marechal Rondon, s/n, Jardim Rosa Elze, CEP 49100-000 - São Cristóvão, SEDepartment of Forest and Wildlife Ecology University of Wisconsin - Madison, 1630 Linden Dr, Madison, WI 53706Departamento de Produção Vegetal Faculdade de Ciências Agronômicas Universidade Estadual Paulista Júlio de Mesquita Filho, Rua Dr. José Barbosa de Barros, 1780, CEP18610-307 - Botucatu, SPDepartamento de Genética Instituto de Biociências Universidade Estadual Paulista Júlio de Mesquita Filho, Distrito de Rubião Junior, S/N, CEP 18618-970 - Botucatu, SPUniversidade Estadual Paulista (UNESP)Universidade Federal de Sergipe (UFS)University of Wisconsin - MadisonMori, Edson S. [UNESP]Martins, Dagoberto [UNESP]Velini, Edivaldo D. [UNESP]Marino, Celso L. [UNESP]Gouvêa, Cantídio F.Leite, Suzi M.M. [UNESP]Camacho, Edwin [UNESP]Guries, Raymond P.2022-04-29T04:35:19Z2022-04-29T04:35:19Z2012-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article321-330http://dx.doi.org/10.4067/S0718-16202012000200008Ciencia e Investigacion Agraria, v. 39, n. 2, p. 321-330, 2012.0718-16200304-5609http://hdl.handle.net/11449/22694610.4067/S0718-162020120002000082-s2.0-84865373638Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengspaCiencia e Investigacion Agrariainfo:eu-repo/semantics/openAccess2024-04-30T15:59:55Zoai:repositorio.unesp.br:11449/226946Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T23:48:22.888871Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Diversidad genética en plantas acuáticas de Egeria densa y E. najas en el lago de Jupiá Genetic diversity in Egeria densa and E. najas in Jupiá Reservoir, Brazil |
title |
Diversidad genética en plantas acuáticas de Egeria densa y E. najas en el lago de Jupiá |
spellingShingle |
Diversidad genética en plantas acuáticas de Egeria densa y E. najas en el lago de Jupiá Mori, Edson S. [UNESP] Dam Egeria Genetic distance Isoenzyme RAPD Reservoir |
title_short |
Diversidad genética en plantas acuáticas de Egeria densa y E. najas en el lago de Jupiá |
title_full |
Diversidad genética en plantas acuáticas de Egeria densa y E. najas en el lago de Jupiá |
title_fullStr |
Diversidad genética en plantas acuáticas de Egeria densa y E. najas en el lago de Jupiá |
title_full_unstemmed |
Diversidad genética en plantas acuáticas de Egeria densa y E. najas en el lago de Jupiá |
title_sort |
Diversidad genética en plantas acuáticas de Egeria densa y E. najas en el lago de Jupiá |
author |
Mori, Edson S. [UNESP] |
author_facet |
Mori, Edson S. [UNESP] Martins, Dagoberto [UNESP] Velini, Edivaldo D. [UNESP] Marino, Celso L. [UNESP] Gouvêa, Cantídio F. Leite, Suzi M.M. [UNESP] Camacho, Edwin [UNESP] Guries, Raymond P. |
author_role |
author |
author2 |
Martins, Dagoberto [UNESP] Velini, Edivaldo D. [UNESP] Marino, Celso L. [UNESP] Gouvêa, Cantídio F. Leite, Suzi M.M. [UNESP] Camacho, Edwin [UNESP] Guries, Raymond P. |
author2_role |
author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) Universidade Federal de Sergipe (UFS) University of Wisconsin - Madison |
dc.contributor.author.fl_str_mv |
Mori, Edson S. [UNESP] Martins, Dagoberto [UNESP] Velini, Edivaldo D. [UNESP] Marino, Celso L. [UNESP] Gouvêa, Cantídio F. Leite, Suzi M.M. [UNESP] Camacho, Edwin [UNESP] Guries, Raymond P. |
dc.subject.por.fl_str_mv |
Dam Egeria Genetic distance Isoenzyme RAPD Reservoir |
topic |
Dam Egeria Genetic distance Isoenzyme RAPD Reservoir |
description |
The aquatic plant species Egeria densa (Planch.) Casp and E. najas Planchon occur naturally in the Paraná River Basin of southeastern Brazil. Hydroelectric dam construction in the river basin has created several lakes, changing the ecology of the river and altering the population ecology of Egeria. Large, dense populations of Egeria now grow in Jupiá Lake and its tributaries, occasionally blocking hydroelectric turbines. This study is part of a larger project examining environmental changes associated with large dam projects; the research objective of this study was to assess patterns of genetic diversity in Egeria populations growing in Jupiá and Três Irmãos Lakes and their Paraná River tributaries using genetic markers. Forty-two plants of E. najas and 46 of E. densa (for a total of 88 samples) were collected from 13 sites. Genotypes were identified by isoenzymes and Random Amplification of Polymorphic DNA RAPD markers. Using a genetic distance dendrogram we grouped all E. densa plants into one set and all E. najas plants into another set. The plant sample 8a, which presented intermediary morphological characteristics of both species, also presented intermediary genetic characteristics, indicating the possibility that gene introgression between these Egeria species may occur. The creation of Três Irmãos Lake appears to have increased some measures of genetic diversity in Egeria populations by facilitating outcrossing among previously semiisolated genotypes. Increased migration of large numbers of seeds and vegetative branches of E. densa and E. najas into Jupiá Lake and its tributaries can account for most of the changes in patterning of genetic diversity observed in these populations of Egeria. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-01-01 2022-04-29T04:35:19Z 2022-04-29T04:35:19Z |
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/10.4067/S0718-16202012000200008 Ciencia e Investigacion Agraria, v. 39, n. 2, p. 321-330, 2012. 0718-1620 0304-5609 http://hdl.handle.net/11449/226946 10.4067/S0718-16202012000200008 2-s2.0-84865373638 |
url |
http://dx.doi.org/10.4067/S0718-16202012000200008 http://hdl.handle.net/11449/226946 |
identifier_str_mv |
Ciencia e Investigacion Agraria, v. 39, n. 2, p. 321-330, 2012. 0718-1620 0304-5609 10.4067/S0718-16202012000200008 2-s2.0-84865373638 |
dc.language.iso.fl_str_mv |
eng spa |
language |
eng spa |
dc.relation.none.fl_str_mv |
Ciencia e Investigacion Agraria |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
321-330 |
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 |
|
_version_ |
1808129553423400960 |