Genetic diversity in Egeria densa and E. najas in Jupia Reservoir, Brazil

Detalhes bibliográficos
Autor(a) principal: Mori, Edson Seizo [UNESP]
Data de Publicação: 2012
Outros Autores: Martins, Dagoberto [UNESP], Velini, Edivaldo Domingues [UNESP], Marino, Celso L. [UNESP], Gouvea, Cantidio F., Leite, Suzi M. M. [UNESP], Camacho, Edwin [UNESP], Guries, Raymond P.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.4067/S0718-16202012000200008
http://hdl.handle.net/11449/17964
Resumo: E.S. Mori, D. Martins, E.D. Velini, C.L. Marino, C.F. Gouvea, S.M.M. Leite, E. Camacho Palomino, and R.P. Curies. 2012. Genetic diversity in Egeria densa and E. najas in Jupia Reservoir, Brazil. Cien. Inv. Agr. 39(2):321-330. The aquatic plant species Egeria densa (Planch.) Casp and E. najas Planchon occur naturally in the Parana 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 Jupia 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 Jupia and Tres Irmaos Lakes and their Parana 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 Tres Irmaos Lake appears to have increased some measures of genetic diversity in Egeria populations by facilitating outcrossing among previously semi-isolated genotypes. Increased migration of large numbers of seeds and vegetative branches of E. densa and E. najas into Jupia 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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spelling Genetic diversity in Egeria densa and E. najas in Jupia Reservoir, BrazilDiversidad genética en plantas acuáticas de Egeria densa y E. najas en el lago de JupiáEgeriadamisoenzymegenetic distanceRAPDreservoirE.S. Mori, D. Martins, E.D. Velini, C.L. Marino, C.F. Gouvea, S.M.M. Leite, E. Camacho Palomino, and R.P. Curies. 2012. Genetic diversity in Egeria densa and E. najas in Jupia Reservoir, Brazil. Cien. Inv. Agr. 39(2):321-330. The aquatic plant species Egeria densa (Planch.) Casp and E. najas Planchon occur naturally in the Parana 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 Jupia 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 Jupia and Tres Irmaos Lakes and their Parana 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 Tres Irmaos Lake appears to have increased some measures of genetic diversity in Egeria populations by facilitating outcrossing among previously semi-isolated genotypes. Increased migration of large numbers of seeds and vegetative branches of E. densa and E. najas into Jupia Lake and its tributaries can account for most of the changes in patterning of genetic diversity observed in these populations of Egeria.Las especies acuáticas de Egeria densa y E. najas ocurren naturalmente en la Cuenca del Río Paraná, sudeste del Brasil. La construcción de una represa hidroeléctrica en la cuenca de este río, creó varios lagos, cambiando la ecología del río y alterando la populación ecológica de Egeria. Grandes y densas poblaciones de Egeria crecen hoy en día en el lago de Jupiá y sus afluentes, bloqueando de vez en cuando las turbinas de la hidroeléctrica. Como parte de un estudio de cambios ambientales, asociados a grandes proyectos de represas, fueron usados marcadores moleculares para determinar patrones de diversidad genética en las poblaciones de Egeria que crecen en los lagos de Jupiá, Três Irmãos y sus afluentes del Río Paraná. En un total de 13 sitios, fueran colectadas 42 plantas de E. najas y 46 de E. densa, que suman un total de 88 muestras. Los genotipos fueron identificados por marcadores de isoenzimas y RAPD. A través de dendrogramas de distancia genética se agruparon por separado todas las plantas de E. densa y de E. najas. La muestra 8a presentó plantas con características morfológicas e genéticas intermediarias de ambas las especies, indicando haber posibilidades de introgresión de genes entre ambas las especies de Egeria. La creación del lago de Três Irmãos parece haber aumentado, en alguna medida, la diversidad genética de las populaciones de Egeria por la facilidad de cruzamientos entre genotipos, hasta entonces semi-aislados. La migración creciente de grandes cantidades de semillas y de partes vegetativas de Egeria densa y Egeria najas dentro del Lago Jupiá y sus afluentes, pueden explicar los cambios observados en los patrones de diversidad genética en estas populaciones de Egeria.CESP CompanyFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Fundação para o Desenvolvimento da UNESP (FUNDUNESP)Univ Estadual Paulista, Fac Ciencias Agron, Dept Prod Vegetal, BR-18610307 Botucatu, SP, BrazilUniv Estadual Paulista, Inst Biociencias, Dept Genet, BR-18618970 Botucatu, SP, BrazilUniv Fed Sergipe, Dept Ciencias Florestais, BR-49100000 Sao Cristovao, SE, BrazilUniv Wisconsin, Dept Forest & Wildlife Ecol, Madison, WI 53706 USAUniv Estadual Paulista, Fac Ciencias Agron, Dept Prod Vegetal, BR-18610307 Botucatu, SP, BrazilUniv Estadual Paulista, Inst Biociencias, Dept Genet, BR-18618970 Botucatu, SP, BrazilPontificia Univ Catolica Chile, Fac Agronomia Ingenieria ForestalUniversidade Estadual Paulista (Unesp)Universidade Federal de Sergipe (UFS)Univ WisconsinMori, Edson Seizo [UNESP]Martins, Dagoberto [UNESP]Velini, Edivaldo Domingues [UNESP]Marino, Celso L. [UNESP]Gouvea, Cantidio F.Leite, Suzi M. M. [UNESP]Camacho, Edwin [UNESP]Guries, Raymond P.2014-05-20T13:50:20Z2014-05-20T13:50:20Z2012-05-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article321-330application/pdfhttp://dx.doi.org/10.4067/S0718-16202012000200008Ciência e Investigacion Agraria. Santiago: Pontificia Univ Catolica Chile, Fac Agronomia Ingenieria Forestal, v. 39, n. 2, p. 321-330, 2012.0718-1620http://hdl.handle.net/11449/17964S0718-16202012000200008WOS:000307986500008S0718-16202012000200008-en.pdf985549344816170201653487382083190000-0003-0431-59420000-0003-4524-954XWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengCiência e Investigación Agraria0.337info:eu-repo/semantics/openAccess2024-04-30T15:56:54Zoai:repositorio.unesp.br:11449/17964Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T18:39:17.365338Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Genetic diversity in Egeria densa and E. najas in Jupia Reservoir, Brazil
Diversidad genética en plantas acuáticas de Egeria densa y E. najas en el lago de Jupiá
title Genetic diversity in Egeria densa and E. najas in Jupia Reservoir, Brazil
spellingShingle Genetic diversity in Egeria densa and E. najas in Jupia Reservoir, Brazil
Mori, Edson Seizo [UNESP]
Egeria
dam
isoenzyme
genetic distance
RAPD
reservoir
title_short Genetic diversity in Egeria densa and E. najas in Jupia Reservoir, Brazil
title_full Genetic diversity in Egeria densa and E. najas in Jupia Reservoir, Brazil
title_fullStr Genetic diversity in Egeria densa and E. najas in Jupia Reservoir, Brazil
title_full_unstemmed Genetic diversity in Egeria densa and E. najas in Jupia Reservoir, Brazil
title_sort Genetic diversity in Egeria densa and E. najas in Jupia Reservoir, Brazil
author Mori, Edson Seizo [UNESP]
author_facet Mori, Edson Seizo [UNESP]
Martins, Dagoberto [UNESP]
Velini, Edivaldo Domingues [UNESP]
Marino, Celso L. [UNESP]
Gouvea, Cantidio F.
Leite, Suzi M. M. [UNESP]
Camacho, Edwin [UNESP]
Guries, Raymond P.
author_role author
author2 Martins, Dagoberto [UNESP]
Velini, Edivaldo Domingues [UNESP]
Marino, Celso L. [UNESP]
Gouvea, Cantidio 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)
Univ Wisconsin
dc.contributor.author.fl_str_mv Mori, Edson Seizo [UNESP]
Martins, Dagoberto [UNESP]
Velini, Edivaldo Domingues [UNESP]
Marino, Celso L. [UNESP]
Gouvea, Cantidio F.
Leite, Suzi M. M. [UNESP]
Camacho, Edwin [UNESP]
Guries, Raymond P.
dc.subject.por.fl_str_mv Egeria
dam
isoenzyme
genetic distance
RAPD
reservoir
topic Egeria
dam
isoenzyme
genetic distance
RAPD
reservoir
description E.S. Mori, D. Martins, E.D. Velini, C.L. Marino, C.F. Gouvea, S.M.M. Leite, E. Camacho Palomino, and R.P. Curies. 2012. Genetic diversity in Egeria densa and E. najas in Jupia Reservoir, Brazil. Cien. Inv. Agr. 39(2):321-330. The aquatic plant species Egeria densa (Planch.) Casp and E. najas Planchon occur naturally in the Parana 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 Jupia 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 Jupia and Tres Irmaos Lakes and their Parana 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 Tres Irmaos Lake appears to have increased some measures of genetic diversity in Egeria populations by facilitating outcrossing among previously semi-isolated genotypes. Increased migration of large numbers of seeds and vegetative branches of E. densa and E. najas into Jupia 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 2012-05-01
2014-05-20T13:50:20Z
2014-05-20T13:50:20Z
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
Ciência e Investigacion Agraria. Santiago: Pontificia Univ Catolica Chile, Fac Agronomia Ingenieria Forestal, v. 39, n. 2, p. 321-330, 2012.
0718-1620
http://hdl.handle.net/11449/17964
S0718-16202012000200008
WOS:000307986500008
S0718-16202012000200008-en.pdf
9855493448161702
0165348738208319
0000-0003-0431-5942
0000-0003-4524-954X
url http://dx.doi.org/10.4067/S0718-16202012000200008
http://hdl.handle.net/11449/17964
identifier_str_mv Ciência e Investigacion Agraria. Santiago: Pontificia Univ Catolica Chile, Fac Agronomia Ingenieria Forestal, v. 39, n. 2, p. 321-330, 2012.
0718-1620
S0718-16202012000200008
WOS:000307986500008
S0718-16202012000200008-en.pdf
9855493448161702
0165348738208319
0000-0003-0431-5942
0000-0003-4524-954X
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Ciência e Investigación Agraria
0.337
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dc.format.none.fl_str_mv 321-330
application/pdf
dc.publisher.none.fl_str_mv Pontificia Univ Catolica Chile, Fac Agronomia Ingenieria Forestal
publisher.none.fl_str_mv Pontificia Univ Catolica Chile, Fac Agronomia Ingenieria Forestal
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reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
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repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
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