Esterase polymorphism in remanant populations of Aspidosperma polyneuron Müll.Arg. (Apocynaceae)
Autor(a) principal: | |
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Data de Publicação: | 2004 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista Árvore (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-67622004000500001 |
Resumo: | The population genetic structure of the endangered tree species Aspidosperma polyneuron Mull.Arg. (Apocynaceae) was reported based on analysis of esterase polymorphism in two remanant populations. Allelic variation was detected at three isoesterase loci (Est-3, Est-9, and Est-10). The proportion of polymorphic loci for both populations was 30% and deviation from Hardy-Weinberg equilibrium was observed for the Est-3 locus observed in the northern population. Segregation distortion and the lower level of observed and expected heterozygosity in this population were attributed to founder genotype. The high genetic identity values for northern and northwestern populations are in accordance with the low levels of interpopulation genetic divergence demonstrated by the F(ST) (0.03) value. The F(IS) value (0.23) indicated moderate levels of inbreeding. A. polyneuron can be indicated as an example of endangered species suggesting high genetic variation in contrast to the low genetic variation reported for endangered species. The esterase isozymes may be a good genetic marker for studies of natural A. polyneuron populations. |
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Esterase polymorphism in remanant populations of Aspidosperma polyneuron Müll.Arg. (Apocynaceae)Apocynaceaegenetic diversityisoesterasesisozymesperoba-rosaThe population genetic structure of the endangered tree species Aspidosperma polyneuron Mull.Arg. (Apocynaceae) was reported based on analysis of esterase polymorphism in two remanant populations. Allelic variation was detected at three isoesterase loci (Est-3, Est-9, and Est-10). The proportion of polymorphic loci for both populations was 30% and deviation from Hardy-Weinberg equilibrium was observed for the Est-3 locus observed in the northern population. Segregation distortion and the lower level of observed and expected heterozygosity in this population were attributed to founder genotype. The high genetic identity values for northern and northwestern populations are in accordance with the low levels of interpopulation genetic divergence demonstrated by the F(ST) (0.03) value. The F(IS) value (0.23) indicated moderate levels of inbreeding. A. polyneuron can be indicated as an example of endangered species suggesting high genetic variation in contrast to the low genetic variation reported for endangered species. The esterase isozymes may be a good genetic marker for studies of natural A. polyneuron populations.Sociedade de Investigações Florestais2004-10-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-67622004000500001Revista Árvore v.28 n.5 2004reponame:Revista Árvore (Online)instname:Universidade Federal de Viçosa (UFV)instacron:SIF10.1590/S0100-67622004000500001info:eu-repo/semantics/openAccessCarvalho,Vanda Marilza deMachado,Maria de Fátima Pires da Silvaeng2005-04-04T00:00:00Zoai:scielo:S0100-67622004000500001Revistahttp://www.scielo.br/revistas/rarv/iaboutj.htmPUBhttps://old.scielo.br/oai/scielo-oai.php||r.arvore@ufv.br1806-90880100-6762opendoar:2005-04-04T00:00Revista Árvore (Online) - Universidade Federal de Viçosa (UFV)false |
dc.title.none.fl_str_mv |
Esterase polymorphism in remanant populations of Aspidosperma polyneuron Müll.Arg. (Apocynaceae) |
title |
Esterase polymorphism in remanant populations of Aspidosperma polyneuron Müll.Arg. (Apocynaceae) |
spellingShingle |
Esterase polymorphism in remanant populations of Aspidosperma polyneuron Müll.Arg. (Apocynaceae) Carvalho,Vanda Marilza de Apocynaceae genetic diversity isoesterases isozymes peroba-rosa |
title_short |
Esterase polymorphism in remanant populations of Aspidosperma polyneuron Müll.Arg. (Apocynaceae) |
title_full |
Esterase polymorphism in remanant populations of Aspidosperma polyneuron Müll.Arg. (Apocynaceae) |
title_fullStr |
Esterase polymorphism in remanant populations of Aspidosperma polyneuron Müll.Arg. (Apocynaceae) |
title_full_unstemmed |
Esterase polymorphism in remanant populations of Aspidosperma polyneuron Müll.Arg. (Apocynaceae) |
title_sort |
Esterase polymorphism in remanant populations of Aspidosperma polyneuron Müll.Arg. (Apocynaceae) |
author |
Carvalho,Vanda Marilza de |
author_facet |
Carvalho,Vanda Marilza de Machado,Maria de Fátima Pires da Silva |
author_role |
author |
author2 |
Machado,Maria de Fátima Pires da Silva |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Carvalho,Vanda Marilza de Machado,Maria de Fátima Pires da Silva |
dc.subject.por.fl_str_mv |
Apocynaceae genetic diversity isoesterases isozymes peroba-rosa |
topic |
Apocynaceae genetic diversity isoesterases isozymes peroba-rosa |
description |
The population genetic structure of the endangered tree species Aspidosperma polyneuron Mull.Arg. (Apocynaceae) was reported based on analysis of esterase polymorphism in two remanant populations. Allelic variation was detected at three isoesterase loci (Est-3, Est-9, and Est-10). The proportion of polymorphic loci for both populations was 30% and deviation from Hardy-Weinberg equilibrium was observed for the Est-3 locus observed in the northern population. Segregation distortion and the lower level of observed and expected heterozygosity in this population were attributed to founder genotype. The high genetic identity values for northern and northwestern populations are in accordance with the low levels of interpopulation genetic divergence demonstrated by the F(ST) (0.03) value. The F(IS) value (0.23) indicated moderate levels of inbreeding. A. polyneuron can be indicated as an example of endangered species suggesting high genetic variation in contrast to the low genetic variation reported for endangered species. The esterase isozymes may be a good genetic marker for studies of natural A. polyneuron populations. |
publishDate |
2004 |
dc.date.none.fl_str_mv |
2004-10-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-67622004000500001 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-67622004000500001 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0100-67622004000500001 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade de Investigações Florestais |
publisher.none.fl_str_mv |
Sociedade de Investigações Florestais |
dc.source.none.fl_str_mv |
Revista Árvore v.28 n.5 2004 reponame:Revista Árvore (Online) instname:Universidade Federal de Viçosa (UFV) instacron:SIF |
instname_str |
Universidade Federal de Viçosa (UFV) |
instacron_str |
SIF |
institution |
SIF |
reponame_str |
Revista Árvore (Online) |
collection |
Revista Árvore (Online) |
repository.name.fl_str_mv |
Revista Árvore (Online) - Universidade Federal de Viçosa (UFV) |
repository.mail.fl_str_mv |
||r.arvore@ufv.br |
_version_ |
1750317996048384000 |