Meiotic effects of robertsonian translocations in tuco-tucos of the Ctenomys perrensi superspecies (Rodentia: Ctenomyidae)

Autores
Lanzone, Cecilia; Giménez, Mabel Dionisia; Santos, Juan L.; Bidau, Claudio Juan
Año de publicación
2007
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Meiotic behaviour was studied in males of the Ctenomys perrensi superspecies from Argentina that show variations in their chromosome number mostly due to Robertsonian translocations (Rb). A significant positive correlation between cell chiasma frequencies and total chromosome numbers was found. The reduction in chiasma frequency observed in individuals with Rb rearrangements occurred mainly at expenses of proximal and interstitial chiasmata, although significant differences between Rb trivalente and bivalents both in chiasma distribution and univalent frequency were also observed. Nevertheless, not all changes in chiasma distributions could be ascribed to Rb rearrangements. Chromosome synapsis was analysed in Rb hetero- and homozygotes. Trivalente showed a high frequency of synapsis at pericentromeric regions, suggesting no mechanical incompatibilities or delay in the synaptonemal complex formation in such regions. The relationship between chiasma distributions and synaptic patterns is discussed and a hypothesis about the possible role of telocentric or subtelocentric regions in these processes is proposed. It is also concluded that one or two Rb translocations in heterozygosis have weak direct effects on the fertility of the male carriers; therefore C. perrensi superspecies may be prone to maintain Rb chromosomal rearrangements.
Fil: Lanzone, Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Investigaciones de las Zonas Áridas. Provincia de Mendoza. Instituto Argentino de Investigaciones de las Zonas Áridas. Universidad Nacional de Cuyo. Instituto Argentino de Investigaciones de las Zonas Áridas; Argentina. Universidad Nacional de Misiones. Facultad de Humanidades y Ciencias Sociales. Departamento de Genética. Laboratorio de Genética Evolutiva y Molecular; Argentina
Fil: Giménez, Mabel Dionisia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. University of York; Reino Unido. Universidad Nacional de Misiones. Facultad de Humanidades y Ciencias Sociales. Departamento de Genética. Laboratorio de Genética Evolutiva y Molecular; Argentina
Fil: Santos, Juan L.. Universidad Complutense de Madrid; España
Fil: Bidau, Claudio Juan. Instituto Oswaldo Cruz; Brasil. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
CHIASMA FREQUENCY
CHIASMA LOCALISATION
CHROMOSOMAL REARRANGEMENTS
CTENOMYS
SYNAPTONEMAL COMPLEX
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/96168
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/96168
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Meiotic effects of robertsonian translocations in tuco-tucos of the Ctenomys perrensi superspecies (Rodentia: Ctenomyidae)Lanzone, CeciliaGiménez, Mabel DionisiaSantos, Juan L.Bidau, Claudio JuanCHIASMA FREQUENCYCHIASMA LOCALISATIONCHROMOSOMAL REARRANGEMENTSCTENOMYSSYNAPTONEMAL COMPLEXhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Meiotic behaviour was studied in males of the Ctenomys perrensi superspecies from Argentina that show variations in their chromosome number mostly due to Robertsonian translocations (Rb). A significant positive correlation between cell chiasma frequencies and total chromosome numbers was found. The reduction in chiasma frequency observed in individuals with Rb rearrangements occurred mainly at expenses of proximal and interstitial chiasmata, although significant differences between Rb trivalente and bivalents both in chiasma distribution and univalent frequency were also observed. Nevertheless, not all changes in chiasma distributions could be ascribed to Rb rearrangements. Chromosome synapsis was analysed in Rb hetero- and homozygotes. Trivalente showed a high frequency of synapsis at pericentromeric regions, suggesting no mechanical incompatibilities or delay in the synaptonemal complex formation in such regions. The relationship between chiasma distributions and synaptic patterns is discussed and a hypothesis about the possible role of telocentric or subtelocentric regions in these processes is proposed. It is also concluded that one or two Rb translocations in heterozygosis have weak direct effects on the fertility of the male carriers; therefore C. perrensi superspecies may be prone to maintain Rb chromosomal rearrangements.Fil: Lanzone, Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Investigaciones de las Zonas Áridas. Provincia de Mendoza. Instituto Argentino de Investigaciones de las Zonas Áridas. Universidad Nacional de Cuyo. Instituto Argentino de Investigaciones de las Zonas Áridas; Argentina. Universidad Nacional de Misiones. Facultad de Humanidades y Ciencias Sociales. Departamento de Genética. Laboratorio de Genética Evolutiva y Molecular; ArgentinaFil: Giménez, Mabel Dionisia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. University of York; Reino Unido. Universidad Nacional de Misiones. Facultad de Humanidades y Ciencias Sociales. Departamento de Genética. Laboratorio de Genética Evolutiva y Molecular; ArgentinaFil: Santos, Juan L.. Universidad Complutense de Madrid; EspañaFil: Bidau, Claudio Juan. Instituto Oswaldo Cruz; Brasil. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaUniversity Florence Botany Institute2007-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/96168Lanzone, Cecilia; Giménez, Mabel Dionisia; Santos, Juan L.; Bidau, Claudio Juan; Meiotic effects of robertsonian translocations in tuco-tucos of the Ctenomys perrensi superspecies (Rodentia: Ctenomyidae); University Florence Botany Institute; Caryologia; 60; 3; 1-2007; 233-2440008-7114CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.tandfonline.com/doi/abs/10.1080/00087114.2007.10797942info:eu-repo/semantics/altIdentifier/doi/10.1080/00087114.2007.10797942info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:46:22Zoai:ri.conicet.gov.ar:11336/96168instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 09:46:22.285CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Meiotic effects of robertsonian translocations in tuco-tucos of the Ctenomys perrensi superspecies (Rodentia: Ctenomyidae)
title Meiotic effects of robertsonian translocations in tuco-tucos of the Ctenomys perrensi superspecies (Rodentia: Ctenomyidae)
spellingShingle Meiotic effects of robertsonian translocations in tuco-tucos of the Ctenomys perrensi superspecies (Rodentia: Ctenomyidae)
Lanzone, Cecilia
CHIASMA FREQUENCY
CHIASMA LOCALISATION
CHROMOSOMAL REARRANGEMENTS
CTENOMYS
SYNAPTONEMAL COMPLEX
title_short Meiotic effects of robertsonian translocations in tuco-tucos of the Ctenomys perrensi superspecies (Rodentia: Ctenomyidae)
title_full Meiotic effects of robertsonian translocations in tuco-tucos of the Ctenomys perrensi superspecies (Rodentia: Ctenomyidae)
title_fullStr Meiotic effects of robertsonian translocations in tuco-tucos of the Ctenomys perrensi superspecies (Rodentia: Ctenomyidae)
title_full_unstemmed Meiotic effects of robertsonian translocations in tuco-tucos of the Ctenomys perrensi superspecies (Rodentia: Ctenomyidae)
title_sort Meiotic effects of robertsonian translocations in tuco-tucos of the Ctenomys perrensi superspecies (Rodentia: Ctenomyidae)
dc.creator.none.fl_str_mv Lanzone, Cecilia
Giménez, Mabel Dionisia
Santos, Juan L.
Bidau, Claudio Juan
author Lanzone, Cecilia
author_facet Lanzone, Cecilia
Giménez, Mabel Dionisia
Santos, Juan L.
Bidau, Claudio Juan
author_role author
author2 Giménez, Mabel Dionisia
Santos, Juan L.
Bidau, Claudio Juan
author2_role author
author
author
dc.subject.none.fl_str_mv CHIASMA FREQUENCY
CHIASMA LOCALISATION
CHROMOSOMAL REARRANGEMENTS
CTENOMYS
SYNAPTONEMAL COMPLEX
topic CHIASMA FREQUENCY
CHIASMA LOCALISATION
CHROMOSOMAL REARRANGEMENTS
CTENOMYS
SYNAPTONEMAL COMPLEX
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Meiotic behaviour was studied in males of the Ctenomys perrensi superspecies from Argentina that show variations in their chromosome number mostly due to Robertsonian translocations (Rb). A significant positive correlation between cell chiasma frequencies and total chromosome numbers was found. The reduction in chiasma frequency observed in individuals with Rb rearrangements occurred mainly at expenses of proximal and interstitial chiasmata, although significant differences between Rb trivalente and bivalents both in chiasma distribution and univalent frequency were also observed. Nevertheless, not all changes in chiasma distributions could be ascribed to Rb rearrangements. Chromosome synapsis was analysed in Rb hetero- and homozygotes. Trivalente showed a high frequency of synapsis at pericentromeric regions, suggesting no mechanical incompatibilities or delay in the synaptonemal complex formation in such regions. The relationship between chiasma distributions and synaptic patterns is discussed and a hypothesis about the possible role of telocentric or subtelocentric regions in these processes is proposed. It is also concluded that one or two Rb translocations in heterozygosis have weak direct effects on the fertility of the male carriers; therefore C. perrensi superspecies may be prone to maintain Rb chromosomal rearrangements.
Fil: Lanzone, Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Investigaciones de las Zonas Áridas. Provincia de Mendoza. Instituto Argentino de Investigaciones de las Zonas Áridas. Universidad Nacional de Cuyo. Instituto Argentino de Investigaciones de las Zonas Áridas; Argentina. Universidad Nacional de Misiones. Facultad de Humanidades y Ciencias Sociales. Departamento de Genética. Laboratorio de Genética Evolutiva y Molecular; Argentina
Fil: Giménez, Mabel Dionisia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. University of York; Reino Unido. Universidad Nacional de Misiones. Facultad de Humanidades y Ciencias Sociales. Departamento de Genética. Laboratorio de Genética Evolutiva y Molecular; Argentina
Fil: Santos, Juan L.. Universidad Complutense de Madrid; España
Fil: Bidau, Claudio Juan. Instituto Oswaldo Cruz; Brasil. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description Meiotic behaviour was studied in males of the Ctenomys perrensi superspecies from Argentina that show variations in their chromosome number mostly due to Robertsonian translocations (Rb). A significant positive correlation between cell chiasma frequencies and total chromosome numbers was found. The reduction in chiasma frequency observed in individuals with Rb rearrangements occurred mainly at expenses of proximal and interstitial chiasmata, although significant differences between Rb trivalente and bivalents both in chiasma distribution and univalent frequency were also observed. Nevertheless, not all changes in chiasma distributions could be ascribed to Rb rearrangements. Chromosome synapsis was analysed in Rb hetero- and homozygotes. Trivalente showed a high frequency of synapsis at pericentromeric regions, suggesting no mechanical incompatibilities or delay in the synaptonemal complex formation in such regions. The relationship between chiasma distributions and synaptic patterns is discussed and a hypothesis about the possible role of telocentric or subtelocentric regions in these processes is proposed. It is also concluded that one or two Rb translocations in heterozygosis have weak direct effects on the fertility of the male carriers; therefore C. perrensi superspecies may be prone to maintain Rb chromosomal rearrangements.
publishDate 2007
dc.date.none.fl_str_mv 2007-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/96168
Lanzone, Cecilia; Giménez, Mabel Dionisia; Santos, Juan L.; Bidau, Claudio Juan; Meiotic effects of robertsonian translocations in tuco-tucos of the Ctenomys perrensi superspecies (Rodentia: Ctenomyidae); University Florence Botany Institute; Caryologia; 60; 3; 1-2007; 233-244
0008-7114
CONICET Digital
CONICET
url http://hdl.handle.net/11336/96168
identifier_str_mv Lanzone, Cecilia; Giménez, Mabel Dionisia; Santos, Juan L.; Bidau, Claudio Juan; Meiotic effects of robertsonian translocations in tuco-tucos of the Ctenomys perrensi superspecies (Rodentia: Ctenomyidae); University Florence Botany Institute; Caryologia; 60; 3; 1-2007; 233-244
0008-7114
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.tandfonline.com/doi/abs/10.1080/00087114.2007.10797942
info:eu-repo/semantics/altIdentifier/doi/10.1080/00087114.2007.10797942
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv University Florence Botany Institute
publisher.none.fl_str_mv University Florence Botany Institute
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.13397

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