Complex rearrangements are involved in Cephalanthera (Orchidaceae) chromosome evolution

Autores
Moscone, Eduardo Alberto; Samuel, Rosabelle; Schwarzacher, Trude; Schweizer, Dieter; Pedrosa-Harand, Andrea
Año de publicación
2007
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The genus Cephalanthera is an excellent plant group for karyotype evolution studies because it exhibits a dysploid series and bimodal karyotypes. With the aim of understanding their chromosomal and phylogenetic relationships, rRNA genes and the Arabidopsis-type telomeric sequence were mapped by fluorescence in-situ hybridization (FISH), and the rDNA intergenic spacer (ITS) was sequenced for the first time in three European species: C. longifolia (2n = 4x = 32), C. damasonium (2n = 4x = 36) and C. rubra (2n = 4x = 44). One 45S and three 5S rDNA sites are observed in C. longifolia, one 45S and two 5S sites in C. damasonium, and two 45S and one 5S site in C. rubra. Telomeric signals were observed at every chromosome end in all three species and C. damasonium also displays interstitial signals on three chromosome pairs. In agreement with chromosome data, molecular analyses support C. longifolia and C. damasonium as closely related taxa, while C. rubra stands apart. Possible pathways of karyotype evolution are discussed in reference to a previous hypothesis. The results indicate that complex chromosomal rearrangements, possibly involving Robertsonian fusions and fissions, loss of telomeric repeats, gain or loss of rDNA sites and other heterochromatic sequences and inversions, may have contributed to generating the present-day karyotypes.
Fil: Moscone, Eduardo Alberto. Universidad de Viena; Austria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina
Fil: Samuel, Rosabelle. Universidad de Viena; Austria
Fil: Schwarzacher, Trude. University of Leicester; Reino Unido
Fil: Schweizer, Dieter. Universidad de Viena; Austria
Fil: Pedrosa-Harand, Andrea. Universidad de Viena; Austria
Materia
Cephalantera
Orchidaceae
Fluorescence in Situ Hybridization
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:11336/30597
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/30597
network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling Complex rearrangements are involved in Cephalanthera (Orchidaceae) chromosome evolutionMoscone, Eduardo AlbertoSamuel, RosabelleSchwarzacher, TrudeSchweizer, DieterPedrosa-Harand, AndreaCephalanteraOrchidaceaeFluorescence in Situ Hybridizationhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1The genus Cephalanthera is an excellent plant group for karyotype evolution studies because it exhibits a dysploid series and bimodal karyotypes. With the aim of understanding their chromosomal and phylogenetic relationships, rRNA genes and the Arabidopsis-type telomeric sequence were mapped by fluorescence in-situ hybridization (FISH), and the rDNA intergenic spacer (ITS) was sequenced for the first time in three European species: C. longifolia (2n = 4x = 32), C. damasonium (2n = 4x = 36) and C. rubra (2n = 4x = 44). One 45S and three 5S rDNA sites are observed in C. longifolia, one 45S and two 5S sites in C. damasonium, and two 45S and one 5S site in C. rubra. Telomeric signals were observed at every chromosome end in all three species and C. damasonium also displays interstitial signals on three chromosome pairs. In agreement with chromosome data, molecular analyses support C. longifolia and C. damasonium as closely related taxa, while C. rubra stands apart. Possible pathways of karyotype evolution are discussed in reference to a previous hypothesis. The results indicate that complex chromosomal rearrangements, possibly involving Robertsonian fusions and fissions, loss of telomeric repeats, gain or loss of rDNA sites and other heterochromatic sequences and inversions, may have contributed to generating the present-day karyotypes.Fil: Moscone, Eduardo Alberto. Universidad de Viena; Austria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; ArgentinaFil: Samuel, Rosabelle. Universidad de Viena; AustriaFil: Schwarzacher, Trude. University of Leicester; Reino UnidoFil: Schweizer, Dieter. Universidad de Viena; AustriaFil: Pedrosa-Harand, Andrea. Universidad de Viena; AustriaSpringer Netherlands2007-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/30597Moscone, Eduardo Alberto; Samuel, Rosabelle; Schwarzacher, Trude; Schweizer, Dieter; Pedrosa-Harand, Andrea; Complex rearrangements are involved in Cephalanthera (Orchidaceae) chromosome evolution; Springer Netherlands; Chromosome Research; 15; 7; 12-2007; 931-9430967-38491573-6849CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007/s10577-007-1174-6#citeasinfo:eu-repo/semantics/altIdentifier/doi/10.1007/s10577-007-1174-6info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:17:13Zoai:ri.conicet.gov.ar:11336/30597instacron: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:34982025-10-22 11:17:13.356CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Complex rearrangements are involved in Cephalanthera (Orchidaceae) chromosome evolution
title Complex rearrangements are involved in Cephalanthera (Orchidaceae) chromosome evolution
spellingShingle Complex rearrangements are involved in Cephalanthera (Orchidaceae) chromosome evolution
Moscone, Eduardo Alberto
Cephalantera
Orchidaceae
Fluorescence in Situ Hybridization
title_short Complex rearrangements are involved in Cephalanthera (Orchidaceae) chromosome evolution
title_full Complex rearrangements are involved in Cephalanthera (Orchidaceae) chromosome evolution
title_fullStr Complex rearrangements are involved in Cephalanthera (Orchidaceae) chromosome evolution
title_full_unstemmed Complex rearrangements are involved in Cephalanthera (Orchidaceae) chromosome evolution
title_sort Complex rearrangements are involved in Cephalanthera (Orchidaceae) chromosome evolution
dc.creator.none.fl_str_mv Moscone, Eduardo Alberto
Samuel, Rosabelle
Schwarzacher, Trude
Schweizer, Dieter
Pedrosa-Harand, Andrea
author Moscone, Eduardo Alberto
author_facet Moscone, Eduardo Alberto
Samuel, Rosabelle
Schwarzacher, Trude
Schweizer, Dieter
Pedrosa-Harand, Andrea
author_role author
author2 Samuel, Rosabelle
Schwarzacher, Trude
Schweizer, Dieter
Pedrosa-Harand, Andrea
author2_role author
author
author
author
dc.subject.none.fl_str_mv Cephalantera
Orchidaceae
Fluorescence in Situ Hybridization
topic Cephalantera
Orchidaceae
Fluorescence in Situ Hybridization
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The genus Cephalanthera is an excellent plant group for karyotype evolution studies because it exhibits a dysploid series and bimodal karyotypes. With the aim of understanding their chromosomal and phylogenetic relationships, rRNA genes and the Arabidopsis-type telomeric sequence were mapped by fluorescence in-situ hybridization (FISH), and the rDNA intergenic spacer (ITS) was sequenced for the first time in three European species: C. longifolia (2n = 4x = 32), C. damasonium (2n = 4x = 36) and C. rubra (2n = 4x = 44). One 45S and three 5S rDNA sites are observed in C. longifolia, one 45S and two 5S sites in C. damasonium, and two 45S and one 5S site in C. rubra. Telomeric signals were observed at every chromosome end in all three species and C. damasonium also displays interstitial signals on three chromosome pairs. In agreement with chromosome data, molecular analyses support C. longifolia and C. damasonium as closely related taxa, while C. rubra stands apart. Possible pathways of karyotype evolution are discussed in reference to a previous hypothesis. The results indicate that complex chromosomal rearrangements, possibly involving Robertsonian fusions and fissions, loss of telomeric repeats, gain or loss of rDNA sites and other heterochromatic sequences and inversions, may have contributed to generating the present-day karyotypes.
Fil: Moscone, Eduardo Alberto. Universidad de Viena; Austria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina
Fil: Samuel, Rosabelle. Universidad de Viena; Austria
Fil: Schwarzacher, Trude. University of Leicester; Reino Unido
Fil: Schweizer, Dieter. Universidad de Viena; Austria
Fil: Pedrosa-Harand, Andrea. Universidad de Viena; Austria
description The genus Cephalanthera is an excellent plant group for karyotype evolution studies because it exhibits a dysploid series and bimodal karyotypes. With the aim of understanding their chromosomal and phylogenetic relationships, rRNA genes and the Arabidopsis-type telomeric sequence were mapped by fluorescence in-situ hybridization (FISH), and the rDNA intergenic spacer (ITS) was sequenced for the first time in three European species: C. longifolia (2n = 4x = 32), C. damasonium (2n = 4x = 36) and C. rubra (2n = 4x = 44). One 45S and three 5S rDNA sites are observed in C. longifolia, one 45S and two 5S sites in C. damasonium, and two 45S and one 5S site in C. rubra. Telomeric signals were observed at every chromosome end in all three species and C. damasonium also displays interstitial signals on three chromosome pairs. In agreement with chromosome data, molecular analyses support C. longifolia and C. damasonium as closely related taxa, while C. rubra stands apart. Possible pathways of karyotype evolution are discussed in reference to a previous hypothesis. The results indicate that complex chromosomal rearrangements, possibly involving Robertsonian fusions and fissions, loss of telomeric repeats, gain or loss of rDNA sites and other heterochromatic sequences and inversions, may have contributed to generating the present-day karyotypes.
publishDate 2007
dc.date.none.fl_str_mv 2007-12
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/11336/30597
Moscone, Eduardo Alberto; Samuel, Rosabelle; Schwarzacher, Trude; Schweizer, Dieter; Pedrosa-Harand, Andrea; Complex rearrangements are involved in Cephalanthera (Orchidaceae) chromosome evolution; Springer Netherlands; Chromosome Research; 15; 7; 12-2007; 931-943
0967-3849
1573-6849
CONICET Digital
CONICET
url http://hdl.handle.net/11336/30597
identifier_str_mv Moscone, Eduardo Alberto; Samuel, Rosabelle; Schwarzacher, Trude; Schweizer, Dieter; Pedrosa-Harand, Andrea; Complex rearrangements are involved in Cephalanthera (Orchidaceae) chromosome evolution; Springer Netherlands; Chromosome Research; 15; 7; 12-2007; 931-943
0967-3849
1573-6849
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://link.springer.com/article/10.1007/s10577-007-1174-6#citeas
info:eu-repo/semantics/altIdentifier/doi/10.1007/s10577-007-1174-6
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
dc.publisher.none.fl_str_mv Springer Netherlands
publisher.none.fl_str_mv Springer Netherlands
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 12.982451

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