Chromosome studies in <i>Hippeastrum</i> (Amaryllidaceae): variation in genome size
- Autores
- Poggio, Lidia; González, Graciela Esther; Naranjo, Carlos Alberto
- Año de publicación
- 2007
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- This paper presents the karyotype and DNA content of 12 diploid species of Hippeastrum from South America. The variation in genome size is compared with the karyotype and DNA content of Amaryllis belladonna from South Africa. The Hippeastrum species present a uniform and bimodal basic karyotype formula, but significant differences are found in the total chromosome volume (TCV) and nuclear DNA content. A positive correlation between the DNA content and TCV is also observed. The karyotype's constancy is a product of changes in DNA content occurring in the whole chromosome complement. The DNA addition to the long and short sets of chromosomes varies independently. In species with higher DNA contents, the short chromosomes add equal DNA amounts to both arms, maintaining their metacentric morphology, whereas the long chromosomes add DNA only to the short arm, increasing the chromosome symmetry. These data show that the evolutionary changes in DNA amount are proportional to chromosome length, maintaining the karyotypic uniformity. A. belladonna has a larger DNA content and possesses a karyotype different from that of Hippeastrum spp., supporting the distinction between the two genera and upholding the name Amaryllis for the South African entity against Hippeastrum for the South American genus.
Facultad de Ciencias Naturales y Museo
Facultad de Ciencias Agrarias y Forestales - Materia
-
Ciencias Naturales
Bimodal karyotype
Nuclear DNA content
Orthoselection - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/82960
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Chromosome studies in <i>Hippeastrum</i> (Amaryllidaceae): variation in genome sizePoggio, LidiaGonzález, Graciela EstherNaranjo, Carlos AlbertoCiencias NaturalesBimodal karyotypeNuclear DNA contentOrthoselectionThis paper presents the karyotype and DNA content of 12 diploid species of <i>Hippeastrum</i> from South America. The variation in genome size is compared with the karyotype and DNA content of <i>Amaryllis belladonna</i> from South Africa. The <i>Hippeastrum</i> species present a uniform and bimodal basic karyotype formula, but significant differences are found in the total chromosome volume (TCV) and nuclear DNA content. A positive correlation between the DNA content and TCV is also observed. The karyotype's constancy is a product of changes in DNA content occurring in the whole chromosome complement. The DNA addition to the long and short sets of chromosomes varies independently. In species with higher DNA contents, the short chromosomes add equal DNA amounts to both arms, maintaining their metacentric morphology, whereas the long chromosomes add DNA only to the short arm, increasing the chromosome symmetry. These data show that the evolutionary changes in DNA amount are proportional to chromosome length, maintaining the karyotypic uniformity. <i>A. belladonna</i> has a larger DNA content and possesses a karyotype different from that of <i>Hippeastrum</i> spp., supporting the distinction between the two genera and upholding the name <i>Amaryllis</i> for the South African entity against <i>Hippeastrum</i> for the South American genus.Facultad de Ciencias Naturales y MuseoFacultad de Ciencias Agrarias y Forestales2007info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf171-178http://sedici.unlp.edu.ar/handle/10915/82960enginfo:eu-repo/semantics/altIdentifier/issn/0024-4074info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1095-8339.2007.00645.xinfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:15:41Zoai:sedici.unlp.edu.ar:10915/82960Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:15:42.084SEDICI (UNLP) - Universidad Nacional de La Platafalse |
dc.title.none.fl_str_mv |
Chromosome studies in <i>Hippeastrum</i> (Amaryllidaceae): variation in genome size |
title |
Chromosome studies in <i>Hippeastrum</i> (Amaryllidaceae): variation in genome size |
spellingShingle |
Chromosome studies in <i>Hippeastrum</i> (Amaryllidaceae): variation in genome size Poggio, Lidia Ciencias Naturales Bimodal karyotype Nuclear DNA content Orthoselection |
title_short |
Chromosome studies in <i>Hippeastrum</i> (Amaryllidaceae): variation in genome size |
title_full |
Chromosome studies in <i>Hippeastrum</i> (Amaryllidaceae): variation in genome size |
title_fullStr |
Chromosome studies in <i>Hippeastrum</i> (Amaryllidaceae): variation in genome size |
title_full_unstemmed |
Chromosome studies in <i>Hippeastrum</i> (Amaryllidaceae): variation in genome size |
title_sort |
Chromosome studies in <i>Hippeastrum</i> (Amaryllidaceae): variation in genome size |
dc.creator.none.fl_str_mv |
Poggio, Lidia González, Graciela Esther Naranjo, Carlos Alberto |
author |
Poggio, Lidia |
author_facet |
Poggio, Lidia González, Graciela Esther Naranjo, Carlos Alberto |
author_role |
author |
author2 |
González, Graciela Esther Naranjo, Carlos Alberto |
author2_role |
author author |
dc.subject.none.fl_str_mv |
Ciencias Naturales Bimodal karyotype Nuclear DNA content Orthoselection |
topic |
Ciencias Naturales Bimodal karyotype Nuclear DNA content Orthoselection |
dc.description.none.fl_txt_mv |
This paper presents the karyotype and DNA content of 12 diploid species of <i>Hippeastrum</i> from South America. The variation in genome size is compared with the karyotype and DNA content of <i>Amaryllis belladonna</i> from South Africa. The <i>Hippeastrum</i> species present a uniform and bimodal basic karyotype formula, but significant differences are found in the total chromosome volume (TCV) and nuclear DNA content. A positive correlation between the DNA content and TCV is also observed. The karyotype's constancy is a product of changes in DNA content occurring in the whole chromosome complement. The DNA addition to the long and short sets of chromosomes varies independently. In species with higher DNA contents, the short chromosomes add equal DNA amounts to both arms, maintaining their metacentric morphology, whereas the long chromosomes add DNA only to the short arm, increasing the chromosome symmetry. These data show that the evolutionary changes in DNA amount are proportional to chromosome length, maintaining the karyotypic uniformity. <i>A. belladonna</i> has a larger DNA content and possesses a karyotype different from that of <i>Hippeastrum</i> spp., supporting the distinction between the two genera and upholding the name <i>Amaryllis</i> for the South African entity against <i>Hippeastrum</i> for the South American genus. Facultad de Ciencias Naturales y Museo Facultad de Ciencias Agrarias y Forestales |
description |
This paper presents the karyotype and DNA content of 12 diploid species of <i>Hippeastrum</i> from South America. The variation in genome size is compared with the karyotype and DNA content of <i>Amaryllis belladonna</i> from South Africa. The <i>Hippeastrum</i> species present a uniform and bimodal basic karyotype formula, but significant differences are found in the total chromosome volume (TCV) and nuclear DNA content. A positive correlation between the DNA content and TCV is also observed. The karyotype's constancy is a product of changes in DNA content occurring in the whole chromosome complement. The DNA addition to the long and short sets of chromosomes varies independently. In species with higher DNA contents, the short chromosomes add equal DNA amounts to both arms, maintaining their metacentric morphology, whereas the long chromosomes add DNA only to the short arm, increasing the chromosome symmetry. These data show that the evolutionary changes in DNA amount are proportional to chromosome length, maintaining the karyotypic uniformity. <i>A. belladonna</i> has a larger DNA content and possesses a karyotype different from that of <i>Hippeastrum</i> spp., supporting the distinction between the two genera and upholding the name <i>Amaryllis</i> for the South African entity against <i>Hippeastrum</i> for the South American genus. |
publishDate |
2007 |
dc.date.none.fl_str_mv |
2007 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo 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://sedici.unlp.edu.ar/handle/10915/82960 |
url |
http://sedici.unlp.edu.ar/handle/10915/82960 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/issn/0024-4074 info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1095-8339.2007.00645.x |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
eu_rights_str_mv |
openAccess |
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http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
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application/pdf 171-178 |
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