Intra-specific variation in genome size in maize: Cytological and phenotypic correlates

Autores
Realini, Maria Florencia; Poggio, Lidia; Camara Hernandez, Julian Alberto; González, Graciela Esther
Año de publicación
2016
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Genome size variation accompanies the diversification and evolution of many plant species. Relationshipsbetween DNA amount and phenotypic and cytological characteristics form the basis of most hypotheses thatascribe a biological role to genome size. The goal of the present research was to investigate the intra-specific variationin the DNA content in maize populations from Northeastern Argentina and further explore the relationship betweengenome size and the phenotypic traits seed weight and length of the vegetative cycle. Moreover, cytological parameterssuch as the percentage of heterochromatin as well as the number, position and sequence composition ofknobs were analysed and their relationships with 2C DNA values were explored. The populations analysed presentedsignificant differences in 2C DNA amount, from 4.62 to 6.29 pg, representing 36.15 % of the inter-populational variation.Moreover, intra-populational genome size variation was found, varying from 1.08 to 1.63-fold. The variation inthe percentage of knob heterochromatin as well as in the number, chromosome position and sequence composition ofthe knobswas detected among and within the populations. Although a positive relationship between genome size andthe percentage of heterochromatin was observed, a significant correlation was not found. This confirms that othernon-coding repetitive DNA sequences are contributing to the genome size variation. A positive relationship betweenDNA amount and the seed weight has been reported in a large number of species, this relationship was not found inthe populations studied here. The length of the vegetative cycle showed a positive correlation with the percentage ofheterochromatin. This result allowed attributing an adaptive effect to heterochromatin since the length of this cyclewould be optimized via selection for an appropriate percentage of heterochromatin.
Fil: Realini, Maria Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina
Fil: Poggio, Lidia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina
Fil: Camara Hernandez, Julian Alberto. Universidad de Buenos Aires. Facultad de Agronomía; Argentina
Fil: González, Graciela Esther. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina
Materia
DAPI STAINING
DNA CONTENT VARIATION
FISH
GUARANI'S MAIZE LANDRACES
HETEROCHROMATIC KNOBS
KARYOTYPE PARAMETERS
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:11336/59806
Acceder
id CONICETDig_9ad35c3ef86c6cda126fd01b0db70dce
oai_identifier_str oai:ri.conicet.gov.ar:11336/59806
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Intra-specific variation in genome size in maize: Cytological and phenotypic correlatesRealini, Maria FlorenciaPoggio, LidiaCamara Hernandez, Julian AlbertoGonzález, Graciela EstherDAPI STAININGDNA CONTENT VARIATIONFISHGUARANI'S MAIZE LANDRACESHETEROCHROMATIC KNOBSKARYOTYPE PARAMETERShttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Genome size variation accompanies the diversification and evolution of many plant species. Relationshipsbetween DNA amount and phenotypic and cytological characteristics form the basis of most hypotheses thatascribe a biological role to genome size. The goal of the present research was to investigate the intra-specific variationin the DNA content in maize populations from Northeastern Argentina and further explore the relationship betweengenome size and the phenotypic traits seed weight and length of the vegetative cycle. Moreover, cytological parameterssuch as the percentage of heterochromatin as well as the number, position and sequence composition ofknobs were analysed and their relationships with 2C DNA values were explored. The populations analysed presentedsignificant differences in 2C DNA amount, from 4.62 to 6.29 pg, representing 36.15 % of the inter-populational variation.Moreover, intra-populational genome size variation was found, varying from 1.08 to 1.63-fold. The variation inthe percentage of knob heterochromatin as well as in the number, chromosome position and sequence composition ofthe knobswas detected among and within the populations. Although a positive relationship between genome size andthe percentage of heterochromatin was observed, a significant correlation was not found. This confirms that othernon-coding repetitive DNA sequences are contributing to the genome size variation. A positive relationship betweenDNA amount and the seed weight has been reported in a large number of species, this relationship was not found inthe populations studied here. The length of the vegetative cycle showed a positive correlation with the percentage ofheterochromatin. This result allowed attributing an adaptive effect to heterochromatin since the length of this cyclewould be optimized via selection for an appropriate percentage of heterochromatin.Fil: Realini, Maria Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; ArgentinaFil: Poggio, Lidia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; ArgentinaFil: Camara Hernandez, Julian Alberto. Universidad de Buenos Aires. Facultad de Agronomía; ArgentinaFil: González, Graciela Esther. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; ArgentinaOxford University Press2016-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/59806Realini, Maria Florencia; Poggio, Lidia; Camara Hernandez, Julian Alberto; González, Graciela Esther; Intra-specific variation in genome size in maize: Cytological and phenotypic correlates; Oxford University Press; AoB Plants; 8; 12-2016; 1-122041-2851CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1093/aobpla/plv138info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/aobpla/article/doi/10.1093/aobpla/plv138/2609491info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:50:19Zoai:ri.conicet.gov.ar:11336/59806instacron: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:34982025-09-29 09:50:19.798CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Intra-specific variation in genome size in maize: Cytological and phenotypic correlates
title Intra-specific variation in genome size in maize: Cytological and phenotypic correlates
spellingShingle Intra-specific variation in genome size in maize: Cytological and phenotypic correlates
Realini, Maria Florencia
DAPI STAINING
DNA CONTENT VARIATION
FISH
GUARANI'S MAIZE LANDRACES
HETEROCHROMATIC KNOBS
KARYOTYPE PARAMETERS
title_short Intra-specific variation in genome size in maize: Cytological and phenotypic correlates
title_full Intra-specific variation in genome size in maize: Cytological and phenotypic correlates
title_fullStr Intra-specific variation in genome size in maize: Cytological and phenotypic correlates
title_full_unstemmed Intra-specific variation in genome size in maize: Cytological and phenotypic correlates
title_sort Intra-specific variation in genome size in maize: Cytological and phenotypic correlates
dc.creator.none.fl_str_mv Realini, Maria Florencia
Poggio, Lidia
Camara Hernandez, Julian Alberto
González, Graciela Esther
author Realini, Maria Florencia
author_facet Realini, Maria Florencia
Poggio, Lidia
Camara Hernandez, Julian Alberto
González, Graciela Esther
author_role author
author2 Poggio, Lidia
Camara Hernandez, Julian Alberto
González, Graciela Esther
author2_role author
author
author
dc.subject.none.fl_str_mv DAPI STAINING
DNA CONTENT VARIATION
FISH
GUARANI'S MAIZE LANDRACES
HETEROCHROMATIC KNOBS
KARYOTYPE PARAMETERS
topic DAPI STAINING
DNA CONTENT VARIATION
FISH
GUARANI'S MAIZE LANDRACES
HETEROCHROMATIC KNOBS
KARYOTYPE PARAMETERS
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Genome size variation accompanies the diversification and evolution of many plant species. Relationshipsbetween DNA amount and phenotypic and cytological characteristics form the basis of most hypotheses thatascribe a biological role to genome size. The goal of the present research was to investigate the intra-specific variationin the DNA content in maize populations from Northeastern Argentina and further explore the relationship betweengenome size and the phenotypic traits seed weight and length of the vegetative cycle. Moreover, cytological parameterssuch as the percentage of heterochromatin as well as the number, position and sequence composition ofknobs were analysed and their relationships with 2C DNA values were explored. The populations analysed presentedsignificant differences in 2C DNA amount, from 4.62 to 6.29 pg, representing 36.15 % of the inter-populational variation.Moreover, intra-populational genome size variation was found, varying from 1.08 to 1.63-fold. The variation inthe percentage of knob heterochromatin as well as in the number, chromosome position and sequence composition ofthe knobswas detected among and within the populations. Although a positive relationship between genome size andthe percentage of heterochromatin was observed, a significant correlation was not found. This confirms that othernon-coding repetitive DNA sequences are contributing to the genome size variation. A positive relationship betweenDNA amount and the seed weight has been reported in a large number of species, this relationship was not found inthe populations studied here. The length of the vegetative cycle showed a positive correlation with the percentage ofheterochromatin. This result allowed attributing an adaptive effect to heterochromatin since the length of this cyclewould be optimized via selection for an appropriate percentage of heterochromatin.
Fil: Realini, Maria Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina
Fil: Poggio, Lidia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina
Fil: Camara Hernandez, Julian Alberto. Universidad de Buenos Aires. Facultad de Agronomía; Argentina
Fil: González, Graciela Esther. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina
description Genome size variation accompanies the diversification and evolution of many plant species. Relationshipsbetween DNA amount and phenotypic and cytological characteristics form the basis of most hypotheses thatascribe a biological role to genome size. The goal of the present research was to investigate the intra-specific variationin the DNA content in maize populations from Northeastern Argentina and further explore the relationship betweengenome size and the phenotypic traits seed weight and length of the vegetative cycle. Moreover, cytological parameterssuch as the percentage of heterochromatin as well as the number, position and sequence composition ofknobs were analysed and their relationships with 2C DNA values were explored. The populations analysed presentedsignificant differences in 2C DNA amount, from 4.62 to 6.29 pg, representing 36.15 % of the inter-populational variation.Moreover, intra-populational genome size variation was found, varying from 1.08 to 1.63-fold. The variation inthe percentage of knob heterochromatin as well as in the number, chromosome position and sequence composition ofthe knobswas detected among and within the populations. Although a positive relationship between genome size andthe percentage of heterochromatin was observed, a significant correlation was not found. This confirms that othernon-coding repetitive DNA sequences are contributing to the genome size variation. A positive relationship betweenDNA amount and the seed weight has been reported in a large number of species, this relationship was not found inthe populations studied here. The length of the vegetative cycle showed a positive correlation with the percentage ofheterochromatin. This result allowed attributing an adaptive effect to heterochromatin since the length of this cyclewould be optimized via selection for an appropriate percentage of heterochromatin.
publishDate 2016
dc.date.none.fl_str_mv 2016-12
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/11336/59806
Realini, Maria Florencia; Poggio, Lidia; Camara Hernandez, Julian Alberto; González, Graciela Esther; Intra-specific variation in genome size in maize: Cytological and phenotypic correlates; Oxford University Press; AoB Plants; 8; 12-2016; 1-12
2041-2851
CONICET Digital
CONICET
url http://hdl.handle.net/11336/59806
identifier_str_mv Realini, Maria Florencia; Poggio, Lidia; Camara Hernandez, Julian Alberto; González, Graciela Esther; Intra-specific variation in genome size in maize: Cytological and phenotypic correlates; Oxford University Press; AoB Plants; 8; 12-2016; 1-12
2041-2851
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1093/aobpla/plv138
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/aobpla/article/doi/10.1093/aobpla/plv138/2609491
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
dc.publisher.none.fl_str_mv Oxford University Press
publisher.none.fl_str_mv Oxford University Press
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 13.070432

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