Competition between meiotic and apomictic pathways during ovule and seed development results in clonality

Autores
Hojsgaard, Diego Hernan; Martínez, Eric Javier; Quarin, Camilo Luis
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Meiotic and apomictic reproductive pathways develop simultaneously in facultative aposporous apomictic species, and compete to form a seed as final goal. This developmental competition was evaluated in tetraploid genotypes of Paspalum malacophyllum in order to understand the scanty rate of sexuality in facultative apomictic populations. Cyto-embryology on ovules, flow cytometry on seeds and progeny tests by DNA fingerprinting were used to measure the relative incidence of each meiotic or apomictic pathway along four different stages of the plant's life cycle, namely the beginning and end of gametogenesis, seed formation, and adult offspring. A high variation in the frequencies of sexual and apomictic pathways occurred at the first two stages. A trend of radical decline in realised sexuality was then observed. Sexual and apomictic seeds were produced, but the efficiency of the sexual pathway drastically dropped, and exclusively clonal offspring remained. Both reproductive pathways are unstable at the beginning of development, and only the apomictic one remains functional. Key factors reducing sexuality are the faster growth and parthenogenetic development of the aposporous pathway, and an (epi)genetically negative background related to the extensive gene de-regulation pattern responsible for apomixis. The effects of inbreeding depression during post-fertilisation development may further decrease frequencies of effective sexuality.
Fil: Hojsgaard, Diego Hernan. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Nordeste. Instituto de Botánica del Nordeste (i); Argentina; University of Goettingen. Department of Systematic Botany. Albrecht-von-Haller Institute of Plant Sciences; Alemania;
Fil: Martínez, Eric Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Nordeste. Instituto de Botánica del Nordeste (i); Argentina; Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias; Argentina;
Fil: Quarin, Camilo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Nordeste. Instituto de Botánica del Nordeste (i); Argentina; Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias; Argentina;
Materia
Apomixis
Flow Cytometry
Embryology
Plant Reproduction
Cytoembryology
Meiosis
Progeny Test
Aflp
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/2170

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oai_identifier_str oai:ri.conicet.gov.ar:11336/2170
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Competition between meiotic and apomictic pathways during ovule and seed development results in clonalityHojsgaard, Diego HernanMartínez, Eric JavierQuarin, Camilo LuisApomixisFlow CytometryEmbryologyPlant ReproductionCytoembryologyMeiosisProgeny TestAflphttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Meiotic and apomictic reproductive pathways develop simultaneously in facultative aposporous apomictic species, and compete to form a seed as final goal. This developmental competition was evaluated in tetraploid genotypes of Paspalum malacophyllum in order to understand the scanty rate of sexuality in facultative apomictic populations. Cyto-embryology on ovules, flow cytometry on seeds and progeny tests by DNA fingerprinting were used to measure the relative incidence of each meiotic or apomictic pathway along four different stages of the plant's life cycle, namely the beginning and end of gametogenesis, seed formation, and adult offspring. A high variation in the frequencies of sexual and apomictic pathways occurred at the first two stages. A trend of radical decline in realised sexuality was then observed. Sexual and apomictic seeds were produced, but the efficiency of the sexual pathway drastically dropped, and exclusively clonal offspring remained. Both reproductive pathways are unstable at the beginning of development, and only the apomictic one remains functional. Key factors reducing sexuality are the faster growth and parthenogenetic development of the aposporous pathway, and an (epi)genetically negative background related to the extensive gene de-regulation pattern responsible for apomixis. The effects of inbreeding depression during post-fertilisation development may further decrease frequencies of effective sexuality.Fil: Hojsgaard, Diego Hernan. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Nordeste. Instituto de Botánica del Nordeste (i); Argentina; University of Goettingen. Department of Systematic Botany. Albrecht-von-Haller Institute of Plant Sciences; Alemania;Fil: Martínez, Eric Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Nordeste. Instituto de Botánica del Nordeste (i); Argentina; Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias; Argentina;Fil: Quarin, Camilo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Nordeste. Instituto de Botánica del Nordeste (i); Argentina; Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias; Argentina;Wiley Blackwell Publishing, Inc2013-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/2170Hojsgaard, Diego Hernan; Martínez, Eric Javier; Quarin, Camilo Luis; Competition between meiotic and apomictic pathways during ovule and seed development results in clonality; Wiley Blackwell Publishing, Inc; New Phytologist; 197; 1-2013; 336-3470028-646Xenginfo:eu-repo/semantics/altIdentifier/doi/10.1111/j.1469-8137.2012.04381.xinfo:eu-repo/semantics/altIdentifier/url/http://www.ncbi.nlm.nih.gov/pubmed/23127139info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1111/j.1469-8137.2012.04381.x/epdfinfo:eu-repo/semantics/altIdentifier/url/http://authorservices.wiley.com/bauthor/onlineLibraryTPS.asp?DOI=10.1111/j.1469-8137.2012.04381.x&ArticleID=1062082info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:49:10Zoai:ri.conicet.gov.ar:11336/2170instacron: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 09:49:10.322CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Competition between meiotic and apomictic pathways during ovule and seed development results in clonality
title Competition between meiotic and apomictic pathways during ovule and seed development results in clonality
spellingShingle Competition between meiotic and apomictic pathways during ovule and seed development results in clonality
Hojsgaard, Diego Hernan
Apomixis
Flow Cytometry
Embryology
Plant Reproduction
Cytoembryology
Meiosis
Progeny Test
Aflp
title_short Competition between meiotic and apomictic pathways during ovule and seed development results in clonality
title_full Competition between meiotic and apomictic pathways during ovule and seed development results in clonality
title_fullStr Competition between meiotic and apomictic pathways during ovule and seed development results in clonality
title_full_unstemmed Competition between meiotic and apomictic pathways during ovule and seed development results in clonality
title_sort Competition between meiotic and apomictic pathways during ovule and seed development results in clonality
dc.creator.none.fl_str_mv Hojsgaard, Diego Hernan
Martínez, Eric Javier
Quarin, Camilo Luis
author Hojsgaard, Diego Hernan
author_facet Hojsgaard, Diego Hernan
Martínez, Eric Javier
Quarin, Camilo Luis
author_role author
author2 Martínez, Eric Javier
Quarin, Camilo Luis
author2_role author
author
dc.subject.none.fl_str_mv Apomixis
Flow Cytometry
Embryology
Plant Reproduction
Cytoembryology
Meiosis
Progeny Test
Aflp
topic Apomixis
Flow Cytometry
Embryology
Plant Reproduction
Cytoembryology
Meiosis
Progeny Test
Aflp
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 and apomictic reproductive pathways develop simultaneously in facultative aposporous apomictic species, and compete to form a seed as final goal. This developmental competition was evaluated in tetraploid genotypes of Paspalum malacophyllum in order to understand the scanty rate of sexuality in facultative apomictic populations. Cyto-embryology on ovules, flow cytometry on seeds and progeny tests by DNA fingerprinting were used to measure the relative incidence of each meiotic or apomictic pathway along four different stages of the plant's life cycle, namely the beginning and end of gametogenesis, seed formation, and adult offspring. A high variation in the frequencies of sexual and apomictic pathways occurred at the first two stages. A trend of radical decline in realised sexuality was then observed. Sexual and apomictic seeds were produced, but the efficiency of the sexual pathway drastically dropped, and exclusively clonal offspring remained. Both reproductive pathways are unstable at the beginning of development, and only the apomictic one remains functional. Key factors reducing sexuality are the faster growth and parthenogenetic development of the aposporous pathway, and an (epi)genetically negative background related to the extensive gene de-regulation pattern responsible for apomixis. The effects of inbreeding depression during post-fertilisation development may further decrease frequencies of effective sexuality.
Fil: Hojsgaard, Diego Hernan. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Nordeste. Instituto de Botánica del Nordeste (i); Argentina; University of Goettingen. Department of Systematic Botany. Albrecht-von-Haller Institute of Plant Sciences; Alemania;
Fil: Martínez, Eric Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Nordeste. Instituto de Botánica del Nordeste (i); Argentina; Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias; Argentina;
Fil: Quarin, Camilo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Nordeste. Instituto de Botánica del Nordeste (i); Argentina; Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias; Argentina;
description Meiotic and apomictic reproductive pathways develop simultaneously in facultative aposporous apomictic species, and compete to form a seed as final goal. This developmental competition was evaluated in tetraploid genotypes of Paspalum malacophyllum in order to understand the scanty rate of sexuality in facultative apomictic populations. Cyto-embryology on ovules, flow cytometry on seeds and progeny tests by DNA fingerprinting were used to measure the relative incidence of each meiotic or apomictic pathway along four different stages of the plant's life cycle, namely the beginning and end of gametogenesis, seed formation, and adult offspring. A high variation in the frequencies of sexual and apomictic pathways occurred at the first two stages. A trend of radical decline in realised sexuality was then observed. Sexual and apomictic seeds were produced, but the efficiency of the sexual pathway drastically dropped, and exclusively clonal offspring remained. Both reproductive pathways are unstable at the beginning of development, and only the apomictic one remains functional. Key factors reducing sexuality are the faster growth and parthenogenetic development of the aposporous pathway, and an (epi)genetically negative background related to the extensive gene de-regulation pattern responsible for apomixis. The effects of inbreeding depression during post-fertilisation development may further decrease frequencies of effective sexuality.
publishDate 2013
dc.date.none.fl_str_mv 2013-01
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/11336/2170
Hojsgaard, Diego Hernan; Martínez, Eric Javier; Quarin, Camilo Luis; Competition between meiotic and apomictic pathways during ovule and seed development results in clonality; Wiley Blackwell Publishing, Inc; New Phytologist; 197; 1-2013; 336-347
0028-646X
url http://hdl.handle.net/11336/2170
identifier_str_mv Hojsgaard, Diego Hernan; Martínez, Eric Javier; Quarin, Camilo Luis; Competition between meiotic and apomictic pathways during ovule and seed development results in clonality; Wiley Blackwell Publishing, Inc; New Phytologist; 197; 1-2013; 336-347
0028-646X
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1469-8137.2012.04381.x
info:eu-repo/semantics/altIdentifier/url/http://www.ncbi.nlm.nih.gov/pubmed/23127139
info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1111/j.1469-8137.2012.04381.x/epdf
info:eu-repo/semantics/altIdentifier/url/http://authorservices.wiley.com/bauthor/onlineLibraryTPS.asp?DOI=10.1111/j.1469-8137.2012.04381.x&ArticleID=1062082
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
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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