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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/2170
Ver los metadatos del registro completo
id |
CONICETDig_0d096dfb92ab242a81f7c2b51ccef58f |
---|---|
oai_identifier_str |
oai:ri.conicet.gov.ar:11336/2170 |
network_acronym_str |
CONICETDig |
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 |
_version_ |
1844613523966001152 |
score |
13.070432 |