Meiotic abnormalities underlying pollen sterility in wild potato hybrids and spontaneous populations

Autores
Larrosa, Federico Héctor; Maune, Juan Federico; Erazzú, L. E.; Camadro, Elsa Lucila
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Wild potato species are widely distributed in the Americas, where they spontaneously grow in very diverse habitats. These species ? with low chromosome differentiation ? form polyploid series with 2n = 2x, 3x, 4x and 6x (x = 12). They are isolated in nature by external and internal hybridisation barriers that can be incomplete, allowing hybridisation in areas of sympatry. Nevertheless, most accessions in germplasm banks, regardless of genetic background of the sampled spontaneous populations, have been assigned specific categories based on morphological characters. To further investigate the extent of hybridisation in the group and for comparative purposes, pollen viability was estimated in (i) artificial hybrids between a commercial cultivar (Cale´n INTA) of the common potato (tetraploid Solanum tuberosum ssp. tuberosum) and the tetraploid cytotype of the related wild species S. gourlayi, and (ii) samples of plants (accessions) and inflorescences of naturalpopulations from Argentina, tentatively classified as ?presumed hybrids? (S. infundibuliforme?S. gourlayi) and ?species? (S. infundibuliforme, S. gourlayi and S. chacoense). Regardless of origin, 98 out of 103 plants analysed had zero to 70% pollen viability (zero to 40% in eight of them). Pollen grains were of variable size and morphology and, in mostly male sterile plants, the only viable pollen grains were 2n and ⁄ or 4n. Furthermore, male sterile plants shared various abnormalities in meiosis I and II (unpaired chromosomes, unequal chromosome distribution,precocious ⁄ lagging chromosomes, parallel, tripolar, fused and multiple spindles, unequal size nuclei, dyads, triads and pentads in addition to normal tetrads, among others). These results provide novel evidence to support field observations of early potato botanists on the extent of spontaneous hybridisation in wild Argentinian potato populations, which is not reflected in the current taxonomy and has significant consequences for germplasm conservation and breeding.
Fil: Larrosa, Federico Héctor. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina
Fil: Maune, Juan Federico. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata; Argentina
Fil: Erazzú, L. E.. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Tucuman-Santiago del Estero. Estación Experimental Agropecuaria Famaillá; Argentina
Fil: Camadro, Elsa Lucila. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Buenos Aires Sur. Estación Experimental Agropecuaria Balcarce; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina
Materia
Male sterility
Solanum spp.
pollen morphology
spontaneous hybrids
wild potato species
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:11336/245851
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/245851
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Meiotic abnormalities underlying pollen sterility in wild potato hybrids and spontaneous populationsLarrosa, Federico HéctorMaune, Juan FedericoErazzú, L. E.Camadro, Elsa LucilaMale sterilitySolanum spp.pollen morphologyspontaneous hybridswild potato specieshttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1https://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Wild potato species are widely distributed in the Americas, where they spontaneously grow in very diverse habitats. These species ? with low chromosome differentiation ? form polyploid series with 2n = 2x, 3x, 4x and 6x (x = 12). They are isolated in nature by external and internal hybridisation barriers that can be incomplete, allowing hybridisation in areas of sympatry. Nevertheless, most accessions in germplasm banks, regardless of genetic background of the sampled spontaneous populations, have been assigned specific categories based on morphological characters. To further investigate the extent of hybridisation in the group and for comparative purposes, pollen viability was estimated in (i) artificial hybrids between a commercial cultivar (Cale´n INTA) of the common potato (tetraploid Solanum tuberosum ssp. tuberosum) and the tetraploid cytotype of the related wild species S. gourlayi, and (ii) samples of plants (accessions) and inflorescences of naturalpopulations from Argentina, tentatively classified as ?presumed hybrids? (S. infundibuliforme?S. gourlayi) and ?species? (S. infundibuliforme, S. gourlayi and S. chacoense). Regardless of origin, 98 out of 103 plants analysed had zero to 70% pollen viability (zero to 40% in eight of them). Pollen grains were of variable size and morphology and, in mostly male sterile plants, the only viable pollen grains were 2n and ⁄ or 4n. Furthermore, male sterile plants shared various abnormalities in meiosis I and II (unpaired chromosomes, unequal chromosome distribution,precocious ⁄ lagging chromosomes, parallel, tripolar, fused and multiple spindles, unequal size nuclei, dyads, triads and pentads in addition to normal tetrads, among others). These results provide novel evidence to support field observations of early potato botanists on the extent of spontaneous hybridisation in wild Argentinian potato populations, which is not reflected in the current taxonomy and has significant consequences for germplasm conservation and breeding.Fil: Larrosa, Federico Héctor. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; ArgentinaFil: Maune, Juan Federico. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata; ArgentinaFil: Erazzú, L. E.. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Tucuman-Santiago del Estero. Estación Experimental Agropecuaria Famaillá; ArgentinaFil: Camadro, Elsa Lucila. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Buenos Aires Sur. Estación Experimental Agropecuaria Balcarce; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; ArgentinaWiley Blackwell Publishing, Inc2011-05info: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/11336/245851Larrosa, Federico Héctor; Maune, Juan Federico; Erazzú, L. E.; Camadro, Elsa Lucila; Meiotic abnormalities underlying pollen sterility in wild potato hybrids and spontaneous populations; Wiley Blackwell Publishing, Inc; Plant Biology; 14; 1; 5-2011; 223-2331435-8603CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/10.1111/j.1438-8677.2011.00470.xinfo:eu-repo/semantics/altIdentifier/doi/10.1111/j.1438-8677.2011.00470.xinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:46:56Zoai:ri.conicet.gov.ar:11336/245851instacron: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:34982025-09-03 09:46:56.408CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Meiotic abnormalities underlying pollen sterility in wild potato hybrids and spontaneous populations
title Meiotic abnormalities underlying pollen sterility in wild potato hybrids and spontaneous populations
spellingShingle Meiotic abnormalities underlying pollen sterility in wild potato hybrids and spontaneous populations
Larrosa, Federico Héctor
Male sterility
Solanum spp.
pollen morphology
spontaneous hybrids
wild potato species
title_short Meiotic abnormalities underlying pollen sterility in wild potato hybrids and spontaneous populations
title_full Meiotic abnormalities underlying pollen sterility in wild potato hybrids and spontaneous populations
title_fullStr Meiotic abnormalities underlying pollen sterility in wild potato hybrids and spontaneous populations
title_full_unstemmed Meiotic abnormalities underlying pollen sterility in wild potato hybrids and spontaneous populations
title_sort Meiotic abnormalities underlying pollen sterility in wild potato hybrids and spontaneous populations
dc.creator.none.fl_str_mv Larrosa, Federico Héctor
Maune, Juan Federico
Erazzú, L. E.
Camadro, Elsa Lucila
author Larrosa, Federico Héctor
author_facet Larrosa, Federico Héctor
Maune, Juan Federico
Erazzú, L. E.
Camadro, Elsa Lucila
author_role author
author2 Maune, Juan Federico
Erazzú, L. E.
Camadro, Elsa Lucila
author2_role author
author
author
dc.subject.none.fl_str_mv Male sterility
Solanum spp.
pollen morphology
spontaneous hybrids
wild potato species
topic Male sterility
Solanum spp.
pollen morphology
spontaneous hybrids
wild potato species
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Wild potato species are widely distributed in the Americas, where they spontaneously grow in very diverse habitats. These species ? with low chromosome differentiation ? form polyploid series with 2n = 2x, 3x, 4x and 6x (x = 12). They are isolated in nature by external and internal hybridisation barriers that can be incomplete, allowing hybridisation in areas of sympatry. Nevertheless, most accessions in germplasm banks, regardless of genetic background of the sampled spontaneous populations, have been assigned specific categories based on morphological characters. To further investigate the extent of hybridisation in the group and for comparative purposes, pollen viability was estimated in (i) artificial hybrids between a commercial cultivar (Cale´n INTA) of the common potato (tetraploid Solanum tuberosum ssp. tuberosum) and the tetraploid cytotype of the related wild species S. gourlayi, and (ii) samples of plants (accessions) and inflorescences of naturalpopulations from Argentina, tentatively classified as ?presumed hybrids? (S. infundibuliforme?S. gourlayi) and ?species? (S. infundibuliforme, S. gourlayi and S. chacoense). Regardless of origin, 98 out of 103 plants analysed had zero to 70% pollen viability (zero to 40% in eight of them). Pollen grains were of variable size and morphology and, in mostly male sterile plants, the only viable pollen grains were 2n and ⁄ or 4n. Furthermore, male sterile plants shared various abnormalities in meiosis I and II (unpaired chromosomes, unequal chromosome distribution,precocious ⁄ lagging chromosomes, parallel, tripolar, fused and multiple spindles, unequal size nuclei, dyads, triads and pentads in addition to normal tetrads, among others). These results provide novel evidence to support field observations of early potato botanists on the extent of spontaneous hybridisation in wild Argentinian potato populations, which is not reflected in the current taxonomy and has significant consequences for germplasm conservation and breeding.
Fil: Larrosa, Federico Héctor. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina
Fil: Maune, Juan Federico. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata; Argentina
Fil: Erazzú, L. E.. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Tucuman-Santiago del Estero. Estación Experimental Agropecuaria Famaillá; Argentina
Fil: Camadro, Elsa Lucila. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Buenos Aires Sur. Estación Experimental Agropecuaria Balcarce; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina
description Wild potato species are widely distributed in the Americas, where they spontaneously grow in very diverse habitats. These species ? with low chromosome differentiation ? form polyploid series with 2n = 2x, 3x, 4x and 6x (x = 12). They are isolated in nature by external and internal hybridisation barriers that can be incomplete, allowing hybridisation in areas of sympatry. Nevertheless, most accessions in germplasm banks, regardless of genetic background of the sampled spontaneous populations, have been assigned specific categories based on morphological characters. To further investigate the extent of hybridisation in the group and for comparative purposes, pollen viability was estimated in (i) artificial hybrids between a commercial cultivar (Cale´n INTA) of the common potato (tetraploid Solanum tuberosum ssp. tuberosum) and the tetraploid cytotype of the related wild species S. gourlayi, and (ii) samples of plants (accessions) and inflorescences of naturalpopulations from Argentina, tentatively classified as ?presumed hybrids? (S. infundibuliforme?S. gourlayi) and ?species? (S. infundibuliforme, S. gourlayi and S. chacoense). Regardless of origin, 98 out of 103 plants analysed had zero to 70% pollen viability (zero to 40% in eight of them). Pollen grains were of variable size and morphology and, in mostly male sterile plants, the only viable pollen grains were 2n and ⁄ or 4n. Furthermore, male sterile plants shared various abnormalities in meiosis I and II (unpaired chromosomes, unequal chromosome distribution,precocious ⁄ lagging chromosomes, parallel, tripolar, fused and multiple spindles, unequal size nuclei, dyads, triads and pentads in addition to normal tetrads, among others). These results provide novel evidence to support field observations of early potato botanists on the extent of spontaneous hybridisation in wild Argentinian potato populations, which is not reflected in the current taxonomy and has significant consequences for germplasm conservation and breeding.
publishDate 2011
dc.date.none.fl_str_mv 2011-05
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/11336/245851
Larrosa, Federico Héctor; Maune, Juan Federico; Erazzú, L. E.; Camadro, Elsa Lucila; Meiotic abnormalities underlying pollen sterility in wild potato hybrids and spontaneous populations; Wiley Blackwell Publishing, Inc; Plant Biology; 14; 1; 5-2011; 223-233
1435-8603
CONICET Digital
CONICET
url http://hdl.handle.net/11336/245851
identifier_str_mv Larrosa, Federico Héctor; Maune, Juan Federico; Erazzú, L. E.; Camadro, Elsa Lucila; Meiotic abnormalities underlying pollen sterility in wild potato hybrids and spontaneous populations; Wiley Blackwell Publishing, Inc; Plant Biology; 14; 1; 5-2011; 223-233
1435-8603
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://onlinelibrary.wiley.com/doi/10.1111/j.1438-8677.2011.00470.x
info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1438-8677.2011.00470.x
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 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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