Threshold modelling Lolium multiflorum seed germination: Effects of Neotyphodium endophyte infection and storage environment

Autores
Gundel, Pedro Emilio; Martinez-Ghersa, Maria Alejandra; Ghersa, Claudio Marco
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Several forage species establish mutualistic associations with vertically-transmitted endophytic fungi that improve their fitness. However, the endophyte may be related to livestock toxicosis and hence ageing seeds has been used to remove the fungus since it loses viability before the seeds. The effect of endophyte on seed quality has rarely been studied. We conducted an experiment to study the relationship between the endophyte Neotyphodium occultons and seed germination characteristics in Lolium multiflorum. Infected and non-infected seeds were stored under six different conditions and seed germination rate and viability were monitored over two years. Seed water content was evaluated and the ageing-time model was used to describe the dynamics of seed germination in relation to storage period. The model provided a good description of the seed germination, and parameters appear to work better when seed viability is affected. The endophyte not only affected negatively the seed viability but also the germination rate. Although the endophyte modified the water content, this effect was not associated with the negative effect on viability. Since non-toxic endophytes are being selected to improve forage grasses, further research should incorporate the endophyte viability dynamics in the population-based model to better predict both seed quality decay and endophyte losses.
Fil: Gundel, Pedro Emilio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía; Argentina. MTT Agrifood Research Finland; Finlandia
Fil: Martinez-Ghersa, Maria Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía; Argentina
Fil: Ghersa, Claudio Marco. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía; Argentina
Materia
Seed Germination
Seed Longevity
Grass-Endophyte Interaction
Fungal Endophyte
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:11336/60399
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Threshold modelling Lolium multiflorum seed germination: Effects of Neotyphodium endophyte infection and storage environmentGundel, Pedro EmilioMartinez-Ghersa, Maria AlejandraGhersa, Claudio MarcoSeed GerminationSeed LongevityGrass-Endophyte InteractionFungal Endophytehttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Several forage species establish mutualistic associations with vertically-transmitted endophytic fungi that improve their fitness. However, the endophyte may be related to livestock toxicosis and hence ageing seeds has been used to remove the fungus since it loses viability before the seeds. The effect of endophyte on seed quality has rarely been studied. We conducted an experiment to study the relationship between the endophyte Neotyphodium occultons and seed germination characteristics in Lolium multiflorum. Infected and non-infected seeds were stored under six different conditions and seed germination rate and viability were monitored over two years. Seed water content was evaluated and the ageing-time model was used to describe the dynamics of seed germination in relation to storage period. The model provided a good description of the seed germination, and parameters appear to work better when seed viability is affected. The endophyte not only affected negatively the seed viability but also the germination rate. Although the endophyte modified the water content, this effect was not associated with the negative effect on viability. Since non-toxic endophytes are being selected to improve forage grasses, further research should incorporate the endophyte viability dynamics in the population-based model to better predict both seed quality decay and endophyte losses.Fil: Gundel, Pedro Emilio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía; Argentina. MTT Agrifood Research Finland; FinlandiaFil: Martinez-Ghersa, Maria Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía; ArgentinaFil: Ghersa, Claudio Marco. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía; ArgentinaInternational Seed Testing Association2012-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/60399Gundel, Pedro Emilio; Martinez-Ghersa, Maria Alejandra; Ghersa, Claudio Marco; Threshold modelling Lolium multiflorum seed germination: Effects of Neotyphodium endophyte infection and storage environment; International Seed Testing Association; Seed Science And Technology; 40; 1; 9-2012; 51-620251-0952CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.15258/sst.2012.40.1.06info:eu-repo/semantics/altIdentifier/url/http://www.ingentaconnect.com/content/ista/sst/2012/00000040/00000001/art00006info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:10:10Zoai:ri.conicet.gov.ar:11336/60399instacron: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 10:10:10.578CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Threshold modelling Lolium multiflorum seed germination: Effects of Neotyphodium endophyte infection and storage environment
title Threshold modelling Lolium multiflorum seed germination: Effects of Neotyphodium endophyte infection and storage environment
spellingShingle Threshold modelling Lolium multiflorum seed germination: Effects of Neotyphodium endophyte infection and storage environment
Gundel, Pedro Emilio
Seed Germination
Seed Longevity
Grass-Endophyte Interaction
Fungal Endophyte
title_short Threshold modelling Lolium multiflorum seed germination: Effects of Neotyphodium endophyte infection and storage environment
title_full Threshold modelling Lolium multiflorum seed germination: Effects of Neotyphodium endophyte infection and storage environment
title_fullStr Threshold modelling Lolium multiflorum seed germination: Effects of Neotyphodium endophyte infection and storage environment
title_full_unstemmed Threshold modelling Lolium multiflorum seed germination: Effects of Neotyphodium endophyte infection and storage environment
title_sort Threshold modelling Lolium multiflorum seed germination: Effects of Neotyphodium endophyte infection and storage environment
dc.creator.none.fl_str_mv Gundel, Pedro Emilio
Martinez-Ghersa, Maria Alejandra
Ghersa, Claudio Marco
author Gundel, Pedro Emilio
author_facet Gundel, Pedro Emilio
Martinez-Ghersa, Maria Alejandra
Ghersa, Claudio Marco
author_role author
author2 Martinez-Ghersa, Maria Alejandra
Ghersa, Claudio Marco
author2_role author
author
dc.subject.none.fl_str_mv Seed Germination
Seed Longevity
Grass-Endophyte Interaction
Fungal Endophyte
topic Seed Germination
Seed Longevity
Grass-Endophyte Interaction
Fungal Endophyte
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Several forage species establish mutualistic associations with vertically-transmitted endophytic fungi that improve their fitness. However, the endophyte may be related to livestock toxicosis and hence ageing seeds has been used to remove the fungus since it loses viability before the seeds. The effect of endophyte on seed quality has rarely been studied. We conducted an experiment to study the relationship between the endophyte Neotyphodium occultons and seed germination characteristics in Lolium multiflorum. Infected and non-infected seeds were stored under six different conditions and seed germination rate and viability were monitored over two years. Seed water content was evaluated and the ageing-time model was used to describe the dynamics of seed germination in relation to storage period. The model provided a good description of the seed germination, and parameters appear to work better when seed viability is affected. The endophyte not only affected negatively the seed viability but also the germination rate. Although the endophyte modified the water content, this effect was not associated with the negative effect on viability. Since non-toxic endophytes are being selected to improve forage grasses, further research should incorporate the endophyte viability dynamics in the population-based model to better predict both seed quality decay and endophyte losses.
Fil: Gundel, Pedro Emilio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía; Argentina. MTT Agrifood Research Finland; Finlandia
Fil: Martinez-Ghersa, Maria Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía; Argentina
Fil: Ghersa, Claudio Marco. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía; Argentina
description Several forage species establish mutualistic associations with vertically-transmitted endophytic fungi that improve their fitness. However, the endophyte may be related to livestock toxicosis and hence ageing seeds has been used to remove the fungus since it loses viability before the seeds. The effect of endophyte on seed quality has rarely been studied. We conducted an experiment to study the relationship between the endophyte Neotyphodium occultons and seed germination characteristics in Lolium multiflorum. Infected and non-infected seeds were stored under six different conditions and seed germination rate and viability were monitored over two years. Seed water content was evaluated and the ageing-time model was used to describe the dynamics of seed germination in relation to storage period. The model provided a good description of the seed germination, and parameters appear to work better when seed viability is affected. The endophyte not only affected negatively the seed viability but also the germination rate. Although the endophyte modified the water content, this effect was not associated with the negative effect on viability. Since non-toxic endophytes are being selected to improve forage grasses, further research should incorporate the endophyte viability dynamics in the population-based model to better predict both seed quality decay and endophyte losses.
publishDate 2012
dc.date.none.fl_str_mv 2012-09
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/11336/60399
Gundel, Pedro Emilio; Martinez-Ghersa, Maria Alejandra; Ghersa, Claudio Marco; Threshold modelling Lolium multiflorum seed germination: Effects of Neotyphodium endophyte infection and storage environment; International Seed Testing Association; Seed Science And Technology; 40; 1; 9-2012; 51-62
0251-0952
CONICET Digital
CONICET
url http://hdl.handle.net/11336/60399
identifier_str_mv Gundel, Pedro Emilio; Martinez-Ghersa, Maria Alejandra; Ghersa, Claudio Marco; Threshold modelling Lolium multiflorum seed germination: Effects of Neotyphodium endophyte infection and storage environment; International Seed Testing Association; Seed Science And Technology; 40; 1; 9-2012; 51-62
0251-0952
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.15258/sst.2012.40.1.06
info:eu-repo/semantics/altIdentifier/url/http://www.ingentaconnect.com/content/ista/sst/2012/00000040/00000001/art00006
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
application/pdf
dc.publisher.none.fl_str_mv International Seed Testing Association
publisher.none.fl_str_mv International Seed Testing Association
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_ 1842270109568073728
score 13.13397

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