Ecotype-specific effects of fungal endophytes on germination responses of seeds of the South American wild forage grass Bromus auleticus

Autores
Stefanoni Rubio, Pablo Jose; Gundel, Pedro Emilio; Novas, María Victoria; Iannone, Leopoldo Javier
Año de publicación
2021
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Bromus auleticus is a winter wild species with promissory characteristics for domestication as forage that inhabits temperate-warm grasslands from a wide region from South America. Populations from regions with different environmental conditions are considered as ecotypes and are associated with different seedborne Epichloë fungal endophytes. Association with Epichloë provides B. auleticus with increased growth capacity and resistance against pathogens. The seeds mature at the end of spring and germinate in autumn, remaining dormant during wet and warm summer. As the persistence of Epichloë endophytes in the seed is highly sensitive to temperature and humidity, we studied how the endophytes modulate seed germination in response to these factors in two B. auleticus ecotypes named La Pampa (LP) and El Palmar (EP). We also studied how environmental factors during germination affect endophyte survival. In the LP ecotype, adapted to coldest temperatures in autumn, Epichloë improved final germination under alternating temperatures, but had no effects on germination inhibition imposed by low water availability. In the EP ecotype, adapted to warm humid summer and autumn, the endophyte promoted germination at constant 25°C and alternating 15/25°C temperatures, and prevented germination at low water potentials. At 30°C, seed germination was inhibited and whereas seeds remained viable, endophyte survival was significantly lowered. The effect of Epichloë on B. auleticus seed germination was ecotype-specific: promoting germination at alternating temperatures in La Pampa ecotype or at high temperatures in El Palmar ecotype, while inhibiting it at low water availabilities, could be an endophyte-mediated ecotypic strategy minimising endophyte mortality and increasing seedling establishment.
Fil: Stefanoni Rubio, Pablo Jose. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Micología y Botánica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Micología y Botánica; Argentina
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. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina. Universidad de Talca; Chile
Fil: Novas, María Victoria. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Micología y Botánica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Micología y Botánica; Argentina
Fil: Iannone, Leopoldo Javier. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Micología y Botánica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Micología y Botánica; Argentina
Materia
BROMUS AULETICUS
ENDOPHYTES
EPICHLOË
SEED GERMINATION
WATER POTENTIAL
Nivel de accesibilidad
acceso embargado
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:11336/147425
Acceder
id CONICETDig_8b4519d6285f232d16f7f93c12030587
oai_identifier_str oai:ri.conicet.gov.ar:11336/147425
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Ecotype-specific effects of fungal endophytes on germination responses of seeds of the South American wild forage grass Bromus auleticusStefanoni Rubio, Pablo JoseGundel, Pedro EmilioNovas, María VictoriaIannone, Leopoldo JavierBROMUS AULETICUSENDOPHYTESEPICHLOËSEED GERMINATIONWATER POTENTIALhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Bromus auleticus is a winter wild species with promissory characteristics for domestication as forage that inhabits temperate-warm grasslands from a wide region from South America. Populations from regions with different environmental conditions are considered as ecotypes and are associated with different seedborne Epichloë fungal endophytes. Association with Epichloë provides B. auleticus with increased growth capacity and resistance against pathogens. The seeds mature at the end of spring and germinate in autumn, remaining dormant during wet and warm summer. As the persistence of Epichloë endophytes in the seed is highly sensitive to temperature and humidity, we studied how the endophytes modulate seed germination in response to these factors in two B. auleticus ecotypes named La Pampa (LP) and El Palmar (EP). We also studied how environmental factors during germination affect endophyte survival. In the LP ecotype, adapted to coldest temperatures in autumn, Epichloë improved final germination under alternating temperatures, but had no effects on germination inhibition imposed by low water availability. In the EP ecotype, adapted to warm humid summer and autumn, the endophyte promoted germination at constant 25°C and alternating 15/25°C temperatures, and prevented germination at low water potentials. At 30°C, seed germination was inhibited and whereas seeds remained viable, endophyte survival was significantly lowered. The effect of Epichloë on B. auleticus seed germination was ecotype-specific: promoting germination at alternating temperatures in La Pampa ecotype or at high temperatures in El Palmar ecotype, while inhibiting it at low water availabilities, could be an endophyte-mediated ecotypic strategy minimising endophyte mortality and increasing seedling establishment.Fil: Stefanoni Rubio, Pablo Jose. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Micología y Botánica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Micología y Botánica; ArgentinaFil: 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. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina. Universidad de Talca; ChileFil: Novas, María Victoria. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Micología y Botánica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Micología y Botánica; ArgentinaFil: Iannone, Leopoldo Javier. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Micología y Botánica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Micología y Botánica; ArgentinaWiley Blackwell Publishing, Inc2021-09-26info:eu-repo/date/embargoEnd/2022-04-26info: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/11336/147425Stefanoni Rubio, Pablo Jose; Gundel, Pedro Emilio; Novas, María Victoria; Iannone, Leopoldo Javier; Ecotype-specific effects of fungal endophytes on germination responses of seeds of the South American wild forage grass Bromus auleticus; Wiley Blackwell Publishing, Inc; Annals of Applied Biology; 26-9-2021; 1-120003-47461744-7348CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1111/aab.12732info:eu-repo/semantics/altIdentifier/doi/10.1111/aab.12732info:eu-repo/semantics/embargoedAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:49:32Zoai:ri.conicet.gov.ar:11336/147425instacron: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 09:49:32.531CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Ecotype-specific effects of fungal endophytes on germination responses of seeds of the South American wild forage grass Bromus auleticus
title Ecotype-specific effects of fungal endophytes on germination responses of seeds of the South American wild forage grass Bromus auleticus
spellingShingle Ecotype-specific effects of fungal endophytes on germination responses of seeds of the South American wild forage grass Bromus auleticus
Stefanoni Rubio, Pablo Jose
BROMUS AULETICUS
ENDOPHYTES
EPICHLOË
SEED GERMINATION
WATER POTENTIAL
title_short Ecotype-specific effects of fungal endophytes on germination responses of seeds of the South American wild forage grass Bromus auleticus
title_full Ecotype-specific effects of fungal endophytes on germination responses of seeds of the South American wild forage grass Bromus auleticus
title_fullStr Ecotype-specific effects of fungal endophytes on germination responses of seeds of the South American wild forage grass Bromus auleticus
title_full_unstemmed Ecotype-specific effects of fungal endophytes on germination responses of seeds of the South American wild forage grass Bromus auleticus
title_sort Ecotype-specific effects of fungal endophytes on germination responses of seeds of the South American wild forage grass Bromus auleticus
dc.creator.none.fl_str_mv Stefanoni Rubio, Pablo Jose
Gundel, Pedro Emilio
Novas, María Victoria
Iannone, Leopoldo Javier
author Stefanoni Rubio, Pablo Jose
author_facet Stefanoni Rubio, Pablo Jose
Gundel, Pedro Emilio
Novas, María Victoria
Iannone, Leopoldo Javier
author_role author
author2 Gundel, Pedro Emilio
Novas, María Victoria
Iannone, Leopoldo Javier
author2_role author
author
author
dc.subject.none.fl_str_mv BROMUS AULETICUS
ENDOPHYTES
EPICHLOË
SEED GERMINATION
WATER POTENTIAL
topic BROMUS AULETICUS
ENDOPHYTES
EPICHLOË
SEED GERMINATION
WATER POTENTIAL
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Bromus auleticus is a winter wild species with promissory characteristics for domestication as forage that inhabits temperate-warm grasslands from a wide region from South America. Populations from regions with different environmental conditions are considered as ecotypes and are associated with different seedborne Epichloë fungal endophytes. Association with Epichloë provides B. auleticus with increased growth capacity and resistance against pathogens. The seeds mature at the end of spring and germinate in autumn, remaining dormant during wet and warm summer. As the persistence of Epichloë endophytes in the seed is highly sensitive to temperature and humidity, we studied how the endophytes modulate seed germination in response to these factors in two B. auleticus ecotypes named La Pampa (LP) and El Palmar (EP). We also studied how environmental factors during germination affect endophyte survival. In the LP ecotype, adapted to coldest temperatures in autumn, Epichloë improved final germination under alternating temperatures, but had no effects on germination inhibition imposed by low water availability. In the EP ecotype, adapted to warm humid summer and autumn, the endophyte promoted germination at constant 25°C and alternating 15/25°C temperatures, and prevented germination at low water potentials. At 30°C, seed germination was inhibited and whereas seeds remained viable, endophyte survival was significantly lowered. The effect of Epichloë on B. auleticus seed germination was ecotype-specific: promoting germination at alternating temperatures in La Pampa ecotype or at high temperatures in El Palmar ecotype, while inhibiting it at low water availabilities, could be an endophyte-mediated ecotypic strategy minimising endophyte mortality and increasing seedling establishment.
Fil: Stefanoni Rubio, Pablo Jose. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Micología y Botánica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Micología y Botánica; Argentina
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. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina. Universidad de Talca; Chile
Fil: Novas, María Victoria. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Micología y Botánica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Micología y Botánica; Argentina
Fil: Iannone, Leopoldo Javier. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Micología y Botánica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Micología y Botánica; Argentina
description Bromus auleticus is a winter wild species with promissory characteristics for domestication as forage that inhabits temperate-warm grasslands from a wide region from South America. Populations from regions with different environmental conditions are considered as ecotypes and are associated with different seedborne Epichloë fungal endophytes. Association with Epichloë provides B. auleticus with increased growth capacity and resistance against pathogens. The seeds mature at the end of spring and germinate in autumn, remaining dormant during wet and warm summer. As the persistence of Epichloë endophytes in the seed is highly sensitive to temperature and humidity, we studied how the endophytes modulate seed germination in response to these factors in two B. auleticus ecotypes named La Pampa (LP) and El Palmar (EP). We also studied how environmental factors during germination affect endophyte survival. In the LP ecotype, adapted to coldest temperatures in autumn, Epichloë improved final germination under alternating temperatures, but had no effects on germination inhibition imposed by low water availability. In the EP ecotype, adapted to warm humid summer and autumn, the endophyte promoted germination at constant 25°C and alternating 15/25°C temperatures, and prevented germination at low water potentials. At 30°C, seed germination was inhibited and whereas seeds remained viable, endophyte survival was significantly lowered. The effect of Epichloë on B. auleticus seed germination was ecotype-specific: promoting germination at alternating temperatures in La Pampa ecotype or at high temperatures in El Palmar ecotype, while inhibiting it at low water availabilities, could be an endophyte-mediated ecotypic strategy minimising endophyte mortality and increasing seedling establishment.
publishDate 2021
dc.date.none.fl_str_mv 2021-09-26
info:eu-repo/date/embargoEnd/2022-04-26
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/11336/147425
Stefanoni Rubio, Pablo Jose; Gundel, Pedro Emilio; Novas, María Victoria; Iannone, Leopoldo Javier; Ecotype-specific effects of fungal endophytes on germination responses of seeds of the South American wild forage grass Bromus auleticus; Wiley Blackwell Publishing, Inc; Annals of Applied Biology; 26-9-2021; 1-12
0003-4746
1744-7348
CONICET Digital
CONICET
url http://hdl.handle.net/11336/147425
identifier_str_mv Stefanoni Rubio, Pablo Jose; Gundel, Pedro Emilio; Novas, María Victoria; Iannone, Leopoldo Javier; Ecotype-specific effects of fungal endophytes on germination responses of seeds of the South American wild forage grass Bromus auleticus; Wiley Blackwell Publishing, Inc; Annals of Applied Biology; 26-9-2021; 1-12
0003-4746
1744-7348
CONICET Digital
CONICET
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language eng
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info:eu-repo/semantics/altIdentifier/doi/10.1111/aab.12732
dc.rights.none.fl_str_mv info:eu-repo/semantics/embargoedAccess
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eu_rights_str_mv embargoedAccess
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)
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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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