Can the DSE Fungus Exserohilum rostratum Mitigate the Effect of Salinity on the Grass Chloris gayana?

Autores
Tobar Gomez, Natalia Elizabeth; Ameijeiras, Marcos; Benitez, Hernan E.; Spagnoletti, Federico Nicolás; Chiocchio, Viviana Monica; Lavado, Raul Silvio
Año de publicación
2025
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Dark septate endophytes (DSEs) are commonly found in saline environments, such as the Flooding Pampas (Argentina), where the forage grass Chloris gayana has been introduced. This study evaluated the effect of salinity on the DSE fungus Exserohilum rostratum, isolated from C. gayana, and its contribution to the grass’s salinity tolerance. Two greenhouse experiments were conducted under three salinity levels (0, 40, and 80 meq Na·L −1 ), with and without fungal inoculation. Fungal growth, root colonization, functional traits, plant biomass, chemical composition, and salinity tolerance indices were assessed. The fungus tolerated salinity and colonized roots, showing qualitative evidence of enzyme production and phosphate solubilization. In both experiments, shoot and root biomass decreased with increasing salinity. Inoculation significantly enhanced shoot biomass only under non-saline conditions in the first experiment, whereas in the second experiment no inoculation effect was observed on shoots. For roots, no effect of inoculation occurred in the first experiment, but a positive interaction between salinity and inoculation was recorded in the second experiment, where moderate salinity increased root biomass in inoculated plants. The K/Na and Ca/Na ratios decreased under salinity regardless of inoculation, indicating limited influence on ionic balance. These results suggest that although E. rostratum tolerates salinity and expresses functional traits, its ability to enhance plant performance under stress is context-dependent and restricted to specific conditions.
Fil: Tobar Gomez, Natalia Elizabeth. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Biología Aplicada y Alimentos. Cátedra de Microbiología Agrícola; Argentina
Fil: Ameijeiras, Marcos. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Ingeniería Agrícola y Uso de la Tierra. Cátedra de Fertilidad y Fertilizantes; Argentina
Fil: Benitez, Hernan E.. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Ingeniería Agrícola y Uso de la Tierra. Cátedra de Fertilidad y Fertilizantes; Argentina
Fil: Spagnoletti, Federico Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales; Argentina
Fil: Chiocchio, Viviana Monica. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales; Argentina
Fil: Lavado, Raul Silvio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales; Argentina
Materia
Salt-affected soils
Dark septate endophytes
Salt tolerance
K/Na ratio
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/291084
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Can the DSE Fungus Exserohilum rostratum Mitigate the Effect of Salinity on the Grass Chloris gayana?Tobar Gomez, Natalia ElizabethAmeijeiras, MarcosBenitez, Hernan E.Spagnoletti, Federico NicolásChiocchio, Viviana MonicaLavado, Raul SilvioSalt-affected soilsDark septate endophytesSalt toleranceK/Na ratiohttps://purl.org/becyt/ford/4.5https://purl.org/becyt/ford/4Dark septate endophytes (DSEs) are commonly found in saline environments, such as the Flooding Pampas (Argentina), where the forage grass Chloris gayana has been introduced. This study evaluated the effect of salinity on the DSE fungus Exserohilum rostratum, isolated from C. gayana, and its contribution to the grass’s salinity tolerance. Two greenhouse experiments were conducted under three salinity levels (0, 40, and 80 meq Na·L −1 ), with and without fungal inoculation. Fungal growth, root colonization, functional traits, plant biomass, chemical composition, and salinity tolerance indices were assessed. The fungus tolerated salinity and colonized roots, showing qualitative evidence of enzyme production and phosphate solubilization. In both experiments, shoot and root biomass decreased with increasing salinity. Inoculation significantly enhanced shoot biomass only under non-saline conditions in the first experiment, whereas in the second experiment no inoculation effect was observed on shoots. For roots, no effect of inoculation occurred in the first experiment, but a positive interaction between salinity and inoculation was recorded in the second experiment, where moderate salinity increased root biomass in inoculated plants. The K/Na and Ca/Na ratios decreased under salinity regardless of inoculation, indicating limited influence on ionic balance. These results suggest that although E. rostratum tolerates salinity and expresses functional traits, its ability to enhance plant performance under stress is context-dependent and restricted to specific conditions.Fil: Tobar Gomez, Natalia Elizabeth. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Biología Aplicada y Alimentos. Cátedra de Microbiología Agrícola; ArgentinaFil: Ameijeiras, Marcos. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Ingeniería Agrícola y Uso de la Tierra. Cátedra de Fertilidad y Fertilizantes; ArgentinaFil: Benitez, Hernan E.. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Ingeniería Agrícola y Uso de la Tierra. Cátedra de Fertilidad y Fertilizantes; ArgentinaFil: Spagnoletti, Federico Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales; ArgentinaFil: Chiocchio, Viviana Monica. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales; ArgentinaFil: Lavado, Raul Silvio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales; ArgentinaMDPI2025-08info: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/11336/291084Tobar Gomez, Natalia Elizabeth; Ameijeiras, Marcos; Benitez, Hernan E.; Spagnoletti, Federico Nicolás; Chiocchio, Viviana Monica; et al.; Can the DSE Fungus Exserohilum rostratum Mitigate the Effect of Salinity on the Grass Chloris gayana?; MDPI; Plants; 14; 16; 8-2025; 1-132223-7747CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.mdpi.com/2223-7747/14/16/2537info:eu-repo/semantics/altIdentifier/doi/10.3390/plants14162537info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2026-08-25T14:52:51Zoai:ri.conicet.gov.ar:11336/291084instacron: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:34982026-08-25 14:52:52.089CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Can the DSE Fungus Exserohilum rostratum Mitigate the Effect of Salinity on the Grass Chloris gayana?
title Can the DSE Fungus Exserohilum rostratum Mitigate the Effect of Salinity on the Grass Chloris gayana?
spellingShingle Can the DSE Fungus Exserohilum rostratum Mitigate the Effect of Salinity on the Grass Chloris gayana?
Tobar Gomez, Natalia Elizabeth
Salt-affected soils
Dark septate endophytes
Salt tolerance
K/Na ratio
title_short Can the DSE Fungus Exserohilum rostratum Mitigate the Effect of Salinity on the Grass Chloris gayana?
title_full Can the DSE Fungus Exserohilum rostratum Mitigate the Effect of Salinity on the Grass Chloris gayana?
title_fullStr Can the DSE Fungus Exserohilum rostratum Mitigate the Effect of Salinity on the Grass Chloris gayana?
title_full_unstemmed Can the DSE Fungus Exserohilum rostratum Mitigate the Effect of Salinity on the Grass Chloris gayana?
title_sort Can the DSE Fungus Exserohilum rostratum Mitigate the Effect of Salinity on the Grass Chloris gayana?
dc.creator.none.fl_str_mv Tobar Gomez, Natalia Elizabeth
Ameijeiras, Marcos
Benitez, Hernan E.
Spagnoletti, Federico Nicolás
Chiocchio, Viviana Monica
Lavado, Raul Silvio
author Tobar Gomez, Natalia Elizabeth
author_facet Tobar Gomez, Natalia Elizabeth
Ameijeiras, Marcos
Benitez, Hernan E.
Spagnoletti, Federico Nicolás
Chiocchio, Viviana Monica
Lavado, Raul Silvio
author_role author
author2 Ameijeiras, Marcos
Benitez, Hernan E.
Spagnoletti, Federico Nicolás
Chiocchio, Viviana Monica
Lavado, Raul Silvio
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Salt-affected soils
Dark septate endophytes
Salt tolerance
K/Na ratio
topic Salt-affected soils
Dark septate endophytes
Salt tolerance
K/Na ratio
purl_subject.fl_str_mv https://purl.org/becyt/ford/4.5
https://purl.org/becyt/ford/4
dc.description.none.fl_txt_mv Dark septate endophytes (DSEs) are commonly found in saline environments, such as the Flooding Pampas (Argentina), where the forage grass Chloris gayana has been introduced. This study evaluated the effect of salinity on the DSE fungus Exserohilum rostratum, isolated from C. gayana, and its contribution to the grass’s salinity tolerance. Two greenhouse experiments were conducted under three salinity levels (0, 40, and 80 meq Na·L −1 ), with and without fungal inoculation. Fungal growth, root colonization, functional traits, plant biomass, chemical composition, and salinity tolerance indices were assessed. The fungus tolerated salinity and colonized roots, showing qualitative evidence of enzyme production and phosphate solubilization. In both experiments, shoot and root biomass decreased with increasing salinity. Inoculation significantly enhanced shoot biomass only under non-saline conditions in the first experiment, whereas in the second experiment no inoculation effect was observed on shoots. For roots, no effect of inoculation occurred in the first experiment, but a positive interaction between salinity and inoculation was recorded in the second experiment, where moderate salinity increased root biomass in inoculated plants. The K/Na and Ca/Na ratios decreased under salinity regardless of inoculation, indicating limited influence on ionic balance. These results suggest that although E. rostratum tolerates salinity and expresses functional traits, its ability to enhance plant performance under stress is context-dependent and restricted to specific conditions.
Fil: Tobar Gomez, Natalia Elizabeth. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Biología Aplicada y Alimentos. Cátedra de Microbiología Agrícola; Argentina
Fil: Ameijeiras, Marcos. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Ingeniería Agrícola y Uso de la Tierra. Cátedra de Fertilidad y Fertilizantes; Argentina
Fil: Benitez, Hernan E.. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Ingeniería Agrícola y Uso de la Tierra. Cátedra de Fertilidad y Fertilizantes; Argentina
Fil: Spagnoletti, Federico Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales; Argentina
Fil: Chiocchio, Viviana Monica. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales; Argentina
Fil: Lavado, Raul Silvio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales; Argentina
description Dark septate endophytes (DSEs) are commonly found in saline environments, such as the Flooding Pampas (Argentina), where the forage grass Chloris gayana has been introduced. This study evaluated the effect of salinity on the DSE fungus Exserohilum rostratum, isolated from C. gayana, and its contribution to the grass’s salinity tolerance. Two greenhouse experiments were conducted under three salinity levels (0, 40, and 80 meq Na·L −1 ), with and without fungal inoculation. Fungal growth, root colonization, functional traits, plant biomass, chemical composition, and salinity tolerance indices were assessed. The fungus tolerated salinity and colonized roots, showing qualitative evidence of enzyme production and phosphate solubilization. In both experiments, shoot and root biomass decreased with increasing salinity. Inoculation significantly enhanced shoot biomass only under non-saline conditions in the first experiment, whereas in the second experiment no inoculation effect was observed on shoots. For roots, no effect of inoculation occurred in the first experiment, but a positive interaction between salinity and inoculation was recorded in the second experiment, where moderate salinity increased root biomass in inoculated plants. The K/Na and Ca/Na ratios decreased under salinity regardless of inoculation, indicating limited influence on ionic balance. These results suggest that although E. rostratum tolerates salinity and expresses functional traits, its ability to enhance plant performance under stress is context-dependent and restricted to specific conditions.
publishDate 2025
dc.date.none.fl_str_mv 2025-08
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/11336/291084
Tobar Gomez, Natalia Elizabeth; Ameijeiras, Marcos; Benitez, Hernan E.; Spagnoletti, Federico Nicolás; Chiocchio, Viviana Monica; et al.; Can the DSE Fungus Exserohilum rostratum Mitigate the Effect of Salinity on the Grass Chloris gayana?; MDPI; Plants; 14; 16; 8-2025; 1-13
2223-7747
CONICET Digital
CONICET
url http://hdl.handle.net/11336/291084
identifier_str_mv Tobar Gomez, Natalia Elizabeth; Ameijeiras, Marcos; Benitez, Hernan E.; Spagnoletti, Federico Nicolás; Chiocchio, Viviana Monica; et al.; Can the DSE Fungus Exserohilum rostratum Mitigate the Effect of Salinity on the Grass Chloris gayana?; MDPI; Plants; 14; 16; 8-2025; 1-13
2223-7747
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://www.mdpi.com/2223-7747/14/16/2537
info:eu-repo/semantics/altIdentifier/doi/10.3390/plants14162537
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
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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