Effect of water activity and temperature on growth of Alternaria alternata on a synthetic tomato medium

Autores
Pose, Graciela Noemi; Patriarca, Andrea Rosana; Kyanko, María V.; Pardo, Alejandro Guillermo; Fernández Pinto, Virginia
Año de publicación
2009
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Alternaria alternata is a toxigenic fungus, predominantly responsible for Blackmould of ripe tomato fruits, a disease frequently causing substantial losses of tomatoes, especially those used for canning. The objective of this study was to determine the effect of water activity (aw, 0.904, 0.922, 0.954, 0.982) and temperature (6, 15, 21 and 35 °C) on germination and radial growth rate on a synthetic tomato medium of a cocktail inoculum of five strains of A. alternata isolated from tomato fruits affected by Blackmould. The shortest germination time (1.5 days) was observed at 0.982 aw, both at 21 °C and 35 °C. The germination time increased with a reduction on aw. The fastest growth rate was registered at 0.982 aw and 21 °C (8.31 mm/day). Growth rates were higher when aw increased. No growth or germination was observed at the lowest aw level evaluated (0.904) after 100 days of incubation at 6 °C and 15 °C. A temperature of 6 °C caused a significant reduction in growth rates, even at the optimum aw level. The knowledge on the ecophysiology of the fungus in this substrate is necessary to elaborate future strategies to prevent its development and evaluate the consumer health risk.
Fil: Pose, Graciela Noemi. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología. Laboratorio de Micología Molecular; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Patriarca, Andrea Rosana. 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: Kyanko, María V.. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología. Laboratorio de Micología Molecular; Argentina
Fil: Pardo, Alejandro Guillermo. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología. Laboratorio de Micología Molecular; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Fernández Pinto, Virginia. 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
Alternaria Alternata
Water Activity
Temperature
Tomato
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/26924
Acceder
id CONICETDig_9f24781a669ebf8ef98374b47a6434b5
oai_identifier_str oai:ri.conicet.gov.ar:11336/26924
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Effect of water activity and temperature on growth of Alternaria alternata on a synthetic tomato mediumPose, Graciela NoemiPatriarca, Andrea RosanaKyanko, María V.Pardo, Alejandro GuillermoFernández Pinto, VirginiaAlternaria AlternataWater ActivityTemperatureTomatohttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Alternaria alternata is a toxigenic fungus, predominantly responsible for Blackmould of ripe tomato fruits, a disease frequently causing substantial losses of tomatoes, especially those used for canning. The objective of this study was to determine the effect of water activity (aw, 0.904, 0.922, 0.954, 0.982) and temperature (6, 15, 21 and 35 °C) on germination and radial growth rate on a synthetic tomato medium of a cocktail inoculum of five strains of A. alternata isolated from tomato fruits affected by Blackmould. The shortest germination time (1.5 days) was observed at 0.982 aw, both at 21 °C and 35 °C. The germination time increased with a reduction on aw. The fastest growth rate was registered at 0.982 aw and 21 °C (8.31 mm/day). Growth rates were higher when aw increased. No growth or germination was observed at the lowest aw level evaluated (0.904) after 100 days of incubation at 6 °C and 15 °C. A temperature of 6 °C caused a significant reduction in growth rates, even at the optimum aw level. The knowledge on the ecophysiology of the fungus in this substrate is necessary to elaborate future strategies to prevent its development and evaluate the consumer health risk.Fil: Pose, Graciela Noemi. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología. Laboratorio de Micología Molecular; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Patriarca, Andrea Rosana. 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: Kyanko, María V.. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología. Laboratorio de Micología Molecular; ArgentinaFil: Pardo, Alejandro Guillermo. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología. Laboratorio de Micología Molecular; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Fernández Pinto, Virginia. 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; ArgentinaElsevier Science2009-07-24info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/26924Pose, Graciela Noemi; Patriarca, Andrea Rosana; Kyanko, María V.; Pardo, Alejandro Guillermo; Fernández Pinto, Virginia; Effect of water activity and temperature on growth of Alternaria alternata on a synthetic tomato medium; Elsevier Science; International Journal of Food Microbiology; 135; 1; 24-7-2009; 60-630168-16051879-3460CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0168160509003651info:eu-repo/semantics/altIdentifier/doi/10.1016/j.ijfoodmicro.2009.07.018info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:34:33Zoai:ri.conicet.gov.ar:11336/26924instacron: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:34982025-10-15 15:34:33.925CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Effect of water activity and temperature on growth of Alternaria alternata on a synthetic tomato medium
title Effect of water activity and temperature on growth of Alternaria alternata on a synthetic tomato medium
spellingShingle Effect of water activity and temperature on growth of Alternaria alternata on a synthetic tomato medium
Pose, Graciela Noemi
Alternaria Alternata
Water Activity
Temperature
Tomato
title_short Effect of water activity and temperature on growth of Alternaria alternata on a synthetic tomato medium
title_full Effect of water activity and temperature on growth of Alternaria alternata on a synthetic tomato medium
title_fullStr Effect of water activity and temperature on growth of Alternaria alternata on a synthetic tomato medium
title_full_unstemmed Effect of water activity and temperature on growth of Alternaria alternata on a synthetic tomato medium
title_sort Effect of water activity and temperature on growth of Alternaria alternata on a synthetic tomato medium
dc.creator.none.fl_str_mv Pose, Graciela Noemi
Patriarca, Andrea Rosana
Kyanko, María V.
Pardo, Alejandro Guillermo
Fernández Pinto, Virginia
author Pose, Graciela Noemi
author_facet Pose, Graciela Noemi
Patriarca, Andrea Rosana
Kyanko, María V.
Pardo, Alejandro Guillermo
Fernández Pinto, Virginia
author_role author
author2 Patriarca, Andrea Rosana
Kyanko, María V.
Pardo, Alejandro Guillermo
Fernández Pinto, Virginia
author2_role author
author
author
author
dc.subject.none.fl_str_mv Alternaria Alternata
Water Activity
Temperature
Tomato
topic Alternaria Alternata
Water Activity
Temperature
Tomato
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Alternaria alternata is a toxigenic fungus, predominantly responsible for Blackmould of ripe tomato fruits, a disease frequently causing substantial losses of tomatoes, especially those used for canning. The objective of this study was to determine the effect of water activity (aw, 0.904, 0.922, 0.954, 0.982) and temperature (6, 15, 21 and 35 °C) on germination and radial growth rate on a synthetic tomato medium of a cocktail inoculum of five strains of A. alternata isolated from tomato fruits affected by Blackmould. The shortest germination time (1.5 days) was observed at 0.982 aw, both at 21 °C and 35 °C. The germination time increased with a reduction on aw. The fastest growth rate was registered at 0.982 aw and 21 °C (8.31 mm/day). Growth rates were higher when aw increased. No growth or germination was observed at the lowest aw level evaluated (0.904) after 100 days of incubation at 6 °C and 15 °C. A temperature of 6 °C caused a significant reduction in growth rates, even at the optimum aw level. The knowledge on the ecophysiology of the fungus in this substrate is necessary to elaborate future strategies to prevent its development and evaluate the consumer health risk.
Fil: Pose, Graciela Noemi. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología. Laboratorio de Micología Molecular; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Patriarca, Andrea Rosana. 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: Kyanko, María V.. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología. Laboratorio de Micología Molecular; Argentina
Fil: Pardo, Alejandro Guillermo. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología. Laboratorio de Micología Molecular; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Fernández Pinto, Virginia. 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 Alternaria alternata is a toxigenic fungus, predominantly responsible for Blackmould of ripe tomato fruits, a disease frequently causing substantial losses of tomatoes, especially those used for canning. The objective of this study was to determine the effect of water activity (aw, 0.904, 0.922, 0.954, 0.982) and temperature (6, 15, 21 and 35 °C) on germination and radial growth rate on a synthetic tomato medium of a cocktail inoculum of five strains of A. alternata isolated from tomato fruits affected by Blackmould. The shortest germination time (1.5 days) was observed at 0.982 aw, both at 21 °C and 35 °C. The germination time increased with a reduction on aw. The fastest growth rate was registered at 0.982 aw and 21 °C (8.31 mm/day). Growth rates were higher when aw increased. No growth or germination was observed at the lowest aw level evaluated (0.904) after 100 days of incubation at 6 °C and 15 °C. A temperature of 6 °C caused a significant reduction in growth rates, even at the optimum aw level. The knowledge on the ecophysiology of the fungus in this substrate is necessary to elaborate future strategies to prevent its development and evaluate the consumer health risk.
publishDate 2009
dc.date.none.fl_str_mv 2009-07-24
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/11336/26924
Pose, Graciela Noemi; Patriarca, Andrea Rosana; Kyanko, María V.; Pardo, Alejandro Guillermo; Fernández Pinto, Virginia; Effect of water activity and temperature on growth of Alternaria alternata on a synthetic tomato medium; Elsevier Science; International Journal of Food Microbiology; 135; 1; 24-7-2009; 60-63
0168-1605
1879-3460
CONICET Digital
CONICET
url http://hdl.handle.net/11336/26924
identifier_str_mv Pose, Graciela Noemi; Patriarca, Andrea Rosana; Kyanko, María V.; Pardo, Alejandro Guillermo; Fernández Pinto, Virginia; Effect of water activity and temperature on growth of Alternaria alternata on a synthetic tomato medium; Elsevier Science; International Journal of Food Microbiology; 135; 1; 24-7-2009; 60-63
0168-1605
1879-3460
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0168160509003651
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.ijfoodmicro.2009.07.018
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
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
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_ 1846083473945657344
score 13.22299

Publicaciones similares