Temperature and water activity influence on simultaneous production of AAL toxins by Alternaria arborescens on tomato medium

Alternaria spp. have been reported to be the most frequent phytopathogenic fungi invading tomatoes. Certain species are capable of producing several mycotoxins in infected plants and in agricultural commodities. AAL toxins are produced by Alternaria arborescens, which is the causal agent of tomato s...

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Autores principales: Vaquera, S., Patriarca, A., Cabrera, G., Fernández Pinto, V.
Formato: JOUR
Materias:
AAL toxins
Alternaria arborescens
Temperature
Tomato
Water activity
fruit
fungal disease
fungus
pathogen
pathogenicity
temperature effect
toxin
Alternaria
Fungi
Lycopersicon esculentum
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_09291873_v148_n4_p1003_Vaquera
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_09291873_v148_n4_p1003_Vaquera2023-10-03T15:47:33Z Temperature and water activity influence on simultaneous production of AAL toxins by Alternaria arborescens on tomato medium Vaquera, S. Patriarca, A. Cabrera, G. Fernández Pinto, V. AAL toxins Alternaria arborescens Temperature Tomato Water activity fruit fungal disease fungus pathogen pathogenicity temperature effect toxin Alternaria Alternaria arborescens Fungi Lycopersicon esculentum Alternaria spp. have been reported to be the most frequent phytopathogenic fungi invading tomatoes. Certain species are capable of producing several mycotoxins in infected plants and in agricultural commodities. AAL toxins are produced by Alternaria arborescens, which is the causal agent of tomato stem canker, and one of the species involved in the tomato black mold. AAL toxins include five congeners, TA, TB, TC, TD and TE, structurally similar. The objective of this study was to determine the effect of water activity (aw, 0.995, and 0.950) and temperature (6, 15, 20, 25 and 30 °C) on simultaneous AAL toxins production by Alternaria arborescens. The maximum accumulation of AAL toxins occurred at 0.995 aw after 40 days of incubation at 30 °C. None of the toxins was detected at temperatures below 30 °C at any aw during the whole incubation period. The results obtained here could be extrapolated to evaluate the risk of toxin accumulation in tomato fruit and tomato products. © 2017, Koninklijke Nederlandse Planteziektenkundige Vereniging. Fil:Patriarca, A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Cabrera, G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_09291873_v148_n4_p1003_Vaquera
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic AAL toxins
Alternaria arborescens
Temperature
Tomato
Water activity
fruit
fungal disease
fungus
pathogen
pathogenicity
temperature effect
toxin
Alternaria
Alternaria arborescens
Fungi
Lycopersicon esculentum
spellingShingle AAL toxins
Alternaria arborescens
Temperature
Tomato
Water activity
fruit
fungal disease
fungus
pathogen
pathogenicity
temperature effect
toxin
Alternaria
Alternaria arborescens
Fungi
Lycopersicon esculentum
Vaquera, S.
Patriarca, A.
Cabrera, G.
Fernández Pinto, V.
Temperature and water activity influence on simultaneous production of AAL toxins by Alternaria arborescens on tomato medium
topic_facet AAL toxins
Alternaria arborescens
Temperature
Tomato
Water activity
fruit
fungal disease
fungus
pathogen
pathogenicity
temperature effect
toxin
Alternaria
Alternaria arborescens
Fungi
Lycopersicon esculentum
description Alternaria spp. have been reported to be the most frequent phytopathogenic fungi invading tomatoes. Certain species are capable of producing several mycotoxins in infected plants and in agricultural commodities. AAL toxins are produced by Alternaria arborescens, which is the causal agent of tomato stem canker, and one of the species involved in the tomato black mold. AAL toxins include five congeners, TA, TB, TC, TD and TE, structurally similar. The objective of this study was to determine the effect of water activity (aw, 0.995, and 0.950) and temperature (6, 15, 20, 25 and 30 °C) on simultaneous AAL toxins production by Alternaria arborescens. The maximum accumulation of AAL toxins occurred at 0.995 aw after 40 days of incubation at 30 °C. None of the toxins was detected at temperatures below 30 °C at any aw during the whole incubation period. The results obtained here could be extrapolated to evaluate the risk of toxin accumulation in tomato fruit and tomato products. © 2017, Koninklijke Nederlandse Planteziektenkundige Vereniging.
format JOUR
author Vaquera, S.
Patriarca, A.
Cabrera, G.
Fernández Pinto, V.
author_facet Vaquera, S.
Patriarca, A.
Cabrera, G.
Fernández Pinto, V.
author_sort Vaquera, S.
title Temperature and water activity influence on simultaneous production of AAL toxins by Alternaria arborescens on tomato medium
title_short Temperature and water activity influence on simultaneous production of AAL toxins by Alternaria arborescens on tomato medium
title_full Temperature and water activity influence on simultaneous production of AAL toxins by Alternaria arborescens on tomato medium
title_fullStr Temperature and water activity influence on simultaneous production of AAL toxins by Alternaria arborescens on tomato medium
title_full_unstemmed Temperature and water activity influence on simultaneous production of AAL toxins by Alternaria arborescens on tomato medium
title_sort temperature and water activity influence on simultaneous production of aal toxins by alternaria arborescens on tomato medium
url http://hdl.handle.net/20.500.12110/paper_09291873_v148_n4_p1003_Vaquera
work_keys_str_mv AT vaqueras temperatureandwateractivityinfluenceonsimultaneousproductionofaaltoxinsbyalternariaarborescensontomatomedium
AT patriarcaa temperatureandwateractivityinfluenceonsimultaneousproductionofaaltoxinsbyalternariaarborescensontomatomedium
AT cabrerag temperatureandwateractivityinfluenceonsimultaneousproductionofaaltoxinsbyalternariaarborescensontomatomedium
AT fernandezpintov temperatureandwateractivityinfluenceonsimultaneousproductionofaaltoxinsbyalternariaarborescensontomatomedium
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