Influence of environmental parameters on mycotoxin production by Alternaria arborescens

Alternaria arborescens has been reported as a common fungal species invading tomatoes and is capable of producing several mycotoxins in infected plants, fruits and in agricultural commodities. Alternariol (AOH), alternariol monomethyl ether (AME), and tenuazonic acid (TeA) are some of the main Alter...

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Autor principal:	Patriarca, Andrea Rosana
Publicado:	2016
Materias:	AAL toxins, Alternaria arborescens, Alternariol monomethyl ether, Alternariol, Environmental parameters Tenuazonic acid, alternariol alternariol monomethyl ether ether mycotoxin sphingolipid tenuazonic acid unclassified drug water lactone Alternaria Alternaria alternata Alternaria arborescens Article environmental factor environmental parameters fungal contamination fungal strain lipogenesis nonhuman temperature tomato biosynthesis chemistry food contamination food control fruit metabolism microbiology pathogenicity Food Contamination Food Microbiology Fruit Lactones Lycopersicon esculentum Mycotoxins Sphingolipids Temperature Tenuazonic Acid Water
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01681605_v219_n_p44_Vaquera http://hdl.handle.net/20.500.12110/paper_01681605_v219_n_p44_Vaquera
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_01681605_v219_n_p44_Vaquera
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spelling	paper:paper_01681605_v219_n_p44_Vaquera2023-06-08T15:17:21Z Influence of environmental parameters on mycotoxin production by Alternaria arborescens Patriarca, Andrea Rosana AAL toxins, Alternaria arborescens, Alternariol monomethyl ether, Alternariol, Environmental parameters Tenuazonic acid, alternariol alternariol monomethyl ether ether mycotoxin sphingolipid tenuazonic acid unclassified drug water alternariol alternariol monomethyl ether lactone mycotoxin tenuazonic acid Alternaria Alternaria alternata Alternaria arborescens Article environmental factor environmental parameters fungal contamination fungal strain lipogenesis nonhuman temperature tomato Alternaria biosynthesis chemistry food contamination food control fruit metabolism microbiology pathogenicity temperature Alternaria Food Contamination Food Microbiology Fruit Lactones Lycopersicon esculentum Mycotoxins Sphingolipids Temperature Tenuazonic Acid Water Alternaria arborescens has been reported as a common fungal species invading tomatoes and is capable of producing several mycotoxins in infected plants, fruits and in agricultural commodities. Alternariol (AOH), alternariol monomethyl ether (AME), and tenuazonic acid (TeA) are some of the main Alternaria mycotoxins that can be found as contaminants of food. This species can produce these toxic metabolites together with AAL toxins (Alternaria alternata f. sp. lycopersicum toxins), which can act as inhibitors of sphingolipid biosynthesis. The objective of this study was to determine the effect of water activity (aw, 0.995, 0.975, 0.950) and temperature (6, 15, 20, 25 and 30°C) on mycotoxin production by A. arborescens on a synthetic tomato medium. The optimum production of AOH and AME occurred at 0.975 aw after 40days of incubation at 30°C. The maximum TeA accumulation was observed at 0.975 aw and 25°C and at 0.950 aw and 30°C. AAL TA was produced in higher quantities at 0.995 aw and 30°C. At 6°C no quantifiable levels of AOH or AME were detected, but significant amounts of TeA were produced at 0.975 aw. In general, high aw levels and high temperatures were favorable for mycotoxin production. The greatest accumulation of all four toxins occurred at 0.975 aw and 30°C. The results obtained here could be extrapolated to evaluate the risk of tomato fruits and tomato products contamination caused by these toxins. © 2015 Elsevier B.V. Fil:Patriarca, A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2016 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01681605_v219_n_p44_Vaquera http://hdl.handle.net/20.500.12110/paper_01681605_v219_n_p44_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, Alternariol monomethyl ether, Alternariol, Environmental parameters Tenuazonic acid, alternariol alternariol monomethyl ether ether mycotoxin sphingolipid tenuazonic acid unclassified drug water alternariol alternariol monomethyl ether lactone mycotoxin tenuazonic acid Alternaria Alternaria alternata Alternaria arborescens Article environmental factor environmental parameters fungal contamination fungal strain lipogenesis nonhuman temperature tomato Alternaria biosynthesis chemistry food contamination food control fruit metabolism microbiology pathogenicity temperature Alternaria Food Contamination Food Microbiology Fruit Lactones Lycopersicon esculentum Mycotoxins Sphingolipids Temperature Tenuazonic Acid Water
spellingShingle	AAL toxins, Alternaria arborescens, Alternariol monomethyl ether, Alternariol, Environmental parameters Tenuazonic acid, alternariol alternariol monomethyl ether ether mycotoxin sphingolipid tenuazonic acid unclassified drug water alternariol alternariol monomethyl ether lactone mycotoxin tenuazonic acid Alternaria Alternaria alternata Alternaria arborescens Article environmental factor environmental parameters fungal contamination fungal strain lipogenesis nonhuman temperature tomato Alternaria biosynthesis chemistry food contamination food control fruit metabolism microbiology pathogenicity temperature Alternaria Food Contamination Food Microbiology Fruit Lactones Lycopersicon esculentum Mycotoxins Sphingolipids Temperature Tenuazonic Acid Water Patriarca, Andrea Rosana Influence of environmental parameters on mycotoxin production by Alternaria arborescens
topic_facet	AAL toxins, Alternaria arborescens, Alternariol monomethyl ether, Alternariol, Environmental parameters Tenuazonic acid, alternariol alternariol monomethyl ether ether mycotoxin sphingolipid tenuazonic acid unclassified drug water alternariol alternariol monomethyl ether lactone mycotoxin tenuazonic acid Alternaria Alternaria alternata Alternaria arborescens Article environmental factor environmental parameters fungal contamination fungal strain lipogenesis nonhuman temperature tomato Alternaria biosynthesis chemistry food contamination food control fruit metabolism microbiology pathogenicity temperature Alternaria Food Contamination Food Microbiology Fruit Lactones Lycopersicon esculentum Mycotoxins Sphingolipids Temperature Tenuazonic Acid Water
description	Alternaria arborescens has been reported as a common fungal species invading tomatoes and is capable of producing several mycotoxins in infected plants, fruits and in agricultural commodities. Alternariol (AOH), alternariol monomethyl ether (AME), and tenuazonic acid (TeA) are some of the main Alternaria mycotoxins that can be found as contaminants of food. This species can produce these toxic metabolites together with AAL toxins (Alternaria alternata f. sp. lycopersicum toxins), which can act as inhibitors of sphingolipid biosynthesis. The objective of this study was to determine the effect of water activity (aw, 0.995, 0.975, 0.950) and temperature (6, 15, 20, 25 and 30°C) on mycotoxin production by A. arborescens on a synthetic tomato medium. The optimum production of AOH and AME occurred at 0.975 aw after 40days of incubation at 30°C. The maximum TeA accumulation was observed at 0.975 aw and 25°C and at 0.950 aw and 30°C. AAL TA was produced in higher quantities at 0.995 aw and 30°C. At 6°C no quantifiable levels of AOH or AME were detected, but significant amounts of TeA were produced at 0.975 aw. In general, high aw levels and high temperatures were favorable for mycotoxin production. The greatest accumulation of all four toxins occurred at 0.975 aw and 30°C. The results obtained here could be extrapolated to evaluate the risk of tomato fruits and tomato products contamination caused by these toxins. © 2015 Elsevier B.V.
author	Patriarca, Andrea Rosana
author_facet	Patriarca, Andrea Rosana
author_sort	Patriarca, Andrea Rosana
title	Influence of environmental parameters on mycotoxin production by Alternaria arborescens
title_short	Influence of environmental parameters on mycotoxin production by Alternaria arborescens
title_full	Influence of environmental parameters on mycotoxin production by Alternaria arborescens
title_fullStr	Influence of environmental parameters on mycotoxin production by Alternaria arborescens
title_full_unstemmed	Influence of environmental parameters on mycotoxin production by Alternaria arborescens
title_sort	influence of environmental parameters on mycotoxin production by alternaria arborescens
publishDate	2016
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01681605_v219_n_p44_Vaquera http://hdl.handle.net/20.500.12110/paper_01681605_v219_n_p44_Vaquera
work_keys_str_mv	AT patriarcaandrearosana influenceofenvironmentalparametersonmycotoxinproductionbyalternariaarborescens
_version_	1768545414707937280

Influence of environmental parameters on mycotoxin production by Alternaria arborescens

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