Toxigenic Alternaria species from Argentinean blueberries

Blueberries are traditionally consumed in North America, some European countries and Japan. In Argentina, the blueberry crop is profitable because production starts in November, when the northern hemisphere lacks fresh fruit. Fungal contaminants can grow and produce mycotoxins in fresh fruit. The ai...

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Autor principal:	Patriarca, Andrea Rosana
Publicado:	2012
Materias:	Alternaria Alternariol Alternariol methylether Blueberries Tenuazonic acid alternariol alternariol methylether mycotoxin tenuazonic acid unclassified drug Alternaria alternata Alternaria arborescens Alternaria tenuissima Argentina article autoclave blueberry controlled study fungal virulence fungus fungus isolation host range nonhuman Penicillium phoma rice sporogenesis Blueberry Plant Food Storage Mycotoxins Mycota Phoma Vaccinium
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01681605_v154_n3_p187_Greco http://hdl.handle.net/20.500.12110/paper_01681605_v154_n3_p187_Greco
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_01681605_v154_n3_p187_Greco
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spelling	paper:paper_01681605_v154_n3_p187_Greco2023-06-08T15:17:19Z Toxigenic Alternaria species from Argentinean blueberries Patriarca, Andrea Rosana Alternaria Alternariol Alternariol methylether Blueberries Tenuazonic acid alternariol alternariol methylether mycotoxin tenuazonic acid unclassified drug Alternaria Alternaria alternata Alternaria arborescens Alternaria tenuissima Argentina article autoclave blueberry controlled study fungal virulence fungus fungus isolation host range nonhuman Penicillium phoma rice sporogenesis Alternaria Argentina Blueberry Plant Food Storage Mycotoxins Alternaria Alternaria alternata Alternaria arborescens Alternaria tenuissima Mycota Penicillium Phoma Vaccinium Blueberries are traditionally consumed in North America, some European countries and Japan. In Argentina, the blueberry crop is profitable because production starts in November, when the northern hemisphere lacks fresh fruit. Fungal contaminants can grow and produce mycotoxins in fresh fruit. The aims of this work were to identify the main genera of the mycobiota of blueberries grown in Argentina and to determine the toxicogenic potential, pathogenicity and host specificity of the species isolated. The genus Alternaria was the main component of the blueberry mycobiota (95%); minor proportions of Phoma spp. (4%) and Penicillium spp. (1%) were also isolated. According to their sporulation patterns, 127 Alternaria isolates belonged to the Alternaria tenuissima species-group, 5 to the Alternaria alternata species-group and 2 to the Alternaria arborescens species-group. The last mentioned species-group was not isolated at 5. °C. Of the 134 isolates, 61% were toxicogenic in autoclaved rice; 97% of these produced alternariol (AOH) in a range from 0.14 to 119.18. mg/kg, 95% produced alternariol methylether (AME) in a range from 1.23 to 901.74. mg/kg and 65% produced tenuazonic acid (TA) in a range from 0.13 to 2778. mg/kg. Fifty two isolates co-produced the three mycotoxins. According to the size of the lesion that they caused on blueberries, the isolates were classified as slightly pathogenic, moderately pathogenic and very pathogenic. No significant differences in pathogenicity were found on different blueberry varieties.In this work, high incidence and toxicogenic potential of the Alternaria isolates from blueberries were demonstrated. Thus, more studies should be done to evaluate the health risk posed by the presence of the Alternaria toxins in blueberries and in the manufactured by-products. © 2012 Elsevier B.V. Fil:Patriarca, A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2012 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01681605_v154_n3_p187_Greco http://hdl.handle.net/20.500.12110/paper_01681605_v154_n3_p187_Greco
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Alternaria Alternariol Alternariol methylether Blueberries Tenuazonic acid alternariol alternariol methylether mycotoxin tenuazonic acid unclassified drug Alternaria Alternaria alternata Alternaria arborescens Alternaria tenuissima Argentina article autoclave blueberry controlled study fungal virulence fungus fungus isolation host range nonhuman Penicillium phoma rice sporogenesis Alternaria Argentina Blueberry Plant Food Storage Mycotoxins Alternaria Alternaria alternata Alternaria arborescens Alternaria tenuissima Mycota Penicillium Phoma Vaccinium
spellingShingle	Alternaria Alternariol Alternariol methylether Blueberries Tenuazonic acid alternariol alternariol methylether mycotoxin tenuazonic acid unclassified drug Alternaria Alternaria alternata Alternaria arborescens Alternaria tenuissima Argentina article autoclave blueberry controlled study fungal virulence fungus fungus isolation host range nonhuman Penicillium phoma rice sporogenesis Alternaria Argentina Blueberry Plant Food Storage Mycotoxins Alternaria Alternaria alternata Alternaria arborescens Alternaria tenuissima Mycota Penicillium Phoma Vaccinium Patriarca, Andrea Rosana Toxigenic Alternaria species from Argentinean blueberries
topic_facet	Alternaria Alternariol Alternariol methylether Blueberries Tenuazonic acid alternariol alternariol methylether mycotoxin tenuazonic acid unclassified drug Alternaria Alternaria alternata Alternaria arborescens Alternaria tenuissima Argentina article autoclave blueberry controlled study fungal virulence fungus fungus isolation host range nonhuman Penicillium phoma rice sporogenesis Alternaria Argentina Blueberry Plant Food Storage Mycotoxins Alternaria Alternaria alternata Alternaria arborescens Alternaria tenuissima Mycota Penicillium Phoma Vaccinium
description	Blueberries are traditionally consumed in North America, some European countries and Japan. In Argentina, the blueberry crop is profitable because production starts in November, when the northern hemisphere lacks fresh fruit. Fungal contaminants can grow and produce mycotoxins in fresh fruit. The aims of this work were to identify the main genera of the mycobiota of blueberries grown in Argentina and to determine the toxicogenic potential, pathogenicity and host specificity of the species isolated. The genus Alternaria was the main component of the blueberry mycobiota (95%); minor proportions of Phoma spp. (4%) and Penicillium spp. (1%) were also isolated. According to their sporulation patterns, 127 Alternaria isolates belonged to the Alternaria tenuissima species-group, 5 to the Alternaria alternata species-group and 2 to the Alternaria arborescens species-group. The last mentioned species-group was not isolated at 5. °C. Of the 134 isolates, 61% were toxicogenic in autoclaved rice; 97% of these produced alternariol (AOH) in a range from 0.14 to 119.18. mg/kg, 95% produced alternariol methylether (AME) in a range from 1.23 to 901.74. mg/kg and 65% produced tenuazonic acid (TA) in a range from 0.13 to 2778. mg/kg. Fifty two isolates co-produced the three mycotoxins. According to the size of the lesion that they caused on blueberries, the isolates were classified as slightly pathogenic, moderately pathogenic and very pathogenic. No significant differences in pathogenicity were found on different blueberry varieties.In this work, high incidence and toxicogenic potential of the Alternaria isolates from blueberries were demonstrated. Thus, more studies should be done to evaluate the health risk posed by the presence of the Alternaria toxins in blueberries and in the manufactured by-products. © 2012 Elsevier B.V.
author	Patriarca, Andrea Rosana
author_facet	Patriarca, Andrea Rosana
author_sort	Patriarca, Andrea Rosana
title	Toxigenic Alternaria species from Argentinean blueberries
title_short	Toxigenic Alternaria species from Argentinean blueberries
title_full	Toxigenic Alternaria species from Argentinean blueberries
title_fullStr	Toxigenic Alternaria species from Argentinean blueberries
title_full_unstemmed	Toxigenic Alternaria species from Argentinean blueberries
title_sort	toxigenic alternaria species from argentinean blueberries
publishDate	2012
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01681605_v154_n3_p187_Greco http://hdl.handle.net/20.500.12110/paper_01681605_v154_n3_p187_Greco
work_keys_str_mv	AT patriarcaandrearosana toxigenicalternariaspeciesfromargentineanblueberries
_version_	1768544682166452224

Toxigenic Alternaria species from Argentinean blueberries

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