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...
| Authors: | ; ; |
|---|---|
| Format: | Article |
| Status: | Published version |
| Publication date: | 2015 |
| Country: | Argentina |
| Institution: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repository: | CONICET Digital (CONICET) |
| Language: | English |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/24018 |
| Online Access: | http://hdl.handle.net/11336/24018 |
| Access Level: | Open access |
| Keyword: | Alternaria Arborescens Alternariol Alternariol Monomethyl Ether Tenuazonic Acid Aal Toxins Environmental Parameters https://purl.org/becyt/ford/2.11 https://purl.org/becyt/ford/2 |
| _version_ | 1878403794124931073 |
|---|---|
| author | Vaquera, Sandra Lucrecia |
| author2 | Patriarca, Andrea Rosana Fernández Pinto, Virginia |
| author2_role | author author |
| author_browse | Fernández Pinto, Virginia Patriarca, Andrea Rosana Vaquera, Sandra Lucrecia |
| author_facet | Vaquera, Sandra Lucrecia Patriarca, Andrea Rosana Fernández Pinto, Virginia |
| author_role | author |
| collection | CONICET Digital (CONICET) |
| 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 40 days 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. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | AR_c1949f2defc3f00f43ecc2d11087db0f |
| identifier_str_mv | Vaquera, Sandra Lucrecia; Patriarca, Andrea Rosana; Fernández Pinto, Virginia; Influence of environmental parameters on mycotoxin production by Alternaria arborescens; Elsevier Science; International Journal of Food Microbiology; 219; 12-12-2015; 44-49 0168-1605 1879-3460 CONICET Digital CONICET |
| institution | Consejo Nacional de Investigaciones Científicas y Técnicas |
| instname_str | Consejo Nacional de Investigaciones Científicas y Técnicas |
| language | eng |
| network_acronym_str | AR |
| network_name_str | Argentina |
| oai_identifier_str | oai:ri.conicet.gov.ar:11336/24018 |
| publishDate | 2015 |
| publishDateSort | 2015 |
| publisher | Elsevier Science |
| publisherStr | Elsevier Science |
| reponame_str | CONICET Digital (CONICET) |
| spelling | Influence of environmental parameters on mycotoxin production by Alternaria arborescens Vaquera, Sandra Lucrecia Patriarca, Andrea Rosana Fernández Pinto, Virginia Alternaria Arborescens Alternariol Alternariol Monomethyl Ether Tenuazonic Acid Aal Toxins Environmental Parameters https://purl.org/becyt/ford/2.11 https://purl.org/becyt/ford/2 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 40 days 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. Fil: Vaquera, Sandra Lucrecia. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Orgánica; 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: Fernández Pinto, Virginia. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Orgánica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Elsevier Science http://hdl.handle.net/11336/24018 Vaquera, Sandra Lucrecia; Patriarca, Andrea Rosana; Fernández Pinto, Virginia; Influence of environmental parameters on mycotoxin production by Alternaria arborescens; Elsevier Science; International Journal of Food Microbiology; 219; 12-12-2015; 44-49 0168-1605 1879-3460 CONICET Digital CONICET |
| spellingShingle | Influence of environmental parameters on mycotoxin production by Alternaria arborescens Vaquera, Sandra Lucrecia Alternaria Arborescens Alternariol Alternariol Monomethyl Ether Tenuazonic Acid Aal Toxins Environmental Parameters https://purl.org/becyt/ford/2.11 https://purl.org/becyt/ford/2 |
| status_str | publishedVersion |
| title | 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_short | Influence of environmental parameters on mycotoxin production by Alternaria arborescens |
| title_sort | Influence of environmental parameters on mycotoxin production by Alternaria arborescens |
| topic | Alternaria Arborescens Alternariol Alternariol Monomethyl Ether Tenuazonic Acid Aal Toxins Environmental Parameters https://purl.org/becyt/ford/2.11 https://purl.org/becyt/ford/2 |
| topic_facet | Alternaria Arborescens Alternariol Alternariol Monomethyl Ether Tenuazonic Acid Aal Toxins Environmental Parameters https://purl.org/becyt/ford/2.11 https://purl.org/becyt/ford/2 |
| url | http://hdl.handle.net/11336/24018 |