Determination of mycotoxin profiles characteristic of<i>Alternaria</i>strains isolated from Malbec grapes

Trinidad, Andrea Vargas; Ganoza, Fernando Quevedo; Pinto, Virginia Fernández; Patriarca, Andrea

doi:10.1051/bioconf/20150502004

Cited by 6 publications

(3 citation statements)

References 43 publications

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“…Fungal contamination of grapes could occur before or during harvest and processing. In addition, Alternaria alternata strains isolated from Malbec wine grape have demonstrated the in vitro ability to produce alternariol (AOH), alternariol monomethyl ether (AME) and tenuazonic acid (TA) in synthetic media (Prendes et al 2015;Trinidad et al 2015). Also, the natural occurrence of some of these mycotoxins in wine grapes, grape juices and wine has already been reported Broggi et al 2013;Pizzutti et al 2014;Fan et al 2016;Fontana et al 2016;L opez et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Water activity and temperature effects on growth and mycotoxin production byAlternaria alternatastrains isolated from Malbec wine grapes

et al. 2017

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Section: Introductionmentioning

confidence: 99%

Water activity and temperature effects on growth and mycotoxin production byAlternaria alternatastrains isolated from Malbec wine grapes

et al. 2017

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“…The exposure to Alternaria toxins has been linked to a great variety of adverse effects to both human and animal health (Dall'Asta et al, 2014). There are not specific international regulations of Alternaria toxins in food (Trinidad et al, 2015). Without surface disinfection, a total of 388 strains belonging to 12 genera were identified during the years 2017 and 2018, while Alternaria colonised all the samples examined (Table 3).…”

Section: Resultsmentioning

confidence: 99%

Microfungi of Grapes From Small Carpathian Region in Slovakia

Felšöciová¹,

Kačániová²

2019

JMBFS

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The incidence of filamentous fungi and toxin levels in grapes and wines varies depending on the variety of grapes, the wine region, agricultural practices, weather conditions, the harvest and the winemaking process (Freire et al., 2017). The mycobiota frequently isolated from grapes includes the genera Aspergillus, Penicillium, Mucor, Rhizopus, Alternaria, Cladosporium, Botrytis and Fusarium (Trinidad et al., 2015). Penicillium is a diverse fungal genus of ascomycetous fungi and contains more than 350 species (Visagie et al., 2014) playing various roles in natural ecosystems, agriculture, and biotechnology. Species of Penicillium are ubiquitous soil fungi, preferring cool and moderate climates commonly present in organic materials. Most of the species are saprophytes and live mainly on organic biodegradable substances (Kirk et al., 2008). Penicilli have a large economic impact on human life. They have two sidesa good and beneficial one and a bad and economically destructive one. Many species of Penicillium are of proven importance because of their widespread occurrence and ability to produce a wide range of bioactive metabolites, including antibacterial, antifungal, immune suppressants, cholesterol-lowering agents etc. (Petit et al., 2009). Some species produce toxins and may render food inedible or even dangerous (Visagie et al., 2013). Penicillum expansum can cause rot in grapes, but does not usually attack grapes before harvest. Aside from losses in fruit, this species is regarded as the major producer of patulin, although this species produces many other toxic metabolites such as citrinin, roquefortine C or chaetoglobosins among others (Andersen et al., 2004). Mycotoxins are secondary metabolities produced by filamentous fungi either preor postharvest and which can contaminate agricultural food and feed products and have detrimental effects on human and animal health. Much of the research on mycotoxins, including recent research on the effects of climate change on mycotoxins, has focused on Aspergillus, Fusarium, and Penicillium species, as they are the major mycotoxin-producing fungi in field crops and stored products in the world (Paris et al., 2015). The most important mycotoxin in wine is ochratoxin A (OTA) (Amézqueta et al., 2009; Varga and Kozakiewicz, 2006). The role of OTA producing penicillia in contaminating wine is of interest, although isolation from grapes is considered infrequent. However, Mikušová et al. (2010) isolated OTA-producing P. verrucosum from Slovakian grapes. Rousseaux et al. (2014) reported OTAproducing Penicillium species from grapes in northern Italy and France, suggesting they could be involved in OTA contamination. The production of OTA from Chinese penicillia (Zhang et al., 2016) requires confirmation (Perrone et al., 2017). In general, isolating OTA fungi from grapes should not exclude penicillia. The aim of our study was to monitor the mycobiota of grapes and determine the characteristic mycotoxin production profiles of Penicillium strains (patulin, citrinin, and roquefortin ...

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“…Alternaria alternata (Fr. Keissler) has frequently been isolated from leaves in the vineyard and grapes in pre and postharvest samples (Trinidad et al 2015, Kassemeyer 2017.…”

Section: Introductionmentioning

confidence: 99%

Antifungal activity of essential oil from Eucalyptus staigeriana against Alternaria alternata causing of leaf spot and black rot in table grapes

Pedrotti¹,

Franzoi²,

Rosa³

et al. 2022

An. Acad. Bras. Ciênc.

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Alternaria alternata causes leaf spot and black rot diseases in leaves and grapes of grapevines, respectively, and leads to huge economic losses in table grapes production. As natural antifungal agents, essential oils (EOs), which are generally recognized as safe substances, shows strong antifungal activity against fungal phytopathogens. The aim of this study was to determine the chemical composition of Eucalyptus staigeriana EO and its in vitro and in vivo effects against A. alternata. The major compounds of E. staigeriana EO were citral (34.32%, of which 21.83% geranial and 12.49% neral), limonene (20.60%) and 1,8-cineole (12.33%). E. staigeriana EO exhibited the highest inhibitory activity on mycelial growth and conidial germination at 1 µL mL -1 . Moreover, the EO was able to reduce the incidence and severity of leaf spot disease in leaves and black rot disease in table grapes caused by A. alternata. These results represent a possible alternative to reduce the use of synthetic molecules for the control of diseases in postharvest of table grapes and in vineyard.

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Determination of mycotoxin profiles characteristic ofAlternariastrains isolated from Malbec grapes

Cited by 6 publications

References 43 publications

Water activity and temperature effects on growth and mycotoxin production byAlternaria alternatastrains isolated from Malbec wine grapes

Water activity and temperature effects on growth and mycotoxin production byAlternaria alternatastrains isolated from Malbec wine grapes

Microfungi of Grapes From Small Carpathian Region in Slovakia

Antifungal activity of essential oil from Eucalyptus staigeriana against Alternaria alternata causing of leaf spot and black rot in table grapes

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