Search results for " Penicillium"
showing 3 items of 3 documents
Cloning and expression of genes involved in conidiation and surface properties of Penicillium camemberti grown in liquid and solid cultures.
2008
International audience; Based on bioinformatic data on model fungi, the rodA and wetA genes encoding, respectively, a RodA hydrophobin protein and the WetA protein involved in conidiation mechanisms, were PCR-cloned and characterized for the first time in Penicillium camemberti. These results, completed by a sequence of the brlA gene (available in GenBank), which encodes a major transcriptional regulator also involved in the conidiation mechanism, were used to compare, by qRT-PCR, the expression of the three genes in liquid and solid cultures in a synthetic medium. While expression of the brlA and wetA genes increased dramatically in both culture conditions after 4 days of growth, expressio…
Studio delle popolazioni di aspergilli e penicilli in uve della sicilia occidentale
2008
In diversi vigneti della Sicilia occidentale è stata monitorata, su uve sane e infestate, la dinamica di presenza di specie di Aspergillus e Penicillium, alcune delle quali note produttrici di ocratossina A, la principale micotossina della filiera vitivinicola. Gli studi condotti dall’allegagione alla raccolta evidenziano la variabilità quali-quantitativa delle popolazioni di aspergilli e penicilli, in relazione alle condizioni ambientali. Le analisi tossicologiche, accertando la presenza occasionale della micotossina, confermano l’assenza di correlazione tra il livelli di OTA nelle uve e la presenza dei funghi in vigneto.
Fungal Contaminants and Mycotoxins in Nuts
2021
Contamination by fungi and mycotoxins in nuts has achieved much attention in recent years. In fact, the fungal metabolites produced by the species of Aspergillus, Penicillium (aflatoxins and ochratoxins), Fusarium (trichothecenes, zearalenones and fumonisins) and Alternaria (alternariotoxins) with toxic and/or carcinogenic effects are considered a threat to human and animal health. In this chapter we will discuss the main fungal taxa and related mycotoxins most frequently associated with these materials. In this regard, the first results on the level of contamination by fungi and mycotoxins in samples of almonds and pistachios of different origins will be reported. The main strategies to re…