http://www.cnr.it/ontology/cnr/individuo/prodotto/ID182443
Phenotypic traits underlying wound competence of postharvest biocontrol yeasts and degradation of mycotoxins by these microorganisms (Abstract in rivista)
- Type
- Label
- Phenotypic traits underlying wound competence of postharvest biocontrol yeasts and degradation of mycotoxins by these microorganisms (Abstract in rivista) (literal)
- Anno
- 2004-01-01T00:00:00+01:00 (literal)
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- Castoria R. 1; Caputo L. 2; Morena V. 1; De Curtis F. 1; DE CICCO V. 1 (literal)
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- Rivista
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- Elad Y.; Pertot I.; Enkegaard A.; (literal)
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- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
- Note
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- 1: Dipartimento di Scienze Animali, Vegetali e dell'Ambiente, Università del Molise, Campobasso
2: Istituto di Scienze delle Produzioni Alimentari (literal)
- Titolo
- Phenotypic traits underlying wound competence of postharvest biocontrol yeasts and degradation of mycotoxins by these microorganisms (literal)
- Abstract
- We had previously shown that wound competence of postharvest biocontrol agents (BCAs)
acting against wound pathogens of apples relies on resistance of these microorganisms to
reactive oxygen species (ROS: superoxide anion, O2-
and hydrogen peroxide, H2O2),
generated by the fruit tissue as a consequence of wounding. In this work we report the in vitro
comparison of the enzyme activities deactivating ROS (superoxide dismutase, SOD and
catalase, CAT) and the antioxidant potential of culture filtrates of two biocontrol yeast strains
displaying lower (Rhodothorula glutinis LS11) and higher (Cryptococcus laurentii LS28)
wound competence and antagonistic activity. The more efficient antagonist LS28 showed
significantly higher SOD and CAT activities and higher antioxidant potential of its culture
filtrate. Recently, the EU has released regulations (472/2002 and 1425/2003) setting the
highest tolerable levels of the mycotoxins Patulin and Ochratoxin A (OTA), which
contaminate apple-based food products and wine, as a consequence of infections by
Penicillium expansum and Aspergillus carbonarius on apples and grape, respectively. Two
biocontrol agents of our collection (strain LS11 and Aureobasidium pullulans LS30) are able
to degrade in vitro Patulin and OTA, respectively. Further, strain LS11 shows active reduction
of Patulin also in vivo, i.e. in apples artificially infected by P. expansum. (literal)
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