Abstract

Fusarium verticillioides and Fusarium proliferatum are the mainsource of fumonisins, a group of mycotoxins that can contaminate maize-based food and feed and cause diseases in humans and animals.We analyzed the effect of temperature (15-35°C), water activity(aw: 0.999-0.93), salinity (0-125 g/l NaCl), pH (5-8) and light ofdifferent wavelength (650-390 nm) on the growth, the productionof fumonisins B (FB) and the expression of FUM1 and FUM21. ForF. verticillioides the highest growth rate was measured at 25°C, awof 0.998-0.99, 0-25 g/l of NaCl and white light. Optimal conditionsfor fumonisin production were 30°C, aw of 0.99, 25 g/l of NaCl,pH 5, red and blue light. For Fusarium proliferatum the highestgrowth rate was measured at 25°C, aw of 0.99 and 0-25 g/l of NaCl,pH 7 and green light. Optimal conditions for fumonisin productionwere 25°C, aw of 0.998, 0 g/l of NaCl, pH 6, red and bluelight. F. verticillioides showed a better adaptability compared toF. proliferatum and was able to produce moderate levels of fumonisinsunder a wide range of conditions. FUM gene expression notalways mirrored FB production, indicating a post-transcriptionalmechanism regulationg fumonisin production. The study of theeffect of different environmental conditions on toxin productionshould provide information that can be used to develop strategiesto minimize the risk.

Autore Pugliese

• Mule' Giuseppina , Logrieco Antonio Francesco , Haidukowski Edith Miriam , Fanelli Francesca

Tutti gli autori

• Fanelli F.; Haidukowski M.; Logrieco A.F.; Mulè G.

Titolo volume/Rivista

Journal of plant pathology

Anno di pubblicazione

2013

ISSN

1125-4653

ISBN

Non Disponibile

Numero di citazioni Wos

Nessuna citazione

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Numero di citazioni Scopus

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Ultimo Aggiornamento Citazioni

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Settori ERC

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Codici ASJC

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