Effect of solute and matric potential on in vitro growth and sporulation of strains from a new population of Aspergillus flavus isolated in Italy.

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dc.contributor.authorGiorni, Paola
dc.contributor.authorBattilani, Paola
dc.contributor.authorMagan, Naresh
dc.date.accessioned2009-02-11T16:34:48Z
dc.date.available2009-02-11T16:34:48Z
dc.date.issued2008-05
dc.description.abstractThe effect of temperature and different solute (Ψs) and matric potentials (Ψm) on growth and sporulation of three aflatoxigenic strains of Aspergillus flavus isolated from contaminated maize in northern Italy was determined. The Ψs of maize-based media were modified ionically (NaCl) and non-ionically (glycerol) and the Ψm with PEG 8000 in the range −1.4 to −21.0 MPa at 25 and 30 °C. Both temperature and Ψs/Ψm stress had statistically significant effects on growth rates of the three strains. Faster growth occurred at 30 °C and −1.4 and −2.8 MPa. A. flavus strains were more sensitive to Ψm than Ψs stress with limits of −9.8 MPa and −14 to−18 MPa, respectively. Sporulation was significantly influenced by Ψs potential, solute type and temperature. This suggests that these aflatoxigenic strains of A. flavus isolated from aflatoxin-contaminated maize are probably able to colonise crop debris rapidly at prevailing temperatures and water stress conditions. This type of information on the ecology of aflatoxin producing A. flavus strains isolated in Italy will contribute to the development of a systems model to predict their activity in crop residue and colonisation of maize grain.en_UK
dc.identifier.citationPaola Giorni, Paola Battilani, Naresh Magan, Effect of solute and matric potential on in vitro growth and sporulation of strains from a new population of Aspergillus flavus isolated in Italy, Fungal Ecology, Volume 1, Issues 2-3, May-August 2008, Pages 102-106en_UK
dc.identifier.issn1754-5048
dc.identifier.urihttp://dx.doi.org/10.1016/j.funeco.2008.07.001
dc.identifier.urihttp://hdl.handle.net/1826/3164
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.subjectAspergillus flavusen_UK
dc.subjectFungal growthen_UK
dc.subjectSporulationen_UK
dc.subjectTemperatureen_UK
dc.subjectWater potentialen_UK
dc.titleEffect of solute and matric potential on in vitro growth and sporulation of strains from a new population of Aspergillus flavus isolated in Italy.en_UK
dc.typePostprinten_UK

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