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Subject Item

n3:439403

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schema:CreativeWork bibo:Document

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Picot <i>et al.</i> (2011)

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taxref:taxref-ld

schema:datePublished

2011-01-01

dct:title

Picot <i>et al.</i> (2011)

foaf:page

n8:x

schema:identifier

_:vb70018502

dct:abstract

<jats:p>Fungal interactions of <jats:italic>Fusarium verticillioides</jats:italic> and <jats:italic>F. graminearum</jats:italic> in maize ears and the impact on fungal development and toxin accumulation were investigated in a 2‐year field study at two locations in France. Maize ears were inoculated either with a spore mixture of <jats:italic>F. graminearum</jats:italic> and <jats:italic>F. verticillioides</jats:italic> or using a sequential inoculation procedure consisting of a first inoculation with <jats:italic>F. graminearum</jats:italic> followed by a second with <jats:italic>F. verticillioides</jats:italic> 1 week later. Toxin and fungal biomass were assessed on mature kernels, using HPLC and quantitative PCR. Correlation between the levels of DNA and toxin was high concerning <jats:italic>F. graminearum</jats:italic> DNA and deoxynivalenol (<jats:italic>R</jats:italic>² = 0·73) and moderate for <jats:italic>F. verticillioides</jats:italic> DNA and fumonisin (<jats:italic>R</jats:italic>²<jats:bold> </jats:bold>= 0·44). <jats:italic>Fusarium graminearum</jats:italic> DNA either decreased in mixed inoculations or was not influenced by subsequent inoculations with <jats:italic>F. verticillioides</jats:italic>, compared to single inoculations. In contrast, <jats:italic>F. verticillioides</jats:italic> DNA either significantly increased or was not affected in mixed and sequential inoculations. In two of the replicates, it can be assumed that natural contamination by <jats:italic>F. verticillioides</jats:italic> was favoured by previous contamination with <jats:italic>F. graminearum</jats:italic>. Overall, the results suggest that <jats:italic>F. verticillioides</jats:italic> has competitive advantages over the <jats:italic>F. graminearum</jats:italic> strains. Additionally, the data provide, for the first time, key evidence that previous contamination by <jats:italic>F. graminearum</jats:italic> in maize ears can facilitate subsequent infections by <jats:italic>F. verticillioides</jats:italic>.</jats:p>

bibo:abstract

<jats:p>Fungal interactions of <jats:italic>Fusarium verticillioides</jats:italic> and <jats:italic>F. graminearum</jats:italic> in maize ears and the impact on fungal development and toxin accumulation were investigated in a 2‐year field study at two locations in France. Maize ears were inoculated either with a spore mixture of <jats:italic>F. graminearum</jats:italic> and <jats:italic>F. verticillioides</jats:italic> or using a sequential inoculation procedure consisting of a first inoculation with <jats:italic>F. graminearum</jats:italic> followed by a second with <jats:italic>F. verticillioides</jats:italic> 1 week later. Toxin and fungal biomass were assessed on mature kernels, using HPLC and quantitative PCR. Correlation between the levels of DNA and toxin was high concerning <jats:italic>F. graminearum</jats:italic> DNA and deoxynivalenol (<jats:italic>R</jats:italic>² = 0·73) and moderate for <jats:italic>F. verticillioides</jats:italic> DNA and fumonisin (<jats:italic>R</jats:italic>²<jats:bold> </jats:bold>= 0·44). <jats:italic>Fusarium graminearum</jats:italic> DNA either decreased in mixed inoculations or was not influenced by subsequent inoculations with <jats:italic>F. verticillioides</jats:italic>, compared to single inoculations. In contrast, <jats:italic>F. verticillioides</jats:italic> DNA either significantly increased or was not affected in mixed and sequential inoculations. In two of the replicates, it can be assumed that natural contamination by <jats:italic>F. verticillioides</jats:italic> was favoured by previous contamination with <jats:italic>F. graminearum</jats:italic>. Overall, the results suggest that <jats:italic>F. verticillioides</jats:italic> has competitive advantages over the <jats:italic>F. graminearum</jats:italic> strains. Additionally, the data provide, for the first time, key evidence that previous contamination by <jats:italic>F. graminearum</jats:italic> in maize ears can facilitate subsequent infections by <jats:italic>F. verticillioides</jats:italic>.</jats:p>

dct:issued

2011-01-01

dct:bibliographicCitation

Picot, A., Hourcade‐Marcolla, D., Barreau, C., Pinson‐Gadais, L., Caron, D., Richard‐Forget, F. &amp; Lannou, C. 2011. Interactions between <em>Fusarium verticillioides</em> and <em>Fusarium graminearum</em> in maize ears and consequences for fungal development and mycotoxin accumulation. <em>Plant Pathology</em>, 61(1): 140-151.

bibo:doi

10.1111/j.1365-3059.2011.02503.x

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n8:x

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_:vb70018502

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n10:P356

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10.1111/j.1365-3059.2011.02503.x