Simultaneous detection and identification of trichothecene- and moniliformin-producing Fusarium species based on multiplex SNP analysis.
OBJECTIVE
To develop a multiplex identification method for trichothecene- and moniliformin-producing Fusarium species.


RESULTS
In this article, we present a single nucleotide polymorphism (SNP) assay to simultaneously detect and identify 16 trichothecene- and moniliformin-producing Fusarium species. A number of SNP primers are designed to detect clades of species with particular mycotoxigenic synthetic abilities. The assay is based on minisequencing using SNaPshot reactions and the SNP primers are designed based on motifs derived from phylogenetic analyses of translation elongation factor-1alpha sequences. The present version of the Fusarium SNP assay can distinguish major groups of trichothecene producers; the strict-type-A, the strict-type-B, the type-A and type-B trichothecene producers and the putative moniliformin producers. The SNP assay was validated against five naturally infected cereal samples that previously had been analysed morphologically, chemically and by a multiplex DNA array hybridization.


CONCLUSIONS
The Fusarium SNP assay reveals the advantages of using SNPs for multiplex species identification.


CONCLUSIONS
The current assay may qualify as a high-throughput screening method for small-grain cereals in the feed and food chain, and may facilitate detection of new or introduced Fusarium species.
Kristensen
R
R
Section of Feed and Food Microbiology, National Veterinary Institute, Oslo, Norway.
Berdal
K G
KG
Holst-Jensen
A
A
D003503:Cyclobutanes / Q000378:metabolism*; D004271:DNA, Fungal / Q000032:analysis* / Q000235:genetics; D002523:Edible Grain / Q000382:microbiology; D005670:Fusarium / Q000145:classification* / Q000235:genetics / Q000472:pathogenicity; D009183:Mycotoxins / Q000032:analysis* / Q000378:metabolism; D010802:Phylogeny; D020641:Polymorphism, Single Nucleotide / Q000235:genetics*; D014255:Trichothecenes / Q000032:analysis* / Q000378:metabolism
D003503:Cyclobutanes; D004271:DNA, Fungal; D009183:Mycotoxins; D014255:Trichothecenes; C008539:moniliformin