EFS12- Book of abstracts - Contact
EFS12- Book of abstracts - Contact
EFS12- Book of abstracts - Contact
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SESSION 3: PATHOGENESIS – EPIDEMIOLOGY AND POPULATION<br />
GENETICS<br />
P68 - Population analysis <strong>of</strong> Fusarium graminearum<br />
sensu stricto from wheat and maize in the United<br />
Kingdom<br />
R. Basler 1,2 , S. Edwards 1 , J. Thomas 2<br />
1 National Institute <strong>of</strong> Agricultural Botany, Huntingdon Road, Cambridge, CB3 0LE, United Kingdom;<br />
2 Harper Adams University, Newport, TF10 8NB, United Kingdom<br />
E-mail: ryan.basler@niab.com<br />
Fusarium graminearum sensu stricto (s.s) is a diverse toxigenic species that<br />
contaminates wheat and maize in variable climates. In the United Kingdom wheat<br />
is the major arable land crop, 1,969,000 hectares annually, and maize is an<br />
emerging crop with an increase <strong>of</strong> 20% over six years to 146,000 ha. Maize in<br />
the UK is primarily intended for silage and improved cultivars and changes in the<br />
climate have contributed to increases in UK maize production. The diversity <strong>of</strong><br />
Fusarium species and their associated mycotoxins was determined in UK maize<br />
with a survey <strong>of</strong> kernel and stalk samples in 2011 and 2012 from fifteen sites.<br />
The predominant species isolated were F. culmorum (45%) and F. graminearum<br />
s.s. (44%) in addition 12 other Fusarium species were identified at lower<br />
frequencies. To compare the genetic architecture in F. graminearum s.s. in UK<br />
maize and wheat eighty-two samples <strong>of</strong> UK wheat kernels were screened for F.<br />
graminearum s.s. in 2012. The species diversity and toxigenicity between maize<br />
and wheat are being analysed with mini-, variable number tandem repeats, and<br />
micro-satellite markers. Presently the molecular phenotyping <strong>of</strong> the isolates<br />
indicates regional characteristics associated with nivalenol producing isolates <strong>of</strong><br />
maize F. graminearum s.s. to be in the south and south eastern maize growing<br />
regions <strong>of</strong> the UK.<br />
Keywords: Fusarium graminearum, nivalenol<br />
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