2012
DOI: 10.1094/phyto-06-11-0162
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Within-Field Variation of Fusarium graminearum Isolates for Aggressiveness and Deoxynivalenol Production in Wheat Head Blight

Abstract: Fusarium head blight (FHB), caused by Fusarium graminearum sensu stricto (s.s.), causes tremendous annual yield losses in wheat worldwide. Variation of aggressiveness of isolates from individual field populations in terms of FHB infection and deoxynivalenol (DON) concentration in the host are important population parameters reflecting parasitic ability. Our main objective was to estimate the variation of both traits within three populations of F. graminearum s.s., each consisting of 30 single-spore isolates co… Show more

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Cited by 26 publications
(22 citation statements)
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“…We observed a high correlation between DON production and aggressiveness ( r  = 0.67, p  < 0.001, Fig. 1), which is consistent with a previous study using 42  F. culmorum isolates [72] and F. graminearum [71]. Even if the correlation cannot conclude causality of DON in aggressiveness [72], this evidence confirms an important role of DON in aggressiveness.…”
Section: Discussionsupporting
confidence: 90%
See 1 more Smart Citation
“…We observed a high correlation between DON production and aggressiveness ( r  = 0.67, p  < 0.001, Fig. 1), which is consistent with a previous study using 42  F. culmorum isolates [72] and F. graminearum [71]. Even if the correlation cannot conclude causality of DON in aggressiveness [72], this evidence confirms an important role of DON in aggressiveness.…”
Section: Discussionsupporting
confidence: 90%
“…Quantitative variation within natural field populations has previously only been reported for a few plant pathogens like Rhynchosporium commune [67], Zymoseptoria tritici [68–70] and the close relative of Fusarium culmorum , F. graminearum [71]. To our knowledge, this is the first study reporting variability in aggressiveness and DON production within F. culmorum isolates from natural field populations.…”
Section: Discussionmentioning
confidence: 93%
“…Phenotypic data were analyzed in detail in a companion study [9]. All 77 F. graminearum s.s. isolates produced symptoms of FHB disease in all environments.…”
Section: Resultsmentioning
confidence: 99%
“…To compare FHB reactions, the arithmetic means of four ratings were used and assigned as mean FHB rating throughout the paper. All plots were harvested by hand, threshed, and the grain analyzed to quantify the amount of DON by a commercially available immunotest (R-biopharm AG, Darmstadt, Germany) as previously described in detail [9]. This test cannot differentiate between DON and 3-ADON, so the results include both mycotoxins.…”
Section: Methodsmentioning
confidence: 99%
“…The complex interactions between F. graminearum and its cereal hosts involve several genetic factors from both partners, the outcomes being quantitative resistances by cereals (Buerstmayr et al 2009) and aggressiveness - defined herein as the quantitative variation of the pathogenicity - by F. graminearum (Gilbert, Abramson, McCallum, et al , 2002; Talas et al , 2012; Fabre et al , 2019). This interaction is dynamic, and emergence of more aggressive F. graminearum populations has been observed in the fields (Ward et al , 2008; Foroud et al , 2012; Kelly and Ward, 2018).…”
Section: Introductionmentioning
confidence: 99%