Unbalanced Roles of Fungal Aggressiveness and Host Cultivars in the Establishment of the Fusarium Head Blight in Bread Wheat

Fabre, Francis; Bormann, Joerg; Urbach, Serge; Roche, Sylvie; Langin, Thierry; Bonhomme, Ludovic

doi:10.3389/fmicb.2019.02857

Cited by 23 publications

(49 citation statements)

References 84 publications

(108 reference statements)

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“…The extracellular peptidases produced by F. graminearum during the infection of wheat and barley are highly similar (r 2 = 0.87), whereas the comparison of in planta vs. in vitro conditions demonstrates weak association (r 2 = 0.22), indicating host-induced pathways (Lowe et al 2015). Fusarium graminearum strains of varying aggressiveness express the same genetic programmes and show similar effector protein profiles in wheat infections, but more aggressive strains accumulate these substances with higher abundance (Fabre et al 2019), thus, aggressiveness is not determined by specific effectors, but rather by their general rate of production. The pathogen carries numerous pathogenicity factors that can be employed under various circumstances.…”

Section: Fusarium Species Causing Fhb In Wheat and Barleymentioning

confidence: 99%

Building on a foundation: advances in epidemiology, resistance breeding, and forecasting research for reducing the impact of fusarium head blight in wheat and barley

Fernando

Oghenekaro

Tucker

et al. 2021

Canadian Journal of Plant Pathology

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Section: Fusarium Species Causing Fhb In Wheat and Barleymentioning

confidence: 99%

Building on a foundation: advances in epidemiology, resistance breeding, and forecasting research for reducing the impact of fusarium head blight in wheat and barley

Fernando

Oghenekaro

Tucker

et al. 2021

Canadian Journal of Plant Pathology

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“…This study further demonstrated that putative effectors could be already accumulated in spores or synthesized within hours, and extensive co-variations were evidenced between abundance changes of effectors and the regulation of plant chloroplast proteins, especially at the beginning of grain cellularization. In addition, strong links were evidenced between the abundance of candidate effectors and strain aggressiveness (Fabre et al, 2019a), emphasizing that increased knowledge of the fungal component could lead to a better understanding of the processes involved in host susceptibility.…”

Section: Predicted Effector Searches Reveal An Increasingly Complex Amentioning

confidence: 99%

Searching for FHB Resistances in Bread Wheat: Susceptibility at the Crossroad

et al. 2020

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Fusarium head blight (FHB), primarily caused by Fusarium graminearum, is one of the most devastating fungal wheat diseases. During the past decades, many efforts have been deployed to dissect FHB resistance, investigating both the wheat responses to infection and, more recently, the fungal determinants of pathogenicity. Although no total resistance has been identified so far, they demonstrated that some plant functions and the expression of specific genes are needed to promote FHB. Associated with the increasing list of F. graminearum effectors able to divert plant molecular processes, this fact strongly argues for a functional link between susceptibility-related factors and the fate of this disease in wheat. In this review, we gather more recent data concerning the involvement of plant and fungal genes and the functions and mechanisms in the development of FHB susceptibility, and we discuss the possibility to use them to diversify the current sources of FHB resistance.

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“…Apogee for the functional validation of FgVeA gene. Plants were grown under greenhouse, as previously described (Fabre et al , 2019). Plant duplicates were conducted per progeny strain according to the protocol described above.…”

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%

“…Some TCTB are considered to be aggressiveness factors since their nature and quantities produced has been associated to symptoms severity variation (Bai et al , 2002; Cumagun, 2004; Foroud et al , 2012). But this relationship is not always straightforward, and some correlation is not always observed (Gilbert et al , 2002; Maier et al , 2006; Fabre et al , 2019). In addition to toxin biosynthetic gene clusters, gapless whole-genome sequencing of the four chromosomes of the species associated with extensive genome-mining efforts have highlighted a large repertoire of genes that could be involved in pathogenicity (Cuomo et al , 2007; Brown et al , 2012; Sieber et al , 2014; King et al , 2015).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

QTL mapping for aggressiveness variation inF. graminearumrevealed one causal mutation in FgVe1 velvet protein

Laurent

Moinard

Spataro

et al. 2020

Preprint

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Fusarium graminearum is one of the most frequent causal agents of the Fusarium Head Blight in the world, a cereal disease spread throughout the world, reducing grain production and quality. F. graminearum isolates are genetically and phenotypically highly diverse. Notably, remarkable variations of aggressiveness between isolates have been observed, which could reflect an adaptive potential of this pathogen. In this study, we aimed to characterize the genetic basis of aggressiveness variation observed in an F1 population, for which genome sequences of both parental strains are available. Aggressiveness was assessed by a panel of in planta and in vitro proxies during two phenotyping trials including, among others, disease severity and mycotoxin accumulation in wheat spike. One major and single QTL was mapped for all the traits measured, on chromosome I, that explained up to 90% of the variance for disease severity. The confidence interval at the QTL spanned 1.2 Mb and contained 428 genes on the reference genome. Of these, four candidates were selected based on the postulate that a non-synonymous mutation affecting protein function may be responsible for phenotypic differences. Finally, a mutation was identified and functionally validated in the gene FgVe1, coding for a velvet protein known to be involved in pathogenicity and secondary metabolism production in several fungi.

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Unbalanced Roles of Fungal Aggressiveness and Host Cultivars in the Establishment of the Fusarium Head Blight in Bread Wheat

Cited by 23 publications

References 84 publications

Building on a foundation: advances in epidemiology, resistance breeding, and forecasting research for reducing the impact of fusarium head blight in wheat and barley

Building on a foundation: advances in epidemiology, resistance breeding, and forecasting research for reducing the impact of fusarium head blight in wheat and barley

Searching for FHB Resistances in Bread Wheat: Susceptibility at the Crossroad

QTL mapping for aggressiveness variation inF. graminearumrevealed one causal mutation in FgVe1 velvet protein

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