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Review
. 2020 Jun 11:11:731.
doi: 10.3389/fpls.2020.00731. eCollection 2020.

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

Francis Fabre  1 , Florian Rocher  1 , Tarek Alouane  1 , Thierry Langin  1 , Ludovic Bonhomme  1
Affiliations
Review

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

Francis Fabre et al. Front Plant Sci. .

Abstract

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.

Keywords: Fusarium graminearum; S genes; Triticum aestivum; fungal effectors; new resistance sources; scab; susceptibility factors.

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Figures

FIGURE 1
FIGURE 1
Circos plot of the wheat genome (Triticum aestivum) exemplifying Fusarium head blight susceptibility determinants. The three-component genome is represented as a circle including the A, B, and D genomes and their respective chromosomes. The pink areas refer to the deleted chromosome arms in the ditelosomic lines (Ma et al., 2006), the green and blue zones refer to the deleted genomic regions, and the red lines indicate the gene position.
See this image and copyright information in PMC

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