Multiple methods for varietal resistance assessment of durum wheat cultivars against Fusarium culmorum the causal agent of Fusarium head blight and crown rot in Algeria

Bouanaka, Hamza; Bellil, Ines; Khelifi, Douadi

doi:10.1016/j.pmpp.2021.101683

Cited by 6 publications

(2 citation statements)

References 36 publications

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“…One important example is that of the Mediterranean basin, where durum wheat (DW), one of the most relevant commodities, is extensively cultivated. In Mediterranean environments, alongside Fusarium crown rot, more typical of semi-arid cropping areas [ 9 , 10 ], the occurrence of FHB is increasingly reported [ 11 , 12 , 13 ]. FHB epidemics are also major concerns for DW cultivated in wetter and cooler areas, as in Canada and in Central-Western Europe [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

Untargeted Metabolomics Reveals a Multi-Faceted Resistance Response to Fusarium Head Blight Mediated by the Thinopyrum elongatum Fhb7E Locus Transferred via Chromosome Engineering into Wheat

Fanelli

Kuzmanović

Giovenali

et al. 2023

Cells

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The Thinopyrum elongatum Fhb7E locus has been proven to confer outstanding resistance to Fusarium Head Blight (FHB) when transferred into wheat, minimizing yield loss and mycotoxin accumulation in grains. Despite their biological relevance and breeding implications, the molecular mechanisms underlying the resistant phenotype associated with Fhb7E have not been fully uncovered. To gain a broader understanding of processes involved in this complex plant–pathogen interaction, we analysed via untargeted metabolomics durum wheat (DW) rachises and grains upon spike inoculation with Fusarium graminearum (Fg) and water. The employment of DW near-isogenic recombinant lines carrying or lacking the Th. elongatum chromosome 7E region including Fhb7E on their 7AL arm, allowed clear-cut distinction between differentially accumulated disease-related metabolites. Besides confirming the rachis as key site of the main metabolic shift in plant response to FHB, and the upregulation of defence pathways (aromatic amino acid, phenylpropanoid, terpenoid) leading to antioxidants and lignin accumulation, novel insights were revealed. Fhb7E conferred constitutive and early-induced defence response, in which specific importance of polyamine biosynthesis, glutathione and vitamin B6 metabolisms, along with presence of multiple routes for deoxynivalenol detoxification, was highlighted. The results suggested Fhb7E to correspond to a compound locus, triggering a multi-faceted plant response to Fg, effectively limiting Fg growth and mycotoxin production.

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Section: Introductionmentioning

confidence: 99%

Untargeted Metabolomics Reveals a Multi-Faceted Resistance Response to Fusarium Head Blight Mediated by the Thinopyrum elongatum Fhb7E Locus Transferred via Chromosome Engineering into Wheat

Fanelli

Kuzmanović

Giovenali

et al. 2023

Cells

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show abstract

“…Efforts are currently focused on gene discovery and the development of new cultivars with improved resistance to FCR in wheat, but no wheat varieties are fully resistant [6,7]. Therefore, different defense and/or control strategies for this disease, involving the use of both agrochemicals and biocontrol microorganisms (biostimulants), have been assessed in durum wheat [8,9].…”

Section: Introductionmentioning

confidence: 99%

Seed Coating with Trichoderma harzianum T-22 of Italian Durum Wheat Increases Protection against Fusarium culmorum-Induced Crown Rot

et al. 2022

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Changes in root organization and colonization could be relevant for wheat’s (Triticum durum Desf.) response to F. culmorum-induced crown rot disease (FCR). We investigated the biocontrol and biostimulant efficiency of seeds coated with T. harzianum T-22 (T-22) of four tetraploid wheat seedlings (ancient Saragolle Lucana and modern Creso, Simeto, and Ciclope). In an in vitro experiment, T-22 repressed F. culmorum mycelium growth by over 50% due to the probable combination of competition for nutrients, mycoparasitism, and antibiosis. The seed germination rate was not significantly affected by T-22 while the F. culmorum-induced decrease in emergence was attenuated in the presence of T-22. Ultimately, an improvement in growth was observed by comparing treated and control seedlings at 21 days after sowing. Inoculation with T-22 resulted in Saragolle Lucana seedlings being 4.69 cm higher while Ciclope and Simeto had main roots that were 9.96 and 8.13 cm longer than the control, respectively. Treated and infected Simeto seedlings were 3.75 cm higher and had roots that were 14.45 cm longer than the control, with little contemporary dense coiling colonization by T-22, like Saragolle Lucana. Seed coating induced the best performance regarding seedling growth and the ability to control the pathogen in Simeto (disease severity reduction rate (DDR) of 20%). The pathogenicity of F. culmorum was reduced in all four durum wheats, although it was highly susceptible to FCR. Ciclope, studied for the first time, showed a decrease in disease incidence from 100 ± 0.00% to 56.67 ± 9.13% and a 30% DDR. The seed coating influenced the seedlings’ response to FCR due to T-22’s different colonization actions. This study provides new explanations for the diverse responses of ancient and modern tetraploid wheat to F. culmorum mediated by T-22 inoculation via seed coating.

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First report on Fusarium cerealis , identification and virulence as causal agents of crown rot on wheat in Algeria

Bouanaka

Bellil

Khelifi

2022

Archives of Phytopathology and Plant Protection

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Multiple methods for varietal resistance assessment of durum wheat cultivars against Fusarium culmorum the causal agent of Fusarium head blight and crown rot in Algeria

Cited by 6 publications

References 36 publications

Untargeted Metabolomics Reveals a Multi-Faceted Resistance Response to Fusarium Head Blight Mediated by the Thinopyrum elongatum Fhb7E Locus Transferred via Chromosome Engineering into Wheat

Untargeted Metabolomics Reveals a Multi-Faceted Resistance Response to Fusarium Head Blight Mediated by the Thinopyrum elongatum Fhb7E Locus Transferred via Chromosome Engineering into Wheat

Seed Coating with Trichoderma harzianum T-22 of Italian Durum Wheat Increases Protection against Fusarium culmorum-Induced Crown Rot

First report on Fusarium cerealis , identification and virulence as causal agents of crown rot on wheat in Algeria

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