Genetic relationships between resistances to Fusarium head blight and crown rot in bread wheat (Triticum aestivum L.)

2010 ◽  
Vol 121 (5) ◽  
pp. 941-950 ◽  
Author(s):  
Hao Bing Li ◽  
Guo Qiang Xie ◽  
Jun Ma ◽  
Gui Ru Liu ◽  
Shu Min Wen ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Fusarium Head Blight ◽  
Bread Wheat ◽  
Genetic Relationships ◽  
Triticum Aestivum L ◽  
Crown Rot ◽  
Head Blight

Fine mapping Fhb1, a major gene controlling fusarium head blight resistance in bread wheat (Triticum aestivum L.)

2006 ◽  
Vol 112 (8) ◽  
pp. 1465-1472 ◽  
Author(s):  
Patricia A. Cuthbert ◽  
Daryl J. Somers ◽  
Julian Thomas ◽  
Sylvie Cloutier ◽  
Anita Brulé-Babel
Keyword(s):  
Triticum Aestivum ◽  
Fusarium Head Blight ◽  
Bread Wheat ◽  
Fine Mapping ◽  
Major Gene ◽  
Fusarium Head Blight Resistance ◽  
Triticum Aestivum L ◽  
Blight Resistance ◽  
Head Blight

scholarly journals Deoxynivalenol Detoxification in Transgenic Wheat Confers Resistance to Fusarium Head Blight and Crown Rot Diseases

2019 ◽  
Vol 32 (5) ◽  
pp. 583-592 ◽  
Author(s):  
Giulia Mandalà ◽  
Silvio Tundo ◽  
Sara Francesconi ◽  
Federica Gevi ◽  
Lello Zolla ◽  
...  
Keyword(s):  
Transgenic Plants ◽  
Durum Wheat ◽  
Fusarium Head Blight ◽  
Bread Wheat ◽  
Virulence Factor ◽  
Fusarium Species ◽  
Crown Rot ◽  
Uridine Diphosphate ◽  
Head Blight ◽  
Principal Mechanism

Fusarium diseases, including Fusarium head blight (FHB) and Fusarium crown rot (FCR), reduce crop yield and grain quality and are major agricultural problems worldwide. These diseases also affect food safety through fungal production of hazardous mycotoxins. Among these, deoxynivalenol (DON) acts as a virulence factor during pathogenesis on wheat. The principal mechanism underlying plant tolerance to DON is glycosylation by specific uridine diphosphate–dependent glucosyltransferases (UGTs), through which DON-3-β-d-glucoside (D3G) is produced. In this work, we tested whether DON detoxification by UGT could confer to wheat a broad-spectrum resistance against Fusarium graminearum and F. culmorum. These widespread Fusarium species affect different plant organs and developmental stages in the course of FHB and FCR. To assess DON-detoxification potential, we produced transgenic durum wheat plants constitutively expressing the barley HvUGT13248 and bread wheat plants expressing the same transgene in flower tissues. When challenged with F. graminearum, FHB symptoms were reduced in both types of transgenic plants, particularly during early to mid-infection stages of the infection progress. The transgenic durum wheat displayed much greater DON-to-D3G conversion ability and a considerable decrease of total DON+D3G content in flour extracts. The transgenic bread wheat exhibited a UGT dose–dependent efficacy of DON detoxification. In addition, we showed, for the first time, that DON detoxification limits FCR caused by F. culmorum. FCR symptoms were reduced throughout the experiment by nearly 50% in seedlings of transgenic plants constitutively expressing HvUGT13248. Our results demonstrate that limiting the effect of the virulence factor DON via in planta glycosylation restrains FHB and FCR development. Therefore, ability for DON detoxification can be a trait of interest for wheat breeding targeting FHB and FCR resistance.

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