Phenotyping for quantitative resistance to Septoria tritici blotch (STB), one of the most economically devastating diseases durum wheat (Triticum Desf.) in North African region, is a limiting factor breeding progress. Here we tested main phenotypic markers aggressiveness affecting host damage and pathogen reproduction reported earlier studies measuring differences resistance. A collection 11 Tu...

A forward genetics approach was applied in order to investigate the molecular basis of morphological transition in the wheat pathogenic fungus Zymoseptoria tritici. Z. tritici is a dimorphic plant pathogen displaying environmentally regulated morphogenetic transition between yeast-like and hyphal growth. Considering the infection mode of Z. tritici, the switching to hyphal growth is essential f...

Septoria tritici blotch (STB), caused by the fungus Zymoseptoria tritici, is a major constraint in global wheat production. The lack of genetic diversity modern elite cultivars largely hinders improvement STB resistance. Wheat landraces are reservoirs untapped diversity, which can be exploited to find novel resistance genes or alleles. Here, we characterized 188 Swiss for using four Z. isolates...

The fungal wheat pathogen Zymoseptoria tritici possesses a large complement of accessory chromosomes showing presence/absence polymorphism among isolates. These chromosomes encode hundreds of genes; however, their functional role and why the chromosomes have been maintained over long evolutionary times are so far not known. In this study, we addressed the functional relevance of eight accessory...

Septoria tritici blotch (STB), caused by the fungus Zymoseptoria tritici, is a major constraint in global wheat production. The lack of genetic diversity modern elite cultivars largely hinders improvement STB resistance. Wheat landraces are reservoirs untapped diversity, which can be exploited to find novel resistance genes or alleles. Here, we characterized 188 Swiss for using four Z. isolates...

The latent period is a crucial life history trait, particularly for polycyclic plant diseases, because it determines how many complete monocycles could theoretically occur during an epidemic. Many studies have focused on the variation of latent period with pathogen or host genotype, or its plasticity in response to environmental factors. The focus on these aspects is unsurprising, as these fact...

Zymoseptoria tritici is an important fungal pathogen on wheat that originated in the Fertile Crescent. Its closely related sister species Z. pseudotritici and Z. ardabiliae infect wild grasses in the same region. This recently emerged host-pathogen system provides a rare opportunity to investigate the evolutionary processes shaping the genome of an emerging pathogen. Here, we investigate geneti...

The phyllosphere is an important habitat for a diverse microbiome and an important entry point for many pathogens. Factors that shape the phyllosphere microbiome and also the co-existence among members and how they affect disease development are largely understudied. In this study we examined the wheat mycobiome by using metabarcoding of the fungal ITS1 region. Leaf samples were taken from four...