Stagonospora nodorum: cause of stagonospora nodorum blotch of wheat.

  title={Stagonospora nodorum: cause of stagonospora nodorum blotch of wheat.},
  author={Peter S. Solomon and Rohan G T Lowe and Kar-Chun Tan and Ormonde D. C. Waters and Richard P. Oliver},
  journal={Molecular plant pathology},
  volume={7 3},
UNLABELLED SUMMARY Stagonospora nodorum is an important pathogen of wheat and related cereals, causing both a leaf and glume blotch. This review summarizes recent advances in our understanding of taxonomy, control and pathogenicity of this species. TAXONOMY Stagonospora (syn. Septoria) nodorum (Berk.) Castell. and Germano [teleomorph: Phaeosphaeria (syn. Leptosphaeria) nodorum (Müll.) Hedjar.], kingdom Fungi, phylum Ascomycota, subphylum Euascomycota, class Dothideomycetes, order Pleosporales… 

Genes Conferring Sensitivity to Stagonospora nodorum Necrotrophic Effectors in SNB-susceptible Wheat Cultivars in the Southeastern United States.

The goal of this study was to identify genes in a genetically diverse set of SNB-susceptible southeastern U.S. wheat lines that confer sensitivity to Stagonospora nodorum Necrotrophic Effectors, and to identify which sensitivity genes were most common in these cultivars.

Sizing up Septoria

The phylogenetic generic limits of Septoria, Stagonospora, and other related genera such as Sphaerulina, Phaeosphaeria and Phaeoseptoria are resolved using sequences of the partial 28S nuclear ribosomal RNA and RPB2 genes of a large set of isolates, leading to the introduction of 14 new genera, 36 new species, and 19 new combinations.

Novel necrotrophic effectors from Stagonospora nodorum and corresponding host sensitivities in winter wheat germplasm in the southeastern United States.

It is suggested that NE sensitivities influence but may not be the only determinant of cultivar resistance to S. nodorum, and specific knowledge of NE and Snn gene frequencies in this region can be used by wheat breeding programs to improve SNB resistance.

Genes Conferring Sensitivity to Stagonospora nodorum Necrotrophic Effectors in Stagonospora Nodorum Blotch-Susceptible U.S. Wheat Cultivars.

Determination of NE sensitivity among 25 winter wheat cultivars that are susceptible to SNB, as well as the moderately resistant 'NC-Neuse', illuminating which NE sensitivity genes may be of concern in breeding for resistance toSNB in the southeastern United States.

A Review of the Interactions between Wheat and Wheat Pathogens: Zymoseptoria tritici, Fusarium spp. and Parastagonospora nodorum

The Clustered Regularly-Interspaced Short Palindromic Repeats/ CRISPR associated (CRISPR/Cas) system can be used to introduce targeted mutations into the wheat genome and confer resistance to selected fungal diseases.

Polyketide synthesis in Stagonospora nodorum

A highly conserved alternative melanisation pathway gene cluster involving the putative DHN-melanin synthase MEL1, aPutative oxidoreductase and a putative transcription factor has been identified, indicating a menial role for these genes during pathogenesis.

A Secondary Metabolite Secreted by Penicillium citrinum Is Able to Enhance Parastagonospora nodorum Sensitivity to Tebuconazole and Azoxystrobin

6-DMM is suggested as a putative component for formulations with triazole and strobilurin fungicides to improve fungicide efficacy and, potentially, lower rates of fungicides needed for plant pathogen control.

Prevalence and importance of sensitivity to Stagonospora nodorum necrotrophic effector SnTox3 in current Western Australian wheat cultivars

It is concluded that a simple screen using both SnTox3 and ToxA effectors combined with simple greenhouse disease evaluation, will allow breeders to select cultivars that are more resistant to the disease, allowing them to concentrate resources on other still intractable breeding objectives.

Contribution of Parastagonospora nodorum to the leaf and glume blotch of durum wheat in Bulgaria

The results of this multiyear research showed that although P. nodorum did not appear every year, the pathogen could contribute to the leaf and glume blotch of durum wheat under conditions favourable for disease development.

Biology and molecular interactions of Parastagonospora nodorum blotch of wheat

The biology of the wheat pathogen Parastagonospora nodorum, role of its necrotrophic effectors and their interacting sensitivity genes on the redox state, how they hijack the resistance mechanisms, hormonal regulated immunity and other signalling pathways in susceptible wheat plants are discussed.



The Septoria Tritici and Stagonospora Nodorum Blotch Diseases of Wheat

  • Z. Eyal
  • Biology
    European Journal of Plant Pathology
  • 2004
The wheat pathogens Septoria tritici and stagonospora nodorum blotch of wheat are regarded as major diseases because of their impact on crop management and wheat production and a shift in prevalence and economic importance from S. nodorum to S.tritici has occurred in the UK and probably in Germany.

Mycosphaerella graminicola: latent infection, crop devastation and genomics.

This review summarizes the current knowledge on disease development and control of the fungus, and discusses how molecular tools and genomics are being employed to uncover the genetic basis of pathogenicity.

Transmission of Stagonospora nodorum and Fusarium spp. on Triticale and Wheat Seed and the Effect of Seedborne Stagonospora nodorum on Disease Severity under Field Conditions

Infected seed was shown to serve as a source of primary inoculum in epidemics of the disease in cereals and the effect of seedborne inoculum on Stagonospora nodorum blotch in the field was studied.

Triazole Seed Treatments Suppress Spore Production by Puccinia recondita, Septoria tritici, and Stagonospora nodorum from Wheat Leaves.

Reduced sporulation should help protect fall-planted wheat seedlings and may significantly delay epidemics in the following spring.

Yield Reduction in Wheat in Relation to Leaf Disease From Yellow (tan) Spot and Septoria Nodorum Blotch

Yield-loss under different rates of progress of yellow spot and septoria nodorum blotch was examined in four experiments over three years to define the relationship between disease severity and yield and provided information towards the development of disease management strategies for the control of septorian blotch and yellow spot.

Initiation of Septoria nodorum blotch epidemics in winter wheat by seedborne Stagonospora nodorum

Results showed that seedborne S. nodorum was at least partially responsible for initiation of Septoria nodorum blotch on the foliage and could provide for year-to-year perpetuation of these populations.

Foci of stagonospora nodorum blotch in winter wheat before canopy development.

The results show that genetically diverse populations of S. nodorum were already established in fields before canopy development and were comprised of sometimes overlapping foci undergoing clonal expansion.

Isocitrate Lyase Is Essential for Pathogenicity of the Fungus Leptosphaeria maculans to Canola (Brassica napus)

Findings suggest that the glyoxylate pathway is essential for disease development by this plant-pathogenic fungus, as has been shown recently for a fungal and bacterial pathogen of animals and a bacterial pathogenic of plants.


A clearer understanding of the taxonomy of this group will enhance the ability to diagnose and manage these important cereal pathogens, and have related molecular characteristics to taxonomy based on classical morphology.