Cristin-resultat-ID: 1919042
Sist endret: 19. august 2021, 14:32
NVI-rapporteringsår: 2021
Resultat
Vitenskapelig artikkel
2021

Hidden in plain sight: a molecular field survey of three wheat leaf blotch fungal diseases in North-Western Europe shows co-infection is widespread

Bidragsytere:
  • Annemarie Fejer Justesen
  • Beatrice Corsi
  • Andrea Ficke
  • Lorenz Hartl
  • Sarah Holdgate
  • Lise Nistrup Jørgensen
  • mfl.

Tidsskrift

European journal of plant pathology
ISSN 0929-1873
e-ISSN 1573-8469
NVI-nivå 1

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2021
Publisert online: 2021
Volum: 160
Sider: 949 - 962
Open Access

Importkilder

Scopus-ID: 2-s2.0-85106421806

Beskrivelse Beskrivelse

Tittel

Hidden in plain sight: a molecular field survey of three wheat leaf blotch fungal diseases in North-Western Europe shows co-infection is widespread

Sammendrag

Wheat (Triticum aestivum L.) yields are commonly affected by foliar infection by fungal pathogens. Of these, three wheat leaf blotch fungal diseases, septoria nodorum blotch (SNB), tan spot (TS) and septoria tritici blotch (STB), caused by Parastagonospora nodorum (Pn), Pyrenophora tritici-repentis (Ptr) and Zymoseptoria tritici (Zt), respectively, induce major yield losses. Infection results in necrotic areas on the leaf, and it is often difficult to determine the underlying causative pathogen from visible symptoms alone, especially in mixed infections. Here, a regional survey of 330 wheat samples collected across three seasons (years 2015–2017) from four north-west European countries was undertaken. Using quantitative polymerase chain reaction (qPCR) assays specific for each pathogen, as well as disease assessment of leaf materials, distinct regional differences were identified. Two-thirds (65%) of all samples harbored at least two of the three pathogens. Norway had high SNB abundance, but also showed mixed infections of SNB, TS and STB. In Germany, TS was prevalent, with STB also common. Danish samples commonly possessed all three pathogens, with STB prevalent, followed by TS and SNB. The UK had a major prevalence of STB with minimal occurrence of TS and SNB. Across all samples, qPCR identified Zt, Pn and Ptr in 90%, 54% and 57% of samples, respectively. For each pathogen, average disease levels via visual assessment showed modest positive correlation with fungal DNA concentrations (R2 = 0.13–0.32). Overall, our study highlights that the occurrence of mixed infection is common and widespread, with important implications for wheat disease management and breeding strategies.

Bidragsytere

Annemarie Fejer Justesen

  • Tilknyttet:
    Forfatter
    ved Aarhus Universitet

Beatrice Corsi

  • Tilknyttet:
    Forfatter
    ved National Institute of Agricultural Botany

Andrea Ficke

  • Tilknyttet:
    Forfatter
    ved Divisjon for bioteknologi og plantehelse ved Norsk institutt for bioøkonomi

Lorenz Hartl

  • Tilknyttet:
    Forfatter
    ved Tyskland

Sarah Holdgate

  • Tilknyttet:
    Forfatter
    ved National Institute of Agricultural Botany
  • Tilknyttet:
    Forfatter
    ved Storbritannia og Nord-Irland
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