A thousand-genome panel retraces the global spread and adaptation of a major fungal crop pathogen

Alice Feurtey, Cécile Lorrain, Megan C McDonald, Andrew Milgate, Peter S Solomon, Rachael Warren, Guido Puccetti, Gabriel Scalliet, Stefano F F Torriani, Lilian Gout, Thierry C Marcel, Frédéric Suffert, Julien Alassimone, Anna Lipzen, Yuko Yoshinaga, Christopher Daum, Kerrie Barry, Igor V Grigoriev, Stephen B Goodwin, Anne GenisselMichael F Seidl, Eva H Stukenbrock, Marc-Henri Lebrun, Gert H J Kema, Bruce A McDonald, Daniel Croll*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Human activity impacts the evolutionary trajectories of many species worldwide. Global trade of agricultural goods contributes to the dispersal of pathogens reshaping their genetic makeup and providing opportunities for virulence gains. Understanding how pathogens surmount control strategies and cope with new climates is crucial to predicting the future impact of crop pathogens. Here, we address this by assembling a global thousand-genome panel of Zymoseptoria tritici, a major fungal pathogen of wheat reported in all production areas worldwide. We identify the global invasion routes and ongoing genetic exchange of the pathogen among wheat-growing regions. We find that the global expansion was accompanied by increased activity of transposable elements and weakened genomic defenses. Finally, we find significant standing variation for adaptation to new climates encountered during the global spread. Our work shows how large population genomic panels enable deep insights into the evolutionary trajectory of a major crop pathogen.

Original languageEnglish
Article number1059
Number of pages15
JournalNature Communications
Volume14
Issue number1
DOIs
Publication statusPublished - Dec 2023

Keywords

  • Humans
  • Adaptation, Physiological
  • Virulence/genetics
  • Acclimatization
  • Genomics
  • Plant Diseases/microbiology
  • Resistance
  • Mycosphaerella-graminicola
  • Populations
  • Genes
  • Plant-pathogens

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