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- W3201779999 abstract "Pathogens cause significant challenges to global food security. On annual crops, pathogens must re-infect from environmental sources in every growing season. Fungal pathogens have evolved mixed reproductive strategies to cope with the distinct challenges of colonizing growing plants. However, how pathogen diversity evolves during growing seasons remains largely unknown. Here, we performed a deep hierarchical sampling in a single experimental wheat field infected by the major fungal pathogen Zymoseptoria tritici. We analysed whole genome sequences of 177 isolates collected from 12 distinct cultivars replicated in space at three time points of the growing season to maximize capture of genetic diversity. The field population was highly diverse with 37 SNPs per kilobase, a linkage disequilibrium decay within 200-700 bp and a high effective population size. Using experimental infections, we tested a subset of the collected isolates on the dominant cultivar planted in the field. However, we found no significant difference in virulence of isolates collected from the same cultivar compared to isolates collected on other cultivars. About 20 % of the isolate genotypes were grouped into 15 clonal groups. Pairs of clones were disproportionally found at short distances (<5 m), consistent with experimental estimates for per-generation dispersal distances performed in the same field. This confirms predominant leaf-to-leaf transmission during the growing season. Surprisingly, levels of clonality did not increase over time in the field although reproduction is thought to be exclusively asexual during the growing season. Our study shows that the pathogen establishes vast and stable gene pools in single fields. Monitoring short-term evolutionary changes in crop pathogens will inform more durable strategies to contain diseases." @default.
- W3201779999 created "2021-10-11" @default.
- W3201779999 creator A5027850387 @default.
- W3201779999 creator A5031693310 @default.
- W3201779999 creator A5064417025 @default.
- W3201779999 date "2021-10-07" @default.
- W3201779999 modified "2023-10-16" @default.
- W3201779999 title "Population-level deep sequencing reveals the interplay of clonal and sexual reproduction in the fungal wheat pathogen Zymoseptoria tritici" @default.
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- W3201779999 doi "https://doi.org/10.1099/mgen.0.000678" @default.
- W3201779999 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/8627204" @default.
- W3201779999 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/34617882" @default.
- W3201779999 hasPublicationYear "2021" @default.
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