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- Title
Pathogenomic Analysis ofWheat Yellow Rust Lineages Detects Seasonal Variation and Host Specificity.
- Authors
Bueno-Sancho, Vanessa; Persoons, Antoine; Hubbard, Amelia; Cabrera-Quio, Luis Enrique; Lewis, Clare M.; Corredor-Moreno, Pilar; Bunting, Daniel C. E.; Ali, Sajid; Chng, Soonie; Hodson, David P.; Burrows, Ricardo Madariaga; Bryson, Rosie; Thomas, Jane; Holdgate, Sarah; Saunders, Diane G. O.
- Abstract
Recent disease outbreaks caused by (re-)emerging plant pathogens have been associatedwith expansions in pathogen geographic distribution and increased virulence. For example, in the past two decades'wheat yellow(stripe) rust, Puccinia striiformis f. sp. tritici, has seen the emergence of new races that are adapted to warmer temperatures, have expanded virulence profiles, and are more aggressive than previous races, leading towide-scale epidemics. Here,we used field-based genotyping to generate high-resolution data on P. striiformis genetics and carried out global population analysis.We also undertook comparative analysis of the 2014 and 2013UK populations and assessed the temporal dynamics and host specificity of distinct pathogen genotypes.Our analysis revealed that P. striiformis lineages recently detected in Europe are extremely diverse and in fact similar to globally dispersed populations. In addition, we identified a considerable shift in the UK P. striiformis population structure including the first identification of one infamous race known as Kranich. Next, by establishing the genotype of both the pathogen and host within a single infected field sample, we uncovered evidence for varietal specificity for genetic groups of P. striiformis. Finally, we found potential seasonal specificity for certain genotypes of the pathogen with several lineages identified only in samples collected in late spring and into the summer,whereas one lineagewas identified throughout thewheat growing season.Our discovery ofwhichwheat varieties are susceptible towhich specific P. striiformis isolates, andwhen those isolates are prevalent throughout the year, represents a powerful tool for disease management.
- Subjects
PHYTOPATHOGENIC microorganisms; PUCCINIA striiformis; PLANT diseases; CROP losses; WHEAT trade
- Publication
Genome Biology & Evolution, 2017, Vol 9, Issue 12, p3282
- ISSN
1759-6653
- Publication type
Article
- DOI
10.1093/gbe/evx241