Epidemiological trade-off between intra- and interannual scales in the evolution of aggressiveness in a local plant pathogen population.

ABSTRACT: The efficiency of plant resistance to fungal pathogen populations is expected to decrease over time, due to their evolution with an increase in the frequency of virulent or highly aggressive strains. This dynamics may differ depending on the scale investigated (annual or pluriannual), particularly for annual crop pathogens with both sexual and asexual reproduction cycles. We assessed this time-scale effect, by comparing aggressiveness changes in a local Zymoseptoria tritici population over an 8-month cropping season and a 6-year period of wheat monoculture. We collected two pairs of subpopulations to represent the annual and pluriannual scales: from leaf lesions at the beginning and end of a single annual epidemic and from crop debris at the beginning and end of a 6-year period. We assesse

SUBMITTER: Suffert F 

PROVIDER: S-EPMC5979725 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature