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dc.contributor.author
Dutta, Anik
dc.contributor.author
Croll, Daniel
dc.contributor.author
McDonald, Bruce
dc.contributor.author
Barrett, Luke G.
dc.date.accessioned
2021-03-05T08:37:44Z
dc.date.available
2020-10-07T14:16:29Z
dc.date.available
2020-10-08T10:50:53Z
dc.date.available
2021-03-05T08:37:44Z
dc.date.issued
2021-02
dc.identifier.issn
1752-4571
dc.identifier.issn
1752-4563
dc.identifier.other
10.1111/eva.13117
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/444935
dc.identifier.doi
10.3929/ethz-b-000444935
dc.description.abstract
Genetic diversity within pathogen populations is critically important for predicting pathogen evolution, disease outcomes and prevalence. However, we lack a good understanding of the processes maintaining genetic variation and constraints on pathogen life‐history evolution. Here, we analysed interactions between 12 wheat host genotypes and 145 strains of Zymoseptoria tritici from five global populations to investigate the evolution and maintenance of variation in pathogen virulence and reproduction. We found a strong positive correlation between virulence (amount of leaf necrosis) and reproduction (pycnidia density within lesions), with substantial variation in both traits maintained within populations. On average, highly virulent isolates exhibited higher reproduction, which might increase transmission potential in agricultural fields planted to homogeneous hosts at a high density. We further showed that pathogen strains with a narrow host range (i.e. specialists) for reproduction were on average less virulent, and those with a broader host range (i.e. generalists) were on average less fecund on a given specific host. These costs associated with adaptation to different host genotypes might constrain the emergence of generalists by disrupting the directional evolution of virulence and fecundity. We conclude that selection favouring pathogen strains that are virulent across diverse hosts, coupled with selection that maximizes fecundity on specific hosts, may explain the maintenance of these pathogenicity traits within and among populations.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Wiley
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.subject
Host specialization
en_US
dc.subject
Reproduction
en_US
dc.subject
Trade-off
en_US
dc.subject
Virulence
en_US
dc.subject
Wheat
en_US
dc.subject
Zymoseptoria tritici
en_US
dc.title
Maintenance of variation in virulence and reproduction in populations of an agricultural plant pathogen
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 4.0 International
dc.date.published
2020-08-18
ethz.journal.title
Evolutionary Applications
ethz.journal.volume
14
en_US
ethz.journal.issue
2
en_US
ethz.journal.abbreviated
Evol. appl.
ethz.pages.start
335
en_US
ethz.pages.end
347
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Hoboken, NJ
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02350 - Dep. Umweltsystemwissenschaften / Dep. of Environmental Systems Science::02720 - Institut für Integrative Biologie / Institute of Integrative Biology::03516 - McDonald, Bruce / McDonald, Bruce
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02350 - Dep. Umweltsystemwissenschaften / Dep. of Environmental Systems Science::02720 - Institut für Integrative Biologie / Institute of Integrative Biology::03516 - McDonald, Bruce / McDonald, Bruce
ethz.date.deposited
2020-10-07T14:16:34Z
ethz.source
WOS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2021-03-05T08:38:05Z
ethz.rosetta.lastUpdated
2021-03-05T08:38:05Z
ethz.rosetta.exportRequired
true
ethz.rosetta.versionExported
true
ethz.COinS
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