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dc.contributor.authorHjortshoj RL
dc.contributor.authorRavnshoj AR
dc.contributor.authorNyman M
dc.contributor.authorOrabi J
dc.contributor.authorBackes G
dc.contributor.authorPinnschmidt H
dc.contributor.authorHavis ND
dc.contributor.authorStougaard J
dc.contributor.authorStuckenbrock EH
dc.date.accessioned2015-01-16T15:55:19Z
dc.date.available2015-01-16T15:55:19Z
dc.date.issued2013
dc.identifier.citation136:1en_US
dc.identifier.urihttp://dx.doi.org/10.1007/s10658-012-0137-8
dc.identifier.urihttp://hdl.handle.net/11262/10572
dc.description.abstractThe ascomycete pathogen Ramularia collocygni causes Ramularia leaf spot (RLS) on barley. Although R. collo-cygni is considerd an emerging disease of barley, little is known about genetic diversity or population genetic structure of this pathogen. We applied a set of polymorphic AFLP (Amplified Fragment Length Polymorphism) markers to investigate population genetic structure in two Northern European populations of R. collo-cygni. The distribution of AFLP alleles revealed low levels of population subdivision and high levels of genetic diversity at both locations. Our analyses included 87 isolates and of these 84 showed a unique genotype pattern. The genetic structure of populations in Scotland and Denmark is highly similar and we find no evidence of population sub-division. An analysis of molecular variance was used to show that 86 % of the variance is attributable to within field genetic variance. In spite of the high levels of genetic and genotypic diversity in the R. collo-cygni populations, we find significant evidence of linkage disequilibrium among the AFLP alleles using a multilocus analysis. We propose that the high levels of genotypic diversity and the lack of population differentiation result from considerable levels of gene flow between populations most likely mediated by seed borne dispersal of inoculum.en_US
dc.language.isoenen_US
dc.relation.isformatof13832en_US
dc.relation.ispartofEuropean Journal of Plant Pathologyen_US
dc.rightsCopyright © KNPV 2012en
dc.subjectLinkage disequilibriumen_US
dc.subjectGenetic differentiationen_US
dc.subjectDiversity indexen_US
dc.subjectAFLPen_US
dc.subjectPopulation geneticsen_US
dc.subjectRamularia collo-cygnien_US
dc.titleHigh levels of genetic and genotypic diversity in field populations of the barley pathogen Ramularia collo-cygnien_US
dc.typeArticleen_US
dc.description.versionAccepted Manuscripten
dc.extent.pageNumbers51en_US
dc.extent.pageNumbers60en_US


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