Genome-Wide Association Mapping of Barley Yellow Dwarf Virus Tolerance in Spring Oat Avena sativa L.Reportar como inadecuado




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Barley yellow dwarf viruses BYDVs are responsible for the disease barley yellow dwarf BYD and affect many cereals including oat Avena sativa L

Until recently, the molecular marker technology in oat has not allowed for many marker-trait association studies to determine the genetic mechanisms for tolerance. A genome-wide association study GWAS was performed on 428 spring oat lines using a recently developed high-density oat single nucleotide polymorphism SNP array as well as a SNP-based consensus map. Marker-trait associations were performed using a Q-K mixed model approach to control for population structure and relatedness. Six significant SNP-trait associations representing two QTL were found on chromosomes 3C Mrg17 and 18D Mrg04. This is the first report of BYDV tolerance QTL on chromosome 3C Mrg17 and 18D Mrg04. Haplotypes using the two QTL were evaluated and distinct classes for tolerance were identified based on the number of favorable alleles. A large number of lines carrying both favorable alleles were observed in the panel.



Autor: Bradley J. Foresman, Rebekah E. Oliver, Eric W. Jackson, Shiaoman Chao, Marcio P. Arruda, Frederic L. Kolb

Fuente: http://plos.srce.hr/



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