Origins of Host Specific Populations of Puccinia triticina Revealed by SNP Markers (Preliminary). M. Liu and J. A. Kolmer USDA-ARS Cereal Disease Laboratory, St. Paul, MN 55108. World-wide P. triticina SSR groups. North America South America Central Asia Middle East Europe New Zealand
Origins of Host Specific Populations of Puccinia triticina Revealed by SNP Markers (Preliminary)
M. Liu and J. A. Kolmer
USDA-ARS Cereal Disease Laboratory, St. Paul, MN 55108
(EU, SA, ME, NA)
FST = 0.331
Some geographical relationship
SA, NA vs. EU, ME, CA, NZ, SAF
Except ME1 with NA and SA
Durum groups distinct from common wheat groups
Is the common wheat type the original form of P. triticina – and durum type more recently derived?
To further infer the evolutionary relationships among populations with the aid of coalescence theory and DNA single nucleotide polymorphism (SNP) markers
Clusters of P. triticina populations based on 94 SNPs from three house keeping genes, seven SSR flanking regions and six IGV selected anonymous loci.
L=134 CI=0.709 RI=0.884
One of 258367 most parsimonious phylograms based on SNPs from three house keeping genes and six IGV selected anonymous loci. Isolates on durum wheat formed clade.
L=271 CI=0.915 RI=0.955
Inference of haplotypes based on diploid (dikaryotic) data
PHASE 2.1 Stephens, M et al 2001. A new statistical method for haplotype reconstruction from population data. American Journal of Human Genetics 68:978—989
IM, IMa, IMa2
Department of Genome Science, U of Washington
We thank Drs. Les Szabo, John Fellers and Christina Cuomo for facilitating ML to access IGV and Pt whole genome database; Kun Xiao, Jerry Johnson and Kim Phuong Nguyen for technical help.