Multilocus Genotypes of the Wheat Leaf Rust Fungus Puccinia triticina in Worldwide Regions Indicate Past and Current Long-Distance Migration

• DOI: 10.1094/phyto-10-18-0411-r
• Publication Date: 2019-04-01T13:39:06Z
• Authors: J. A. Kolmer; M. E. Ordoñez; S. German; A. Morgounov; Z. Pretorius; B. Visser; H. Goyeau; Y. Anikster; M. Acevedo
• Keywords: Urediniospore; Wheat leaf rust; Rust (programming language)

Many plant pathogenic fungi have a global distribution across diverse ecological zones and agricultural production systems. Puccinia triticina, the wheat leaf rust fungus, is major pathogen in many areas of world. The objective this research was to determine genetic relatedness P. triticina different worldwide regions. A total 831 single-uredinial isolates collected from 11 regions were characterized for multilocus genotype at 23 simple sequence repeat loci virulence 20 lines with single genes resistance. 424 genotypes 497 phenotypes found. All populations had high heterozygosity significant correlation between molecular variation, which indicated clonal reproduction. North America South America, Central Asia Russia, Middle East Europe closely related individual other continental related. Twenty-seven found more than one region, 13 these identical phenotypes. wide geographic highly past recent migration events facilitated by spread clonally produced urediniospores.