A new perspective on the evolution of white blister rusts: Albugo s.str. (Albuginales; Oomycota) is not restricted to Brassicales but also present on Fabales

摘要: For almost all groups of pathogens, unusual and rare host species have been reported. Often, such associations are based on single or few collections only, which frequently hard to access. Many them later prove be due misidentification the host, pathogen, both. Therefore, reports often disregarded, treated anecdotally in taxonomic phylogenetic studies, regardless their potential importance unravelling evolution entire group. Concerning oomycete biotrophs there several hosts for hardly known pathogens. In order Fabales, example, a Albugo, A. mauginii, was described as parasitic Onobrychis crista-galli about 80 years ago, but not recorded again. All other confirmed members Albugo s.str. representatives families Brassicaceae, Capparaceae, Cleomaceae, Resedaceae Brassicales. present study, molecular analysis cox2 mtDNA sequences morphological investigations an original specimen occurrence member Fabaceae hosts, with characteristic thin wall secondary sporangia, is uniform thickness. analyses results embedded within it concluded that natural range extends from Brassicales Fabales via jumping. Our underscore unrevised pathogens should reconsidered carefully obtain more complete picture pathogen diversity evolution.