@ARTICLE{TreeBASE2Ref21631, author = {Paul Andrew Covey and Mia Hanson and Brett Kuwitzky and Kimberly Webb}, title = {Multilocus analysis using fungal pathogenicity genes to describe Fusarium oxysporum from Sugar Beet}, year = {2013}, keywords = {Fusarium oxysporum f. sp. betae, Fusarium yellows, Sugar beet, Beta vulgaris, Effectors, Pathogen, AMOVA, Arlequin}, doi = {}, url = {http://}, pmid = {}, journal = {Phytopathology}, volume = {}, number = {}, pages = {}, abstract = {Sugar beet (Beta vulgaris L.) Fusarium yellows is caused by Fusarium oxysporum Schlechtend.:Fr. f. sp. betae (D. Stewart) and leads to significant reductions in root yield, sucrose percentage, juice purity, and storability. F. oxysporum f. sp. betae can be highly variable and many F. oxysporum isolated from symptomatic sugar beet are non-pathogenic. Identifying pathogenicity factors and their diversity in the F. oxysporum f. sp. betae population, could further understanding of how this pathogen causes disease and provide molecular markers to rapidly identify pathogenic isolates. This study used several previously described fungal pathogenicity genes (Fmk1, Fow1, Pda1, PelA, PelD, Pep1, Prt1, Rho1, Sge1, Six1, Six6, Snf1, and Ste12) as genetic markers, in a population of 26 pathogenic and non-pathogenic isolates of F. oxysporum originally isolated from symptomatic sugar beet. Of the genes investigated, 6 were present in all F. oxysporum isolates from sugar beet (Fmk1, Fow1, PelA, Rho1, Snf1, and Ste12), and 7 were found to be dispersed within the population (Pda1, PelD, Pep1, Prt1, Sge1, Six1, and Six6). Of these, Fmk1, Fow1, PelA, Rho1, Sge1, Snf1, and Ste12 were significant in describing clade designations and PelD, and Prt1 were significant for describing pathogenicity in F. oxysporum f. sp. betae. } }

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