The Probable Center of Origin of Fusarium oxysporum f. sp. lycopersici VCG 0033

Plant Disease
Liane Rosewich GaleH Corby Kistler

Abstract

Isolates of the tomato wilt pathogen Fusarium oxysporum f. sp. lycopersici, predominantly from commercial tomato fields in Florida and southwestern Georgia, were characterized using vegetative compatibility grouping (VCG), nuclear restriction fragment length polymorphism (RFLP), and virulence. All field isolates that could be grouped into VCG belonged to VCG 0033. This VCG was first described by Marlatt et al. in 1996 for isolates from northern Florida, Arkansas, and North Carolina. This study demonstrates that VCG 0033 is also widespread in central and southern Florida, in addition to southwestern Georgia, and also was found to be present in Puerto Rico. Population genetic and phylogenetic analyses of 121 isolates indicated that molecular diversity among VCG 0033 isolates was by far the highest in Manatee County, FL, suggesting it to be the probable center of origin of this relatively newly described VCG. Virulence tests with a subset of isolates identified all VCG 0033 isolates as race 3, although differences in aggressiveness were observed among tested isolates, independent of resistance genes in the differential cultivars. The widespread VCG 0030 of F. oxysporum f. sp. lycopersici was not present in our field collections. T...Continue Reading

Citations

Nov 19, 2013·Environmental Microbiology·Wilfried JonkersH Corby Kistler
Jul 9, 2016·Environmental Microbiology·Peter van DamMartijn Rep
Feb 21, 2009·The Plant Journal : for Cell and Molecular Biology·Petra M HoutermanMartijn Rep
Oct 1, 2014·Nature Reviews. Genetics·David S GuttmanPaul Schulze-Lefert
Feb 18, 2016·Scientific Reports·D NirmaladeviNayaka S Chandra
Oct 17, 2017·Applied and Environmental Microbiology·Peter van DamMartijn Rep

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