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The Probable Center of Origin of Fusarium oxysporum f. sp. lycopersici VCG 0033
Year:
2003
Source of publication :
Plant Disease
Authors :
Katan, Talma
;
.
Volume :
87
Co-Authors:

Gale, L.R., Cereal Disease Laboratory, Department of Plant Pathology, University of Minnesota, St. Paul, MN 55108, United States
Katan, T., Department of Plant Pathology, ARO, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Kistler, H.C., Cereal Disease Laboratory, Department of Plant Pathology, University of Minnesota, St. Paul, MN 55108, United States

Facilitators :
From page:
1433
To page:
1438
(
Total pages:
6
)
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. This was unexpected, as strains from Florida isolated prior to 1990 were predominantly VCG 0030. This would suggest that VCG 0033 has replaced VCG 0030 in recent years in commercial tomato fields of Florida and southwestern Georgia.
Note:
Related Files :
biodiversity
Fusarium
genetic engineering
Molecular Biology
Myxogastria
Vegetative compatibility grouping (VCG)
Show More
Related Content
More details
DOI :
Article number:
0
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
31447
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 01:02
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Scientific Publication
The Probable Center of Origin of Fusarium oxysporum f. sp. lycopersici VCG 0033
87

Gale, L.R., Cereal Disease Laboratory, Department of Plant Pathology, University of Minnesota, St. Paul, MN 55108, United States
Katan, T., Department of Plant Pathology, ARO, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Kistler, H.C., Cereal Disease Laboratory, Department of Plant Pathology, University of Minnesota, St. Paul, MN 55108, United States

The Probable Center of Origin of Fusarium oxysporum f. sp. lycopersici VCG 0033
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. This was unexpected, as strains from Florida isolated prior to 1990 were predominantly VCG 0030. This would suggest that VCG 0033 has replaced VCG 0030 in recent years in commercial tomato fields of Florida and southwestern Georgia.
Scientific Publication
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