Showing papers by "Talma Katan published in 1999"
TL;DR: Thirty-eightformae speciales (ff.sp.) of Fusarium oxysporum which have been subjected to vegetative compatibility grouping (VCG) analysis are listed, along with their updated 3-digit numerical codes.
Abstract: Thirty-eightformae speciales (ff.sp.) ofFusarium oxysporum which have been subjected to vegetative compatibility grouping (VCG) analysis are listed, along with their updated 3-digit numerical codes. The number of VCGs identified within a forma specialis ranges from one (in 11 cases) to 24. Between two and six VCGs were identified in each of 20 ff.spp., whereas seven VCGs or more were identified in the remaining ff.spp. VCGs to which 4-digit numerical codes have been given are listed for 30 ff.spp.
138 citations
TL;DR: Thirty-fourformae speciales (ff.sp.) of Fusarium oxysporum which have been subjected to vegetative compatibility group (VCG) analysis are listed, along with their updated 3-digit numerical codes.
Abstract: Thirty-fourformae speciales (ff.sp.) ofFusarium oxysporum which have been subjected to vegetative compatibility group (VCG) analysis are listed, along with their updated 3-digit numerical codes. Ten of these ff.sp. are listed for the first time, bringing to 49 the total number of VCG-analyzed, listed ff.sp. New and corrected entries are tabulated for the remaining 24 ff.sp.
56 citations
TL;DR: Results from both VCG and RFLP analyses strongly support the inference that the European VCG 0094 constitutes a founder population that resulted from intercontinental migration of a few isolates from Palm Beach County, FL.
Abstract: Rosewich, U. L., Pettway, R. E., Katan, T., and Kistler, H. C. 1999. Population genetic analysis corroborates dispersal of Fusarium oxysporum f. sp. radicis-lycopersici from Florida to Europe. Phytopathology 89:623-630. Fusarium oxysporum isolates from tomato plants displaying crown and root rot symptoms were collected in central and southern Florida and analyzed using vegetative compatibility gr ouping (VCG) and nuclear restriction fragment length polymorphism (RFLP) data. VCG 0094 of F. oxysporum f. sp. radicis-lycopersici, previously known only from northwestern Europe, was predominant among 387 isolates assessed. In addition, two newly described VCGs (0098 and 0099) were detected at low frequencies. Floridian VCG 0094 isolates displayed a continuum of compatibilities, which is in contrast to the three distinct s ubgroups previously identified among European VCG 0094 isolates. RFLP haplotypes were constructed using one repetitive and three low-c opy probes. Population subdivision of VCG 0094 from various Floridian counties and from northwestern Europe (Belgium, the Netherlands, and the United Kingdom) was evaluated by analysis of molecular variance. A “natural” population structure was revealed, differentiating populations from the east and west coasts of Florida. In addition, isolates from Europe were statistically indistinguishable from the Palm Beach County, FL, population. Furthermore, gene diversity among Palm Beach County VCG 0094 isolates was more than five times greater than among European isolates. Results from both VCG and RFLP analyses strongly support the inference that the European VCG 0094 constitutes a founder population that resulted from intercontinental migration of a few isolates from Palm Beach County, FL.
52 citations
TL;DR: None of the isolates caused leaf symptoms or stunting in inoculated eggplant and cotton seedlings, while severe symptoms were caused by V. tricorpus, and vegetative-compatibility groups (VCGs) were found among 19 V. nigrescens isolates from nine sites, and nine VCGs among 26 isolates of V. TricorpUS from eight sites.
20 citations