ISSN:
1573-5036
Keywords:
angular leafspot
;
Pseudomonas syringae pv. tabaci
;
races
;
rhizosphere
;
tobacco
;
wildfire
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Abstract Isolates of Pseudomonas syringae pv. tabaci, including 21 strains of the wildfire pathogen and 2 strains of the angular leafspot pathogen, were isolated from 143 rhizosphere and soil samples collected from 11 tobacco fields in Wisconsin. These pathogens were isolated by inoculating rhizosphere and soil washings into tobacco leaves and isolating the bacteria from wildfire or angular leafspot lesions that developed on the leaves. The wildfire isolates were from the rhizospheres of tobacco and Panicum capillare and from soil. While the majority of these were from wildfire-diseased fields, one isolate was from a field without disease symptoms; both angular leafspot isolates were from fields without angular leafspot symptoms. The majority of wildfire isolates were race 1, but three were race 0, and one was a new race. In three fields multiple races of wildfire were found. Both angular leafspot isolates were race 1. Two wildfire and one angular leafspot isolates were from fields where the cultivars were resistant to the races isolated.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00007921
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