Identity, pathogenicity, and comparative virulence of Fusarium spp. related to stand declines of leafy spurge (Euphorbia esula) in the Northern Plains

Strains of Fusarium spp. causing root disease and crown rot on leafy spurge in natural epidemics and in association with stand declines were identified as F. oxysporum, F. solani, and F. proliferatum. These species predominated among Fusarium spp. isolated from stunted and diseased feeder roots and...

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Published inPlant disease Vol. 80; no. 12
Main Author Caesar, A.J. (USDA, ARS, Montana State University, Bozeman.)
Format Journal Article
LanguageEnglish
Published 01.12.1996
Subjects
AUXILIAIRE DE LUTTE BIOLOGIQUE
CONTROL BIOLOGICO
DEPERISSEMENT TERMINAL
DESHERBAGE
DIFERENCIAS BIOLOGICAS
DIFFERENCE BIOLOGIQUE
ENCUESTAS SANITARIAS
ENFERMEDADES FUNGOSAS
ENQUETE PATHOLOGIQUE
ESCARDA
EUPHORBIA ESULA
FUSARIUM OXYSPORUM
FUSARIUM PROLIFERATUM
FUSARIUM SOLANI
IDENTIFICACION
IDENTIFICATION
LUTTE BIOLOGIQUE
MALADIE FONGIQUE
MARCHITEZ DESCENDENTE
ORGANISMOS PARA CONTROL BIOLOGICO
PATOGENICIDAD
POUVOIR PATHOGENE
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Summary:Strains of Fusarium spp. causing root disease and crown rot on leafy spurge in natural epidemics and in association with stand declines were identified as F. oxysporum, F. solani, and F. proliferatum. These species predominated among Fusarium spp. isolated from stunted and diseased feeder roots and crowns. There were significant differences in virulence for strains among and within each species. Two strains of F. oxysporum belonged to the same vegetative compatibility group. Ten of 11 strains of Fusarium originated from noncropped or wild areas. These results indicate that Fusarium spp. capable of causing disease on leafy spurge vary as to species, virulence, and compatibility group and are found in a number of sites where this troublesome perennial weed occurs
Bibliography:H60
9705788
ISSN:0191-2917
1943-7692
DOI:10.1094/PD-80-1395