A medium to enhance identification of Septoria musiva from poplar cankers

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A series of experiments was conducted to determine the relative tolerance of an isolate of (a fungus that causes a severely damaging stem canker disease of poplars) for selected chemicals. Inhibition of diameter growth of this fungus on a V-8 vegetable juice-based medium with captan, chlorothalonil, iprodione, mancozeb and streptomycin sulphate at concentrations, respectively, of 50, 1, 10, 10, and 100 mg l was relatively low compared to inhibition of eight other fungi cultured from cankers on poplars. In addition, the presence of captan stimulated profuse sporulation of the fungus. These properties assisted in the identification of from cankers resulting from artificial inoculation of poplar branches in the field.

Un milieu de culture pour aider à l'identification de Septoria musiva isolé de chancres sur peuplier

Un isolat de Septoria musiva, champignon responsable de chancres de tronc sur peupliers, àété testéin vitro pour sa tolérance à un certain nombre de substances. L'inhibition de la croissance en diamètre a été déterminée sur milieu V8 additionné de captan, chlorothalonil, iprodione, mancozèbe et sulfate de streptomycine aux concentrations respectives de 50, 1, 10, 10, et 100 mg par litre; l'inhibition était relativement faible comparée à celle de huit autres champignons isolés de chancres de peuplier. La présence de captan stimulait la sporulation du champignon. Ces propriétés ont aidéà l'identification du S. musiva réisoléà partir de chancres obtenus au champ par inoculation artificielle de branches de peuplier.

Document Type: Research Article

DOI: http://dx.doi.org/10.1046/j.1439-0329.2002.00278.x

Affiliations: Department of Plant Pathology, University of Wisconsin-Madison, 1630 Linden Drive, Madison, WI 53706–1598, USA. Email:grs@plantpath.wisc.edu

Publication date: June 1, 2002

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