Plant Protect. Sci., 2008, 44(2):41-48 | DOI: 10.17221/20/2008-PPS

Occurrence of anamorphic and teleomorphic stage of Erysiphe palczewskii (syn. Microsphaera palczewskii) on Caragana arborescens in the Czech Republic and Austria and its morphological characterisation

Aleš Lebeda1, Barbora Mieslerová1, Michaela Sedlářová1, Miloš Pejchal2
1 Department of Botany, Faculty of Science, Palacký University in Olomouc, Olomouc-Holice, Czech Republic
2 Department of Planting Design and Maintenance, Faculty of Horticulture, Mendel University of Agriculture and Forestry in Brno, Lednice, Czech Republic

During the summer of 2007 in a private garden in Smržice (district Prostějov, Czech Republic) symptoms of powdery mildew on Caragana arborescens were recorded. Until now at least two powdery mildew species (Microsphaera trifolii var. trifolii and M. palczewskii), both differing in some basic morphological features, have been recorded for the genus Caragana. Comparison of our measurements with previous descriptions of powdery mildew samples found in the Czech Republic on Caragana arborescens identified our species as Microsphaera palczewskii (newly Erysiphe palczewskii). This is probably the first detailed record of this species on C. arborescens in the Czech Republic. Fungus from Czech Republic was compared with the material collected in 2007 in Vienna (Austria). The aim of this paper was to provide a detailed comparative morphological characterisation of E. palczewskii anamorph and teleomorph found in the Czech Republic and in Austria. Serious reduction of the anamorph, caused by hyperparasitic fungus Ampelomyces quisqualis, was recorded on the sample from Austria.

Keywords: Ampelomyces quisqualis; Caragana arborescens; chasmothecia; conidia; Erysiphe palczewskii; Microsphaera trifolii var. trifolii; Siberian pea-shrub

Published: June 30, 2008  Show citation

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Lebeda A, Mieslerová B, Sedlářová M, Pejchal M. Occurrence of anamorphic and teleomorphic stage of Erysiphe palczewskii (syn. Microsphaera palczewskii) on Caragana arborescens in the Czech Republic and Austria and its morphological characterisation. Plant Protect. Sci.. 2008;44(2):41-48. doi: 10.17221/20/2008-PPS.
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