sdu faculty of forestry journal special edition 2009 - Orman Fakültesi

SDU Faculty of Forestry Journal
Serial: A, Number: Special Issue, Year: 2009, ISSN: 1302-7085, Page: 206-215
POWDERY MILDEW ON WOODY PLANTS IN THE CZECH
REPUBLIC
Dagmar PALOVČÍKOVÁ 1* , Hana DANČÁKOVÁ,
Hana MATOUŠKOVÁ, Jindřiška JUNÁŠKOVÁ, Libor JANKOVSKÝ*
1 Mendel University of Agriculture and Forestry, Faculty of Forestry and Wood Technology,
Department of Forest Protection and Wildlife Management, Zemědělská 3, 613 00 Brno, Czech
Republic
ABSTRACT
*palovcik@mendelu.cz
There were identified 30 different species of powdery mildew on woody plants in the
Czech Republic. From this number of identified Erysiphales is Phyllactinia roboris
reported as a missing species actually. Eleven species of reported powdery mildews can be
termed alien for the Czech Republic, including oak powdery mildew Erysiphe alphitoides
(syn. Microsphaera alphitoides Griff.) which is naturalized species throughout Europe now.
Newly recorded species are Erysiphe arguata, E. azaleae, E. elevata, E. flexuosa, Erysiphe
palczewskii, Erysiphe syringae, Erysiphe vanbruntiana var. sambuci-racemosae. Erysiphe
euonymi-japonici was reported from herbarium specimen in 1941 only.
Keywords: Powdery mildews, Erysiphales, Alien species
1. INTRODUCTION
Several important alien diseases of woody plants were introduced in Europe
within 20th century. The largest number of newly discovered alien diseases is
belonging to the powdery mildew Erysiphales. Powdery mildew was observed by
Theoprastis on roses 300 year B.C. already. The survey of taxonomy of this group
is given eg. by Jaczewski (1927), Blumer (1967), Braun et al. (1978, 1981,
1987, 2006, 2007), Zheng (1985), Gelyuta (1989), Takamatsu et al. (2007) etc.
The main area of powdery mildew distribution is temperate zone of Northern
Hemisphere. Occurrence in tropics and subtropics is rare, in conidial stage mostly.
Some genera of powdery mildews occur also in boreal and arctic areas, eg. in
Scandinavia, Northern America, polar areas of Russia, Island and Greenland
(Braun, 1995).
Preliminary list of alien disease in the Czech Republic (CR) include more than
30 most important species, including 4 quarantine pests, most of them belonging to
Erysiphales. The aim of this paper is to evaluate of spectrum of powdery mildews
in the CR focused to alien species.
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