Phytophthora alder decline: disease symptoms, causal agent and its distribution in the Czech Republic

Phytophthora decline of riparian alder populations has recently become an important problem in many European countries, including the Czech Republic. The causal agent, Phytophthora alni, has spread quickly in the Czech Republic. Hundreds of kilometres of riparian alder stands, especially in the west...

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Bibliographic Details
Published in:Plant protection science 2010, Vol.46 (1), p.12-18
Main Authors: Cerny, K.,Vyzkumny Ustav Silva Taroucy pro Krajinu a Okrasne Zahradnictvi, Pruhonice (Czech Republic), Strnadova, V.,Vyzkumny Ustav Silva Taroucy pro Krajinu a Okrasne Zahradnictvi, Pruhonice (Czech Republic)
Format: Article
Language:English
Subjects:
alder decline
ALNUS GLUTINOSA
ALNUS INCANA
Bark
bleeding canker
CANKERS
CHANCRE
Collar rot
common alder
CZECH REPUBLIC
Decline
DEPERISSEMENT TERMINAL
DIEBACK
DISTRIBUCION GEOGRAFICA
DISTRIBUTION GEOGRAPHIQUE
ENFERMEDADES DE LAS PLANTAS
EXSUDAT
EXUDADOS
EXUDATES
Exudation
Foliage
GEOGRAPHICAL DISTRIBUTION
grey alder
http://www.fao.org/aos/agrovoc#c_1251
http://www.fao.org/aos/agrovoc#c_15509
http://www.fao.org/aos/agrovoc#c_23885
http://www.fao.org/aos/agrovoc#c_23887
http://www.fao.org/aos/agrovoc#c_24017
http://www.fao.org/aos/agrovoc#c_26779
http://www.fao.org/aos/agrovoc#c_33095
http://www.fao.org/aos/agrovoc#c_5083
http://www.fao.org/aos/agrovoc#c_5844
http://www.fao.org/aos/agrovoc#c_5962
http://www.fao.org/aos/agrovoc#c_7566
MALADIE DES PLANTES
MARCHITEZ DESCENDENTE
NECROSE
NECROSIS
NECROSIS CANCEROSA
PHYTOPHTHORA
Phytophthora alni
PLANT DISEASES
REPUBLICA CHECA
REPUBLIQUE TCHEQUE
Signs and symptoms
SINTOMAS
SYMPTOME
SYMPTOMS
Trees
Yellowing
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Summary:Phytophthora decline of riparian alder populations has recently become an important problem in many European countries, including the Czech Republic. The causal agent, Phytophthora alni, has spread quickly in the Czech Republic. Hundreds of kilometres of riparian alder stands, especially in the western part of the country have been severely affected to date. Diseased trees show symptoms characteristic of Phytophthora root and collar rot; these include small, sparse and yellowing foliage, crown dieback, presence of exudates on the bark and necroses of collar and root tissues. Infected trees usually die within a few years, or they become irreversibly damaged, and their function in bank reinforcement declines. The ecological and mechanical functioning of severely affected alder stands may be seriously disrupted.
ISSN:1212-2580
1805-9341
DOI:10.17221/43/2009-pps