First Report of Blight on Buxus spp. Caused by Cylindrocladium buxicola in Belgium

Plant Disease
C Crepel, S Inghelbrecht

Abstract

In the fall of 2000, a new blight disease was observed on Buxus spp. in private gardens in Belgium. Since then, more and similar disease samples from other Belgian sites, nurseries, and several garden centers have been received, indicating that this disease is spreading. Similar observations have been made in the U.K. and France, where the disease is widespread and losses are sometimes dramatic (1). Diseased plants have dark brown-to-black leaf spots and streaky, black stem lesions which lead, in some cases, to complete defoliation. On some infected plants new leaves grew in defoliated areas, hiding the original blight symptoms. Infection was mainly observed on Buxus sempervirens cv. Suffruticosa, but B. sempervirens cv. Latifolia raculata, B. microphylla cv. Compacta, and B. microphylla var. japonica cv. Faulkner were also infected. In the U.K., infections have additionally been reported on varieties of B. sempervirens, B. sinica, and B. microphylla (1). On the basis of observed symptoms and comparison of the symptoms with descriptions by Henricot and Culham (2), we identified that this new form of Buxus blight in Belgium is caused by Cylindrocladium buxicola. Sporulating cultures on potato dextrose agar (PDA) had macroconidio...Continue Reading

Citations

Apr 4, 2018·Applied Microbiology and Biotechnology·Nicholas LeBlancJo Anne Crouch
Jul 10, 2019·Annual Review of Phytopathology·Margery L Daughtrey
Jan 14, 2017·Studies in Mycology·L LombardP W Crous

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