Plant Disease (2017) 101, p. 1043 (Garibaldi et al.)

A. Garibaldi, G. Gilardi, S. Matic and M.L. Gullino (2017)
First report of Botrytis cinerea on Hydrangea paniculata in Italy
Plant Disease 101 (6), 1043-1043
Abstract: During 2016, ornamental Hydrangea paniculata plants grown in Italy were observed with symptoms of small necrotic spots (4 mm diam.) surrounded by a chlorotic halo, turning progressively brown to black. Lesions often coalesced, generating larger necrotic areas 3 to 8 cm in diameter. Necrosis developed particularly in correspondence of flower dropping of common evening primrose (Oenothera biennis), grown in the same garden close to H. paniculata. About 20 to 30% of the leaves from 20 plants showed symptoms, and up to 60% at 15 to 25°C. The fungus Botrytis cinerea was isolated from the diseased plants. The identification was based on morphological characteristics and DNA sequence analysis. Pathogenicity of the isolates was demonstrated by inoculation and re-isolation.
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Database assignments for author(s): Slavica Matic

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Botrytis cinerea	Hydrangea (crop)	Italy