First report of downy mildew of carnation caused by Peronospora dianthicola in Japan

Yellowish lesions with downy, gray growth developed on the leaves of carnations (Dianthus caryophyllus) in a greenhouse in Hokkaido Prefecture, Japan, in March 2011. We identified the fungus on diseased plants as Peronospora dianthicola on the basis of the morphologies of the conidia, conidiophores,...

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Bibliographic Details
Published in:Journal of general plant pathology : JGPP 2012-09, Vol.78 (5), p.364-367
Main Authors: Kayamori, Miyuki, Sasaki, Jun, Matsui, Rie, Shinmura, Akinori, Horita, Harukuni, Satou, Mamoru
Format: Article
Language:English
Subjects:
Agriculture
Airborne microorganisms
Biomedical and Life Sciences
conidia
conidiophores
Dianthus caryophyllus
Disease Note
downy mildew
Fungi
greenhouses
leaves
Lesions
Life Sciences
Microbiology
oospores
pathogenicity
Pathogens
Peronospora
Plant diseases
Plant Pathology
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Summary:Yellowish lesions with downy, gray growth developed on the leaves of carnations (Dianthus caryophyllus) in a greenhouse in Hokkaido Prefecture, Japan, in March 2011. We identified the fungus on diseased plants as Peronospora dianthicola on the basis of the morphologies of the conidia, conidiophores, and oospores. To confirm pathogenicity of the fungus, we inoculated healthy plants with a conidial suspension of the fungus, and the plants developed the same signs and symptoms as the naturally infected plants. We then reidentified P. dianthicola from the diseased lesions. This is the first report of downy mildew of carnation in Japan.
ISSN:1345-2630
1610-739X
DOI:10.1007/s10327-012-0391-9