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- Title
SEPTORIA CITRI IS A COMMON PATHOGEN OF CITRUS IN SOUTHERN ITALY.
- Authors
Biasi, A.; De Patrizio, A.; Faedda, R.; Schena, L.; Pane, A.; Cacciola, S. O.; di San Lio, G. Magnano
- Abstract
During 2011 and 2012, following low temperatures and a prolonged wet period necrotic spots were observed on overripe lemon and mandarin fruits in citrus orchards in Sicily. On lemons, symptoms consisted of pin-point reddish spots, 1 to 2 mm in diameter, on the flavedo. On mandarins, symptoms consisted of larger subcircular depressed brown sunken lesions (up to 1 cm in diameter) extending into the albedo. In both cases adjacent spots sometime merged into bigger lesions. Isolations from symptomatic tissues yielded a high frequency of isolates provisionally identified as Septoria citri. Interestingly, the same species was recovered with lower frequency from orange leaves with symptoms closely resembling those of greasy spot disease. This finding may have commercial implications as S. citri is considered a quarantine pathogen in Korea, which has regulated the import of citrus fruit from California because of the presence of this fungus. The inclusion of S. citri in the list of quarantine pathogens of citrus is questionable as surveys in other citrus-growing areas, including Australia, California and Florida, in agreement with the results of this study, indicate that S. citri may be considered ubiquitous.
- Subjects
CITRUS diseases &; pests; LOW temperature (Weather); RAINFALL; PHYTOPATHOGENIC microorganisms; FUNGAL diseases of plants; SEPTORIA diseases; SEPTORIA
- Publication
Journal of Plant Pathology, 2012, Vol 94, Issue 4, pS4.58
- ISSN
1125-4653
- Publication type
Article