Widespread Distribution of Apple mosaic virus on Apple in Turkey

Plant Disease
B Akbaş, D Ilhan

Abstract

From 2002 to 2003, symptoms suggestive of Apple mosaic virus (ApMV; a member of the genus Ilavirus) infection on apple (Malus pumila L.) trees were observed in orchards in the central Anatolia Region of Turkey. Symptoms on leaves included pale-to-bright cream spots, mosaic, and yellowing on the leaves. A survey was conducted during May and June in three provinces (Isparta, Karaman, and Niğde) for disease symptoms. Leaf samples from apple cvs. Anna, Gala, Gold Star, Golden Delicious, Granny Smith, Jonathan, Starking, and Rajka were collected and tested for the presence of ApMV with specific antisera (Agdia, Elkhart, IN) using the manufacturer's protocol for double-antibody sandwich enzyme-linked immunosorbent assay (DAS-ELISA). ApMV was found in 68.3% of 461 samples tested. The number of samples for each cultivar tested and percent positive for ApMV were as follows: 22 (9.1%), 34 (8.8%), 22 (13.6%), 30 (73.3%), 270 (95.5%), 46 (54.3%), and 22 (9.1%) for cvs. Anna, Gala, Gold Star, Golden Delicious, Granny Smith, Starking, and Rajka, respectively. All 15 samples tested of cv. Jonathan were negative using DAS-ELISA. Samples that tested positive for ApMV were mechanically inoculated onto Chenopodium amaranticolor, C. quinoa, and Cu...Continue Reading

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