Abstract
A description is provided for Xanthomonas vesicatoria. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On tomato, Lycopersicon esculentum, and Chilli peppers, Capsicum frutescens; also on Lycopersicon pimpinelifolium, Datura stramonium, Hyoscyamus niger, H. aureus, Lycium chinense, L. halimifolium, Nicotiana rustica, Physalis minima, Solanum dulcamara, S. nigrum, S. rostratum, S. tuberosum, S. melongena. DISEASE: Bacterial scab or spot. The pathogen causes a superficial corky scab of the fruits with irregularly lobed margins and water-soaked halos, a leaf spot or blight and a canker of the stems and petioles. GEOGRAPHICAL DISTRIBUTION: U.S.A., Mexico, Canada, Jamaica, Puerto Rico, Bermuda, Brazil, Argentina, Hawaii, Australia, Japan, India, China. Israel, Italy, Hungary, Yugoslavia, Bulgaria, Rumania, Lithuania, U.S.S.R., Mozambique, South Africa, Southern Rhodesia. (CMI Map 269). TRANSMISSION: On seed and by wind driven rain. Leaf infection occurs through the stomata, fruit infection through wounds. Overwintering in the dead stalks of diseased tomato plants and also survival in rhizospheres of dead plants has been recorded by Peterson (Phytopathology 53: 765-767, 1963) as well as overwintering on wheat roots (25: 479). Fruit symptoms reported to be associated with punctures by Nezara viridula (37: 249).