![Sample our Environment & Agriculture journals, sign in here to start your access, latest two full volumes FREE to you for 14 days]({"type":"image" , "src" : "/sda/5934/TOC-Subject-Sample-2021-Environment-Agriculture.jpg"})
Abstract
Bacterial leaf spot of cilantro (coriander; Coriandrum sativum), incited by Pseudomonas syringae pv. oriandricola, caused losses in yield and quality of several hectares of cilantro in Halton-Peel county and in the marsh regions of Bradford, Ontario, in 1993–1994. Isolates recovered from diseased tissues were Gram negative with a single polar flagellum and nonfluorescent on king's medium B. Tests for levan production, oxidase reaction. potato (Solanum tuberosum) soft rot, arginine dihydrolase, and tobacco (Nicotiana tabacum) hypersensitivity were positive for levan production and tobacco hypersensitivity but negative for oxidase and arginine dihydrolase. Identification of the species and pathovar was based on host symptoms, fulfillment of Koch's postulates, cultural characteristics, physiological and determinative tests, and specificity of host range. Integrated disease control measure are outlined. This is the first report of P. syringae pv. coriandricola on cilantro in Ontario.