ARS | Publication request: Bacterial Leaf Spot of Parsley: Characterization of a New Disease

Submitted to: University of California Press-Cooperative Extension
Publication Type: Other
Publication Acceptance Date: April 28, 2011
Publication Date: April 30, 2011
Citation: Koike, S.T., Bull, C.T. 2011. Bacterial Leaf Spot of Parsley: Characterization of a New Disease. University of California Press-Cooperative Extension. March/April 2011:4-6.

Technical Abstract: Since 2002, a severe leaf spot disease on parsley has occurred throughout central coastal California and particularly in Monterey County. Two different bacterial pathogens (Pseudomonas syringae pv. apii, and P. syringae pv. coriandricola) have been associated these outbreaks on parsley. Our research team is also investigating a possible new bacterial disease on fennel, as well. We are seeking additional samples of foliar problems from any member of the Apiaceae crop group: celery, cilantro, dill, fennel, parsley, and others because we are investigating the ecology of these pathogens. Further clarification of the ecological relationship among these pathogens, determination of which hosts are susceptible to which pathogen, and other aspects may assist industry in managing these diseases.