|KOIKE, STEVEN - University Of California - Cooperative Extension Service|
Submitted to: University of California Press-Cooperative Extension
Publication Type: Other
Publication Acceptance Date: 4/5/2011
Publication Date: 4/5/2011
Citation: Bull, C.T., Koike, S.T. 2011. Show us your spots! Researchers need samples of bacterial leaf spots on celery, cilantro, parsley, and other crops.. University of California Press-Cooperative Extension. Available:http://ucanr.org/blogs/blogcore/postdetail.cfm?postnum=4519&utm_source=RSS&utm_medium=RSS&utm_campaign=RSS%2BFeed.
Technical Abstract: Since 2002, a severe leaf spot disease on parsley has occurred throughout central coastal California and particularly in Monterey County. Three different bacterial pathogens (Pseudomonas syringae pv. apii, P. syringae pv. coriandricola and an organism very closely related to P. viridiflava) have been associated these outbreaks on parsley. Our research team is also investigating a possible new bacterial disease on fennel, as well. Because of these developments on commercially grown plants in the Apiaceae, we are seeking additional samples of foliar problems from any member of the Apiaceae crop group: celery, cilantro, dill, fennel, parsley, and others. Further clarification of the relationship between these various bacterial pathogens, determination of which hosts are susceptible to which pathogen, and other aspects may assist industry in managing these diseases.