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ARS Home » Northeast Area » Frederick, Maryland » Foreign Disease-Weed Science Research » Research » Publications at this Location » Publication #193897
Title: GENETIC DIVERSITY IN POPULATIONS OF XANTHOMONAS CAMPESTRIS PV. CAMPESTRIS IN CRUCIFEROUS WEEDS IN CENTRAL COASTAL CALIFORNIA

Author
item IGNATOV, ALEXANDER - CENTER BIOENGINEERING
item VIDAVER, ANNE - UNIVERSITY OF NEBRASKA
item AGARKOVA, I - UNIVERSITY OF NEBRASKA
item OLIVER, B - CALIFORNIA DOA
item Schaad, Norman

Submitted to: Phytopathology
Publication Type: Abstract Only
Publication Acceptance Date: 3/22/2006
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: Xanthomonas campestris pv. campestris (Xcc) infects a large number of cruciferous plants, including weeds. California has one of the largest and most diverse populations of wild cruciferous plants in the world. Although considerable information is available on the genetic diversity of Xcc in commercial crop plants, nothing is known about the diversity in strains infecting weeds. To assess genetic diversity among strains of Xcc in weeds in non-cultivated and cultivated areas, strains were isolated from populations of cruciferous weeds growing in coastal valley (inland) crop production and non-production sites and remote non-production sites along the California Central Coast. Preliminary results of fingerprinting over 50 strains using AFLP revealed 8 genotypes. Genotypes A and E were limited to coastal sites, genotype F was from an inland non-production site, genotypes B, D, G, and H were from inland cultivated sites, and genotype C was present in both coastal and inland sites. None of the 6 crop strains tested clustered with the weed strains. Strains of Xcc in non-cultivated coastal weed populations were generally unique to a site and genetically distinct from strains present in weeds in cultivated areas.