Query: NC_010407:316320 Clavibacter michiganensis subsp. sepedonicus chromosome, complete
Lineage: Clavibacter michiganensis; Clavibacter; Microbacteriaceae; Actinomycetales; Actinobacteria; Bacteria
General Information: Causative agent of bacterial ring rot. Isolated from infected potato. This organism was first described and classified in 1914 as "Bacterium sepedonicus" and is considered a major plant pathogen. It is a phytopathogenic actinomycete that causes wilt and tuber rot in potato, which is a plant vascular disease with very high bacterial titers. Pathogenicity is believed to be associated with the presence of two plasmids, pCSL1 and pCSL2. This species is subdivided into five subspecies: michiganensis, sepedonicus, nebraskensis, tesselarius and insidiosus each of which infects specific hosts: tomato, potato, corn, wheat and alfalfa, respectively. Members of the Clavibacter genus are known to produce antimicrobial compounds.
Subject: NC_002488:2502000 Xylella fastidiosa 9a5c, complete genome
Lineage: Xylella fastidiosa; Xylella; Xanthomonadaceae; Xanthomonadales; Proteobacteria; Bacteria
General Information: This strain was derived from a pathogenic strain (8.1b) isolated in 1992 in France that had come from infected twigs derived from the sweet orange strain Valencia in Brazil in the same year. This organism was first identified in 1993 as the causal agent of citrus variegated chlorosis, a disease that affects varieties of sweet oranges. Other strains of this species cause a range of diseases in mulberry, pear, almond, elm, sycamore, oak, maple, pecan and coffee which collectively result in multimillion dollar devastation of economically important plants. Xylella fastidiosa is similar to Xanthomonas campestris pv. campestris in that it produces a wide variety of pathogenic factors for colonization in a host-specific manner including a large number of fimbrial and afimbrial adhesins for attachment. It does not contain a type III secretion system, but possesses genes for a type II secretion system for export of exoenzymes that degrade the plant cell wall and allow the bacterium to colonize the plant xylem.