Query: NC_007645:6350079 Hahella chejuensis KCTC 2396, complete genome
Lineage: Hahella chejuensis; Hahella; Hahellaceae; Oceanospirillales; Proteobacteria; Bacteria
General Information: This organism was isolated from marine sediment from Cheju Island, Republic of Korea. Hahella chejuensis is a slight halophile with an optimum salinity of 2%. This organism produces a large amount of exopolysaccharide, which has potential as an emulsification agent.
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.