Query: NC_016929:258500 Rickettsia canadensis str. CA410 chromosome, complete genome
Lineage: Rickettsia canadensis; Rickettsia; Rickettsiaceae; Rickettsiales; Proteobacteria; Bacteria
General Information: Members of this genus, like other Rickettsial organisms such as Neorickettsia and Anaplasma, are obligate intracellular pathogens. In both groups, the bacteria are transmitted via an insect, usually a tick, to a host organism where they target endothelial cells and sometimes macrophages. They attach via an adhesin, rickettsial outer membrane protein A, and are internalized where they persist as cytoplasmically free organisms. This organism was originally thought to be a member of the typhus group of Rickettsiales, however, it is now thought to represent a distict group with the rickettsia.
Subject: NC_003919:4568892 Xanthomonas axonopodis pv. citri str. 306, complete genome
Lineage: Xanthomonas citri; Xanthomonas; Xanthomonadaceae; Xanthomonadales; Proteobacteria; Bacteria
General Information: This organism is the causal agent of citrus canker, a bacterial infection originating from southeast Asia which now occurs worldwide. Primarily a pathogen of plants in the Citrus genus, the disease is sometimes also found in other members of the Rutaceae. The bacterium survives in leaf, shoot and fruit lesions that develop during the spring, and which also cause secondary infections. During warm, wet weather in spring and early summer, the bacterium oozes out of overwintering lesions and infects new growth via the stomal pores or wounds. The bacterium may also survive for various periods of time in the soil or associated with other hosts.