Query: NC_013457:979102 Vibrio sp. Ex25 chromosome 2, complete genome
Lineage: Vibrio; Vibrio; Vibrionaceae; Vibrionales; Proteobacteria; Bacteria
General Information: Vibrio sp. EX25 was isolated from samples taken from a deep-sea hydrothermal vent community along the East Pacific Rise. Vibrio species represent a significant portion of the culturable heterotrophic bacteria of oceans, coastal waters and estuaries. Various species of this genus are devastating pathogens for finfish, shellfish and mammals.
Subject: NC_008043:167108 Silicibacter sp. TM1040 mega plasmid, complete sequence
Lineage: Ruegeria; Ruegeria; Rhodobacteraceae; Rhodobacterales; Proteobacteria; Bacteria
General Information: This strain was isolated from a culture of the dinoflagellate Pfiesteria piscicida CCMP1830 which has been implicated in many large scale algal blooms resulting in increased mortality in fish. The bacteria are attached to the surface of the dinoflagellate and in some ways allow the dinoflagellate to grow as those lacking the bacteria die off. The bacterium also chemotaxes towards the dinoflagellate product DMSP (dimethylsulfoniopropionate) and metabolizes it. DMSP is a major source of sulfur in marine ecosystems and plays a role in the sulfur biogeochemical cycle. The implication is a tight association between these important dinoflagellates and this marine bacterium.