Query: NC_015930:1397524 Lactococcus garvieae ATCC 49156, complete genome Lineage: Lactococcus garvieae; Lactococcus; Streptococcaceae; Lactobacillales; Firmicutes; Bacteria General Information: Lactococcus garviae is responsible for mastitis in cows and buffalos, and it has been isolated from clinical specimens of human blood, urine, and skin. Lactococcus garvieae is also a well recognized bacterial fish pathogen. L. garvieae as the etiological agent of a hemorrhagic septicemia in farmed trout that was characterized by bilateral exophthalmos, darkening of the skin, congestion of the intestine, liver, kidney, spleen, and brain.
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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.