Query: NC_009033:1108236 Staphylothermus marinus F1, complete genome
Lineage: Staphylothermus marinus; Staphylothermus; Desulfurococcaceae; Desulfurococcales; Crenarchaeota; Archaea
General Information: Hyperthermophilic archaeon. This organism was isolated from hydrothermal marine sediment from Vulcano Island in Italy. Staphylothermus marinus is heterotrophic and requires sulfur, which is reduced to H2S, for growth.
Subject: NC_008044:136844 Silicibacter sp. TM1040, complete genome
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.