FIG 1 .

Growth of OM43 clade betaproteobacterial strain NB0046 in Sargasso seawater medium amended with different nutrient and carbon substrates. Error bars represent the SD of triplicate samples for each treatment. For regime IV, the total length of the experiment was twice that of the others. Inorganic nutrients, 30 µM phosphate and 400 µM ammonium; vitamins, AMS1 vitamin mixture; vented and shaking, incubation bottles were shaken at 60 rpm and their caps loosed to increase ventilation of the medium. Arrows indicate sampling points from which transcriptomes were generated.