Figure 3: Cellular phosphate uptake rates and estimates of extracellular phosphate buffer.
From: Dominant oceanic bacteria secure phosphate using a large extracellular buffer
Comparison of measurements of uptake rates of inorganic phosphate (Pi) with estimates of cellular phosphate buffer of SAR11 (a), Prochlorococcus (Pro) (b) and average of total bacterioplankton (Bpl) (c). Dashed black lines indicate the estimated amount of phosphate in SAR11 and Prochlorococcus chromosomes. Owing to low uptake of 33Pi tracer and background uptake of 32Pi tracer at 15° N, the phosphate buffer could not be estimated. Error bars indicate propagated errors of bioassay regression slopes, s.d. of different flow cytometric sorts and buffer estimates. To assist plot reading vertical dotted grid lines indicate main x axis ticks.
