Fig. 1: Nutrient uptake of naturally occurring Prochlorococcus populations at the Eastern Mediterranean Sea. | Nature Microbiology

Fig. 1: Nutrient uptake of naturally occurring Prochlorococcus populations at the Eastern Mediterranean Sea.

From: Single-cell measurements and modelling reveal substantial organic carbon acquisition by Prochlorococcus

Fig. 1: Nutrient uptake of naturally occurring Prochlorococcus populations at the Eastern Mediterranean Sea.

a, Depth profiles of PAR, NO2 + NO3 and chlorophyll (Chl). b, Phytoplankton cell counts using flow cytometry. c, Relative abundance of different Prochlorococcus clades across the water column, determined by ITS sequencing (HLI denotes high-light-adapted clade I, HLII denotes high-light-adapted clade II, LLI denotes low-light-adapted clade I, LLII/III denotes low-light-adapted clades II and III, LLIV denotes low-light-adapted clade IV, LLVII denotes low-light-adapted clade VII, Syn denotes Synechococcus). d, Density plots of Prochlorococcus per-cell chlorophyll fluorescence (FL). Note the change in chlorophyll fluorescence (d) without a concomitant change in population structure (c) between 65 m and 100 m. Note also the presence of LL clades above 115 m and HL clades at 125 m (c) while a double population is observed only at 115 m (d). The circles in d represent the populations sorted and analysed by NanoSIMS, and are colour-coded as in e. e, Density plots of the ratios of C-specific C uptake rate (μC) to N-specific N uptake rate (μN) from NanoSIMS analysis of each sorted subpopulation from 115 m, the single population from 125 m, and lab cultures. The numbers of cells measured in each population are 45 (LL 115 m), 49 (HL 115 m), 55 (125 m) and 489 (lab culture). The scatter plots and gates used for these analyses are shown in Extended Data Fig. 1.

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