Fig. 1: NanoSIMS images showing temporal changes in isotopic enrichment in Crocosphaera under a dark:light cycle of 12:12 h. | Communications Biology

Fig. 1: NanoSIMS images showing temporal changes in isotopic enrichment in Crocosphaera under a dark:light cycle of 12:12 h.

From: Heterogeneous nitrogen fixation rates confer energetic advantage and expanded ecological niche of unicellular diazotroph populations

Fig. 1

Numerals and alphabets in each photo denote time in a photoperiod: 9D and 3 L indicate 9 h in the dark and 3 h in the light, respectively. The colored bars for 12C14N indicate the number of ions collected per pixel, the other colored bars indicate the ratio of 15N: 14N and 13C:12C with the scale factor of ×10,000. White arrows in 15N:14N at 11D show the cells with intensive 15N enrichment, blue arrow shows the cells with less 15N enrichment, pink arrows show 15N hotspots. Scale bars, 5 µm. 12C14N shows the baseline, from which labeling departs in lower panels; 15N:14N shows the fate of newly fixed 15N2, 13C:12C shows newly fixed 13C uptake.

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