Figure 5: COG assigned proteins increased exclusively in Fe/P co-limitation mapped to Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways.

‘Cell size metabolism’ does not exist in KEGG pathways, but was added to acknowledge the cell size protein (Fig. 3a) exhibiting increased abundance in conjunction with these broad metabolic pathways under Fe/P co-limitation. Detected P and Fe transporter proteins are shown, indicating both Fe- and P-limitation, and italicized names are components affected by increased CO2 (see main text).