Figure 4: Log2-fold changes of photosystem proteins and hierarchical clustering of treatments using photosystem proteins or Fe/P complement proteins.

(a) Shown is a bar graph of log2-fold changes of photosystem proteins in the 750-Fe and 750-Fe/P treatments, respectively. The symbols denote statistical significance relative to either the replete 380 (square) or both the replete 380 and 750 (hexagon). The striped fill denotes statistically significant increases in abundance relative to the replete condition(s) and significant decreases for the black fills. (b) Hierarchical clustering of treatments coloured by nutrient using Bray–Curtis dissimilarities calculated from photosystem protein abundances in a. (c) Hierarchical clustering of treatments with branches coloured by nutrient of Bray–Curtis dissimilarities calculated from protein abundances exclusively responding to Fe/P co-limitation (Fe/P protein complement). Heatmap scale bars represent individual protein abundances standardized across treatments.