These changes represent a massive shift in the stoichiometry of the biomass. The Redfield ratio describes the typical C:N:P balance of oceanic algal biomass and is typically reported as 106:16:1. Our wildtype culture grown in high phosphorus fed batch shifts this ratio to about 100:10:4, increasing relative phosphorus concentration at the expense of nitrogen. The PST+ strain shifts the ratio even further to roughly 100:13:62, highlighting the scale of elemental rewiring in this strain.