Fig. 4
Trait values for cell biomass and ARA concentration of P. purpureum. The traits are tmax, the maximum tolerance dosage, pmax, the maximum potential dosage, μ, the mean safe dosage, and σ, the breadth of the mean safe dosage. a–c The trait values in terms of cell biomass versus a Glucose, b Sodium acetate, and c Glycerol. d, e The trait values in terms of ARA concentration versus d Sodium acetate and e Glycerol