Fig. 4

Growth curve, biomass, and lipid productivity of WT and S4 mutant strain. a Growth curve obtained measuring absorption at 720 nm. b Daily biomass productivity expressed as g L⁻¹ day⁻¹. c Lipid accumulation per dry weight measured by Nile red staining in cells at the end of the growth curve. Error bars are reported as the standard deviation (n = 3). Significant different values are marked with ** as determined by unpaired two-sample t-test (n = 3, p < 0.01)