Figure 1From: Lipid accumulation and biosynthesis genes response of the oleaginous Chlorella pyrenoidosaunder three nutrition stressorsGrowth and photosynthetic activity of Chlorella pyrenoidosa under different stress conditions. (a) Growth, (b) chlorophyll content, (c) variable-to-maximum fluorescence ratio (Fv/Fm) and (d) NPQ value. N, nitrogen; P, phosphorus; Fe, iron.Back to article page