Fig. 4From: Chlorophyll as key indicator to evaluate astaxanthin accumulation ability of Haematococcus pluvialisThe metabolic network between chlorophyll metabolism and astaxanthin metabolism inH. pluvialis. Green, red, and yellow background represent chlorophyll metabolism, astaxanthin metabolism, and lutein metabolism, respectively. 1235 (up) and 1246 (down) represent control group and treatment group, respectively (n = 2)Back to article page