A Photoperiod-Regulating Gene CONSTANS Is Correlated to Lipid Biosynthesis in Chlamydomonas reinhardtii

Figure 2

Microscopic observations of C. reinhardtii under LD or SD conditions after four days of cultivation. Algal cell was observed using a Zeiss fluorescence microscope (10 25) after staining with Nile red dye. Orange fluorescence indicates that the oil droplet is mainly composed of TAG. LD conditions (16 h day time and 8 h dark time); SD conditions (8 h day time and 16 h dark time). HSM, cells cultivated in the HSM medium; HSM-S, cells cultivated in the S-free HSM medium; and HSM-P, cells grown in the P-free HSM medium. The scale bar indicated in the figure is 3 μm.