Fig. 2: Biochemical characteristics of V.spinulosa Yan leaves.

a SOD enzyme activity b MDA enzyme content. SOD and MDA represent activity of superoxide dismutase and content of malondialdehyde, respectively. NW, AW, IW, and CK represent the natural lake water group, simulated lake water + Microcystis aeruginosa group, simulated lake water + kaolin group, and simulated lake water group, respectively. NWL, AWL, IWL, and CKL are the corresponding groups with underwater light source.