The Effect of Cadmium on Mycelial Ultrastructure of Agaricus blazei Murill
The effects of Cd2+ with different concentrations on the structure of cell wall,mitochondrion and starch granule were studied by transmission electron microscope in the paper.The results showed that there were some mild changes of cell ultrastructure including light damage cell wall,aggrandizement of vacuole,reduction of inclusion,increase of the number of mitochondrion when Cd2+ content of culture medium was lower than 7 mg/L.The damages of cell ultrastructure became worse,including the breakage of cell wall and membrane,reduction of mitochondrion,mistiness or crista,membrane and starch grain brims when Cd2+ content was higher than 7 mg/L.Cells were completely autolyzed when Cd2+ content was higher than 42 mg/L.