The following characteristics were observed in the 30 mg L1 Al
treatments: the cellular configurations remained intact but the size
of the cells appeared to swell; the nucleolus disaggregated, but the
karyotheca maintained its structure; vacuole inclusions were fewer
than those in the check; the mitochondria was irregular in shape
and swollen; the cristae system was a little bit distorted. Fig. 7
showed the breakdown of the inner membrane of the mitochondria
as well as its erupted membrane. In addition, plasmolysis was
observed in the cells of both Z.2 and Z.3 in the 30 mg L1 Al
treatment, but the damages were not severe.