8 research outputs found
Secretion and composition of nectar and the structure of perigonal nectaries in Fritillaria meleagris L. (Liliaceae)
AIR POLLUTION EFFECTS ON THE ACTIVITY OF ANTIOXIDANT ENZYMES IN NERIUM OLEANDER Â AND ROBINIA PSEUDO ACACIA Â PLANTS IN TEHRAN
The air pollution effects on the activity of antioxidant enzymes were
investigated on Nerium oleander and Robinia pseudo acacia in Tehran.
Considering the information obtained from the Department of the
Environment of Iran, Sorkh Hesar Park as well as South Azadi were
selected as two sampling sites representing the unpolluted and polluted
area respectively. A number of plant leave samples were collected from
both sampling sites simultaneously. The activity of plant enzymes
including peroxidase, catalase and ascorbate peroxidase was
investigated using spectrophotometric methods. A higher level of
peroxidase and catalase enzymes were measured in both plant samples
collected from polluted area. However, this higher level was only
statistically significant for the activity of peroxidase enzyme in
Robinia pseudo acacia plants compare of to the control group (p <
0.05). The lower level of ascorbate peroxidase was observed in Nerium
oleander plant leaves collected from the contaminated sampling site (p
< 0.05), but though, the activity of this enzyme in Robinia pseudo
acacia did not change significantly. The overall plant injury symptoms
found in this study demonstrated that both Nerium oleander and Robinia
pseudo acacia have a potential to be considered as effective
bioindicators to reflect the environmental air quality in polluted
areas