Responses of soil enzymes to different heavy metals
نویسندگان
چکیده
Presence of heavy metals (HM) in agricultural soil is a major hazard to the soil-plant system. In the present study, soil samples (0-5 cm depth) were taken in order to determine the effects of heavy metal pollution on soil enzymes like dehydrogenase, alkaline phosphatase (APA), urease (UA) protease, cellulose, invertase, beta glucosidase and amylase. Results showed that Cadmium (Cd) significantly inhibited the four enzyme activities and Zinc (Zn) inhibited urease and calatase activities. Lead (Pb) was not significantly inhibitory than the other heavy metals for the four enzyme activities and was shown to have a protective role on calatase activity in the combined presence of Cd, Zn and Pb. Overall, all the heavy metals were found to have an inhibitory effect on the soil enzymatic activities. Hence our results suggested that enzymatic activities may be used as a sensitive indicator for assessing changes in soil environment quality.
منابع مشابه
Germination, Growth and Uptake of Heavy Metals in Contaminated Soils (Hordeum bulbosum L.)
The use of metal-accumulating plants to clean the contaminated soil with toxic metals is the most rapidly developing component of phytoremediation as an environmentally friendly technology. Overcoming harsh soil conditions and accelerating the recovery of degraded soils remain a worldwide restoration challenge. This study evaluated the effect of different concentrations of Pb, Zn, Cu and Fe on ...
متن کاملGrowth and Heavy Metals Uptake of Puccinellia distans (Jacq.) Parl
The use of plants to remediate contaminated soil has been the most rapidly developing component in environmental cleansing. Although total concentration of heavy metals in soil is used for regulatory review, it also is beneficial to assess the potential for ecosystem impact through a series of bioassays. One commonly used bioassay is seed germination. In current research study effect of contami...
متن کاملPerformance of purslane (Portulaca oleracea) in nickel and cadmium contaminated soil as a heavy metals-removing crop
Specific plants can remove heavy metals from the soil and contribute to pollution remediation in cropping systems. Determining the level of highest heavy metals that a super-accumulator crop can withstand without reducing its yield is important for management. The objective of this study was to investigate the heavy metal-removing capacity of purslane by studying different stress criteria and b...
متن کاملConcentration of Heavy Metals in Soil and Staple Crops and the Associated Health Risk
Background & Aims of the Study: The main objectives of the current research were (1) to study the extent of soil pollution by heavy metals (Ag, Cd, Cr, Cu, Mn, Ni, Pb, Zn, Ba and Li) in sampling locations (2) to investigate the extent of heavy metal pollution and soil to plant transfer of these elements in wheat and barley (3) to study the health risk of heavy metals via consum...
متن کاملPii: S0038-0717(00)00162-0
Heavy metal pollution presents a major hazard to the soil environment. Studies have shown that the activities of a variety of soil enzymes are inhibited by heavy metals. However, little information is available concerning the effect of heavy metals on the activity of enzymes immobilized by different soil constituents. The main objective of this work was to investigate the effects of copper on t...
متن کامل