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Series of pot experiments were performed to determine the effects of cadmium in soil on chlorophyll content, CAT, POD and SOD activities in Brassica juncea. The results indicated that tolerance of Brassica juncea for Cd is stronger. It is able to burgeon and grow all right in the soil added Cd from mg·kg−1 to200mg·kg−1. The biomass of Brassica juncea takes on principle of parabola changes with Cd...
Sand culture was used to investigated the Cd and Pb phyto extraction by sunflower, and changes of organic acids including oxalic acids, citric acids and tartaric acids. The results showed that bioconcentration factors (BCF) of Cd or Pb increased with time and decreased with concentrations, the highest Cd-BCF and Pb-BCF appeared in Cd5 (21) and Pb50(7.95), respectively. The contents of oxalic acids...
39 indigenous plant species in 18 families were collected and investigated in four heavy-metal polluted sites. The tolerance and hyptoextraction characteristics of them to Cd, Pb, Cu, Zn and As were examined. In field survey, Bidens bipinnata, Artemisia dubia, Polygonum lapatuifolium, Chenopodium ambrosioides and Solanum nigrum showed to concentrate remarkable heavy metal in shoots. In the further...
In order to alleviate pollution of urban sewage river sediment, planting experiment is conducted to study phytoremediation of Lolium Perenne to heavy metal pollution in the circumstance of adding hydrogen peroxide before planting. Results show that after adding hydrogen peroxide before planting Lolium Perenne in sediment the accumulation number of heavy metal in root is more than the one in shoot...
Heavy metals contamination is a major environmental issue, and phytoremediation is a promising, environmentally friendly alternative to conventional cleanup techniques for heavy metal contaminated sites. In this study, the synergistic enhance effects of melanin with two endogenous antioxidants, viz., glutathione (GSH) and ascorbic acid (SA), on the enhancement of the toxicity tolerance of Cd on Sedum...
Soil pollution is a worldwide problem. Both inorganic and persistent organic pollutants (POPs) possess high toxicity and long-term persistence. Biosurfactant based remediation technologies for contaminated soil are of increasing importance recently, and they have been demonstrated to be effective in uptaking both heavy metals such as Cd, Pb, Zn, Cu, and organic pollutants like hydrophobic organic...
In this paper, flue-cured tobacco cultivar (Nicotiana tabacum L. K 326) was selected to explored responses of flue-cured tobacco plants to different concentration of lead (Pb) or cadmium (Cd). The plants were grown in nutrient solution in lab under the controlled condition. Research showed dry weights of each organ and whole plant and values of botany characters and Chlorophyll contents of upper leaf...
A pot experiment was conducted in order to investigate the growth of sugarcane (Saccharum officinarum L.) under cadmium (Cd) contamination and its uptake and Cd accumulation. The results showed that with increase of Cd concentration, the diameter and burl length of stems, and the biomass of sugarcane decreased significantly. Cd concentration in soil had obviously influenced the ground-breaking time...
A pot incubation study was conducted to investigate the feasibility of using Daucus carota var. sativa (carrot) and Brassica juncea var. multiceps (potherb mustard) for phytoremediation of Cd-contaminated soils and evaluateing the effects of chelating agents (EDTA, EGTA, DTPA and citric acid) application on metal uptake by both plants. It was shown that, the content of water soluble and exchangeable...
The present paper is aimed at investigating the phytoremediation potential of pot-growing sugarcane (Saccharum officinarum L.) to lead (Pb) in soil. The following metal treatments in concentrations were used: 0, 100, 250, 500, and 1000 mg kg-1 Pb DW in soil. The results showed that, sugarcanes, except for the treatment of Pb 1000 mg kg-1, did not show any macro- toxicity. When Pb concentration in...
Phytoremediation is a promising tool in removing pollutants from the environment or in rendering them harmless. Some previous reports showed that Fe deficiency in dicots induced the stimulated accumulation of a number of micronutrient metals other than Fe. The objective of this research was to determine the effect of Fe deficiency on the uptake of cadmium (Cd) by tomato (Lycopersicon.EsculentumMill....
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