Transformation of heavy metal fractions on soil urease and nitrate reductase activities in copper and selenium co-contaminated soil

Hu, Bin; Liang, Dong; Liu, Juanjuan; Lei, Lanjie; Yu, Dasong

doi:10.1016/j.ecoenv.2014.08.007

Cited by 86 publications

(32 citation statements)

References 36 publications

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“…Furthermore, we found that contaminated soils caused a decreased trend of urease activity with experimental time prolonging, whereas increased trend of catalase and phosphatase activity. Previously, urease activity can be inhibited by heavy metal pollutions (Cu and Se) (Hu et al 2014), while catalase and phosphatase can be stimulated by organic pollutants (Wang et al 2013;Zhan et al 2010). Thus, the different change trend of three enzymes activity may be due to the two kinds of contaminants (heavy metal and PCBs) in soils.…”

Section: Discussionmentioning

confidence: 97%

Response of CaCl2-extractable heavy metals, polychlorinated biphenyls, and microbial communities to biochar amendment in naturally contaminated soils

et al. 2015

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Purpose Biochar can be used to reduce the bioavailability and leachability of heavy metals, as well as organic pollutants in soils through adsorption and other physicochemical reactions. The objective of the study was to determine the response of microbial communities to biochar amendment and its influence on heavy metal mobility and PCBs (PCB52, 44, 101, 149, 118, 153, 138, 180, 170, and 194) concentration in application of biochar as soil amendment. Materials and methods A pot (macrocosm) incubation experiment was carried out with different biochar amendment (0, 3, and 6 % w/w) for 112 days. The CaCl 2 -extractable concentration of metals, microbial activities, and bacterial community were evaluated during the incubation period. Results and discussion The concentrations of 0.01 M CaCl 2 -extractable metals decreased (p>0.05) by 12.7 and 20.5 % for Cu, 5.0 and 15.6 % for Zn, 0.2 and 0.5 % for Pb, and 1.1 and 8.9 % for Cd, in the presence of 3 and 6 % of biochar, respectively, following 1 day of incubation. Meanwhile, the total PCB concentrations decreased from 1.23 mg kg −1 at 1 day to 0.24 mg kg −1 at 112 days after 6 % biochar addition, representing a more than 60 % decrease relative to untreated soil. It was also found out that biochar addition increased the biological activities of catalase, phosphatase, and urease activity as compared with the controls at the same time point. Importantly, the Shannon diversity index of bacteria in control soils was 3.41, whereas it was 3.69 and 3.88 in soils treated with 3 and 6 % biochar soil. In particular, an increase in the number of populations with the putative ability to absorb PCB was noted in the biochar-amended soils. Conclusions The application of biochar to contaminated soils decreased the concentrations of heavy metals and PCBs. Application of biochar stimulated Proteobacteria and Bacteroides, which may function to absorb soil PCB and alleviate their toxicity.

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Section: Discussionmentioning

confidence: 97%

Response of CaCl2-extractable heavy metals, polychlorinated biphenyls, and microbial communities to biochar amendment in naturally contaminated soils

et al. 2015

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“…Anthropogenic activities (such as application of sewage sludge, mine slags, industrial wastewaters, fungicides, and fertilizers) can lead to the elevation of copper to toxic levels in agricultural soils (Wang, Hua, & Ma, 2012;Hu et al, 2014;Anjum et al, 2015). Soluble and exchangeable metals such as copper are often considered as being the most potentially toxic in soil (Yang et al, 2006;Hu et al, 2014) and copper remediation from this soil fraction is therefore highly desired.…”

Section: Coppermentioning

confidence: 99%

“…Soluble and exchangeable metals such as copper are often considered as being the most potentially toxic in soil (Yang et al, 2006;Hu et al, 2014) and copper remediation from this soil fraction is therefore highly desired.…”

Section: Coppermentioning

confidence: 99%

Microbially-induced Carbonate Precipitation for Immobilization of Toxic Metals

Kumari

Qian

Pan

et al. 2016

Advances in Applied Microbiology

155

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“…The negative effects of their actions result mainly from the interaction of the functional groups of molecules belonging to the cell, in particular proteins (SH groups) and polynucleotides [3]. In wooden plants inhibition of roots growth [3,4], reduction in biological membrane integrity and distortion of the key enzymes, such as nitrate reductase were observed [5]. The effect of this may be weaker growth and development of plants, and even their death.…”

Section: Introductionmentioning

confidence: 99%

Adaptation of Selected Ectomycorrhizal Fungi to Increased Concentration of Cadmium and Lead

Bandurska

Krupa

Berdowska

et al. 2016

Ecological Chemistry and Engineering S

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Plants together with water and minerals actively take from the soil heavy metals such as cadmium and lead. The negative role of ions of these metals on plant growth and development depends not only on their concentration in the soil, but also on a number of factors that may affect the transport of minerals from the soil to the roots. The harmful effects of xenobiotics getting from the soil to the plants are limited by the organic compounds contained in the soil, soil structure and pH. Particularly noteworthy are biotic factors, such as bacteria and fungi which greatly limit the translocation of heavy metals. Stream of new scientific reports show that the symbiotic combination of fungi with plant roots so called mycorrhizae is a factor that may be important in reducing the impact of soil contamination by heavy metals. Mycorrhiza by filtering solutions of water and mineral salts stop a considerable amount of heavy metals in the internal mycelium or on its surface. It was proved that plants with properly formed mycorrhiza grow better in hard to renew lands, such as salty, sterile soils contaminated with industrial waste. Questions to which answer was sought in this study are: 1) whether mycorrhizal fungi for many years growing in the contaminated areas have managed to adapt to these adverse conditions and 2) do the same species derived from clean areas are less resistant to contamination by heavy metals? Stated problems tried to be solved based on the fruiting bodies of fungi collected from ectomycorrhizal fungi picked from the areas contaminated by industrial emissions and areas free of contamination. The interaction of cadmium and lead ions on the growth of mycelium was examined by plate method and binding of heavy metals in fruiting structures of fungi were done by colorimetric method with use of methylene blue. It has been shown that the fungal resistance, even of the same species, to high concentration of heavy metals varies depending on the origin of symbiont. Isolated fungi from contaminated areas are better adapted to high concentrations of xenobiotics. Ability to bind cadmium and lead to fruiting bodies of fungi varies.

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Transformation of heavy metal fractions on soil urease and nitrate reductase activities in copper and selenium co-contaminated soil

Cited by 86 publications

References 36 publications

Response of CaCl2-extractable heavy metals, polychlorinated biphenyls, and microbial communities to biochar amendment in naturally contaminated soils

Response of CaCl2-extractable heavy metals, polychlorinated biphenyls, and microbial communities to biochar amendment in naturally contaminated soils

Microbially-induced Carbonate Precipitation for Immobilization of Toxic Metals

Adaptation of Selected Ectomycorrhizal Fungi to Increased Concentration of Cadmium and Lead

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