Effect of heavy metals and PAH on soil assessed via dehydrogenase assay

Irha, Natalya; Slet, Jörgen; Petersell, V.

doi:10.1016/s0160-4120(02)00124-1

Cited by 68 publications

(27 citation statements)

References 10 publications

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“…Moreover, Irha et al (2003) demonstrated that microorganisms are the most sensitive parameters for evaluating heavy metals toxicity. It was demonstrated that presence of heavy metals in soil decreased the indices of soil microbiological activity.…”

Section: Discussionmentioning

confidence: 99%

Potential of Plant Growth Promoting Traits by Bacteria Isolated from Heavy Metal Contaminated Soils

Kumar

Singh

et al. 2015

Bull Environ Contam Toxicol

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Rhizobacteria can enhance biomass production and heavy metal tolerance of plants under the stress environment. The aim of this study was to collect soil samples from different industrial sites followed by their heavy metal analysis. After performing the ICP-AES analysis of soil samples from seven different sites, bacterial strains were isolated from the soil samples of most polluted (heavy metal) site. Phylogenetic analysis of isolates based on 16S rDNA sequences showed that the isolates belonged to four species: Bacillus thuringiensis, Azotobacter chroococcum, Paenibacillus ehimensis and Pseudomonas pseudoalcaligenes. Plant growth promoting activities; siderophore production, indole acetic acid production, HCN production, and phosphate solubilisation were assayed in vitro, and statistically analysis done by using ANOVA analysis and Tukey's Honestly Significant Difference test (p ≤ 0.05). Plant growth-promoting characteristics of isolated strains were higher compared to the control Pseudomonas fluorescens (NICM 5096). In vitro study was performed to check resistance against two heavy metals of isolates. It was observed that isolated bacterial strains have higher heavy metal resistance as compared to control E. coli (NICM 2563). These isolates may cause pathogenic effects, so to avoid this risk, their antibacterial susceptibility was checked against eight antibiotics. Among the eight antibiotics, Ciprofloxacin-1 has shown higher inhibition against all the isolated bacterial strains.

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Section: Discussionmentioning

confidence: 99%

Potential of Plant Growth Promoting Traits by Bacteria Isolated from Heavy Metal Contaminated Soils

Kumar

Singh

et al. 2015

Bull Environ Contam Toxicol

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“…Moreover, we observed strong positive correlations (p<0.01) between the activity of these enzymes and the total PAHs (Table 4). Several studies have demonstrated that DHA is among the most sensitive parameters for evaluation of hydrocarbons toxicity and stress (Irha et al 2003, Gianfreda et al 2005. Turgay et al (2010) observed that the decrease in the content of hydrocarbons resulted in an increase of DHA over time during the bioremediation process of soil contaminated with petroleum hydrocarbons.…”

Section: Enzyme Activitymentioning

confidence: 99%

Activity and functional diversity of microbial communities in long-term hydrocarbon and heavy metal contaminated soils

Markowicz¹,

Płaza²,

Piotrowska‐Seget³

2016

Archives of Environmental Protection

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Abstract:The impacts of long-term polycyclic aromatic hydrocarbons (PAHs) and heavy metal pollution on soil microbial communities functioning were studied in soils taken from an old coke plant. The concentrations of PAHs in the tested soils ranged from 171 to 2137 mg kg -1 . From the group of tested heavy metals, concentrations of lead were found to be the highest, ranging from 57 to 3478 mg kg -1 , while zinc concentrations varied from 247 to 704 mg kg -1 and nickel from 10 to 666 mg kg -1. High dehydrogenase, acid and alkaline phosphatase activities were observed in the most contaminated soil. This may indicate bacterial adaptation to long-term heavy metal and hydrocarbon contamination. However, the Community Level Physiological Profi les (CLPPs) analysis showed that the microbial functional diversity was reduced and infl uenced to a higher extent by some metals (Pb, Ni), moisture and conductivity than by PAHs.

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“…In a soil environment, the combined effect of pollutants has attracted much attention in recent decades (Bå å th, 1989;Irha, Slet, & Petersell, 2003). The effect of combined pollution depends on the constituents of the mixture and may vary significantly (Jensen & Sverdrup, 2002).…”

Section: Introductionmentioning

confidence: 99%

Effect of cadmium alone and in combination with butachlor on soil enzymes

Wang

Ding

et al. 2007

Environ Geochem Health

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The ecological toxicity of cadmium (Cd, 10 mg kg(-1 )of dry weight soil) and butachlor (10, 50 and100 mg kg(-1 )of dry weight soil) in both their single and combined effects on soil urease and phosphatase was studied after 1, 3, 7, 14, 21 and 28 days exposure under controlled conditions in paddy and phaeozem soils. The results showed that Cd reduced the activities of urease and phosphatase at early incubation time (1-7 days), while the reduction almost disappeared at the end of the incubation. The effect of Cd on phosphatase was more pronounced than that on urease. The activities of urease and phosphatase were reduced by butachlor, while urease activity was significantly (P < 0.05 or P < 0.01) improved when the concentrations of butachlor were 10 and 50 mg kg(-1) at the end of the incubation. When Cd (10 mg kg(-1)) was combined with butachlor (50 and 100 mg kg(-1)), the activities of urease and phosphatase became lower than without combination at early incubation time, which indicated that the toxicity of Cd significantly increased (P < 0.05 or P < 0.01). However, when Cd (10 mg kg(-1)) was combined with butachlor (10 mg kg(-1)), the activities of urease and phosphatase became higher than those without combination at the end of the incubation, which indicated that the toxicity of Cd decreased. It was indicated that the combined effects depended largely on the incubation time and the concentration ratio of Cd and butachlor. In addition, it was showed that the combined effects of butachlor and Cd appeared different in paddy from phaeozem, which may be related to the different properties of these soils.

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Effect of heavy metals and PAH on soil assessed via dehydrogenase assay

Cited by 68 publications

References 10 publications

Potential of Plant Growth Promoting Traits by Bacteria Isolated from Heavy Metal Contaminated Soils

Potential of Plant Growth Promoting Traits by Bacteria Isolated from Heavy Metal Contaminated Soils

Activity and functional diversity of microbial communities in long-term hydrocarbon and heavy metal contaminated soils

Effect of cadmium alone and in combination with butachlor on soil enzymes

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