Degradation capacity of a 1,2,4-trichlorobenzene mineralizing microbial community for traces of organochlorine pesticides

Kengara, Fredrick Orori; Schramm, Karl‐Werner; Doerfler, Ulrike; Munch, Jean Charles; Henkelmann, Bernhard; Welzl, Gerhard; Bernhoeft, Silke; Hense, Burkhard A.; Schroll, Reiner

doi:10.1016/j.scitotenv.2010.04.009

Cited by 14 publications

(4 citation statements)

References 33 publications

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“…Sicbaldi et al [ 13 ] studied the potential of the soybean plants testing hydrophobic compounds with log K ow values between 2 and 3. The compounds are translocated most efficiently within the vegetation, and the translocation efficiency decreased for compounds with higher log K ow values [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

Evaluation ofRicinus communisL. for the Phytoremediation of Polluted Soil with Organochlorine Pesticides

Rissato

Galhiane

Fernandes

et al. 2015

BioMed Research International

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Phytoremediation is an attractive alternative to conventional treatments of soil due to advantages such as low cost, large application areas, and the possibility of in situ treatment. This study presents the assessment of phytoremediation processes conducted under controlled experimental conditions to evaluate the ability of Ricinus communis L., tropical plant species, to promote the degradation of 15 persistent organic pollutants (POPs), in a 66-day period. The contaminants tested were hexachlorocyclohexane (HCH), DDT, heptachlor, aldrin, and others. Measurements made in rhizosphere soil indicate that the roots of the studied species reduce the concentration of pesticides. Results obtained during this study indicated that the higher the hydrophobicity of the organic compound and its molecular interaction with soil or root matrix the greater its tendency to concentrate in root tissues and the research showed the following trend: HCHs < diclofop-methyl < chlorpyrifos < methoxychlor < heptachlor epoxide < endrin < o,p′-DDE < heptachlor < dieldrin < aldrin < o,p′-DDT < p,p′-DDT by increasing order of log K ow values. The experimental results confirm the importance of vegetation in removing pollutants, obtaining remediation from 25% to 70%, and demonstrated that Ricinus communis L. can be used for the phytoremediation of such compounds.

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Section: Introductionmentioning

confidence: 99%

Evaluation ofRicinus communisL. for the Phytoremediation of Polluted Soil with Organochlorine Pesticides

Rissato

Galhiane

Fernandes

et al. 2015

BioMed Research International

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“…Because their primary metabolism, fungi are able to secrete enzymes that transform complex macromolecules into smaller compounds and then use them for their growth and metabolism (Rabinovich et al 2004, Singh & Singh 2014. Kengara et al (2010) proposed that the lack of native contaminant degrading microorganisms in an ecosystem can be overcome by the inoculation of foreign microorganisms in the same system. This strategy is usually described as "bioaugmentation" and it involves the inoculation of a strain or a microbial consortium with degradation capacity in the contaminated system (Wang et al 2010).…”

Section: Discussionmentioning

confidence: 99%

Native mycota in agricultural soils exposed to pesticides and Aspergillus oryzae tolerance to chlorpyrifos in microcosms assays

Carranza¹

2017

CREAM

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Magnoli CE -Native mycota in agricultural soils exposed to pesticides and Aspergillus oryzae tolerance to chlorpyrifos in microcosms assays. Current Research in Environmental & Applied Mycology 7(3), 236-248, Doi 10.5943/cream/7/3/10 AbstractChlorpyrifos (CPF) constitutes a class of older and riskier pesticides, with more than 50 years of use. After pesticide application, a low percentage reaches the target and the rest remain in the environment. Due to this, bioremediation strategies are being increasingly studied. The aims of the present study were to determine the competitiveness and the permanence of a non-toxigenic, CPFdegrading A. oryzae (AM 1) strain in agricultural soil microcosms. These microcosms were contaminated with commercial formulation of CPF (10, 20 and 50 mM) and conditioned at two water holding capacity (70 and 30 WHC). In addition, Aspergillus section Flavi counts of soils of three localities of southern Córdoba Province were evaluated, due to these soils were used to prepare the microcosms. In the microcosm's assays, together with the native mycota, A. oryzae was isolated from all the treatments and conditions assayed. Thus this strain was able to tolerate the different doses of CPF tested. Regarding the native mycota, Aspergillus sp., Trichoderma sp., Penicillium sp., Cladosporium sp. and Fusarium sp. were the most frequent genera isolated from the microcosms. The CPF treatments influenced in different ways the counts of the most frequent genera isolated. This study allowed knowing the in situ survival, under optimal and not optimal humidity conditions, of a CPF-degrading fungal strain in presence of the native mycota. These results are very important because the permanence in the environment of a potentially bioremediation agent is one of the main characteristic that must be evaluated.

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“…US EPA method 3540 Soxhlet extraction for the extraction of pesticide residues from sediment samples was applied (US EPA, 2002;Abong'o 2014;Osoro et al, 2016). The elute was then concentrated to 1ml followed by GC analysis (Kengara et al, 2010).…”

Section: Sample Extraction Proceduresmentioning

confidence: 99%

Occurrence and distribution of Organochlorine Pesticide Residues in Water and Sediments of Earthen Fish Ponds in South Western Kenya

Nyaundi

Getabu

James

et al. 2021

UJAS

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Persistent organochlorine residues in the environment are a threat to ecological health of aquatic organisms and pose a health risk to both animals and human consumers. Organochlorine pesticides were determined in water and sediments collected during wet and dry season from selected riverine and earthen fish pond sites in high altitude catchment areas within Kuja River (Kenya) between August 2016–May, 2017. Analysis of DDT and metabolites, Hexachlorocyclohexanes (HCHs) isomers and cyclodienes using a gas chromatograph (GC), and electron capture detector (ECD), confirmed using GC - Mass Spectrometry (MS). Mean (± Standard error) results of DDTs, cyclodienes and HCHs in pond waters were:- below detection level (BDL) to 0.27±0.03µg/L, BDL to 0.11±0.00µg/L, and 4.39±1.01µg/L respectively; and BDL to 0.23±0.01µg/L, 1.20±0.005µg/L, and 1.71±0.02µg/L in river water respectively. Sediment mean OCPs contents were significantly (p<0.05) higher for Dieldrin (3.043±0.43µg/kg), Endrin (2.56±0.460µg/kg), Heptachlor (3.61±0.02µg/kg) DDT (2.97±1.32µg/kg), Endosulfan (6.31.27±1.051µg/kg), Methoxychlor (2.15±1.641µg/kg) and Lindane (2.96±1.32µg/kg), respectively. A longitudinal spatial distribution pattern was noted for both water and sediment OCPs contents, demonstrating that cyclodienes are predominant contaminants in point and non-point sources in water courses. The study recommends continuous monitoring of OCPs in upstream catchment areas for informed management and policy decisions on pesticide use. Keywords: Kuja-Migori River; Organic contaminants; Organochlorine Pesticide.

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Degradation capacity of a 1,2,4-trichlorobenzene mineralizing microbial community for traces of organochlorine pesticides

Cited by 14 publications

References 33 publications

Evaluation ofRicinus communisL. for the Phytoremediation of Polluted Soil with Organochlorine Pesticides

Evaluation ofRicinus communisL. for the Phytoremediation of Polluted Soil with Organochlorine Pesticides

Native mycota in agricultural soils exposed to pesticides and Aspergillus oryzae tolerance to chlorpyrifos in microcosms assays

Occurrence and distribution of Organochlorine Pesticide Residues in Water and Sediments of Earthen Fish Ponds in South Western Kenya

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