Effects of amendments on the uptake and distribution of DDT in Cucurbita pepo ssp pepo plants

Åslund, Melissa L. Whitfield; Lunney, Alissa I.; Rutter, Allison; Zeeb, Barbara A.

doi:10.1016/j.envpol.2009.08.030

Cited by 31 publications

(14 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The DDX residual level of the trial field ranged between 40 and 50 µg/kg in dry matter which was comparable to the levels detected in a previously published study [27]. The three sections, control, conventional and organic, were not statistically differentiable (P > 0.05).…”

Section: Resultssupporting

confidence: 79%

“…These plants are used as a vehicle to deplete contaminated soils by continuous extraction over a period of several years. A number of studies [6,27,28,5], especially on the phytoremediation of DDX contaminated soils have been published over the last years, which demonstrated that plants from the genus Cucurbita and Cucumis generally show a high tendency to accumulate DDX and other POPs from the soil. It was found that Cucurbitacea secrete root exudates with emulsifying properties, which led to higher accumulation rates [29,30].…”

Section: Introductionmentioning

confidence: 99%

“…It was found that Cucurbitacea secrete root exudates with emulsifying properties, which led to higher accumulation rates [29,30]. Most of these studies focused either on the identification of the most efficient cultivar [27,31,32] or on how to influence accumulation rates by adding organic matter, such as peat, potting soil or activated carbon [27,33]. In particular, Cucurbita pepo has been described as a high accumulation cultivar for DDX in numerous studies [32,28,6,34,35,31,36,[36][37][38]27].…”

Section: Introductionmentioning

confidence: 99%

“…Agnello et al [23] and Mitton et al [47] observed an increased degradability of lipophilic contaminants by microorganisms in the rhizosphere of alfalfa and willow plants after a soil treatment with Tween 80 in combination with citric acid, which could be interpreted as an effect of an increased mobility in the water phase. Whitfield Aslund et al [27] assumed that there is no direct correlation between the level of DDX in soil and the accumulated level of DDX in roots, but rather that the content of organic carbon in soil is a key driver. This is confirmed by Paul et al [5], who demonstrated that the highest accumulation rates were observed on the soil with the lowest contamination levels, while there was no increase in the uptake from higher contaminated soil.…”

mentioning

confidence: 99%

See 3 more Smart Citations

Modern Agrochemicals Influence Bioaccumulation of Incurred DDT Soil Residues in Pumpkins – Residue Risk or a Chance for Phytoremediation?

2018

International Journal of Research in Environmental Science

View full text Add to dashboard Cite

Due to the high persistence of DDT and its metabolites DDE (1-chlor-4-(2, 2-dichlorphenyl-1(4chlorphenyl) ethenyl) benzene) and DDD (1-chlor-4-(2,2-dichlor-1-(4-chlorphenyl) ethyl) benzol) (-DDX‖) against microbial and chemical degradation, still distinct quantities of DDX are found in many soils all over the world [2-5]. The main hot spots are found in Asia [2,3], America [4,5] and southern Africa, while levels in Western Europe [6,7] are comparably low. In combination with the highly lipophilic character (log K ow DDT = 6,91 [8]), DDX remain adsorbed mainly to soil organic matter and therefore, relatively static in upper soil layers. It is however known that lipophilic contaminants adsorbed to the dissolved organic carbon (DOC) fraction of the soil show an increased water solubility and therefore, mobility. This mobility may be significantly influenced by the application of surfactants, which was demonstrated in a number of studies [9-15], where surfactant/ water mixtures were directly applied to soil samples or used to extract soils. Such mixtures are commercially used for the removal of non-aqueous phase liquids (NAPLs) [16] from highlycontaminated soils, e.g. resulting from oil leakages. This process is commonly performed by the Abstract: Although banned more than 50 years ago, residues of first generation organochlorine pesticide residues, such as DDT are still found in agricultural soils all over the world. Phytoremediation is a potential remediation strategy, using plants to remove these residues from the soils. One limiting factor is the low mobility and bioavailability of lipophilic compounds for plants. Soil mobility can be significantly increased by the application of surfactants to the soils. Agrochemicals, in particular crop protection formulations commonly contain major amounts of surfactants as adjuvants, a fact which so far has not been considered an influencing factor for the mobilization of organochlorine contaminants such as DDT. This study evaluated the influence of commonly applied agrochemical products on the bioavailability of DDT and its metabolites in pumpkins in an open-field trial. To compare different typically used products, organic farming pesticides were compared against conventional formulations.

show abstract

Section: Resultssupporting

confidence: 79%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Modern Agrochemicals Influence Bioaccumulation of Incurred DDT Soil Residues in Pumpkins – Residue Risk or a Chance for Phytoremediation?

2018

International Journal of Research in Environmental Science

View full text Add to dashboard Cite

show abstract

“…Phytoextraction of pesticides has mainly focused on food crops e.g. members of the genus Cucurbita known to extract from soil chlordane and DDT (Whitfield Aslund et al, 2010) or dieldrin and endrin (Otani & Seike, 2006). Therefore, it would be very interesting to screen non-food crops and other wild species for phytoremediation.…”

Section: Phytoremediationmentioning

confidence: 99%

Advanced technologies for the remediation of pesticide-contaminated soils

Morillo

Villaverde

2017

Science of The Total Environment

326

113

View full text Add to dashboard Cite

The occurrence of pesticides in soil has become a highly significant environmental problem, which has been increased by the vast use of pesticides worldwide and the absence of remediation technologies that have been tested at full-scale. The aim of this review is to give an overview on technologies really studied and/or developed during the last years for remediation of soils contaminated by pesticides. Depending on the nature of the decontamination process, these techniques have been included into three categories: containment-immobilization, separation or destruction. The review includes some considerations about the status of emerging technologies as well as their advantages, limitations, and pesticides treated. In most cases, emerging technologies, such as those based on oxidation-reduction or bioremediation, may be incorporated into existing technologies to improve their performance or overcome limitations. Research and development actions are still needed for emerging technologies to bring them for full-scale implementation.

show abstract

Application of Endophytic Bacteria to Reduce Persistent Organic Pollutants Contamination in Plants

Zhu

Liu

et al. 2013

CLEAN Soil Air Water

View full text Add to dashboard Cite

Persistent organic pollutants (POPs) accumulation in plants poses a risk to human health. POPs can be transported to plants through soil and air by abiotic or biotic processes. Their transport mechanisms in plants include symplastic and apoplastic processes, depending on the POP physicochemical properties and the vegetation species and growth stage. POPs with higher log octanol–water partition coefficient (Kow) values were absorbed more easily than those with lower logKow values. Specific endophytic bacteria showed increased expression of specific genes, more efficient degradation of organic contaminants, and the ability to degrade and reduce organic contaminants in host‐plant tissues. Several POP‐degrading endophytic bacteria were isolated from plants grown in POP‐contaminated soils and then inoculated successfully into plants. They expressed the genes encoding enzymes in the POP degradation pathways and reduced phytotoxicity and the amount of POP present in plant tissues. Thus, plant colonization by endophytic bacteria can be applied to degrading and reducing the concentration of POPs in plants.

show abstract

Effects of amendments on the uptake and distribution of DDT in Cucurbita pepo ssp pepo plants

Cited by 31 publications

References 20 publications

Modern Agrochemicals Influence Bioaccumulation of Incurred DDT Soil Residues in Pumpkins – Residue Risk or a Chance for Phytoremediation?

Modern Agrochemicals Influence Bioaccumulation of Incurred DDT Soil Residues in Pumpkins – Residue Risk or a Chance for Phytoremediation?

Advanced technologies for the remediation of pesticide-contaminated soils

Application of Endophytic Bacteria to Reduce Persistent Organic Pollutants Contamination in Plants

Contact Info

Product

Resources

About