The influence of EDDS and EDTA on the uptake of heavy metals of Cd and Cu from soil with tobacco Nicotiana tabacum

Evangelou, Michael W.H.; Bauer, Uwe; Ebel, Mathias; Schäffer, Andreas

doi:10.1016/j.chemosphere.2006.12.058

Cited by 116 publications

(57 citation statements)

References 40 publications

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“…They are listed in descending order from most to least as follows: roots [ stems [ leaves. This finding is consistent with those of other studies (Evangelou et al 2007). Researchers also found similar results while investigating the metal accumulation in wetlands macrophytes .…”

Section: Reedssupporting

confidence: 82%

“…Demonstrated visible symptoms, such as necrosis and chlorosis, were detected for EDDS concentrations of 3.125 mmol/kg and EDTA concentrations of 12.5 mmol/kg (Evangelou et al 2007). CA is carboxylic acid exuded by plant roots and is commonly found in the rhizosphere where organic acids have the potential to enhance metal mobility in soil profiles by reducing soil pH and forming complexes with heavy metals.…”

Section: Zn Sequential Extraction Results Of Soilmentioning

confidence: 99%

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Chelator-enhanced phytoextraction of copper and zinc by sunflower, Chinese cabbage, cattails and reeds

Yeh

Lin

et al. 2014

Int. J. Environ. Sci. Technol.

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The phytoextraction of copper and zinc assisted by the chelators such as ethylene diamine tetraacetic acid, diethylene triamino pentaacetic acid, ethylene diamine disuccinate and citric acid into sunflowers (Hh can act as effective cation exchangers. The negatively charged chelator complexes prevented binding to the cell walls of the roots and allowed complexes to enter the cells. Organic content contains fewer soil nutrients and has fewer negatively charged functional groups, such as carboxical, phenolical and hydroxyl; these adsorb negative free metal cations and reduce metal mobility, leading to less plant uptake. Regardless of different soils' varying organic content, plant propagation ability can be listed in descending order as follows: cattails [ reeds [ sunflowers [ Chinese cabbage. The mechanism of metal uptake was apoplastic transportation. Metal accumulation levels in different parts of plants are listed in descending order as follows: roots [ stems [ leaves. This is similar to the findings of most studies.

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Section: Reedssupporting

confidence: 82%

Section: Zn Sequential Extraction Results Of Soilmentioning

confidence: 99%

Chelator-enhanced phytoextraction of copper and zinc by sunflower, Chinese cabbage, cattails and reeds

Yeh

Lin

et al. 2014

Int. J. Environ. Sci. Technol.

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“…The metals are desorbed from the solid soil bulk and enter the soil solution, then were transferred to the root surface, called bioavailability of metals, which affects the latter two processes and was affected by various soil environments significantly. Most studies focused on the first level which is understood relatively clear [11,21,22]. For the latter two levels or phases, however, it is not very clear yet, especially how the metals uptake and distribution in plant parts (e.g.…”

Section: Introductionmentioning

confidence: 99%

Effects of IDSA, EDDS and EDTA on heavy metals accumulation in hydroponically grown maize (Zea mays, L.)

Zhao

Mei-zhu

Jiang

et al. 2010

Journal of Hazardous Materials

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a b s t r a c tHeavy metals contamination of soil is a widespread global problem. Chelant assisted phytoextraction has been proposed to improve the efficiency of phytoextraction which involves three subsequent levels: transfer of metals from the bulk soil to the root surfaces, uptake into the roots and translocation to the shoots. However, most studies focused on the first level. A hydroponic experiment, which addresses the latter two levels, was conducted to study the effects of EDTA, EDDS and IDSA on the uptake and the distribution of Pb, Zn, Cu and Cd in the apoplast and the symplast of roots of maize (Zea mays, L.). The concentrations of the metals (with exception of Zn) in the shoots were increased significantly by addition of all the chelants. EDTA was most effective for Pb uptake and IDSA was interestingly most effective for Cd uptake. Pb in the roots with EDTA was mostly distributed in the apoplast, while Zn, especially with IDSA, was mostly located in the symplast. The results indicated that, the capacity of chelant to enhance the nonselective apoplastic transport of metal may be most important for chelant enhanced phytoextraction.

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“…In recent years, several chemical amendments, such as EDTA, have been used to enhance either phytoextraction or phytostabilization process (Barrutia et al 2010). However, chelators may be toxic to plants and to soil microorganisms (Evangelou et al 2007;Ultra et al 2005). A promising alternative is the utilization of plant-microbe interactions to improve the efficiency of phytoremediation, altering the mobility and bioavailability of metals in soils (Glick 2010;Ma et al 2011;Rajkumar et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Rhizobacteria isolated from a metal-polluted area enhance plant growth in zinc and cadmium-contaminated soil

Pereira

Barbosa

Castro

2014

Int. J. Environ. Sci. Technol.

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In this work, we evaluated the ability of rhizobacteria isolated from a metal-contaminated site to produce plant growth-promoting substances, such as indole-3-acetic acid (IAA), ammonia, hydrogen cyanide, siderophores and extracellular enzymes, to solubilize phosphate and for 1-aminocyclopropane-1-carboxylate (ACC)-deaminase activity, while assessing their capacity to enhance Trifolium repens growth. The rhizobacteria that better performed were used as bioinoculants for plants grown in zinc-and cadmium-spiked soils. Rhizobacteria were inoculated onto white clover seedlings growing in 250 and 500 mg kg -1 of zinc and in 10 and 30 mg kg -1 of cadmium-spiked soils and plant traits determined. The available and exchangeable rhizosphere metal concentrations were analyzed. Twenty rhizobacteria stimulated white clover growth under axenic conditions. Overall, strains Rhodococcus erythropolis EC 34, Achromobacter sp. 1AP2 and Microbacterium sp. 3ZP2 increased clover biomass in the absence and in presence of metals; however, in soils with 250 mg kg -1 of zinc, bacterial inoculation did not enhance plant biomass. Biomass enhancement may be related to the multiple bacterial promoting traits, especially the production of high levels of IAA and siderophores and the activity of ACC-deaminase. To the best of our knowledge, this is the first study reporting the potential of R. erythropolis to increase plant growth in metal-contaminated soils. In general, strains Microbacterium sp. 3ZP2 and Arthrobacter sp. EC 10 enhanced the available and exchangeable metal concentrations in rhizosphere showing their potential to improve phytoremediation efficiency. This work clearly indicates that rhizobacteria are promising for the development of bioinoculants useful for phytoremediation of polluted soils.

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The influence of EDDS and EDTA on the uptake of heavy metals of Cd and Cu from soil with tobacco Nicotiana tabacum

Cited by 116 publications

References 40 publications

Chelator-enhanced phytoextraction of copper and zinc by sunflower, Chinese cabbage, cattails and reeds

Chelator-enhanced phytoextraction of copper and zinc by sunflower, Chinese cabbage, cattails and reeds

Effects of IDSA, EDDS and EDTA on heavy metals accumulation in hydroponically grown maize (Zea mays, L.)

Rhizobacteria isolated from a metal-polluted area enhance plant growth in zinc and cadmium-contaminated soil

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