Influence of [S, S]-EDDS on Phytoextraction of Copper and Zinc by<i>Elsholtzia Splendens</i>From Metal-Contaminated Soil

Wu, Longhua; Sun, Xiaoyin; Luo, Yongming; Xing, Xiaowei; Christie, Peter

doi:10.1080/15226510701376091

Cited by 17 publications

(6 citation statements)

References 36 publications

(39 reference statements)

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“…With the exception of EDDS and S + EDDS leaves, however, Cu concentrations in aboveground tissues are higher in field-grown plants than in laboratory-cultivated plants. The application of EDDS to soil at four months led to a significant increase in plant Cu concentration, consistent with previous research (Bucheli-Witschel and Egli, 2001;Cooper et al, 1999;Jiang et al, 2003;Qiu et al, 2006;Sun et al, 2006;Wu et al, 2007), indicating that the growth period and growth cycle of the Cu and~20% for biomass. …”

Section: Biomass and Cu Concentrations In Plantssupporting

confidence: 80%

“…Although Wu et al (2007) found EDDS in the xylem of E. splendens, the light Cu isotopic enrichment found in EDDS and S + EDDS plants in the present study shows that E. splendens does not take up Cu as a complex, since the Cu isotopic composition of the Cu-EDDS complex is heavier than that in ionic Cu species. This is consistent with previous research that found that lighter Zn and Cu isotopes are partitioned into plants cultivated in solution with a higher metal affinity (Jouvin et al, 2012;Weiss et al, 2005).…”

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confidence: 56%

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Cu isotopic compositions in Elsholtzia splendens: Influence of soil condition and growth period on Cu isotopic fractionation in plant tissue

Zhu

et al. 2016

Chemical Geology

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This study investigates the magnitude and direction of Cu isotopic fractionation in the Cu-tolerant, strategy I plant, Elsholtzia splendens, considering the effect of soil condition and plant growth cycle. Uptake of Cu by E. splendens from soil was found to favor light Cu isotopic enrichment (δ 65 Cu b 0‰) due to reduction at the soilroot interface. The magnitude of fractionation between soil and plant was found to be dependent on free Cu ion species in soil solution correlated with pH value of soil other than the phytoavailable component of soil or total soil for the same parent soil. Cu isotopic fractionation occurs in plant, the fractionation direction and magnitude would vary between different plant organs (i.e., root and stem) as well as different plant tissues (i.e., xylem and phloem). Remobilization of Cu associated with plant senescence was found to have a considerable effect on Cu isotopic fractionation within the plant, and the fractionation factor was found to change with the degree of remobilization. Overall, the results show that the Cu isotopic composition is useful as a tracer for probing the mechanisms of Cu translocation and retranslocation between soil and plants, and within plants.

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Section: Biomass and Cu Concentrations In Plantssupporting

confidence: 80%

mentioning

confidence: 56%

Cu isotopic compositions in Elsholtzia splendens: Influence of soil condition and growth period on Cu isotopic fractionation in plant tissue

Zhu

et al. 2016

Chemical Geology

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“…Fellet et al 2007;Tassi et al 2008). Maize was successfully experimented in phytoextraction of Cd and other metals such as Ni, Cu, Pb and Zn (Wu et al 2007;Murakami and Ae 2009), often in association with the use of chelators, mycorrhizae, bacteria and other devices, such as application of sulphur and co-planting with hyperaccumulators. Among the most represented families, interest focuses mainly on a few species for Brassicaceae and a greater number of Poaceae, which have been studied more recently, together with Fabaceae.…”

Section: Crop Speciesmentioning

confidence: 99%

Field crops for phytoremediation of metal-contaminated land. A review

2009

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The use of higher plants to remediate contaminated land is known as phytoremediation, a term coined 15 years ago. Among green technologies addressed to metal pollution, phytoextraction has received increasing attention starting from the discovery of hyperaccumulator plants, which are able to concentrate high levels of specific metals in the above-ground harvestable biomass. The small shoot and root growth of these plants and the absence of their commercially available seeds have stimulated study on biomass species, including herbaceous field crops. We review here the results of a bibliographical survey from 1995 to 2009 in CAB abstracts on phytoremediation and heavy metals for crop species, citations of which have greatly increased, especially after 2001. Apart from the most frequently cited Brassica juncea ( L.) Czern., which is often referred to as an hyperaccumulator of various metals, studies mainly focus on Helianthus annuus L., Zea mays L. and Brassica napus L., the last also having the greatest annual increase in number of citations. Field crops may compensate their low metal concentration by a greater biomass yield, but available data from in situ experiments are currently very few. The use of amendments or chelators is often tested in the field to improve metal recovery, allowing above-normal concentrations to be reached. Values for Zn exceeding 1,000 mg kg(-1) are found in Brassica spp., Phaseolus vulgaris L. and Zea mays, and Cu higher than 500 mg kg(-1) in Zea mays, Phaseolus vulgaris and Sorghum bicolor (L.) Moench. Lead greater than 1,000 mg kg(-1) is measured in Festuca spp. and various Fabaceae. Arsenic has values higher than 200 mg kg(-1) in sorghum and soybean, whereas Cd concentrations are generally lower than 50 mg kg(-1). Assisted phytoextraction is currently facilitated by the availability of low-toxic and highly degradable chelators, such as EDDS and nitrilotriacetate. Currently, several experimental attempts are being made to improve plant growth and metal uptake, and results are being achieved from the application of organic acids, auxins, humic acids and mycorrhization. The phytoremediation efficiency of field crops is rarely high, but their greater growth potential compared with hyperaccumulators should be considered positively, in that they can establish a dense green canopy in polluted soil, improving the landscape and reducing the mobility of pollutants through water, wind erosion and water percolation

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“…The efficiency of phytoextraction is typically constrained by low metal availability in contaminated soils. Therefore, synthetic chelants are applied to solubilize metals from soil, and facilitate metal diffusion or convection to roots, which in turn increase the up-take and transport of metals by plants (Huang et al, 1997;Wu et al, 2007;Nowack et al, 2006). During the last 20 years, [S,S′]-ethylenediamine disuccinic acid (EDDS) has been developed as a sound alternative to EDTA due to its rapid biodegradation rate in soil, which substantially reduces the leaching risks of solubilized metals (Meers et al, 2008;Wang et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Role of chelant on Cu distribution and speciation in Lolium multiflorum by synchrotron techniques

Zhao

Cui

Chan

et al. 2018

Science of The Total Environment

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Influence of [S, S]-EDDS on Phytoextraction of Copper and Zinc byElsholtzia SplendensFrom Metal-Contaminated Soil

Cited by 17 publications

References 36 publications

Cu isotopic compositions in Elsholtzia splendens: Influence of soil condition and growth period on Cu isotopic fractionation in plant tissue

Cu isotopic compositions in Elsholtzia splendens: Influence of soil condition and growth period on Cu isotopic fractionation in plant tissue

Field crops for phytoremediation of metal-contaminated land. A review

Role of chelant on Cu distribution and speciation in Lolium multiflorum by synchrotron techniques

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