Factors limiting efficiency of phytoextraction at multi-metal contaminated sites

Keller, Catherine

doi:10.1007/1-4020-4688-x_8

Cited by 12 publications

(5 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This contradiction has affected the multi-metal extraction efficiency. To solve this problem, researchers have investigated multi-metal hyperaccumulators (Abu Bakar et al 2013, Keller 2006, Marchiol et al 2004, Shahid et al 2012. P. vittata can accumulate As, Pb (Wan et al 2014), Cr (Su et al 2005), and Sb, although not in a single population.…”

Section: Discussionmentioning

confidence: 99%

Interaction of As and Sb in the hyperaccumulator Pteris vittata L.: changes in As and Sb speciation by XANES

Wan

Lei

Chen

2016

Environ Sci Pollut Res

View full text Add to dashboard Cite

Arsenic (As) and antimony (Sb) are chemical analogs that display similar characteristics in the environment. The As hyperaccumulator Pteris vittata L. is a potential AsSb co-accumulating species. However, when this plant is exposed to different As and Sb speciation, the associated accumulating mechanisms and subsequent assimilation processes of As and Sb remain unclear. A 2-week hydroponic experiment was conducted by exposing P. vittata to single AsIII, AsV, SbIII, and SbV or the co-existence of AsIII and SbIII and AsV and SbV. P. vittata could co-accumulate As and Sb in the pinna (>1000 mg kg −1 ) with high translocation (>1) of As and Sb from the root to the pinna. P. vittata displayed apparent preference to the trivalent speciation of As and Sb than to the pentavalent speciation. Under the single exposure of AsIII or SbIII, the pinna concentration of As and Sb was 84 and 765 % higher than that under the single exposure of AsV or SbV, respectively. Despite the provided As speciation, the main speciation of As in the root was AsV, whereas the main speciation of As in the pinna was AsIII. The Sb in the roots comprised SbV and SbIII when exposed to SbV but was exclusively SbIII when exposed to SbIII. The Sb in the pinna was a mixture of SbV and SbIII regardless of the provided Sb speciation. Compared with the single exposure of As, the coexistence of As and Sb increased the As concentration in the pinna of P. vittata by 50-66 %, accompanied by a significant increase in the AsIII percentage in the root. Compared with the single exposure of Sb, the co-existence of Sb and As also increased the Sb concentration in the pinna by 51-100 %, but no significant change in Sb speciation was found in P. vittata.

show abstract

Section: Discussionmentioning

confidence: 99%

Interaction of As and Sb in the hyperaccumulator Pteris vittata L.: changes in As and Sb speciation by XANES

Wan

Lei

Chen

2016

Environ Sci Pollut Res

View full text Add to dashboard Cite

show abstract

“…±SE Asterisk ( * ) indicates significant difference between wheat grains cultivated in pre-cultivation vs-non-pre-cultivation Difference non-treated vs pre-treated % (Table 1), since the lower the initial concentration the faster is the removal rate (Greger and Landberg 1999). In addition, soils differ in other factors that may influence the Cd uptake rate (Keller 2006). Plants capability to reduce Cd in soil is shown earlier (Greger and Landberg 1999;Al-Dhaibani et al 2013;Wieshammer et al 2007;Hammer and Keller 2003).…”

Section: Resultsmentioning

confidence: 86%

Novel Field Data on Phytoextraction: Pre-Cultivation WithSalixReduces Cadmium in Wheat Grains

Greger

Landberg

2015

International Journal of Phytoremediation

View full text Add to dashboard Cite

Cadmium (Cd) is a health hazard, and up to 43% of human Cd intake comes from wheat products, since Cd accumulates in wheat grains. Salix spp. are high-accumulators of Cd and is suggested for Cd phytoextraction from agricultural soils. We demonstrate, in field, that Salix viminalis can remove Cd from agricultural soils and thereby reduce Cd accumulation in grains of wheat subsequently grown in a Salix-treated field. Four years of Salix cultivation reduce Cd concentration in the soil by up to 27% and in grains of the post-cultivated wheat by up to 33%. The higher the plant density of the Salix, the greater the Cd removal from the soil and the lower the Cd concentration in the grains of post-cultivated wheat, the Cd reduction remaining stable several years after Salix cultivation. The effect occurred in both sandy and clayey soil and in winter and spring bread wheat cultivars. Already one year of Salix cultivation significantly decrease Cd in post grown wheat grains. With this field experiment we have demonstrated that phytoextraction can reduce accumulation of a pollutant in post-cultivated wheat and that phytoextraction has no other observed effect on post-cultivated crops than reduced uptake of the removed pollutant.keywords: agricultural soil, field investigation, low cadmium in wheat, phytoextraction with Salix

show abstract

“…Increasing soil contamination with heavy metals (HMs) has become one of the most serious environmental problems worldwide, especially in areas of rapid industrialization and intense agricultural activities (Bhargava et al, 2012;Usman et al, 2013). Many engineering-based techniques such as vitrification and landfilling can be used to restore HMs polluted areas (Keller, 2006). However, they irreversibly affect soil properties, fertility and biodiversity which may make the soil unsuitable for future colonization by plants (Padmavathiamma & Li, 2007).…”

Section: Introductionmentioning

confidence: 99%

“…: (i) fast growth, (ii) deep and extended root system, (iii) ability to accumulate large quantities of contaminants and translocate them efficiently from the roots to the aerial parts, (iv) tolerance to accumulated toxic elements, (v) be easy to manage, dispose of and/or recycle, (vi) fast adaptation to different habitat conditions (Keller, 2006;Ali et al, 2013;Krzciuk, 2015). However, the choice of plant species for a given situation is always a compromise (Keller, 2006). Initially, much of the research focused mainly on the hyperaccumulators that accumulate exceptionally high concentrations of metals in their aboveground biomass (Yang et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

“…Initially, much of the research focused mainly on the hyperaccumulators that accumulate exceptionally high concentrations of metals in their aboveground biomass (Yang et al, 2015). However, hyperaccumulators exhibit many disadvantages such as a low biomass, slow growth rate, shallow root system as well as large annual variations of yield and metal concentrations which may hinder the phytoextraction efficiency (Keller, 2006;Deram et al, 2007;Doumett et al, 2008). Recent phytoremediation efforts have focused on the use of high-yielding, fast-growing tree species (e.g.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Microbial assisted phytoextraction of Cd2+ by Salix viminalis under in vitro culture conditions

Złoch¹,

Furtado²,

Trejgell³

et al. 2020

Dendrobiology

View full text Add to dashboard Cite

Microbially assisted phytoremediation is considered as the most promising eco-friendly solution for recultivation of heavy metal polluted soils. In vitro experiments can be favorable systems that allow assessing compatibility and efficiency of both partners (e.g. plant-microorganism) which reduces time and space in the initial stages of this technology. The main objective of this study was: (1) to calculate the Cd 2+ accumulation factors (e.g. BCF, Ti, AF) using willow (Salix viminalis L.) inoculated with three Streptomyces sp. strains under in vitro conditions and (2) to compare obtained results with that derived from pot experiments by Złoch et al. (2017). Our results reveal significantly increase in Cd 2+ accumulation capacity of Streptomyces spp. inoculated willow plants, indicating microbial stimulation of phytoextraction. Additionally, inoculated plants showed higher biomass production and lower lipids peroxidation level. The results revealed significant increase of MEA, BCF, Ti, MER by Strep-1 and Strep-2 in the above-ground parts of inoculated plants. Moreover, of the three strains tested, Strep-1 (Streptomyces sp. SIIB-Zn-R8) demonstrated the highest impact on the Cd 2+ phytoextraction efficiency. In conclusion, the proposed in vitro model system allowed predicting Cd 2+ phytoextraction capacity performed using inoculated willow plants with the significant reduction of both time and space.

show abstract

Factors limiting efficiency of phytoextraction at multi-metal contaminated sites

Cited by 12 publications

References 36 publications

Interaction of As and Sb in the hyperaccumulator Pteris vittata L.: changes in As and Sb speciation by XANES

Interaction of As and Sb in the hyperaccumulator Pteris vittata L.: changes in As and Sb speciation by XANES

Novel Field Data on Phytoextraction: Pre-Cultivation WithSalixReduces Cadmium in Wheat Grains

Microbial assisted phytoextraction of Cd2+ by Salix viminalis under in vitro culture conditions

Contact Info

Product

Resources

About