Plant Screening for Chromium Phytoremediation

Shahandeh, H.; Hossner, L. R.

doi:10.1080/15226510008500029

Cited by 134 publications

(82 citation statements)

References 34 publications

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“…While sunflower has high biomass production and will hyperaccumulate Cr, it also has a low Cr tolerance compared to other agronomic species. [3] To enhance the phytoextraction of Cr, we used a low P fertility level (11 mg P mL À1 ) to allow greater Cr uptake. Phosphate (H 2 PO 4 À ) will inhibit CrO 4 2 7 adsorption in equilibrated soil suspensions.…”

Section: Discussionmentioning

confidence: 99%

“…Very little data was available on Cr uptake by agronomic crops until recently. [3] Heavy metals are not degraded biologically in soil. In soils they occur as free metal ions, exchangeable metal ions, soluble metal complexes (sequestered to ligands), organically bound metals, precipitated or insoluble compounds such as oxides, carbonates and hydroxides, or they may form part of the silicate structure (indigenous soil content).…”

Section: Introductionmentioning

confidence: 99%

“…Sunflower is a high biomass plant with high metal accumulating ability, but low Cr tolerance compared to other agronomic crops. [3] Objectives of this research were to determine if G. intraradices could enhance Cr uptake and increase plant tolerance as determined by plant development and gas exchange of container-grown sunflower seedlings. The ability of G. intraradices to modify Cr effects on tissue mineral concentration was also determined.…”

Section: Introductionmentioning

confidence: 99%

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Mycorrhizal Fungi Increase Chromium Uptake by Sunflower Plants: Influence on Tissue Mineral Concentration, Growth, and Gas Exchange

Davies

Puryear

Newton

et al. 2002

Journal of Plant Nutrition

174

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As a potential phytoremediation system for phytoextraction of chromium (Cr), we evaluated the influence of the arbuscular mycorrhizal fungus Glomus intraradices on leaf tissue elemental composition, growth and gas exchange of sunflower (Helianthus annuus L.). Sunflower seedlings were either inoculated with mycorrhizal fungi (AM) or non-inoculated (Non-AM) and then exposed to two Cr species: {12 mmol of trivalent cation (Cr þ3 ) [Cr(III)] or 0.1 mmol of divalent dichromate anion (Cr 2 O 7 À ) [Cr(VI)]}. Both Cr species depressed plant growth, decreased stomatal conductance (g s ) and net photosynthesis (A).

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Mycorrhizal Fungi Increase Chromium Uptake by Sunflower Plants: Influence on Tissue Mineral Concentration, Growth, and Gas Exchange

Davies

Puryear

Newton

et al. 2002

Journal of Plant Nutrition

174

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“…For instance, differential sensitivity to chromium (Cr) among different genotypes of the same species has been reported (Shahandeh and Hossner 2002). Gill et al (2014) also reported genotypic variation in response to Cr toxicity in four oilseed rape cultivars.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of stress effects of copper oxide nanoparticles in Brassica napus L. seedlings

Nair

Chung

2017

3 Biotech

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Rapid growth of nanotechnology has enabled the production and use of engineered nanoparticles (ENPs) in several industries as well as in agriculture areas. This has raised ecotoxicological concerns due to the release of ENPs to the environment. In the present study, we investigated the effects of interactions of copper oxide nanoparticles (CuO NPs) on physiological, biochemical, and molecular indices in seedlings of an important oil seed crop Brassica napus L. The seedlings were treated with 0, 20, 50, 100, 200, 400, and 500 mg/L of CuO NPs for 14 days in halfstrength semi-solid Murashige and Skoog medium. The CuO NPs treatment significantly reduced shoot and root growth as well as plant biomass. Shortening and thickening of primary and lateral roots and inhibition of lateral root growth was observed at higher concentrations. An increase in reactive oxygen species generation, and malondialdehyde accumulation was observed. Histochemical staining of roots with propidium iodide and aniline blue indicated cell death and callose formation in roots. Transcriptional modulation of genes related to oxidative stress viz. CuZn superoxide dismutase, catalase, and ascorbate peroxidase was observed. Element content analysis showed an increase in Cu content and decrease in Fe, Mn, and Zn contents. Overall, exposure to CuO NPs caused oxidative injury, cell death, callose formation, and decreased the micro nutrient contents in B. napus seedlings.

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“…Hydroponic systems were used in most of these studies because of the ease of experimental design (Arteaga et al 2000;Zhang et al 2007;Diwan, Ahmad, and Iqbal 2012;Duarte Silva, and Caçador 2012). In other studies, natural or synthetic polluted soils were used in studying the phytoextraction of Cr(VI) (Prakash 1995;Shahandeh and Hossner 2000;Dong et al 2007;Adki, Jadhav, and Bapat, 2012).…”

Section: Introductionmentioning

confidence: 99%

Phytoextraction of Cr(VI) from soil using Portulaca oleracea

Alyazouri

Jewsbury

Tayim

et al. 2013

Toxicological & Environmental Chemistry

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Cr(VI) represents an environmental challenge in both soils and waters as it is soluble and bioavailable over a wide range of pH. In previous investigations, Portulaca oleracea (a plant local to the UAE) demonstrated particular ability for the phytoextraction of Cr(VI) from calcareous soils of the UAE. In this publication, the results of the evaluation of P. oleracea phytoextraction of Cr(VI) from UAE soil at higher concentrations are reported. P. oleracea was exposed to nine different concentrations of Cr(VI) in soil from 0 to 400 mg kg -1 . The uptake of Cr(VI) increased as its concentration in soil increased between 50 and 400 mg kg -1 , with the most efficient removal in the range from 150 to 200 mg kg -1 . The total chromium concentrations exceeded 4600 mg kg -1 in roots and 1400 mg kg -1 in stems, confirming the role of P. oleracea as an effective Cr(VI) accumulator. More than 95% of the accumulated Cr(VI) was reduced to the less toxic Cr(III) within the plant.

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Plant Screening for Chromium Phytoremediation

Cited by 134 publications

References 34 publications

Mycorrhizal Fungi Increase Chromium Uptake by Sunflower Plants: Influence on Tissue Mineral Concentration, Growth, and Gas Exchange

Mycorrhizal Fungi Increase Chromium Uptake by Sunflower Plants: Influence on Tissue Mineral Concentration, Growth, and Gas Exchange

Evaluation of stress effects of copper oxide nanoparticles in Brassica napus L. seedlings

Phytoextraction of Cr(VI) from soil using Portulaca oleracea

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