Chelated lead transport in Chamaecytisus proliferus (L.f.) link ssp. proliferus var. palmensis (H. Christ): an ultrastructural study

Jarvis, Martin D.; Leung, David W. M.

doi:10.1016/s0168-9452(01)00424-1

Cited by 61 publications

(38 citation statements)

References 30 publications

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“…Such Pb localization implicates both ways of transport of Pb taken up from Pb?EDTA solution. Jarvis and Leung (2001) came to the same conclusion after observing Pb deposits in cell walls, plasmodesmata and chloroplasts of Pb?EDTA-treated Chamaecytisus proliferus shoot parenchyma cells. Also, Zheng et al (2012) suggested that Pb was transported both along apoplastic and symplastic pathways, independently of the presence or absence of EDTA.…”

Section: Discussionsupporting

confidence: 57%

The effect of EDTA and EDDS on lead uptake and localization in hydroponically grown Pisum sativum L.

et al. 2013

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Pisum sativum plants were treated for 3 days with an aqueous solution of 100 lM Pb(NO 3 ) 2 or with a mixture of lead nitrate and ethylenediaminetetraacetic acid (EDTA) or [S,S]-ethylenediaminedisuccinic acid (EDDS) at equimolar concentrations. Lead decline from the incubation media and its accumulation and localization at the morphological and ultrastructural levels as well as plant growth parameters (root growth, root and shoot dry weight) were estimated after 1 and 3 days of treatment. The tested chelators, especially EDTA, significantly diminished Pb uptake by plants as compared to the lead nitrate-treated material. Simultaneously, EDTA significantly enhanced Pb translocation from roots to shoots. In the presence of both chelates, plant growth parameters remained considerably higher than in the case of uncomplexed Pb. Considerable differences between the tested chelators were visible in Pb localization both at the morphological and ultrastructural level. In Pb?EDTA-treated roots, lead was mainly located in the apical parts, while in Pb?EDDS-exposed material Pb was evenly distributed along the whole root length.Transmission electron microscopy and EDS analysis revealed that in meristematic cells of the roots incubated in Pb?EDTA, large electron-dense lead deposits were located in vacuoles and small granules were rarely noticed in cell walls or cytoplasm, while after Pb?EDDS treatment metal deposits were restricted to the border between plasmalemma and cell wall. Such results imply different ways of transport of those complexed Pb forms.

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Section: Discussionsupporting

confidence: 57%

The effect of EDTA and EDDS on lead uptake and localization in hydroponically grown Pisum sativum L.

et al. 2013

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“…Enhancing Pb soil solution concentration is crucial for successful Pb phytextraction (Blaylock et al, 1997;Huang et al, 1997;Epstein et al, 1999;Jarvis and Leung, 2001;Shen et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

Phytoremediation of lead by jack beans on a Rhodic Hapludox amended with EDTA

Pereira¹,

Abreu

Herpin³

et al. 2010

Sci. agric. (Piracicaba, Braz.)

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A greenhouse study was conducted to evaluate the effects of ethylenediamine tetraacetic acid (EDTA) addition to soils on the lead (Pb) phytoextraction potential of jack beans (Canavalia ensiformis L.). In a pot experimentSoil samples (dystrophic Rhodic Hapludox) were treated with six Pb rates (0, 100, 200, 350, 1,200, and 2,400 mg kg-1 soil) applied as Pb(NO3)2 without and with EDTA application (0 and 0.5 g kg-1, respectively). Lead, Cl-, NO3-, NH4+, SO4(2-), H2PO4-, Zn2+, Cu2+, Fe3+, Al3+, Ca2+, Mg2+, K+ and DOC (dissolved organic carbon) concentrations obtained in a saturation soil extract (soil:water ratio of 1:0.3) were used for Pb speciation by means of the software Visual-Minteq 2.30. Soil Pb-availability was assessed with Diethylene triamine pentaacetic acid (DTPA) extraction. EDTA treated soils showed higher Pb (as PbEDTA2-), and Fe (as FeEDTA-) concentrations in soil solution leading to higher uptake of these elements by the jack bean. On the other hand, it decreased the concentration of stable complexes as Pb-DOC and Fe-DOC. EDTA also induced better nutrition to plants building up the concentration of non target metals (Ca, K, Mg, Zn, Cu, Fe and Mn) in shoots. Shoot dry matter yield remained constant even at the highest Pb rates after EDTA treatment. Jack bean can be considered as a potential Pb-phytoextractor. In addition, the DTPA solution was effective to assess Pb availability to the plants at all applied Pb rates.

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“…After emergence of seedlings, ¼-strength basal nutrient solution was supplied until 4-leaf seedlings were established, and then the uniform plants were selected and transferred to hydroponics culture in 3.6 L plastic containers (5 plants per container) with a full-strength aerated nutrient solution for another 2 weeks preculture. The plants were treated with different Cu (0.016, 6.4, 32 mg L -1 ) and different Pb (0,10,25,50,100,200, (Jarvis and Leung, 2001). Each treatment was replicated thrice.…”

Section: Methodsmentioning

confidence: 99%

“…At each harvest, roots of intact plants were rinsed with distilled water. The Pb-treated plants were immersed in 0.5 mmol L -1 Na 2 EDTA for 30 min to remove Pb (Jarvis and Leung, 2001), and the Cu-treated plants were in 5 mmol L -1 Pb(NO 3 ) 2 for 20 min to remove Cu (Harrison et al, 1979) adhering to the root surfaces, respectively, and then washed with distilled water and blotted dry. Roots, stems, and leaves were separated and oven-dried at 105°C for 30 min, and then they were dried at 65°C to constant weight, and their dry weights (DW) were recorded.…”

Section: Methodsmentioning

confidence: 99%

Characteristics of Copper and Lead Uptake and Accumulation by Two Species of Elsholtzia

Peng

Yang

2007

Bull Environ Contam Toxicol

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Chelated lead transport in Chamaecytisus proliferus (L.f.) link ssp. proliferus var. palmensis (H. Christ): an ultrastructural study

Cited by 61 publications

References 30 publications

The effect of EDTA and EDDS on lead uptake and localization in hydroponically grown Pisum sativum L.

The effect of EDTA and EDDS on lead uptake and localization in hydroponically grown Pisum sativum L.

Phytoremediation of lead by jack beans on a Rhodic Hapludox amended with EDTA

Characteristics of Copper and Lead Uptake and Accumulation by Two Species of Elsholtzia

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