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phytoextraction

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https://www.readbyqxmd.com/read/29340860/trace-element-phytoextraction-from-contaminated-soil-a-case-study-under-mediterranean-climate
#1
Werther Guidi Nissim, Emily Palm, Stefano Mancuso, Elisa Azzarello
The current field study aims to assess the suitability of four different plant species (i.e. poplar, willow, hemp and alfalfa) to be used for trace element (TE) (i.e. Cd, Cu, Ni, Pb and Zn) phytoextraction under hot-arid Mediterranean climate conditions. Plants were grown for two consecutive years on a moderate TE contaminated soil, supplied with water and mineral nutrients. The growth and physiological parameters were assessed throughout the trial to compare the response of plants to the environmental pollution, and TE uptake rates were measured for aboveground plant tissues...
January 16, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29322395/lead-zinc-and-cadmium-uptake-accumulation-and-phytoremediation-by-plants-growing-around-tang-e-douzan-lead-zinc-mine-iran
#2
Reza Hesami, Azam Salimi, Seyed Majid Ghaderian
In the current study, soils of Tang-e Douzan mine, located in Isfahan, Iran, were collected and analyzed for soluble, exchangeable, and total amounts of Pb, Zn, Cd, Ca, and Mg. The maximum Pb, Zn, Cd, Ca, and Mg concentrations in soils were 2500, 1100, 59, 43,800, and 1320 mg/kg for total metals, 86, 83, 6.3, 4650, and 48 mg/kg for their exchangeable fractions, and 59, 3.7, 0.53, 430, and 6.4 mg/kg for their soluble fractions, respectively. All specimens collected, including 69 plant species, were analyzed for Pb, Zn, and Cd...
January 10, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29305802/effect-of-water-cadmium-concentration-and-water-level-on-the-growth-performance-of-salix-triandroides-cuttings
#3
Xin Yao, Fengfeng Ma, Youzhi Li, Xiaohui Ding, Dongsheng Zou, Yandong Niu, Hualin Bian, Jiajun Deng
The growth performance of Salix triandroides cuttings at three water cadmium (Cd) concentrations (0, 20, and 40 mg L-1) and three water levels (- 40 cm, water level 40 cm below the soil surface; 0 cm, water level even with the soil surface; and 40 cm, water level 40 cm above soil surface) was investigated to evaluate its potential in phytoextraction strategies. Compared to cuttings in the - 40 or 0 cm water levels, cuttings in the 40 cm water level showed significantly lower biomass, height, and adventitious root length and significantly fewer leaves and adventitious roots...
January 5, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29274607/growth-parameters-influencing-uptake-of-chlordecone-by-miscanthus-species
#4
Yohan Liber, Clarisse Létondor, Sophie Pascal-Lorber, François Laurent
Because of its high persistence in soils, t1/2=30years, chlordecone (CLD) was classified as a persistent organic pollutant (POP) by the Stockholm Convention in 2009.The distribution of CLD over time has been heterogeneous, ranging from banana plantations to watersheds, and contaminating all environmental compartments. The aims of this study were to (i) evaluate the potential of Miscanthus species to extract chlordecone from contaminated soils, (ii) identify the growth parameters that influence the transfer of CLD from the soil to aboveground plant parts...
December 20, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29248677/influence-of-natural-and-synthetic-vitamin-c-ascorbic-acid-on-primary-and-secondary-metabolites-and-associated-metabolism-in-quinoa-chenopodium-quinoa-willd-plants-under-water-deficit-regimes
#5
Aniqa Aziz, Nudrat Aisha Akram, Muhammad Ashraf
Phytoextracts are being widely used these days as a source of bioactive compounds for mitigating the harmful effects of abiotic stresses including drought stress. In this study, it was assessed how far foliar applied pure synthetic ascorbic acid (AsA) or natural sweet orange juice (OJ) enriched with AsA could mitigate the drought stress induced adverse effects on growth and some key metabolic processes in quinoa (Chenopodium quinoa Willd.; cultivar V9) plants. Two weeks old quinoa seedlings were subjected to varying irrigation regimes as control [100% field capacity (FC)] and drought stress (60% FC, 40% FC and 20% FC)...
December 5, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/29241131/subcellular-distribution-and-chemical-form-of-phosphorus-involved-in-alleviating-phosphorus-toxicity-of-the-phosphorus-accumulator-polygonum-hydropiper
#6
Daihua Ye, Tingxuan Li, Xizhou Zhang, Zicheng Zheng
Polygonum hydropiper is a dominant plant species in Shifang phosphorus (P) mine area and is a promising P-accumulator used for P-phytoextraction. To date, little information is available on the physiological response involved in alleviating P toxicity of P. hydropiper under high P. A pot experiment was carried out to investigate growth, P subcellular distribution, chemical forms in two ecotypes of P. hydropiper under high levels (1, 4, and 8 mmol P L-1) of inorganic P (Pi) and organic P (Po), supplied as KH2PO4 and myo-inositol hexaphosphoric acid dodecasodium salt, respectively...
December 6, 2017: Chemosphere
https://www.readbyqxmd.com/read/29227891/changes-in-metal-mobility-assessed-by-edta-kinetic-extraction-in-three-polluted-soils-after-repeated-phytoremediation-using-a-cadmium-zinc-hyperaccumulator
#7
Zhu Li, Longhua Wu, Yongming Luo, Peter Christie
Phytoextraction is one of the most promising technologies for the decontamination of metal-polluted agricultural soils. Effects of repeated phytoextraction by the cadmium (Cd)/zinc (Zn) hyperaccumulator Sedum plumbizincicola on metal (Cd, Zn, copper (Cu) and lead (Pb)) mobility were investigated in three contaminated soils with contrasting properties. EDTA kinetic extraction and the two first-order reactions model showed advantages in the assessment of soil metal mobility and clearly discriminated changes in metal fractions induced by phytoextraction...
December 5, 2017: Chemosphere
https://www.readbyqxmd.com/read/29220749/phosphorus-loaded-biochar-changes-soil-heavy-metals-availability-and-uptake-potential-of-maize-zea-mays-l-plants
#8
Munir Ahmad, Adel R A Usman, Abdullah S Al-Faraj, Mahtab Ahmad, Abdelazeem Sallam, Mohammad I Al-Wabel
Biochar (BC) was produced by pyrolyzing the date palm leaf waste at 600 °C and then loaded with phosphorus (P) via sorption process. Greenhouse pot experiment was conducted to investigate the application effects of BC and P-loaded biochar (BCP) on growth and availability of P and heavy metals to maize (Zea mays L.) plants grown in contaminated mining soil. The treatments consisted of BC and BCP (at application rates of 5, 10, 20, and 30 g kg-1 of soil), recommended NK and NPK, and a control (no amendment)...
November 28, 2017: Chemosphere
https://www.readbyqxmd.com/read/29156430/chromium-tolerance-bioaccumulation-and-localization-in-plants-an-overview
#9
REVIEW
Vibha Sinha, Kannan Pakshirajan, Rakhi Chaturvedi
In the current industrial scenario, chromium (Cr) as a metal is of great importance, but poses a major threat to the environment. Phytoremediation provides an environmentally sustainable, ecofriendly, cost effective approach for environmental cleanup of Cr. This review presents the current status of phytoremediation research with particular emphasis on cleanup of Cr contaminated soil and water systems. It gives a detailed account of the work done by different authors on the Cr bioavailability, uptake pathway, toxicity and storage in plants following the phytoextraction mechanism...
November 17, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/29147988/phytoextraction-with-salix-viminalis-in-a-moderately-to-strongly-contaminated-area
#10
Dávid Tőzsér, Sándor Harangi, Edina Baranyai, Gyula Lakatos, Zoltán Fülöp, Béla Tóthmérész, Edina Simon
We tested the suitability of Salix viminalis for phytoextraction with the analysis of selected elements in soil, root, and leaf, and by visual tree condition assessment in an area with varying levels of contamination. Bioconcentration factor (BCF) and translocation factor (TF) were used to assess the phytoextraction potential of willows. The middle part of the study area was strongly contaminated, while the northern and southern parts were moderately contaminated. We found increasing element concentrations toward deeper layers...
November 16, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29121576/soil-geochemical-factors-regulate-cd-accumulation-by-metal-hyperaccumulating-noccaea-caerulescens-j-presl-c-presl-f-k-mey-in-field-contaminated-soils
#11
Carla E Rosenfeld, Rufus L Chaney, Carmen E Martínez
Cadmium contamination in soil is a substantial global problem, and of significant concern due to high food-chain transfer. Cadmium hyperaccumulators are of particular interest because of their ability to tolerate and take up significant amounts of heavy metal pollution from soils. One particular plant, Noccaea caerulescens (formerly, Thlaspi caerulescens), has been extensively studied in terms of its capacity to accumulate heavy metals (specifically Zn and Cd), though these studies have primarily utilized hydroponic and metal-spiked model soil systems...
November 6, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29096173/a-glimpse-into-the-symplastic-and-apoplastic-cd-uptake-by-massai-grass-modulated-by-sulfur-nutrition-plants-well-nourished-with-s-as-a-strategy-for-phytoextraction
#12
Flávio Henrique Silveira Rabêlo, Luiz Tadeu Jordão, José Lavres
To date, there have been no studies demonstrating the influence of sulfur (S) on the cadmium (Cd) uptake kinetics, which limits the understanding of mechanisms involved in the uptake of this element. Therefore, this study was carried out in order to quantify the contribution of symplastic and apoplastic uptakes of Cd (0.1 and 0.5 mmol L(-1)) by Massai grass (Panicum maximum cv. Massai) grown under low and adequate S-supply (0.1 and 1.9 mmol L(-1)) by measuring Cd concentration in the nutrient solution (Vmax, Km, and Cmin) along the plant's exposure time (108 h) and determining Cd concentration in root symplast and apoplast...
October 21, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/29055920/curcumin-in-hepatobiliary-disease-pharmacotherapeutic-properties-and-emerging-potential-clinical-applications
#13
Robert W Hu, Elizabeth J Carey, Keith D Lindor, James H Tabibian
Curcumin, an aromatic phytoextract from the turmeric (Curcuma longa) rhizome, has been used for centuries for a variety of purposes, not the least of which is medicinal. A growing body of evidence suggests that curcumin has a broad range of potentially therapeutic pharmacological properties, including anti-inflammatory, anti-fibrotic, and anti-neoplastic effects, among others. Clinical applications of curcumin have been hampered by quality control concerns and limited oral bioavailability, although novel formulations appear to have largely overcome these issues...
October 16, 2017: Annals of Hepatology
https://www.readbyqxmd.com/read/29054647/pilot-scale-aided-phytoremediation-of-a-co-contaminated-soil
#14
Charlotte Marchand, Michel Mench, Yahya Jani, Fabio Kaczala, Peter Notini, Mohamed Hijri, William Hogland
A pilot scale experiment was conducted to investigate the aided-phytoextraction of metals and the aided-phytodegradation of petroleum hydrocarbons (PHC) in a co-contaminated soil. First, this soil was amended with compost (10% w/w) and assembled into piles (Unp-10%C). Then, a phyto-cap of Medicago sativa L. either in monoculture (MS-10%C) or co-cropped with Helianthus annuus L. as companion planting (MSHA-10%C) was sown on the topsoil. Physico-chemical parameters and contaminants in the soil and its leachates were measured at the beginning and the end of the first growth season (after five months)...
October 18, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29053353/effect-of-two-biodegradable-chelates-on-metals-uptake-translocation-and-biochemical-changes-of-lantana-camara-growing-in-fly-ash-amended-soil
#15
Shikha Kumari Pandey, Tanushree Bhattacharya
The present work had two purposes firstly to evaluate the potential of Lantana Camara for phytoextraction of heavy metals from fly ash amended soil and to assess the suitability of a proper biodegradable chelating agent for chelate assisted phytoextraction. Plants were grown in manure mixed soil amended with various concentration of fly ash. Two biodegradable chelating agents were added (EDDS and MGDA) in the same dose separately before maturation stage. Sampling was done at different growing stages. The plant took up metal in different plant parts in the following order: for Cu, and Zn leaf >root >stem, for Cr and Mn leaf>stem >root, for Ni root >leaf>stem and for Pb root≈leaf>stem respectively...
October 20, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/29053342/lead-phytoextraction-from-printed-circuit-computer-boards-by-lolium-perenne-l-and-medicago-sativa-l
#16
María Esther Díaz Martínez, Rosalba Argumedo-Delira, Gabriela Sánchez-Viveros, Alejandro Alarcón, Libia Iris Trejo-Téllez
This work assessed the ability of Lolium perenne and Medicago sativa for extracting lead (Pb) from particulate printed circuit computer boards (PCB) mixed in sand with the following concentrations: 0.5, 1.0 and 1.5 g of PCB, and including a control treatment without PCB. The PCB were obtained from computers, and grinded in two particle sizes: 0.0594 mm (PCB1) and 0.0706 mm (PCB2). The PCB particle sizes at their corresponding concentrations were applied to L. perenne and M. sativa by using three experimental assays...
October 20, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/29040823/urea-increased-nickel-and-copper-accumulation-in-the-leaves-of-egeria-densa-planch-casp-and-ceratophyllum-demersum-l-during-short-term-exposure
#17
Maria Maleva, Galina Borisova, Nadezhda Chukina, Adarsh Kumar
In the present study, two fresh water plant species Egeria densa (Planch.) Casp. and Ceratophyllum demersum L. were subjected to separate and combined action of urea (2mМ) and metals (Ni and Cu, 10μM) to investigate the phytoremediation potential of these two submerged macrophytes during short-term experiments (48h). Both submerged macrophytes demonstrated high accumulative potential for Ni and Cu (average bioconcentration factors were 2505 for Ni and 3778 for Cu). The urea (2 mM) was not significantly toxic for studied plant species...
October 14, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28992475/nickel-phytoextraction-through-bacterial-inoculation-in-raphanus-sativus
#18
Muhammad Javed Akhtar, Sana Ullah, Iftikhar Ahmad, Abdul Rauf, Sajid Mahmood Nadeem, Muhammad Yahya Khan, Sabir Hussain, Laura Bulgariu
A pot experiment was conducted to evaluate the potential of two plant growth promoting rhizobacteria (PGPR) viz. Bacillus sp. CIK-516 and Stenotrophomonas sp. CIK-517Y for improving the growth and Ni uptake of radish (Raphanus sativus) in the presence of four different levels of Ni contamination (0, 50, 100, 150 mg Ni kg(-1) soil). Plant growth, dry biomass, chlorophyll and nitrogen contents were significantly reduced by the exogenous application of Ni, however, bacterial inoculation diluted the negative impacts of Ni stress on radish by improving these parameters...
September 29, 2017: Chemosphere
https://www.readbyqxmd.com/read/28963601/toxic-metal-tolerance-in-native-plant-species-grown-in-a-vanadium-mining-area
#19
Aikelaimu Aihemaiti, Jianguo Jiang, De'an Li, Tianran Li, Wenjie Zhang, Xutong Ding
Vanadium (V) has been extensively mined in China and caused soil pollution in mining area. It has toxic effects on plants, animals and humans, posing potential health risks to communities that farm and graze cattle adjacent to the mining area. To evaluate in situ phytoremediation potentials of native plants, V, chromium, copper and zinc concentrations in roots and shoots were measured and the bioaccumulation (BAF) and translocation (TF) efficiencies were calculated. The results showed that Setaria viridis accumulated greater than 1000 mg kg(-1) V in its shoots and exhibited TF > 1 for V, Cr, Zn and BAF > 1 for Cu...
September 29, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28923732/ammonium-based-fertilizers-enhance-cd-accumulation-in-carpobrotus-rossii-grown-in-two-soils-differing-in-ph
#20
Miaomiao Cheng, Anan Wang, Caixian Tang
Nitrogen fertilization has been shown to improve Cd uptake by plants but there is little information on the effect of N form. This study examined the effects of N form on Cd bioavailability and phytoextraction in two soils differing in pH. Plants of halophytic species Carpobrotus rossii were grown in an acidic Sodosol [pH (CaCl2) 4.9] and a neutral Vertosol (pH 7.2) spiked with 20 mg kg(-1) Cd as CdCl2. Three N forms, KNO3, (NH4)2SO4 and (NH2)2CO at a rate of 24 mg N kg(-1) were applied at weekly intervals, together with nitrification inhibitor dicyanodiamide...
September 11, 2017: Chemosphere
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