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https://www.readbyqxmd.com/read/28441624/various-soil-amendments-and-environmental-wastes-affect-the-im-mobilization-and-phytoavailability-of-potentially-toxic-elements-in-a-sewage-effluent-irrigated-sandy-soil
#1
Sabry M Shaheen, Mohamed S Shams, Mohamed R Khalifa, Mohamed A El-Dali, Jörg Rinklebe
Contamination of long-term sewage effluent irrigated soils by potentially toxic elements (PTEs) is a serious concern due to its high environmental and health risk. Our scientific hypothesis is that soil amendments can cause contradictory effects on the element mobilization and phytoavailability depending on the type of element and amendment. Therefore, we aimed to assess the impact of the application (1%) of several low cost amendments and environmental wastes on the (im)mobilization, availability, and uptake of Al, Cd, Cr, Cu, Fe, Mn, Ni, and Zn by sorghum (Sorghum bicolor) in a long term sewage effluent irrigated sandy soils collected from Egypt...
April 22, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28441038/phytoextraction-of-nitrogen-and-phosphorus-by-crops-grown-in-a-heavily-manured-dark-brown-chernozem-under-contrasting-soil-moisture-conditions
#2
Ikechukwu Agomoh, Xiying Hao, Francis Zvomuya
Repeated uptake of excess nutrients by crops in soils with a long history of manure application may be a viable option for reducing the nutrient levels. In this greenhouse study, we examined the effectiveness of six 40-day cycles of barley, canola, corn, oat, pea, soybean, and triticale, all grown under two moisture regimes (100% and 50% soil field capacity, SFC), at extracting nitrogen (N) and phosphorus (P) from a Dark Brown Chernozem that had received 180 Mg ha(-1) (wet wt.) of beef cattle feedlot manure annually for 38 years...
April 25, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28441031/lead-accumulation-and-distribution-in-maize-seedlings-relevance-to-biomass-sproduction-and-metal-phytoextraction
#3
Dmitry I Bashmakov, Alina N Kluchagina, Przemysław Malec, Kazimierz Strzałka, Alexander S Lukatkin
Among trace metals, lead is a highly toxic contaminant, being hazardous to humans and animals. Application of maize plants for phytoremediation of polluted soils and waters has recently been of particular interest. The aim of this work is to investigate the Pb-phytoextraction potential of the maize cv. Tzariza used widely in Eastern European agriculture. Maize seedlings were exposed in a nutrient solution to 0.1 - 10000 µM of Pb2+ for 21 days. Lead accumulated mostly in conductive tissues and shoots at 0...
April 25, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28437478/metal-accumulation-by-sunflower-helianthus-annuus-l-and-the-efficacy-of-its-biomass-in-enzymatic-saccharification
#4
Saurabh Sudha Dhiman, Xin Zhao, Jinglin Li, Dongwook Kim, Vipin C Kalia, In-Won Kim, Jae Young Kim, Jung-Kul Lee
Accumulation of metal contaminants in soil as a result of various industrial and anthropogenic activities has reduced soil fertility significantly. Phytoextraction of metal contaminants can improve soil fertility and provide inexpensive feedstock for biorefineries. We investigated the hyperaccumulation capacity of sunflower (Helianthus annuus) biomass by cultivating these plants in various concentrations of metal contaminants. Sunflowers were grown in soils contaminated with various levels of heavy metals (10-2,000 mg/kg dry soil)...
2017: PloS One
https://www.readbyqxmd.com/read/28436673/unique-rhizosphere-micro-characteristics-facilitate-phytoextraction-of-multiple-metals-in-soil-by-the-hyperaccumulating-plant-sedum-alfredii
#5
Dandi Hou, Kai Wang, Ting Liu, Haixin Wang, Zhi Lin, Jie Qian, Lingli Lu, Shengke Tian
Understanding the strategies that the roots of hyperaccumulating plants use to extract heavy metals from soils is important for optimizing phytoremediation. The rhizosphere characteristics of Sedum alfredii, a hyperaccumulator, were investigated 6 months after planting in weathered field soils contaminated with 5.8 μg·g-1 Cd, 1985.1 μg·g-1 Zn, 667.5 μg·g-1 Pb, and 698.8 μg·g-1 Cu. In contrast with the non-hyperaccumulating ecotype (NHE), the hyperaccumulating ecotype (HE) of S. alfredii was more tolerant to the metals and accumulated higher levels of Cd and Zn...
April 24, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28421524/distance-dependent-varieties-of-microbial-community-structure-and-metabolic-functions-in-the-rhizosphere-of-sedum-alfredii-hance-during-phytoextraction-of-a-cadmium-contaminated-soil
#6
Wenhao Yang, Taoxiang Zhang, Sen Lin, Wuzhong Ni
The recovery of microbial community and activities is crucial to the remediation of contaminated soils. Distance-dependent variations of microbial community composition and metabolic characteristics in the rhizospheric soil of hyperaccumulator during phytoextraction are poorly understood. A 12-month phytoextraction experiment with Sedum alfredii in a Cd-contaminated soil was conducted. A pre-stratified rhizobox was used for separating sub-layer rhizospheric (0-2, 2-4, 4-6, 6-8, 8-10 mm from the root mat)/bulk soils...
April 18, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28411316/phytoextraction-of-rare-earth-elements-in-herbaceous-plant-species-growing-close-to-roads
#7
Patrycja Mikołajczak, Klaudia Borowiak, Przemysław Niedzielski
The aim of study was to determine the phytoextraction of rare earth elements (REEs) to roots, stems and leaves of five herbaceous plant species (Achillea millefolium L., Artemisia vulgaris L., Papaver rhoeas L., Taraxacum officinale AND Tripleurospermum inodorum), growing in four areas located in close proximity to a road with varied traffic intensity. Additionally, the relationship between road traffic intensity, REE concentration in soil and the content of these elements in plant organs was estimated. A. vulgaris and P...
April 14, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28386947/the-potential-of-genetic-engineering-of-plants-for-the-remediation-of-soils-contaminated-with-heavy-metals
#8
REVIEW
Elisa Fasani, Anna Manara, Flavio Martini, Antonella Furini, Giovanni DalCorso
The genetic engineering of plants to facilitate the reclamation of soils and waters contaminated with inorganic pollutants is a relatively new and evolving field, benefiting from the heterologous expression of genes that increase the capacity of plants to mobilize, stabilize and/or accumulate metals. The efficiency of phytoremediation relies on the mechanisms underlying metal accumulation and tolerance, such as metal uptake, translocation and detoxification. The transfer of genes involved in any of these processes into fast-growing, high-biomass crops may improve their reclamation potential...
April 7, 2017: Plant, Cell & Environment
https://www.readbyqxmd.com/read/28386894/photosynthetic-pigments-and-peroxidase-activity-of-lepidium-sativum-l-during-assisted-hg-phytoextraction
#9
Beata Smolinska, Joanna Leszczynska
The study was conducted to evaluate metabolic answer of Lepidium sativum L. on Hg, compost, and citric acid during assisted phytoextraction. The chlorophyll a and b contents, total carotenoids, and activity of peroxidase were determined in plants exposed to Hg and soil amendments. Hg accumulation in plant shoots was also investigated. The pot experiments were provided in soil artificially contaminated by Hg and/or supplemented with compost and citric acid. Hg concentration in plant shoots and soil substrates was determined by cold vapor atomic absorption spectroscopy (CV-AAS) method after acid mineralization...
April 6, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28343956/effect-of-cd-2-and-cd-2-auxin-mixtures-on-lipid-monolayers-model-membrane-studies-on-the-role-of-auxins-in-phytoremediation-of-metal-ions-from-contaminated-environment
#10
Katarzyna Hąc-Wydro, Marzena Mach, Karolina Węder, Katarzyna Pająk, Paweł Wydro
In this work Langmuir monolayer experiments were performed to analyze the effect of Cd(2+) ions and their mixtures with synthetic auxin (1-naphthaleneacetic acid - NAA) on lipid films. These investigations were motivated by the fact that auxins act effectively as the agents improving the removal of metal ions from contaminated water and soil by plants (phytoextraction), and although their mechanism of action in this area is still unclear, it was suggested that it can be membrane-related. The experiments were done for one component (1,2-dipalmitoyl-sn-glycero-3-phosphocholine - DPPC; 1,2-dioleoyl-sn-glycero-3-phosphocholine - DOPC; 1,2-dipalmitoyl-sn-glycero-3-phospho-(1'-rac-glycerol) (sodium salt) - DPPG) monolayers and mixed (DPPG/DOPC and DPPG/DPPC) films treated as model of plant leaves membranes...
March 23, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28323452/how-to-manage-plant-biomass-originated-from-phytotechnologies-gathering-perceptions-from-end-users
#11
V Bert, S Neu, I Zdanevitch, W Friesl-Hanl, S Collet, R Gaucher, M Puschenreiter, I Müller, J Kumpiene
A questionnaire survey was carried out in 4 European countries to gather end-user's perceptions of using plants from phytotechnologies in combustion and anaerobic digestion (AD). 9 actors of the wood energy sector from France, Germany and Sweden, and 11 AD platform operators from France, Germany and Austria were interviewed. Questions related to installation, input materials, performed analyses, phytostabilization and phytoextraction. Although the majority of respondents did not know phytotechnologies, results suggested that plant biomass from phytomanaged areas could be used in AD and combustion, under certain conditions...
March 21, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28318794/ethylenediaminedisuccinic-acid-edds-enhances-phytoextraction-of-lead-by-vetiver-grass-from-contaminated-residential-soils-in-a-panel-study-in-the-field
#12
Ramesh Attinti, Kirk R Barrett, Rupali Datta, Dibyendu Sarkar
Phytoextraction is a green remediation technology for cleaning contaminated soils. Application of chelating agents increases metal solubility and enhances phytoextraction. Following a successful greenhouse experiment, a panel study under field weather elucidated the efficiency of the chelating agent ethylenediaminedisuccinic acid (EDDS) on phytoextraction of lead (Pb) by vetiver grass, a hyperaccumulator of Pb, and a nonaccumulator fescue grass from residential soils contaminated with Pb-based paint from Baltimore, MD and San Antonio, TX...
March 16, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28318697/how-do-low-doses-of-desferrioxamine-b-and-edta-affect-the-phytoextraction-of-metals-in-sunflower
#13
J Y Cornu, C Dépernet, C Garnier, V Lenoble, A Braud, T Lebeau
The aim of this study was to compare the efficiency of siderophore desferrioxamine B (DFOB) and EDTA in increasing the phytoextraction of metals in sunflower. A 28-day pot experiment was conducted in a metal-contaminated soil supplied with 200μmolkg(-1) of DFOB or EDTA. Pore water was collected and pseudo-polarographic analyses were conducted to assess the impact of the two chelators on the mobility and speciation of metals in the liquid phase. Our results showed that DFOB is not an efficient mobilizing agent of divalent metals in soil...
March 15, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28211339/phytoextraction-of-contaminated-urban-soils-by-panicum-virgatum-l-enhanced-with-application-of-a-plant-growth-regulator-bap-and-citric-acid
#14
Matthew Aderholt, Dale L Vogelien, Marina Koether, Sigurdur Greipsson
Lead (Pb) contamination in soil represents a threat to human health. Phytoextraction has gained attention as a potential alternative to traditional remediation methods because of lower cost and minimal soil disruption. The North American native switchgrass (Panicum virgatum L.) was targeted due to its ability to produce high biomass and grow across a variety of ecozones. In this study switchgrass was chemically enhanced with applications of the soil-fungicide benomyl, chelates (EDTA and citric acid), and PGR to optimize phytoextraction of Pb and zinc (Zn) from contaminated urban soils in Atlanta, GA...
May 2017: Chemosphere
https://www.readbyqxmd.com/read/28191957/toward-financially-viable-phytoextraction-and-production-of-plant-based-palladium-catalysts
#15
Zakuan A S Harumain, Helen L Parker, Andrea Muñoz García, Michael J Austin, Con Robert McElroy, Andrew J Hunt, James H Clark, John A Meech, Christopher W N Anderson, Luca Ciacci, T E Graedel, Neil C Bruce, Elizabeth L Rylott
Although a promising technique, phytoextraction has yet to see significant commercialization. Major limitations include metal uptake rates and subsequent processing costs. However, it has been shown that liquid-culture-grown Arabidopsis can take up and store palladium as nanoparticles. The processed plant biomass has catalytic activity comparable to that of commercially available catalysts, creating a product of higher value than extracted bulk metal. We demonstrate that the minimum level of palladium in Arabidopsis dried tissues for catalytic activity comparable to commercially available 3% palladium-on-carbon catalysts was achieved from dried plant biomass containing between 12 and 18 g·kg(-1) Pd...
February 27, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28188207/use-of-endophytic-and-rhizosphere-bacteria-to-improve-phytoremediation-of-arsenic-contaminated-industrial-soils-by-autochthonous-betula-celtiberica
#16
Victoria Mesa, Alejandro Navazas, Ricardo González-Gil, Aida González, Nele Weyens, Béatrice Lauga, Jose Luis R Gallego, Jesús Sánchez, Ana Isabel Peláez
The aim of this study was to investigate the potential of indigenous arsenic-tolerant bacteria to enhance arsenic phytoremediation by the autochthonous pseudometallophyte Betula celtiberica The first goal was to perform an initial analysis of the entire rhizosphere and endophytic bacterial communities of the above-named accumulator plant, including the cultivable bacterial species. B. celtiberica's microbiome was dominated by taxa related to Flavobacteriales, Burkholderiales, and Pseudomonadales, especially the Pseudomonas and Flavobacterium genera...
April 15, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28156129/effects-of-citric-acid-and-the-siderophore-desferrioxamine-b-dfo-b-on-the-mobility-of-germanium-and-rare-earth-elements-in-soil-and-uptake-in-phalaris-arundinacea
#17
Oliver Wiche, Dirk Tischler, Carla Fauser, Jana Lodemann, Hermann Heilmeier
Effects of citric acid and desferrioxamine B (DFO-B) on the availability of Ge and selected REEs (La, Nd, Gd, Er) to P. arundinacea were investigated. A soil dissolution experiment was conducted to elucidate the effect of citric acid and DFO-B at different concentrations (1 and 10 mmol l(-1) citric acid) on the release of Ge and REEs from soil. In a greenhouse plants of P. arundinacea were cultivated on soil and on sand cultures to investigate the effects of citric acid and DFO-B on the uptake of Ge and REEs by the plants...
February 3, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/28144868/phytoremediation-of-urban-soils-contaminated-with-trace-metals-using-noccaea-caerulescens-comparing-non-metallicolous-populations-to-the-metallicolous-ganges-in-field-trials
#18
Arnaud Jacobs, Thomas Drouet, Thibault Sterckeman, Nausicaa Noret
Urban soil contamination with trace metals is a major obstacle to the development of urban agriculture as crops grown in urban gardens are prone to accumulate trace metals up to toxic levels for human consumption. Phytoextraction is considered as a potentially cost-effective alternative to conventional methods such as excavation. Field trials of phytoextraction with Noccaea caerulescens were conducted on urban soils contaminated with Cd, Cu, Pb, and Zn (respectively around 2, 150-200, 400-500, and 400-700 μg g(-1) of dry soil)...
January 31, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28135667/phytoextraction-of-toxic-trace-elements-by-sorghum-bicolor-inoculated-with-streptomyces-pactum-act12-in-contaminated-soils
#19
Amjad Ali, Di Guo, Amanullah Mahar, Ping Wang, Fang Ma, Feng Shen, Ronghua Li, Zengqiang Zhang
The increasing industrial, mining and agricultural activities have intensified the release of potential toxic trace elements (PTEs), which are of great concern to human health and environment. The alarming increase in PTEs concentration, stress the need for biotechnological remediation approaches. In order to assist phytoextraction of PTEs, different combinations of Streptomyces pactum (Act12) with biochar were applied to mining and industrial polluted soils of Shaanxi and Hunan Provinces of China, respectively...
January 27, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28120224/evaluating-phytoextraction-efficiency-of-two-high-biomass-crops-after-soil-amendment-and-inoculation-with-rhizobacterial-strains
#20
Álvarez-López Vanessa, Prieto-Fernández Ángeles, Roiloa Sergio, Rodríguez-Garrido Beatriz, Herzig Rolf, Puschenreiter Markus, Kidd Petra Susan
We evaluated the effect of compost amendment and/or bacterial inoculants on the growth and metal accumulation of Salix caprea (clone BOKU 01 AT-004) and Nicotiana tabacum (in vitro-bred clone NBCu10-8). Soil was collected from an abandoned Pb/Zn mine and rhizobacterial inoculants were previously isolated from plants growing at the same site. Plants were grown in untreated or compost-amended (5% w/w) soil and were inoculated with five rhizobacterial strains. Non-inoculated plants were also established as a control...
January 24, 2017: Environmental Science and Pollution Research International
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