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https://www.readbyqxmd.com/read/27853966/remediation-of-cu-metal-induced-accelerated-fenton-reaction-by-potato-peels-bio-sorbent
#1
Rafia Azmat, Sumeira Moin, Ailyan Saleem
This article has allied exposure to Ecological Particulate Matter (EPM) and its remediation using potato peel surface (PPC) bio-sorbent on two important edible crops Spinacia oleracea and Luffa acutangula. Fenton reaction acceleration was one of the major stress oxidation reactions as a consequence of iron and copper toxicity, which involve in the formation of hydroxyl radical (OH) through EPM. Results showed that the oxidative stress encouraged by Cu in both species that recruits the degradation of photosynthetic pigments, initiating decline in growth, reduced leaf area and degrade proteins...
December 0: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/27837364/translocation-of-metal-ions-from-soil-to-tobacco-roots-and-their-concentration-in-the-plant-parts
#2
Cleber Pinto da Silva, Thiago E de Almeida, Rosimara Zittel, Tatiana R de Oliveira Stremel, Cinthia E Domingues, Januário Kordiak, Sandro Xavier de Campos
This paper presents a study on the translocation factors (TFs) and bioconcentration factors (BCFs) of copper (Cu), manganese (Mn), zinc (Zn), cobalt (Co), chromium (Cr), cadmium (Cd), lead (Pb), iron (Fe), nickel (Ni), and arsenic (As) ions in roots, stems, and leaves of tobacco. The results revealed that during the tobacco growth, the roots are able to increase the sensitiveness of the physiological control, reducing the translocation of the metals Ni (0.38) and Pb (0.48) to the leaves. Cd and Zn presented factors TF and BCF >1 in the three tissues under analysis, which indicates the high potential for transportation and accumulation of these metals in all plant tissues...
December 0: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/27833841/plant-growth-promotion-and-biofortification-of-chickpea-and-pigeonpea-through-inoculation-of-biocontrol-potential-bacteria-isolated-from-organic-soils
#3
Subramaniam Gopalakrishnan, Srinivas Vadlamudi, Srinivasan Samineni, C V Sameer Kumar
Seven strains of bacteria [Pseudomonas plecoglossicida SRI-156, Brevibacterium antiquum SRI-158, Bacillus altitudinis SRI-178, Enterobacter ludwigii SRI-211, E. ludwigii SRI-229, Acinetobacter tandoii SRI-305 and Pseudomonas monteilii SRI-360; demonstrated previously for control of charcoal rot disease in sorghum and plant growth-promotion (PGP) in rice] were evaluated for their PGP and biofortification traits in chickpea and pigeonpea under field conditions. When treated on seed, the seven selected bacteria significantly enhanced the shoot height and root length of both chickpea and pigeonpea over the un-inoculated control...
2016: SpringerPlus
https://www.readbyqxmd.com/read/27799013/ecotoxicological-assessment-of-dewatered-drinking-water-treatment-residue-for-environmental-recycling
#4
Nannan Yuan, Changhui Wang, Laura A Wendling, Yuansheng Pei
Drinking water treatment residue (DWTR) is commonly regarded as a waste product of drinking water treatment plant, which is disposed to sewer or to landfill, with associated financial and environmental costs. Fortunately, the beneficial recycle of DWTR in environmental remediation has been demonstrated in many reports. However, the lack of information concerning the potential toxicity of dewatered DWTR hinders its widespread use in environmental applications. The present study examined the ecotoxicity of dewatered aluminum (Al) and iron (Fe) DWTR leachates to a green alga, Chlorella vulgaris, systematically...
October 31, 2016: Environmental Technology
https://www.readbyqxmd.com/read/27733860/association-of-increased-grain-iron-and-zinc-concentrations-with-agro-morphological-traits-of-biofortified-rice
#5
Laura T Moreno-Moyano, Julien P Bonneau, José T Sánchez-Palacios, Joseph Tohme, Alexander A T Johnson
Biofortification of rice (Oryza sativa L.) with micronutrients is widely recognized as a sustainable strategy to alleviate human iron (Fe) and zinc (Zn) deficiencies in developing countries where rice is the staple food. Constitutive overexpression of the rice nicotianamine synthase (OsNAS) genes has been successfully implemented to increase Fe and Zn concentrations in unpolished and polished rice grain. Intensive research is now needed to couple this high-micronutrient trait with high grain yields. We investigated associations of increased grain Fe and Zn concentrations with agro-morphological traits of backcross twice second filial (BC2F2) transgenic progeny carrying OsNAS1 or OsNAS2 overexpression constructs under indica/japonica and japonica/japonica genetic backgrounds...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27681110/assessing-the-combination-of-iron-sulfate-and-organic-materials-as-amendment-for-an-arsenic-and-copper-contaminated-soil-a-chemical-and-ecotoxicological-approach
#6
Teresa Fresno, Eduardo Moreno-Jiménez, Jesús M Peñalosa
The efficiency of combining iron sulfate and organic amendments (paper mill sludge, olive mill waste compost and olive tree pruning biochar) for the remediation of an As- and Cu-contaminated soil was evaluated. Changes in As and Cu fractionation and solubility due to the application of the amendments was explored by leachate analysis, single and sequential extractions. Also, the effects on Arrhenatherum elatius growth, germination of Lactuca sativa and toxicity to the bacteria Vibrio fischeri were assessed...
December 2016: Chemosphere
https://www.readbyqxmd.com/read/27664654/mineral-composition-of-pulp-and-production-of-the-yellow-passion-fruit-with-organic-and-conventional-fertilizers
#7
Anália Lúcia Vieira Pacheco, Mateus Francisco Pagliarini, Gilberto Bernardo de Freitas, Ricardo Henrique Silva Santos, José Eduardo Serrão, José Cola Zanuncio
The use of organic foods has been increased in the world. Organic fertilizers, like cattle manure, have emerged as an important component of the organic system production. The production, mass, size, and mineral composition of passion fruit pulp were evaluated when treated with a mineral fertilizer (control) (MIN) or cattle manure at a single dose equivalent to potassium fertilizer (ORG) or double dose (2×ORG). The production and the numbers of fruits of plants treated with MIN and 2×ORG was higher than with ORG...
February 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/27661723/removal-of-phyto-accessible-copper-from-contaminated-soils-using-zero-valent-iron-amendment-and-magnetic-separation-methods-assessment-of-residual-toxicity-using-plant-and-metplate%C3%A2-studies
#8
Nan Feng, Hossein Ghoveisi, Gabriel Bitton, Jean-Claude J Bonzongo
Zero valent iron (ZVI) has been widely tested and used in remediation of both contaminated soils and groundwater, and in general, the in situ amendment of the contaminated media is used as remediation approach. However, concerns remain as to the potential detrimental effects of both the immobilized ZVI and the adsorbed pollutants as the treated system could undergo transformations over time. Accordingly, plans for soil remediation by in situ immobilization of sorbents should include a long-term monitoring of the treated systems...
September 20, 2016: Environmental Pollution
https://www.readbyqxmd.com/read/27633505/the-expression-of-heterologous-fe-iii-phytosiderophore-transporter-hvys1-in-rice-increases-fe-uptake-translocation-and-seed-loading-and-excludes-heavy-metals-by-selective-fe-transport
#9
Raviraj Banakar, Ána Alvarez Fernández, Javier Abadía, Teresa Capell, Paul Christou
Many metal transporters in plants are promiscuous, accommodating multiple divalent cations including some which are toxic to humans. Previous attempts to increase the iron (Fe) and zinc (Zn) content of rice endosperm by overexpressing different metal transporters have therefore led unintentionally to the accumulation of copper (Cu), manganese (Mn) and cadmium (Cd). Unlike other metal transporters, barley Yellow Stripe 1 (HvYS1) is specific for Fe. We investigated the mechanistic basis of this preference by constitutively expressing HvYS1 in rice under the control of the maize ubiquitin1 promoter and comparing the mobilization and loading of different metals...
September 16, 2016: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/27547212/regulating-subcellular-metal-homeostasis-the-key-to-crop-improvement
#10
REVIEW
Khurram Bashir, Sultana Rasheed, Takanori Kobayashi, Motoaki Seki, Naoko K Nishizawa
Iron (Fe), zinc (Zn), manganese (Mn), and copper (Cu) are essential micronutrient mineral elements for living organisms, as they regulate essential cellular processes, such as chlorophyll synthesis and photosynthesis (Fe, Cu, and Mn), respiration (Fe and Cu), and transcription (Zn). The storage and distribution of these minerals in various cellular organelles is strictly regulated to ensure optimal metabolic rates. Alteration of the balance in uptake, distribution, and/or storage of these minerals severely impairs cellular metabolism and significantly affects plant growth and development...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27524990/transition-metal-transport-in-plants-and-associated-endosymbionts-arbuscular-mycorrhizal-fungi-and-rhizobia
#11
REVIEW
Manuel González-Guerrero, Viviana Escudero, Ángela Saéz, Manuel Tejada-Jiménez
Transition metals such as iron, copper, zinc, or molybdenum are essential nutrients for plants. These elements are involved in almost every biological process, including photosynthesis, tolerance to biotic and abiotic stress, or symbiotic nitrogen fixation. However, plants often grow in soils with limiting metallic oligonutrient bioavailability. Consequently, to ensure the proper metal levels, plants have developed a complex metal uptake and distribution system, that not only involves the plant itself, but also its associated microorganisms...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27521639/evaluating-heavy-metal-accumulation-and-potential-health-risks-in-vegetables-irrigated-with-treated-wastewater
#12
Asad Sarwar Qureshi, M Iftikhar Hussain, Shoaib Ismail, Qaisar Mehmood Khan
Effect of irrigation with treated municipal wastewater on the accumulation of heavy metals in soils and food crops and potential health risks to human via consumption of these food crops are evaluated. The higher concentrations of iron (Fe), copper (Cu), chromium (Cr) and zinc (Zn) were found in lettuce, radish and carrots, respectively. However, trace metal levels in all vegetables were far lower than the food safety criteria of World Health Organization and European Union. Bioaccumulation factors (BAF) for heavy metals in different vegetables showed a trend in the order: Fe > Zn > Cu > Cr...
November 2016: Chemosphere
https://www.readbyqxmd.com/read/27516650/a-comparative-study-of-allium-hirtifolium-in-traditional-and-modern-medicine
#13
Laleh Zaheri Abdehvand, Samaneh Soleymani
BACKGROUND: Shallots (wild garlic/Osghordion) with the scientific name of Allium hertifolium, is one of the most famous plants from the Alliaceae family. For a long time, shallots have been used as a source of food and medicine in Iran. The active ingredients of the plant could be referred to agapentagenin, allicin, omega-3, omega-6, and minerals such as potassium, sodium, magnesium, iron, copper, zinc, and manganese. This study was conducted to compare shallots in the traditional and modern medicine in order to make a better use of this precious plant...
May 2016: Iranian Journal of Medical Sciences
https://www.readbyqxmd.com/read/27507505/high-throughput-assay-comparison-and-standardization-for-metal-chelating-capacity-screening-a-proposal-and-application
#14
Jânio Sousa Santos, Vitor Rafael Alvarenga Brizola, Daniel Granato
Aiming to standardize the experimental protocols to assess the ability to chelate Fe(2+) and Cu(2+) using 96-well microplates, we analyzed Brazilian coffees (n=20) as a study-case in relation to their antioxidant activity using conventional methods (DPPH and FRAP assays) and correlated the results with the total phenolic content (TPC) using bivariate and multivariate statistical approaches. Complementarily, we assessed the repeatability, reproducibility, recovery, and linearity of both methods. Data showed that the proposed assays presented a good repeatability and reproducibility (<7% RSD) and mean recovery values of 96...
January 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/27502949/binding-of-transition-metals-to-monosilicic-acid-in-aqueous-and-xylem-cucumis-sativus-l-solutions-a-low-t-electron-paramagnetic-resonance-study
#15
Nenad Stevic, Jelena Korac, Jelena Pavlovic, Miroslav Nikolic
The supplementation of monosilicic acid [Si(OH)4] to the root growing medium is known to protect plants from toxic levels of iron (Fe), copper (Cu) and manganese (Mn), but also to mitigate deficiency of Fe and Mn. However, the physicochemical bases of these alleviating mechanisms are not fully understood. Here we applied low-T electron paramagnetic resonance (EPR) spectroscopy to examine the formation of complexes of Si(OH)4 with Mn(2+), Fe(3+), and Cu(2+) in water and in xylem sap of cucumber (Cucumis sativus L...
October 2016: Biometals: An International Journal on the Role of Metal Ions in Biology, Biochemistry, and Medicine
https://www.readbyqxmd.com/read/27475440/sequestration-of-precious-and-pollutant-metals-in-biomass-of-cultured-water-hyacinth-eichhornia-crassipes
#16
Solomon W Newete, Barend F N Erasmus, Isabel M Weiersbye, Marcus J Byrne
The aim of this study was to investigate the overall root/shoot allocation of metal contaminants, the amount of metal removal by absorption and adsorption within or on the external root surfaces, the dose-response of water hyacinth metal uptake, and phytotoxicity. This was examined in a single-metal tub trial, using arsenic (As), gold (Au), copper (Cu), iron (Fe), mercury (Hg), manganese (Mn), uranium (U), and zinc (Zn). Iron and Mn were also used in low-, medium-, and high-concentration treatments to test their dose effect on water hyacinth's metal uptake...
July 31, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27344673/metals-content-in-herbal-supplements
#17
Michelle Vieira Barrella, Otavio Arruda Heringer, Priscylla Maria Martins Cardoso, Elisangela Flavia Pimentel, Rodrigo Scherer, Dominik Lenz, Denise C Endringer
Obesity has become an international epidemic. To evaluate the level of metals in extracts of plants prescribed as weight loss supplements, different brands containing Camellia sinensis (L.) Kuntze, Citrus aurantium L., Cordia ecalyculata Vell, Ilex paraguariensis A. St.-Hil, Cissus quadrangularis L., Senna alexandrina Mill were purchased in local market, hot acid digested, and analyzed while metal content by inductively coupled plasma optical emission spectrometry, ICP-OES. Quality assurance and quality control tests were carried out in order to monitor and control the reliability of the analytical method...
June 25, 2016: Biological Trace Element Research
https://www.readbyqxmd.com/read/27287494/evaluation-of-sulfathiazole-degradation-by-persulfate-in-milli-q-water-and-in-effluent-of-a-sewage-treatment-plant
#18
Adriana C Velosa, Cláudio A O Nascimento
The presence of antibiotics and their metabolites in natural waters has raised some concern among scientists around the world because it can lead to bacterial resistance and other unknown consequences to mankind and wildlife. Persulfate (PS)-driven oxidation is a new technology that has been used successfully to remediate contaminated sites, but its use to treat wastewater, especially sewage treatment plant (STP) effluent, is still scarce. This paper describes the effect of several persulfate activation methods for degrading sulfathiazole (STZ) in Milli-Q water and in STP effluent...
June 11, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27232406/catalytic-reduction-of-nitrate-in-secondary-effluent-of-wastewater-treatment-plants-by-fe-0-and-pd-cu-%C3%AE-al2o3
#19
Yupan Yun, Zifu Li, Yi-Hung Chen, Mayiani Saino, Shikun Cheng, Lei Zheng
Total nitrogen, in which NO3(-) is dominant in the effluent of most wastewater treatment plants, cannot meet the requirements of the Chinese wastewater discharge standard (<15 mg/L), making nitrate (NO3(-)) elimination attract considerable attention. In this study, reductant iron (Fe(0)) and γ-Al2O3 supported palladium-copper bimetallic catalysts (Pd-Cu/γ-Al2O3) were innovatively used for the chemical catalytic reduction of nitrate in wastewater. A series of specific operational conditions (such as mass ratio of Pd:Cu, catalyst amounts, reaction time and pH of solution) were optimized for nitrate reduction in the artificial solution, and then the selected optimal conditions were further applied for investigating the nitrate elimination of secondary effluent of a wastewater treatment plant in Beijing, China...
2016: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/27230378/biosynthesis-of-a-broad-spectrum-nicotianamine-like-metallophore-in-staphylococcus-aureus
#20
Ghassan Ghssein, Catherine Brutesco, Laurent Ouerdane, Clémentine Fojcik, Amélie Izaute, Shuanglong Wang, Christine Hajjar, Ryszard Lobinski, David Lemaire, Pierre Richaud, Romé Voulhoux, Akbar Espaillat, Felipe Cava, David Pignol, Elise Borezée-Durant, Pascal Arnoux
Metal acquisition is a vital microbial process in metal-scarce environments, such as inside a host. Using metabolomic exploration, targeted mutagenesis, and biochemical analysis, we discovered an operon in Staphylococcus aureus that encodes the different functions required for the biosynthesis and trafficking of a broad-spectrum metallophore related to plant nicotianamine (here called staphylopine). The biosynthesis of staphylopine reveals the association of three enzyme activities: a histidine racemase, an enzyme distantly related to nicotianamine synthase, and a staphylopine dehydrogenase belonging to the DUF2338 family...
May 27, 2016: Science
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