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https://www.readbyqxmd.com/read/29766690/garden-nasturtium-tropaeolum-majus-l-a-source-of-mineral-elements-and-bioactive-compounds
#1
Karolina Jakubczyk, Katarzyna Janda, Katarzyna Watychowicz, Jagoda Łukasiak, Jolanta Wolska
The garden nasturtium (Tropaeolum majus L.) belongs to the family Tropaeolaceae. Native to South America it was brought to Europe in XVI century. It is a plant with numerous healing properties. Medicinal plants such as the garden nasturtium contain trace elements and bioactive compounds which can be easily absorbed by the human body. The flowers and other parts of the garden nasturtium are a good source of micro elements such as potassium, phosphorus, calcium and magnesium, and macro elements, especially of zinc, copper and iron...
2018: Roczniki Państwowego Zakładu Higieny
https://www.readbyqxmd.com/read/29758499/interference-of-three-herbicides-on-iron-acquisition-in-maize-plants
#2
Maria Luce Bartucca, Alessandro Di Michele, Daniele Del Buono
The use of herbicides to control weed species could lead to environmental threats due to their persistence and accumulation in the ecosystems and cultivated fields. Nonetheless, the effect of these compounds on plant mineral nutrition in crops has been barely investigated. This study aimed at ascertaining the effect of three herbicides (S-metolachlor, metribuzin and terbuthylazine) on the capacity of maize to acquire iron (Fe). Interferences on plant growth and reductions on the Fe contents were found in the plants treated...
May 7, 2018: Chemosphere
https://www.readbyqxmd.com/read/29757950/changes-in-arsenic-copper-iron-manganese-and-zinc-levels-resulting-from-the-application-of-poultry-litter-to-agricultural-soils
#3
Richard D Foust, Michael Phillips, Killian Hull, Dariia Yehorova
Twelve applications of poultry litter were made to a 2.1-ha field located in the Shenandoah Valley of Virginia, United States (USA), between March 1999 and August 2014. The field was planted with bermudagrass ( Cynodon dactylon ) and used as a pasture on an active farm. Copper, iron, manganese, zinc, and arsenic concentrations in the poultry litter were measured, and the application rates of these metals were calculated. The median application rates were: Cu, 1.32 kg/ha, Fe, 5.57 kg/ha, Mn, 1.80 kg/ha, Zn, 1...
May 14, 2018: Toxics
https://www.readbyqxmd.com/read/29746569/5000-years-of-dietary-variations-of-prehistoric-farmers-in-the-great-hungarian-plain
#4
Beatriz Gamarra, Rachel Howcroft, Ashley McCall, János Dani, Zsigmond Hajdú, Emese Gyöngyvér Nagy, László D Szabó, László Domboróczki, Ildikó Pap, Pál Raczky, Antónia Marcsik, Zsuzsanna K Zoffmann, Tamás Hajdu, Robin N M Feeney, Ron Pinhasi
The development of farming was a catalyst for the evolution of the human diet from the varied subsistence practices of hunter-gatherers to the more globalised food economy we depend upon today. Although there has been considerable research into the dietary changes associated with the initial spread of farming, less attention has been given to how dietary choices continued to develop during subsequent millennia. A paleogenomic time transect for 5 millennia of human occupation in the Great Hungarian Plain spanning from the advent of the Neolithic to the Iron Age, showed major genomic turnovers...
2018: PloS One
https://www.readbyqxmd.com/read/29684657/engineering-low-cadmium-rice-through-stress-inducible-expression-of-oxs3-family-member-genes
#5
Changhu Wang, Weili Guo, Xingzhe Cai, Ruyu Li, David W Ow
Cadmium (Cd) as a carcinogen poses a great threat to food security and public health through plant-derived foods such as rice, the staple for nearly half of the world's population. We have previously reported that overexpression of truncated gene fragments derived from the rice genes OsO3L2 and OsO3L3 could reduce Cd accumulation in transgenic rice. However, we did not test the full length genes due to prior work in Arabidopsis where overexpression of these genes caused seedling lethality. Here, we report on limiting the overexpression of OsO3L2 and OsO3L3 through the use of the stress- inducible promoter RD29B...
April 20, 2018: New Biotechnology
https://www.readbyqxmd.com/read/29561775/comparison-of-tagging-technologies-for-safeguards-of-copper-canisters-for-nuclear-spent-fuel
#6
REVIEW
Chiara Clementi, François Littmann, Lorenzo Capineri
Several countries are planning to store nuclear spent fuel in long term geological repositories, preserved by copper canisters with an iron insert. This new approach involves many challenging problems and one is to satisfy safeguards requirements: the Continuity of Knowledge (CoK) of the fuel must be kept from the encapsulation plant up to the final repository. To date, no measurement system has been suggested for a unique identification and authentication. Following the list of the most important safeguards, safety and security requirements for copper canisters identification and authentication, a review of conventional tagging technologies and measurement systems for nuclear items is reported in this paper...
March 21, 2018: Sensors
https://www.readbyqxmd.com/read/29524802/soil-amendment-as-a-strategy-for-the-growth-of-young-vines-when-replanting-vineyards-in-soils-with-high-copper-content
#7
Paulo A A Ferreira, Carina Marchezan, Carlos A Ceretta, Camila P Tarouco, Cledimar R Lourenzi, Leandro S Silva, Hilda H Soriani, Fernando T Nicoloso, Stefano Cesco, Tanja Mimmo, Gustavo Brunetto
Soil contamination with copper (Cu)-based agrochemicals used in vineyards for pest control is a growing problem. In this context, the application of soil amendment to limit Cu toxicity, especially for young plants after the replanting of vineyards, has been a concern for winemakers. Therefore, the aim of this study was to evaluate how different amendments can contribute to the decrease in Cu availability in areas vocated to viticulture. Furthermore, the aim was to evaluate to the effect of Cu on the biochemical and physiological changes in the development of the young vine plants, both at the shoot and the root level...
May 2018: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/29471538/novel-roles-of-ascorbate-in-plants-induction-of-cytosolic-ca2-signals-and-efflux-from-cells-via-anion-channels
#8
M Makavitskaya, D Svistunenko, I Navaselsky, P Hryvusevich, V Mackievic, C Rabadanova, E Tyutereva, V Samokhina, D Straltsova, A Sokolik, O Voitsekhovskaja, V Demidchik
Ascorbate is not often considered as a signalling molecule in plants. This study demonstrates that, in Arabidopsis roots, exogenous L-ascorbic acid triggers a transient increase of the cytosolic free calcium activity ([Ca2+]cyt.) that is central to plant signalling. Exogenous copper and iron stimulates the ascorbate-induced [Ca2+]cyt. elevation while cation channel blockers, free radical scavengers, low extracellular [Ca2+], transition metal chelators and removal of the cell wall inhibit this reaction. These data show that apoplastic redox-active transition metals are involved in the ascorbate-induced [Ca2+]cyt...
February 17, 2018: Journal of Experimental Botany
https://www.readbyqxmd.com/read/29447378/trace-metal-metabolism-in-plants
#9
Elisa Andresen, Edgar Peiter, Hendrik Küpper
Many trace metals are essential micronutrients, but also potent toxins. Due to natural and anthropogenic causes, vastly different trace metal concentrations occur in various habitats, ranging from deficient to toxic levels. Therefore, one focus of plant research is on the response to trace metals in terms of uptake, transport, sequestration, speciation, physiological use, deficiency, toxicity, and detoxification. In this review, we cover most of these aspects for the essential micronutrients copper, iron, manganese, molybdenum, nickel, and zinc to provide a broader overview than found in other recent reviews, to cross-link aspects of knowledge in this very active research field that are often seen in a separated way...
February 13, 2018: Journal of Experimental Botany
https://www.readbyqxmd.com/read/29415495/chromatographic-and-spectroscopic-identification-and-recognition-of-natural-dyes-uncommon-dyestuff-components-and-mordants-case-study-of-a-16th-century-carpet-with-chintamani-motifs
#10
Olga Otłowska, Marek Ślebioda, Agata Kot-Wasik, Jakub Karczewski, Magdalena Śliwka-Kaszyńska
A multi-tool analytical practice was used for the characterisation of a 16th century carpet manufactured in Cairo. A mild extraction method with hydrofluoric acid has been evaluated in order to isolate intact flavonoids and their glycosides, anthraquinones, tannins, and indigoids from fibre samples. High-performance liquid chromatography coupled to spectroscopic and mass spectrometric detectors was used for the identification of possible marker compounds with special attention paid to natural dyes present in the historical samples...
February 6, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29407744/iron-plaque-formation-and-heavy-metal-uptake-in-spartina-alterniflora-at-different-tidal-levels-and-waterlogging-conditions
#11
Yan Xu, Xiangli Sun, Qiqiong Zhang, Xiuzhen Li, Zhongzheng Yan
Tidal flat elevation in the estuarine wetland determines the tidal flooding time and flooding frequency, which will inevitably affect the formation of iron plaque and accumulations of heavy metals (HMs) in wetland plants. The present study investigated the formation of iron plaque and HM's (copper, zinc, lead, and chromium) accumulation in S. alterniflora, a typical estuarine wetland species, at different tidal flat elevations (low, middle and high) in filed and at different time (3, 6, 9, 12 h per day) of waterlogging treatment in greenhouse conditions...
May 30, 2018: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29367976/hierarchically-structured-multi-shell-nanotube-arrays-by-self-assembly-for-efficient-water-oxidation
#12
Steffen Czioska, Jianying Wang, Xue Teng, Shangshang Zuo, Songhai Xie, Zuofeng Chen
Photosynthesis in plants occurs at structures which form by self-assembly under ambient conditions, while catalysts used for artificial photosynthesis normally need special conditions like high pressure or temperature. Herein, a facile and cost effective way for the synthesis of a highly complex and efficient oxygen evolution reaction (OER) catalyst, formed solely by self-assembly in solution, is presented. Without the need for any instrumentation except for a glass beaker, highly active nickel-iron-copper multi-shell nanotube arrays are produced by immersion of a copper plate in three different solutions...
January 25, 2018: Nanoscale
https://www.readbyqxmd.com/read/29306091/remediation-of-incomplete-nitrification-and-capacity-increase-of-biofilters-at-different-drinking-water-treatment-plants-through-copper-dosing
#13
Florian B Wagner, Peter Borch Nielsen, Rasmus Boe-Hansen, Hans-Jørgen Albrechtsen
Drinking water treatment plants based on groundwater may suffer from incomplete ammonium removal, which deteriorates drinking water quality and constrains water utilities in the operation of their plants. Ammonium is normally removed through nitrification in biological granular media filters, and recent studies have demonstrated that dosing of copper can stimulate the removal of ammonium. Here, we investigated if copper dosing could generically improve ammonium removal of biofilters, at treatment plants with different characteristics...
April 1, 2018: Water Research
https://www.readbyqxmd.com/read/29305420/-in-vitro-reconstitution-functional-dissection-and-mutational-analysis-of-metal-ion-transport-by-mitoferrin-1
#14
Eric T Christenson, Austin S Gallegos, Anirban Banerjee
Iron is universally important to cellular metabolism, and mitoferrin-1 and -2 have been proposed to be the iron importers of mitochondria, the cell's assembly plant of heme and iron-sulfur clusters. These iron-containing prosthetic groups are critical for a host of physiological processes ranging from oxygen transport and energy consumption to maintaining protein structural integrity. Mitoferrin-1 (Mfrn1) belongs to the mitochondrial carrier (MC) family and is atypical given its putative metallic cargo; most MCs transport nucleotides, amino acids, or other small- to medium-size metabolites...
March 9, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29229180/copper-slag-as-a-catalyst-for-mercury-oxidation-in-coal-combustion-flue-gas
#15
Hailong Li, Weilin Zhang, Jun Wang, Zequn Yang, Liqing Li, Kaimin Shih
Copper slag is a byproduct of the pyrometallurgical smelting of copper concentrate. It was used in this study to catalyze elemental mercury (Hg0 ) oxidation in simulated coal combustion flue gas. The copper slag exhibited excellent catalytic performance in Hg0 oxidation at temperatures between 200 °C and 300 °C. At the most optimal temperature of 250 °C, a Hg0 oxidation efficiency of 93.8% was achieved under simulated coal combustion flue gas with both a high Hg0 concentration and a high gas hourly space velocity of 128,000 h-1 ...
April 2018: Waste Management
https://www.readbyqxmd.com/read/29177784/how-tapeworm-infection-and-consumption-of-a-cd-and-zn-hyperaccumulating-plant-may-affect-cu-fe-and-mn-concentrations-in-an-animal-a-plant-consumer-and-tapeworm-host
#16
Ivana Jankovská, Vladislav Sloup, Jiřina Száková, Jan Magdálek, Stanislava Nechybová, Pavla Peřinková, Iva Langrová
This study evaluated the effects of a hyperaccumulator plant (Arabidopsis halleri), containing surplus of cadmium (Cd) and zinc (Zn) and being an admixture to the rat feed, on concentrations of copper (Cu), iron (Fe), and manganese (Mn) in the tissues of experimental rats infected/uninfected with the tapeworm (Hymenolepis diminuta). Male Wistar rats were divided into three groups (00, P0, and PT); the P0 and PT animals were fed a standard mixture for rats (ST-1) supplemented with the plant A. halleri at a weekly Zn and Cd dosage of 123 and 1 mg, respectively...
February 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29109370/olive-olea-europaea-l-biophenols-a-nutriceutical-against-oxidative-stress-in-sh-sy5y-cells
#17
Syed Haris Omar, Philip G Kerr, Christopher J Scott, Adam S Hamlin, Hassan K Obied
Plant biophenols have been shown to be effective in the modulation of Alzheimer's disease (AD) pathology resulting from free radical-induced oxidative stress and imbalance of the redox chemistry of transition metal ions (e.g., iron and copper). On the basis of earlier reported pharmacological activities, olive biophenols would also be expected to have anti-Alzheimer's activity. In the present study, the antioxidant activity of individual olive biophenols (viz. caffeic acid, hydroxytyrosol, oleuropein, verbascoside, quercetin, rutin and luteolin) were evaluated using superoxide radical scavenging activity (SOR), hydrogen peroxide (H₂O₂) scavenging activity, and ferric reducing ability of plasma (FRAP) assays...
October 29, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29047057/strategies-of-heavy-metal-uptake-by-three-armeria-species-growing-on-different-geological-substrates-in-serbia
#18
Gordana Tomović, Uroš Buzurović, Sanja Đurović, Dražen Vicić, Nevena Mihailović, Ksenija Jakovljević
This study surveyed three species of the genus Armeria Willd. from five ultramafic outcrops, two non-ultramafic (schist) soils, and one tailing heap of an abandoned iron-copper mine from Serbia. Similarities and differences among the three Armeria species growing on different geological substrates in the ability to control uptake and translocate nine metals were examined. Chemical characteristics of the soil and plant samples (concentrations of P2 O5, K2 O, Ca, Fe, Mn, Ni, Zn, Cu, Cr, Co, Cd, and Pb) are presented...
January 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29032515/oxidative-stress-and-heavy-metals-in-plants
#19
Radka Fryzova, Miroslav Pohanka, Pavla Martinkova, Hana Cihlarova, Martin Brtnicky, Jan Hladky, Jindrich Kynicky
Oxidative stress is a pathological process related to not only animal kingdom but also plants. Regarding oxidative stress in plants, heavy metals are frequently discussed as causative stimuli with relevance to ecology. Because heavy metals have broad technological importance, they can easily contaminate the environment. Much of previous effort regarding the harmful impact of the heavy metals was given to their toxicology in the animals and humans. Their implication in plant pathogeneses is less known and remains underestimated...
2018: Reviews of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28987987/a-sequential-treatment-of-intermediate-tropical-landfill-leachate-using-a-sequencing-batch-reactor-sbr-and-coagulation
#20
Zi Jun Yong, Mohammed J K Bashir, Choon Aun Ng, Sumathi Sethupathi, Jun-Wei Lim
The increase in landfill leachate generation is due to the increase of municipal solid waste (MSW) as global development continues. Landfill leachate has constantly been the most challenging issue in MSW management as it contains high amount of organic and inorganic compounds that might cause pollution to water resources. Biologically treated landfill leachate often fails to fulfill the regulatory discharge standards. Thus, to prevent environmental pollution, many landfill leachate treatment plants involve multiple stages treatment process...
January 1, 2018: Journal of Environmental Management
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