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https://www.readbyqxmd.com/read/28319742/biochar-provides-a-safe-and-value-added-solution-for-hyperaccumulating-plant-disposal-a-case-study-of-phytolacca-acinosa-roxb-phytolaccaceae
#1
Shengsen Wang, Bin Gao, Yuncong Li, Yong Sik Ok, Chaofeng Shen, Shengguo Xue
In this work, an innovative approach using biochar technology for hyperaccumulator disposal was developed and evaluated. The heavy metal enriched P. acinosa biomass (PBM) was pyrolyzed to produce biochar (PBC). Both PBM and PBC were characterized with X-ray diffraction (XRD) for crystal phases, scanning electron microscopy (SEM) for surface topography, and analyzed for elemental composition and mobility. The results revealed that whewellite, a dominant crystal form in biomass, was decomposed to calcite after pyrolysis...
February 27, 2017: Chemosphere
https://www.readbyqxmd.com/read/28318693/the-influence-of-dual-substrate-layer-extensive-green-roofs-on-rainwater-runoff-quantity-and-quality
#2
Xiaoou Wang, Yimei Tian, Xinhua Zhao
This study investigates the ability of dual-substrate-layer extensive green roofs to retain rainwater and reduce pollutant leaching. The substrates in dual-substrate-layer green roofs consist of an upper organic nutrition layer for plant growth and a lower inorganic adsorption layer for water retention and pollutant reduction. One traditional single-substrate-layer extensive green roof was built for comparison with dual-substrate-layer green roofs. During the experimental period, dual-substrate-layer green roofs supported better natural vegetation growth, with coverage exceeding 90%, while the coverage in single-substrate-layer green roof was over 80%...
March 16, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28306499/a-double-click-for-illuminating-plant-cell-walls
#3
Yuki Tobimatsu
In this issue of Cell Chemical Biology, Lion et al. (2017) report a multiplexed labeling method to visualize plant cell wall lignification in vivo. This approach uses two different lignin precursor analogs tagged with azide and alkyne reporters that can be independently incorporated into cell walls, then differentially derivatized in vivo via two bioorthogonal click reactions: strain-promoted and copper-assisted azide-alkyne cycloadditions.
March 16, 2017: Cell Chemical Biology
https://www.readbyqxmd.com/read/28303526/a-herbivore-tag-and-trace-system-reveals-contact-and-density-dependent-repellence-of-a-root-toxin
#4
Zoe Bont, Carla Arce, Meret Huber, Wei Huang, Adrien Mestrot, Craig J Sturrock, Matthias Erb
Foraging behavior of root feeding organisms strongly affects plant-environment-interactions and ecosystem processes. However, the impact of plant chemistry on root herbivore movement in the soil is poorly understood. Here, we apply a simple technique to trace the movement of soil-dwelling insects in their habitats without disturbing or restricting their interactions with host plants. We tagged the root feeding larvae of Melolontha melolontha with a copper ring and repeatedly located their position in relation to their preferred host plant, Taraxacum officinale, using a commercial metal detector...
March 16, 2017: Journal of Chemical Ecology
https://www.readbyqxmd.com/read/28299516/effects-of-nitrogen-and-water-addition-on-trace-element-stoichiometry-in-five-grassland-species
#5
Jiangping Cai, Jacob Weiner, Ruzhen Wang, Wentao Luo, Yongyong Zhang, Heyong Liu, Zhuwen Xu, Hui Li, Yuge Zhang, Yong Jiang
A 9-year manipulative experiment with nitrogen (N) and water addition, simulating increasing N deposition and changing precipitation regime, was conducted to investigate the bioavailability of trace elements, iron (Fe), manganese (Mn), copper (Cu), and zinc (Zn) in soil, and their uptake by plants under the two environmental change factors in a semi-arid grassland of Inner Mongolia. We measured concentrations of trace elements in soil and in foliage of five common herbaceous species including 3 forbs and 2 grasses...
March 15, 2017: Journal of Plant Research
https://www.readbyqxmd.com/read/28292015/evaluation-of-antioxidant-and-anticancer-activity-of-copper-oxide-nanoparticles-synthesized-using-medicinally-important-plant-extracts
#6
Dilaveez Rehana, D Mahendiran, R Senthil Kumar, A Kalilur Rahiman
Copper oxide (CuO) nanoparticles were synthesized by green chemistry approach using different plant extracts obtained from the leaves of Azadirachta indica, Hibiscus rosa-sinensis, Murraya koenigii, Moringa oleifera and Tamarindus indica. In order to compare their efficiency, the same copper oxide nanoparticles was also synthesized by chemical method. Phytochemical screening of the leaf extracts showed the presence of carbohydrates, flavonoids, glycosides, phenolic compounds, saponins, tannins, proteins and amino acids...
March 10, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28285437/application-of-magnetic-methods-for-assessment-of-soil-restoration-in-the-vicinity-of-metallurgical-copper-processing-plant-in-bulgaria
#7
N Jordanova, E Petrovský, A Kapicka, D Jordanova, P Petrov
Copper ore mining and processing are among the most harmful anthropogenic influences for the environment and they are a subject of international and national law regulations. Recultivation of areas influenced by mining and processing industry is commonly applied and monitored in order to restore as much as possible the natural environment. In this study, environmental magnetic methods are applied in order to assess the degree of soil restoration in terms of soil development, after remediation of waste dump from Cu-processing plant...
April 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28278781/phytoremediation-potential-of-water-caltrop-trapa-natans-l-using-municipal-wastewater-of-the-activated-sludge-process-based-municipal-wastewater-treatment-plant
#8
Vinod Kumar, A K Chopra
Phytoremediation experiments were carried out to assess the phytoremediation potential of water caltrop (Trapa natans L.) using municipal wastewater collected from the activated sludge process- (ASP) based municipal wastewater treatment plant. The results revealed that T. natans significantly (P ≤ .05/P ≤ .01/P ≤ .001) reduced the contents of total dissolved solids (TDS), electrical conductivity (EC), biochemical oxygen demand (BOD5), chemical oxygen demand, total Kjeldahl nitrogen, phosphate ([Formula: see text]), sodium (Na(+)), potassium (K(+)), calcium (Ca(2+)), magnesium (Mg(2+)), cadmium (Cd), chromium (Cr), copper (Cu), iron (Fe), manganese (Mn), lead (Pb), zinc (Zn), standard plate count, and most probable number of the municipal wastewater after phytoremediation experiments...
February 22, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28277075/impact-of-three-different-fungicides-on-fungal-epi-and-endophytic-communities-of-common-bean-phaseolus-vulgaris-and-broad-bean-vicia-faba
#9
René Prior, Moritz Mittelbach, Dominik Begerow
In this study, the impacts of three different fungicides to fungal phyllosphere communities on broad bean (Vicia faba, Fabaceae) and common bean (Phaseolus vulgaris, Fabaceae) were analyzed. The fungicides included copper, sulfur, and azoxystrobin. The plants were sowed, grown, and treated under conditions occurring in conventional and organic farming. A culture-based approach was used to identify changes in the phyllosphere fungal community after the treatment. Different effects on species richness and growth index of the epiphytic and endophytic communities for common bean and broad bean could be shown...
March 3, 2017: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/28275969/metal-metalloid-content-in-plant-parts-and-soils-of-corylus-spp-influenced-by-mining-metallurgical-production-of-copper
#10
Ana A Radojevic, Snezana M Serbula, Tanja S Kalinovic, Jelena V Kalinovic, Mirjana M Steharnik, Jelena V Petrovic, Jelena S Milosavljevic
The town of Bor and its surroundings (Serbia) have been under environmental pollution for more than a century, due to exploitation of large copper deposits. Naturally present Corylus spp. were sampled in the surroundings of the mine and flotation tailings at 12 sites distributed in six zones with different pollution loads, under the assumption that all the zones were endangered except for the background. As, Cd, Co, Cr, Cu, Fe, Mn, Mo, Ni, Pb and Zn inputs from soil and the air were evaluated in plant parts, in terms of absorption, accumulation and indication abilities of Corylus spp...
March 8, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28273532/arsenic-uptake-by-lettuce-from-as-contaminated-soil-remediated-with-pteris-vittata-and-organic-amendment
#11
Letuzia M de Oliveira, Das Suchismita, Julia Gress, Bala Rathinasabapathi, Yanshan Chen, Lena Q Ma
Leaching of inorganic arsenic (As) from chromated copper arsenate (CCA)-treated wood may elevate soil As levels. Thus, an environmental concern arises regarding As accumulation in vegetables grown in these soils. In this study, a greenhouse experiment was conducted to investigate the ability of As-hyperaccumulator P. vittata and organic amendments in reducing As uptake by lettuce (Lactuca sativa) from a soil contaminated from CCA-treated wood (63.9 mg kg(-1) As). P. vittata was grown for 150 d in a CCA-contaminated soil amended with biochar, activated carbon or coffee grounds at 1%, followed by lettuce for another 55 d...
February 24, 2017: Chemosphere
https://www.readbyqxmd.com/read/28271249/photoactivation-and-relaxation-studies-on-the-cyanobacterial-orange-carotenoid-protein-in-the-presence-of-copper-ion
#12
Haijun Liu, Yue Lu, Benjamin Wolf, Rafael Saer, Jeremy D King, Robert E Blankenship
Photosynthesis starts with absorption of light energy by light-harvesting antenna complexes with subsequent production of energy-rich organic compounds. However, all photosynthetic organisms face the challenge of excess photochemical conversion capacity. In cyanobacteria, non-photochemical quenching (NPQ) performed by the orange carotenoid protein (OCP) is one of the most important mechanisms to regulate the light energy captured by light-harvesting antennas. This regulation permits the cell to meet its cellular energy requirements and at the same time protects the photosynthetic apparatus under fluctuating light conditions...
March 7, 2017: Photosynthesis Research
https://www.readbyqxmd.com/read/28265871/distribution-and-mobility-of-lead-pb-copper-cu-zinc-zn-and-antimony-sb-from-ammunition-residues-on-shooting-ranges-for-small-arms-located-on-mires
#13
Espen Mariussen, Ida Vaa Johnsen, Arnljot Einride Strømseng
An environmental survey was performed on shooting ranges for small arms located on minerotrophic mires. The highest mean concentrations of Pb (13 g/kg), Cu (5.2 g/kg), Zn (1.1 g/kg), and Sb (0.83 g/kg) in the top soil were from a range located on a poor minerotrophic and acidic mire. This range had also the highest concentrations of Pb, Cu, Zn, and Sb in discharge water (0.18 mg/L Pb, 0.42 mg/L Cu, 0.63 mg/L Zn, and 65 μg/L Sb) and subsurface soil water (2.5 mg/L Pb, 0.9 mg/L Cu, 1.6 mg/L Zn, and 0...
March 6, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28262560/bliss-a-bioorthogonal-dual-labeling-strategy-to-unravel-lignification-dynamics-in-plants
#14
Cedric Lion, Clémence Simon, Brigitte Huss, Anne-Sophie Blervacq, Louis Tirot, Djadidi Toybou, Corentin Spriet, Christian Slomianny, Yann Guerardel, Simon Hawkins, Christophe Biot
A better in vivo understanding of lignin formation within plant cell walls will contribute to improving the valorization of plant-derived biomass. Although bioorthogonal chemistry provides a promising platform to study the lignification process, methodologies that simultaneously detect multiple chemical reporters in living organisms are still scarce. Here, we have developed an original bioorthogonal labeling imaging sequential strategy (BLISS) to visualize and analyze the incorporation of both p-hydroxyphenyl (H) and guaiacyl (G) units into lignin in vivo with a combination of strain-promoted and copper-catalyzed azide-alkyne cycloadditions...
March 16, 2017: Cell Chemical Biology
https://www.readbyqxmd.com/read/28260522/medicinal-and-healthical-applications-of-tinospora-cordifolia-guduchi-a-miraculous-herb-countering-various-diseases-disorders-and-potentials-as-an-immune-booster
#15
Kuldeep Dhama Dhama, Swati Sachan, Rekha Khandia, Ashok Munjal, Hafiz M N Iqbal, Shyma K Latheef, Kumaragurubaran Karthik, Hari Abdul Samad, Ruchi Tiwari, Maryam Dadar
BACKGROUND: Plants have been known as an integral part of traditional medicine because of their phytoconstituents with their miraculous substances. Tinospora cordifolia (Guduchi/Giloy) is one such plant having pharmacological functions and medicinal values due to its several constituents such as terpenes, glycosides, alkaloids, steroids and flavonoids. Thus, it has been rightly mentioned in old texts as "Amrita". OBJECTIVE: The objective of the present review is to extend the current knowledge, importance and beneficial pharmacological applications of Guduchi in humans for safeguarding various health issues...
February 28, 2017: Recent Patents on Endocrine, Metabolic & Immune Drug Discovery
https://www.readbyqxmd.com/read/28258429/reclamation-of-cr-contaminated-or-cu-contaminated-agricultural-soils-using-sunflower-and-chelants
#16
Angela Cicatelli, Francesco Guarino, Stefano Castiglione
Chromium (Cr) and copper (Cu) are pollutants with a strong environmental impact. "Green biotechnology" as phytoremediation represents a sustainability opportunity for soil reclamation. In this study, we evaluated the possibility to reclaim agricultural soils located in the Solofrana valley, contaminated by Cr or Cu. Chromium contamination derives by repeated flooding events of Solofrana rivers containing Cr because of leather tanning plants, while Cu soil pollution was due to the use of Cu-rich pesticides in agriculture...
March 3, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28255819/the-ecological-risk-source-identification-and-pollution-assessment-of-heavy-metals-in-road-dust-a-case-study-in-rafsanjan-se-iran
#17
Milad Mirzaei Aminiyan, Mohammed Baalousha, Rouhollah Mousavi, Farzad Mirzaei Aminiyan, Hamideh Hosseini, Amin Heydariyan
Heavy metal (HM) contamination in road dust is a potential environmental and human health threat. The sources, concentrations, spatial distribution, and ecological risk of As, Cd, Cu, Cr, Ni, Pb, and Zn in road dust in Rafsanjan City, Iran, were investigated. Pollution was assessed using the enrichment factor (EF). The potentially harmful effects of HMs were evaluated by calculating the potential ecological risk factor of individual metals (E r ) and of multiple metals (RI) using the Hakanson method. Correlation and principal component analyses (PCA) were applied to identify HM pollution sources...
March 2, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28251535/copper-tolerant-rhizosphere-bacteria-characterization-and-assessment-of-plant-growth-promoting-factors
#18
Manohari Rathi, Yogalakshmi Kadapakkam Nandabalan
Remediation of heavy metal contaminated soil is a major problem or concern worldwide. Heavy metal accumulation in the soil is increasing day by day by industries, mines, agriculture, fuel combustion and municipal waste discharge. Such contaminated soils harbour a large number of resistant microbial populations. Screening and isolation of such microbes would be utilized for natural remediation of metal contaminated soils. Therefore, in the present study, highly copper-tolerant bacteria from rhizosphere soil of Cynodon dactylon grown in brass effluent contaminated soil were isolated and assessed for plant growth promoting factors...
March 1, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28238459/linking-sources-to-early-effects-by-profiling-urine-metabolome-of-residents-living-near-oil-refineries-and-coal-fired-power-plants
#19
Chi-Hsin Sally Chen, Tzu-Hsuen Yuan, Ruei-Hao Shie, Kuen-Yuh Wu, Chang-Chuan Chan
BACKGROUND: This study aims at identifying metabolic changes linking external exposure to industrial air toxics with oxidative stress biomarkers. METHODS: We classified 252 study subjects as 111 high vs. 141 low exposure subjects by the distance from their homes to the two main emission sources, oil refineries and coal-fired power plants. We estimated individual's external exposure to heavy metals and polycyclic aromatic hydrocarbons (PAHs) by dispersion and kriging models, respectively...
February 23, 2017: Environment International
https://www.readbyqxmd.com/read/28237674/endophytic-fungus-purpureocillium-sp-a5-protect-mangrove-plant-kandelia-candel-under-copper-stress
#20
Bin Gong, Guixiang Liu, Rquan Liao, Jingjing Song, Hong Zhang
Mangrove is an important ecosystem in the world. Mangrove ecosystems have a large capacity in retaining heavy metals, and now they are usually considered as sinks for heavy metals. However, the mechanism of why the soil of mangrove ecosystems can retain heavy metal is not certain. In this research, endophytic fungus Purpureocillium sp. A5 was isolated and identified from the roots of Kandelia candel. When this fungus was added, it protected the growth of K. candel under Cu stress. This can be illustrated by analyzing chlorophyll A and B, RWC and WSD to leaves of K...
February 9, 2017: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
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