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https://www.readbyqxmd.com/read/29453069/combined-effect-of-copper-and-hydrodynamic-conditions-on-myriophyllum-alterniflorum-biomarkers
#1
Maha Krayem, Véronique Deluchat, Philippe Hourdin, Patrice Fondanèche, Florence Lecavelier Des Etangs, Véronique Kazpard, Christian Moesch, Pascal Labrousse
The aim of this study is to determine the combined effect of copper and hydrodynamic conditions on the response of certain biomarkers of an aquatic macrophyte, namely Myriophyllum alterniflorum. Watermilfoil biomarkers are monitored in a synthetic medium enriched or not with copper (100 μg.L -1 ) for 21 days in aquarium systems (150 L), under three hydrodynamic conditions: laminar, turbulent, and calm. The studied biomarkers are: respiratory and photosynthetic activities; concentrations of chlorophyll a, b and carotenoids; osmotic potential; hydrogen peroxide content; and growth...
February 9, 2018: Chemosphere
https://www.readbyqxmd.com/read/29453062/heavy-metal-accumulation-risk-assessment-and-integrated-biomarker-responses-of-local-vegetables-a-case-study-along-the-le-an-river
#2
Yong Ji, Peijun Wu, Jie Zhang, Jun Zhang, Youfeng Zhou, Yongwen Peng, Shifeng Zhang, Gaotang Cai, Guiqing Gao
In this research, Ganzhou Chinese Cabbage (Brassica rapa pekinensis), Native Purple Garlic (Allium sativum L) and Leping Radish (Raphanus sativus L) widely planted and distributed along the Le'an River were chosen in the present study. Soil physical-chemical properties, nutrients contents as well as heavy metals elements accumulated in both soils and vegetables collected from 24 sites were analyzed by lab analysis combined with statistical method which was also used for calculation of contamination factor, pollution indexes and hazardous index...
February 8, 2018: Chemosphere
https://www.readbyqxmd.com/read/29448175/metals-in-mangrove-ecosystems-and-associated-biota-a-global-perspective
#3
REVIEW
Rasika Kulkarni, Deepti Deobagkar, Smita Zinjarde
Mangrove forests prevalent along the intertidal regions of tropical and sub-tropical coastlines are inimitable and dynamic ecosystems. They protect and stabilize coastal areas from deleterious consequences of natural disasters such as hurricanes and tsunamis. Although there are reviews on ecological aspects, industrial uses of mangrove-associated microorganisms and occurrence of pollutants in a region-specific manner, there is no exclusive review detailing the incidence of metals in mangrove sediments and associated biota in these ecosystems on a global level...
February 12, 2018: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29447378/trace-metal-metabolism-in-plants
#4
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/29443531/application-of-copper-chitosan-nanoparticles-stimulate-growth-and-induce-resistance-in-finger-millet-eleusine-coracana-gaertn-plants-against-blast-disease
#5
Muthukrishnan Sathiyabama, Appu Manikandan
Copper-chitosan nanoparticle (CuChNp) was synthesized and used to study its effect on finger millet plant as a model plant system. Our objective was to explore the efficacy of CuChNp application to control blast disease of finger millet. CuChNp was applied to finger millet either as a foliar spray or as a combined application (involving seed coat and foliar spray). Both the application methods enhanced growth profile of finger millet plants and increased yield. The increased yield was nearly 89% in combined application method...
February 14, 2018: Journal of Agricultural and Food Chemistry
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
#6
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/29407834/the-insects-as-an-assessment-tool-of-ecotoxicology-associated-with-metal-toxic-plants
#7
Rafia Azmat, Sumeira Moin, Ailyan Saleem
In this article, the assessment of lethal effects of Copper (Cu) on Luffa acutangula and Spinacia oleracea plants investigated in relation to the presence of insect species Oxycarenus hyalinipennis. The analysis of Cu-treated plants displays the information of rapid growth of Oxycarenus hyalinipennis species in triplicate. However, results showed that the impact of metal toxicity appeared as the reduced growth rate of plants, and dense growth of the insect species Oxycarenus halinipennis followed by the chewing/degradation of the toxic plant...
February 2, 2018: Chemosphere
https://www.readbyqxmd.com/read/29407744/iron-plaque-formation-and-heavy-metal-uptake-in-spartina-alterniflora-at-different-tidal-levels-and-waterlogging-conditions
#8
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...
February 5, 2018: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29398834/oxidative-enzymes-activity-during-abiotic-and-biotic-stresses-in-zea-mays-leaves-and-roots-exposed-to-cu-methyl-jasmonate-and-trigonotylus-caelestialium
#9
Agnieszka Hanaka, Lech Lechowski, Magdalena Mroczek-Zdyrska, Joanna Strubińska
The activities of antioxidative enzymes, i.e. superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), and guaiacol peroxidase (GPX), in the leaves and roots of Zea mays L. plants exposed to abiotic (methyl jasmonate, MJ, or/and copper, Cu) and biotic (Trigonotylus caelestialium) factors were examined. The contribution of MJ as a signal molecule in the defense mechanism against abiotic and biotic stresses was studied. All plants were cultivated hydroponically and divided into three groups: not treated by abiotic factors (control), treated by MJ only (MJ) and by MJ and Cu (MJ + Cu) and in each group half of the plants were exposed to T...
February 2018: Physiology and Molecular Biology of Plants: An International Journal of Functional Plant Biology
https://www.readbyqxmd.com/read/29396672/copper-influence-on-bank-vole-s-myodes-glareolus-sexual-behavior
#10
Agata Miska-Schramm, Joanna Kapusta, Małgorzata Kruczek
The impact of human activity on the environment has led to a steady increase of the amounts of copper in the ecosystems. This element accumulates in plants and water, potentially exposing rodents to its harmful effects. In industrial districts, a decrease in the density of small rodent populations has been observed. This decline may be caused by many factors, including mortality, decreased fertility, or impaired sexual behavior. The decline in the reproductive abilities of small rodents after copper exposure was demonstrated in our previous work (Miska-Schramm A, Kruczek M, Kapusta J, Ecotoxicology 23:1546-1554, 2014)...
February 2, 2018: Ecotoxicology
https://www.readbyqxmd.com/read/29396349/assessing-the-efficiency-of-a-coastal-managed-aquifer-recharge-mar-system-in-cyprus
#11
Ourania Tzoraki, Zoi Dokou, George Christodoulou, Petros Gaganis, George Karatzas
Managed Aquifer Recharge (MAR) is becoming an attractive water management option, with more than 223 sites operating in European countries. The quality of the produced water, available for drinking or irrigation processes is strongly depended on the aquifer's hydrogeochemical characteristics and on the MAR system design and operation. The objective of this project is the assessment of the operation efficiency of a MAR system in Cyprus. The coupling of alternative methodologies is used such as water quality monitoring, micro-scale sediment sorption experiments, simulation of groundwater flow and phosphate and copper transport in the subsurface using the FEFLOW model and evaluation of the observed change in the chemical composition of water due to mixing using the geochemical model PHREEQC...
January 21, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29387898/the-superoxide-dismutase-genes-might-be-required-for-appropriate-development-of-the-ovule-after-fertilization-in-xanthoceras-sorbifolium
#12
Qingyuan Zhou, Qing Cai
Superoxide dismutase genes were expressed differentially along with developmental stages of fertilized ovules in Xanthoceras sorbifolium, and the XsMSD gene silencing resulted in the arrest of fertilized ovule development. A very small percentage of mature fruits (ca. 5%) are produced relative to the number of bisexual flowers in Xanthoceras sorbifolium because seeds and fruits are aborted at early stages of development after pollination. Reactive oxygen species (ROS) in plants are implicated in an extensive range of biological processes, such as programmed cell death and senescence...
January 31, 2018: Plant Cell Reports
https://www.readbyqxmd.com/read/29383450/genome-wide-identification-classification-and-expression-of-phytocyanins-in-populus-trichocarpa
#13
Shuangshuang Luo, Wenfang Hu, Yue Wang, Bin Liu, Hanwei Yan, Yan Xiang
74 phytocyanin genes were identified in the Populus trichocarpa genome. Phylogenetic analysis grouped the PC proteins into four subfamilies (UCs, PLCs, SCs, and ENODLs). Closely related PC proteins share similar motifs, implying similar functions. Expression profiles of PtPC genes were analyzed in response to drought and salt-stress. Phytocyanins (PCs) are blue copper proteins associated with electron carrier activity that have a large influence on plant growth and resistance. The majority of PCs are chimeric arabinogalactan proteins (AGPs)...
January 30, 2018: Planta
https://www.readbyqxmd.com/read/29380203/cd-and-cu-accumulation-translocation-and-tolerance-in-populus-alba-clone-villafranca-in-autotrophic-in-vitro-screening
#14
Morena Marzilli, Patrick Di Santo, Giuseppe Palumbo, Lucia Maiuro, Bruno Paura, Roberto Tognetti, Claudia Cocozza
The present study investigated accumulation, translocation and tolerance of autotrophic Populus alba clone "Villafranca" in response to excess concentrations of cadmium (Cd) and copper (Cu) provided to the plants. For this purpose, increasing concentrations of Cd (0, 5, 50 and 250 μM) and Cu (0, 5, 50, 250 and 500 μM) were administered to the growth medium in which micropropagated poplar plantlets were exposed to metal treatments for 15 days. Filter bags, instead of the conventional in vitro screening, were applied to improve the experimental design...
January 30, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29374376/rhizospheric-effects-on-the-microbial-community-of-e-waste-contaminated-soils-using-phospholipid-fatty-acid-and-isoprenoid-glycerol-dialkyl-glycerol-tetraether-analyses
#15
Mengke Song, Zhineng Cheng, Chunling Luo, Longfei Jiang, Dayi Zhang, Hua Yin, Gan Zhang
We performed the study of rhizospheric effects on soil microbial community structure, including bacteria, fungi, actinomycete, and archaea, at an electronic waste (e-waste) recycling site by analyzing the phospholipid fatty acid (PLFA) and isoprenoid glycerol dialkyl glycerol tetraether (GDGT) contents. By comparing PLFA and isoprenoid GDGT profiles of rhizospheric and surrounding bulk soils of 11 crop species, we observed distinct microbial community structures. The total PLFA concentration was significantly higher in rhizospheric soils than in non-rhizospheric soils, whereas no obvious difference was found in the total isoprenoid GDGT concentrations...
January 26, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29374264/oxidative-stress-induced-by-cu-nutritional-disorders-in-citrus-depends-on-nitrogen-and-calcium-availability
#16
Franz Walter Rieger Hippler, Rodrigo Marcelli Boaretto, Veronica Lorena Dovis, José Antônio Quaggio, Ricardo Antunes Azevedo, Dirceu Mattos-Jr
Nutritional stress caused by copper (Cu) deficiency or toxicity affects fruit production of citrus orchards worldwide, but this could be minimised by fine-tuned fertilisation in the orchards. Two experiments were performed aiming to evaluate the photosynthetic capacity and the antioxidant enzyme activities of Swingle citrumelo seedlings, grown in nutrient solution (NS) with two levels of nitrogen (N) in the first experiment (adequate-N and high-N) and two levels of calcium (Ca) in the second (low-Ca and adequate-Ca)...
January 26, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29367976/hierarchically-structured-multi-shell-nanotube-arrays-by-self-assembly-for-efficient-water-oxidation
#17
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/29367789/stimulation-of-heavy-metal-adsorption-process-by-using-a-strong-magnetic-field
#18
Krzysztof Rajczykowski, Krzysztof Loska
The adsorption process is one of the most important techniques of water and wastewater treatment technology. Therefore, there are many methods allowing to improve the effectiveness of these processes based mainly on the chemical modification of adsorbents. However, they are always associated with the necessity of introducing an additional wastes or sewage to the environment. That is why a purpose of the presented was to investigate an innovative and noninvasive adsorption supporting method based on the using of a static magnetic field...
2018: Water, Air, and Soil Pollution
https://www.readbyqxmd.com/read/29367113/distribution-and-transfer-of-potentially-toxic-metal-loid-s-in-juncus-effusus-from-the-indigenous-zinc-smelting-area-northwest-region-of-guizhou-province-china
#19
Yishu Peng, Jun Chen, Huairui Wei, Shibin Li, Tao Jin, Ruidong Yang
We collected samples (i.e., the aerial parts and roots of Juncus effusus and their growth media) in the indigenous zinc smelting area in the northwest region of Guizhou Province, China, and we measured and analyzed potentially toxic metal(loid)s (arsenic, As; cadmium, Cd; chromium, Cr; copper, Cu; mercury, Hg; lead, Pb and zinc, Zn) in these samples. The results include the following: First, there is a high concentration of one or more potentially toxic metal(loid)s in the slag and surrounding soil in the research area...
January 19, 2018: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29362078/ectopic-expression-of-sspete2-a-plastocyanin-from-suaeda-salsa-improves-plant-tolerance-to-oxidative-stress
#20
Xin-Tong Zhou, Fang Wang, Yin-Ping Ma, Li-Jia Jia, Ning Liu, Hai-Yun Wang, Pan Zhao, Gui-Xian Xia, Nai-Qin Zhong
Accumulating evidence indicates that plant plastocyanin is involved in copper homeostasis, yet the physiological relevance remains elusive. In this study, we found that a plastocyanin gene (SsPETE2) from euhalophyte Suaeda salsa possessed a novel antioxidant function, which was associated with the copper-chelating activity of SsPETE2. In S. salsa, expression of SsPETE2 increased in response to oxidative stress and ectopic expression of SsPETE2 in Arabidopsis enhanced the antioxidant ability of the transgenic plants...
March 2018: Plant Science: An International Journal of Experimental Plant Biology
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