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https://www.readbyqxmd.com/read/28528502/influence-of-amendments-on-cd-and-zn-uptake-and-accumulation-in-rice-oryza-sativa-l-in-contaminated-soil
#1
Patompong Saengwilai, Weeradej Meeinkuirt, John Pichtel, Preeyaporn Koedrith
Cadmium is a toxic metallic element that poses serious human health risks via consumption of contaminated agricultural products. The effect of mixtures of dicalcium phosphate and organic amendments, namely cow manure (MD) and leonardite (LD), on Cd and Zn uptake of three rice cultivars (KDML105, KD53, and PSL2) was examined in mesocosm experiments. Plant growth, Cd and Zn accumulation, and physicochemical properties of the test soils were investigated before and after plant harvest. Amendment application was found to improve soil physicochemical properties; in particular, soil organic matter content and nutrient (N, P, K, Ca, and Mg) concentrations increased significantly...
May 20, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28523618/the-effect-of-sewage-sludge-on-heavy-metal-concentrations-in-wheat-plant-triticum-aestivum-l
#2
Fatemeh Shahbazi, Somayeh Ghasemi, Hamid Sodaiezadeh, Kobra Ayaseh, Rasool Zamani-Ahmadmahmoodi
The use of sewage sludge in agricultural soils can improve soil physical and chemical properties and soil fertility by increasing organic materials; however, the presence of heavy metals in sewage sludge is a significant problem for the quality of agricultural products and the environment. Most heavy metals, due to their inactive nature, are stable and can affect human health. This study investigates the effect of sewage sludge on the concentration of copper, zinc, cadmium, lead, iron, and manganese in two varieties of wheat, i...
May 18, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28516356/morphology-ultrastructure-and-element-uptake-in-calophyllum-brasiliense-cambess-calophyllaceae-j-agardh-seedlings-under-cadmium-exposure
#3
Alezania Silva Pereira, Priscila Andressa Cortez, Alex-Alan Furtado de Almeida, Majeti Narashima Vara Prasad, Marcel Giovanni Costa França, Maura da Cunha, Raildo Mota de Jesus, Pedro Antônio Oliveira Mangabeira
Cadmium (Cd) is a metal known for its genotoxicity and cytotoxicity, much concerned for its potential environmental and human health impacts. This study evaluates the toxic effect of Cd in Calophyllum brasiliense plants. The plants were cultivated for 30 days in full nutrient solution in order to adapt, and for 15 days in nutrient solution without Cd or with 4, 8, 16, and 32 μmol Cd L(-1). Anatomical analysis of the leaf showed no significant effects of Cd on epidermal thickness in abaxial and adaxial sides, palisade, and spongy parenchyma...
May 17, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28516261/-metals-and-their-compounds-as-contaminants-in-food-arsenic-cadmium-lead-and-aluminum
#4
REVIEW
Andrea Hartwig, Gunnar Jahnke
Metals and their compounds are ubiquitously distributed in the environment, thus reaching plant and animal derived food. While actual exposure levels in Europe do not give rise to concern for acute toxicity, chronic toxicity of some metals and metalloids cannot be completely ruled out. Thus, in the case of inorganic arsenic, an elevated risk of carcinogenicity in different organs cannot be excluded even under actual dietary exposure conditions. In the case of cadmium, nephrotoxicity may be a particular problem for certain subgroups, such as children...
May 17, 2017: Bundesgesundheitsblatt, Gesundheitsforschung, Gesundheitsschutz
https://www.readbyqxmd.com/read/28508171/over-expression-of-tobacco-ubc1-encoding-a-ubiquitin-conjugating-enzyme-increases-cadmium-tolerance-by-activating-the-20s-26s-proteasome-and-by-decreasing-cd-accumulation-and-oxidative-stress-in-tobacco-nicotiana-tabacum
#5
Ramin Bahmani, DongGwan Kim, Byoung Doo Lee, Seongbin Hwang
Ubiquitin (Ub)-conjugating enzyme (UBC, E2) receives Ub from Ub-activating enzyme (E1) and transfers it to target proteins, thereby playing a key role in Ub/26S proteasome-dependent proteolysis. UBC has been reported to be involved in tolerating abiotic stress in plants, including drought, salt, osmotic and water stresses. To isolate the genes involved in Cd tolerance, we transformed WT (wild-type) yeast Y800 with a tobacco cDNA expression library and isolated a tobacco cDNA, NtUBC1 (Ub-conjugating enzyme), that enhances cadmium tolerance...
May 15, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/28507557/exogenous-glutathione-enhances-mercury-tolerance-by-inhibiting-mercury-entry-into-plant-cells
#6
Yeon-Ok Kim, Hyeun-Jong Bae, Eunjin Cho, Hunseung Kang
Despite the increasing understanding of the crucial roles of glutathione (GSH) in cellular defense against heavy metal stress as well as oxidative stress, little is known about the functional role of exogenous GSH in mercury (Hg) tolerance in plants. Here, we provide compelling evidence that GSH contributes to Hg tolerance in diverse plants. Exogenous GSH did not mitigate the toxicity of cadmium (Cd), copper (Cu), or zinc (Zn), whereas application of exogenous GSH significantly promoted Hg tolerance during seed germination and seedling growth of Arabidopsis thaliana, tobacco, and pepper...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28502051/cadmium-impact-accumulation-and-detection-in-poplar-callus-cells
#7
Karin Kollárová, Zuzana Vatehová, Danica Kučerová, Desana Lišková
Effect of cadmium cations and their interaction with silicon cations was determined in poplar calli and expressed as changes in callus growth, cell viability and cadmium cation accumulation. Cell viability throughout culture versus cadmium cation accumulation in cells is discussed. At the same time, the study sought appropriate methods for cadmium cation detection in callus cells and also in experiments with low plant material (e.g. protoplasts). Cadmium cations were determined by atomic absorption spectroscopy and using fluorescence microscopy with a specific cadmium cation fluorescent dye...
May 13, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28502048/the-effects-of-cadmium-pulse-dosing-on-physiological-traits-and-growth-of-the-submerged-macrophyte-vallisneria-spinulosa-and-phytoplankton-biomass-a-mesocosm-study
#8
Hui Liu, Yu Cao, Wei Li, Zhao Zhang, Erik Jeppesen, Wei Wang
Pulse inputs of heavy metals are expected to increase with a higher frequency of extreme climate events (heavy rain), leading to stronger erosion of contaminated and fertilized farmland soils to freshwaters, with potentially adverse effects on lake ecosystems. We conducted a 5-month mesocosm study to elucidate the responses of the submerged macrophyte Vallisneria spinulosa and phytoplankton to four different doses of cadmium (Cd): 0 (control), 0.05, 0.5, and 5 g m(-2) (CK, I, II, and III, respectively) under mesotrophic conditions...
May 13, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28501770/effect-of-limestone-lignite-and-biochar-applied-alone-and-combined-on-cadmium-uptake-in-wheat-and-rice-under-rotation-in-an-effluent-irrigated-field
#9
Muhammad Zia Ur Rehman, Hinnan Khalid, Fatima Akmal, Shafaqat Ali, Muhammad Rizwan, Muhammad Farooq Qayyum, Muhammad Iqbal, Muhammad Usman Khalid, Muhammad Azhar
Cadmium (Cd) uptake and accumulation in crop plants, especially in wheat (Triticum aestivum) and rice (Oryza sativa) is one of the main concerns for food security worldwide. A field experiment was done to investigate the effects of limestone, lignite, and biochar on growth, physiology and Cd uptake in wheat and rice under rotation irrigated with raw effluents. Initially, each treatment was applied alone at 0.1% and combined at 0.05% each and wheat was grown in the field and then, after wheat harvesting, rice was grown in the same field without additional application of amendments...
May 11, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28500270/heavy-metals-induce-iron-deficiency-responses-at-different-hierarchic-and-regulatory-levels
#10
Alexandra Leskova, Ricardo Fabiano Hettwer Giehl, Anja Hartmann, Agáta Fargasová, Nicolaus von Wirén
In plants, the excess of several heavy metals mimics Fe deficiency-induced chlorosis indicating a disturbance in Fe homeostasis. To examine at which level heavy metals interfere with Fe-deficiency responses, we carried out an in-depth characterization of Fe-related physiological, regulatory and morphological responses in Arabidopsis thaliana exposed to heavy metals. Enhanced Zn uptake closely mimicked Fe deficiency by leading to low chlorophyll but high ferric-chelate reductase activity and coumarin release...
May 12, 2017: Plant Physiology
https://www.readbyqxmd.com/read/28498130/comparison-of-in-situ-dgt-measurement-with-ex-situ-methods-for-predicting-cadmium-bioavailability-in-soils-with-combined-pollution-to-biotas
#11
Peifang Wang, Cui Liu, Yu Yao, Chao Wang, Teng Wang, Ye Yuan, Jun Hou
To assess the capabilities of the different techniques in predicting Cadmium (Cd) bioavailability in Cd-contaminated soils with the addition of Zn, one in situ technique (diffusive gradients in thin films; DGT) was compared with soil solution concentration and four widely used single-step extraction methods (acetic acid, EDTA, sodium acetate and CaCl2). Wheat and maize were selected as tested species. The results demonstrated that single Cd-polluted soils inhibited the growth of wheat and maize significantly compared with control plants; the shoot and root biomasses of the plants both dropped significantly (P < 0...
May 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28494365/a-critical-review-on-effects-tolerance-mechanisms-and-management-of-cadmium-in-vegetables
#12
REVIEW
Muhammad Rizwan, Shafaqat Ali, Muhammad Adrees, Muhammad Ibrahim, Daniel C W Tsang, Muhammad Zia-Ur-Rehman, Zahir Ahmad Zahir, Jörg Rinklebe, Filip M G Tack, Yong Sik Ok
Cadmium (Cd) accumulation in vegetables is an important environmental issue that threatens human health globally. Understanding the response of vegetables to Cd stress and applying management strategies may help to reduce the Cd uptake by vegetables. The aim of the present review is to summarize the knowledge concerning the uptake and toxic effects of Cd in vegetables and the different management strategies to combat Cd stress in vegetables. Leafy vegetables grown in Cd contaminated soils potentially accumulate higher concentrations of Cd, posing a threat to food commodities...
May 2, 2017: Chemosphere
https://www.readbyqxmd.com/read/28494313/heavy-metals-translocation-and-accumulation-from-the-rhizosphere-soils-to-the-edible-parts-of-the-medicinal-plant-fengdan-paeonia-ostii-grown-on-a-metal-mining-area-china
#13
Zhang Jun Shen, De Cong Xu, Yan Song Chen, Zhen Zhang
Fengdan (Paeonia ostii) is one of Chinese 34 famous medicinal materials. This study investigated the concentrations of Arsenic (As), Chromium (Cr), Cadmium (Cd), Copper (Cu), Lead (Pb), Iron (Fe), Manganese (Mn), and Zinc (Zn) in rhizosphere soils, cortex mouton and seeds of Fengdan planted in a metal mining area, China. The mean concentrations of As, Cd, Cu, and Zn in the rhizosphere soils were above the limits set by the Chinese Soil Environmental Quality Standard (GB 15618-1995). The contamination factor (CF) of Cd was >5, while it was >2for As, Cu, Pb, and Zn in all the soils...
May 8, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28494308/unravelling-cadmium-toxicity-and-nitric-oxide-induced-tolerance-in-cucumis-sativus-insight-into-regulatory-mechanisms-using-proteomics
#14
Biao Gong, Wenjing Nie, Yanyan Yan, Zhongxi Gao, Qinghua Shi
Nitric oxide (NO) is a signal molecule that can mediate a wide range of physiological processes against cadmium (Cd) toxicity in plants. However, little information can be used to reveal the global and systematic mitigative mechanism of NO in improving Cd stress tolerance of cucumber plants. In the present study, we used Isobaric Tag for Relative and Absolute Quantification (iTRAQ) analysis to identify 1691 proteins, which can be used to determine the role of NO in regulating the molecular changes of proteome in cucumber leaves exposed to Cd stress...
April 25, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28486013/plants-prioritize-phytochelatin-synthesis-during-cadmium-exposure-even-under-reduced-sulfate-uptake-caused-by-the-disruption-of-sultr1-2
#15
Chisato Yamaguchi, Naoko Ohkama-Ohtsu, Takuro Shinano, Akiko Maruyama-Nakashita
Glutathione and phytochelatins are sulfur containing compounds playing an important role in cadmium (Cd) detoxification. We examined the Cd-induced changes in the percentage of sulfur containing compounds to total sulfur in wild-type and sulfate transporter 1;2 knockout mutant, sel1-10. Cd treatment increased the proportion of sulfate and thiols in the total sulfur content. Among the thiols analyzed, the proportion of cysteine and glutathione were decreased by the Cd treatment and that of the phytochelatins were increased...
May 9, 2017: Plant Signaling & Behavior
https://www.readbyqxmd.com/read/28480907/metabolomic-analysis-of-the-effects-of-cadmium-and-copper-treatment-in-oryza-sativa-l-using-untargeted-liquid-chromatography-coupled-to-high-resolution-mass-spectrometry-and-all-ion-fragmentation
#16
Meritxell Navarro-Reig, Joaquim Jaumot, Benjamín Piña, Encarnación Moyano, Maria Teresa Galceran, Romà Tauler
While the knowledge of plant metabolomes has increased in the last few years, their response to the presence of toxicants is still poorly understood. Here, we analyse the metabolomic changes in Japanese rice (Oryza sativa var. Japonica) upon exposure to heavy metals (Cd(ii) and Cu(ii)) in concentrations from 10 to 1000 μM. After harvesting, rice metabolites were extracted from aerial parts of the plants and analysed by HPLC (HILIC TSK gel amide-80 column) coupled to a mass spectrometer quadrupole-Orbitrap (Q-Exactive)...
May 8, 2017: Metallomics: Integrated Biometal Science
https://www.readbyqxmd.com/read/28480489/effect-of-microorganisms-on-reducing-cadmium-uptake-and-toxicity-in-rice-oryza-sativa-l
#17
Chairat Treesubsuntorn, Prapai Dhurakit, Gholamreza Khaksar, Paitip Thiravetyan
This study analyzed the application of three microorganism inoculums, including Bacillus subtilis, Bacillus cereus, and commercial effective microorganism (EM) solution in order to determine cadmium (Cd) reduction in rice (Oryza sativa L.) and rice growth promotion. Rice was grown in Cd-contaminated soil (120 mg/kg) and selected microorganisms were inoculated. Cd concentration and rice weight were measured at 45 and 120 days of the experiment. The result showed that B. subtilis inoculation into rice can highly reduce Cd accumulation in every part of rice roots and shoots (45 days), and grains (120 days)...
May 8, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28479087/low-temperature-circulating-fluidized-bed-gasification-and-co-gasification-of-municipal-sewage-sludge-part-2-evaluation-of-ash-materials-as-phosphorus-fertilizer
#18
Tobias Pape Thomsen, Henrik Hauggaard-Nielsen, Benny Gøbel, Peder Stoholm, Jesper Ahrenfeldt, Ulrik B Henriksen, Dorette Sophie Müller-Stöver
The study is part 2 of 2 in an investigation of gasification and co-gasification of municipal sewage sludge in low temperature gasifiers. In this work, solid residuals from thermal gasification and co-gasification of municipal sewage sludge were investigated for their potential use as fertilizer. Ashes from five different low temperature circulating fluidized bed (LT-CFB) gasification campaigns including two mono-sludge campaigns, two sludge/straw mixed fuels campaigns and a straw reference campaign were compared...
May 4, 2017: Waste Management
https://www.readbyqxmd.com/read/28468120/trace-element-concentrations-along-a-gradient-of-urban-pressure-in-forest-and-lawn-soils-of-the-paris-region-france
#19
Ludovic Foti, Florence Dubs, Jacques Gignoux, Jean-Christophe Lata, Thomas Z Lerch, Jérôme Mathieu, François Nold, Naoise Nunan, Xavier Raynaud, Luc Abbadie, Sébastien Barot
The concentration, degree of contamination and pollution of 7 trace elements (TEs) along an urban pressure gradient were measured in 180 lawn and wood soils of the Paris region (France). Iron (Fe), a major element, was used as reference element. Copper (Cu), cadmium (Cd), lead (Pb) and zinc (Zn) were of anthropogenic origin, while arsenic (As), chromium (Cr) and nickel (Ni) were of natural origin. Road traffic was identified as the main source of anthropogenic TEs. In addition, the industrial activity of the Paris region, especially cement plants, was identified as secondary source of Cd...
April 28, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28456920/non-enhanced-phytoextraction-of-cadmium-zinc-and-lead-by-high-yielding-crops
#20
Markéta Mayerová, Šárka Petrová, Mikuláš Madaras, Jan Lipavský, Tomáš Šimon, Tomáš Vaněk
Heavy metal soil contamination from mining and smelting has been reported in several regions around the world, and phytoextraction, using plants to accumulate risk elements in aboveground harvestable organs, is a useful method of substantially reducing this contamination. In our 3-year experiment, we tested the hypothesis that phytoextraction can be successful in local soil conditions without external fertilizer input. The phytoextraction efficiency of 15 high-yielding crop species was assessed in a field experiment performed at the Litavka River alluvium in the Příbram region of Czechia...
April 30, 2017: Environmental Science and Pollution Research International
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