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Copper plant

Marinus Pilon
I. II. III. IV. V. VI. VII. VIII. References SUMMARY: Copper (Cu) microRNAs are upregulated by Cu deficiency and mediate the post-transcriptional downregulation of transcripts that encode Cu proteins, suggesting a role directly related to Cu. However, expression and phenotypic analyses of copper microRNA mutants and over-expressors have suggested roles mainly in tolerance to abiotic stresses. To reconcile available data, a model is proposed which emphasizes the mobile nature of copper microRNA molecules in the regulation of Cu homeostasis...
October 21, 2016: New Phytologist
Qijiang Jin, Xin Hu, Xin Li, Bei Wang, Yanjie Wang, Hongwei Jiang, Neil Mattson, Yingchun Xu
Trehalose-6-phosphate synthase (TPS) plays a key role in plant carbohydrate metabolism and the perception of carbohydrate availability. In the present work, the publicly available Nelumbo nucifera (lotus) genome sequence database was analyzed which led to identification of nine lotus TPS genes (NnTPS). It was found that at least two introns are included in the coding sequences of NnTPS genes. When the motif compositions were analyzed we found that NnTPS generally shared the similar motifs, implying that they have similar functions...
2016: Frontiers in Plant Science
Arunava Pradhan, Carla O Silva, Carlos Silva, Cláudia Pascoal, Fernanda Cássio
Commercial applications of nanometal oxides have increased concern about their release into natural waters and consequent risks to aquatic biota and the processes they drive. In forest streams, the invertebrate shredder Allogamus ligonifer plays a key role in detritus food webs by transferring carbon and energy from plant litter to higher trophic levels. We assessed the response profiles of oxidative and neuronal stress enzymatic biomarkers in A. ligonifer after 96h exposure to nanoCuO at concentration ranges <LC30...
September 28, 2016: Aquatic Toxicology
Zhugui Wen, Liang Shi, Yangze Tang, Zhenguo Shen, Yan Xia, Yahua Chen
We used Pisolithus tinctorius and Cenococcum geophilum to determine the copper (Cu) resistance of ectomycorrhizal (ECM) fungi and their potential for improving phytoremediation of Cu-contaminated soil by Chinese red pine (Pinus tabulaeformis). The results showed that nutrient accumulation in C. geophilum mycelium was significantly lower under higher Cu concentrations in the soil, which was not observed in P. tinctorius. Meanwhile, P. tinctorius exhibited greater Cu tolerance than C. geophilum. Inoculation with ECM fungi significantly improved the growth of pine shoots planted in polluted soil in pot experiments (p < 0...
October 14, 2016: International Journal of Phytoremediation
Vinod Kumar, A K Chopra, Sachin Srivastava, Jogendra Singh, Roushan Kumar Thakur
The present study was carried out to probe the agronomic response of hybrid cultivar of okra (Hibiscus esculentus L. var. JK 7315) grown in secondary treated municipal wastewater irrigated soil with field investigations. The concentrations of the municipal wastewater viz., 10%, 20%, 40%, 60%, 80% and 100% along with the control (groundwater) were used for the irrigation of the H. esculentus. The study revealed that the concentrations of the municipal wastewater showed significant (P<0.05/P<0.01) effect on the soil parameters after wastewater fertigation in comparison to groundwater in both the seasons...
October 14, 2016: International Journal of Phytoremediation
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
Cosima Damiana Calvano, Giovanni Ventura, Massimo Trotta, Giuliana Bianco, Tommaso R I Cataldi, Francesco Palmisano
Bacteriochlorophyll a (BChl a), a photosynthetic pigment performing the same functions of chlorophylls in plants, features a bacteriochlorin macrocycle ring (18 π electrons) with two reduced pyrrole rings along with a hydrophobic terpenoid side chain (i.e., the phytol residue). Chlorophylls analysis by matrix-assisted laser desorption/ionization mass spectrometry (MALDI MS) is not so straightforward since pheophytinization (i.e., release of the central metal ion) and cleavage of the phytol-ester linkage are invariably observed by employing protonating matrices such as 2,5-dihydroxybenzoic acid, sinapinic acid, and α-cyano-4-hydroxycinnamic acid...
October 11, 2016: Journal of the American Society for Mass Spectrometry
Jorin Hoogenboom, Nathalja Berghuis, Dario Cramer, Rene Geurts, Han Zuilhof, Tom Wennekes
BACKGROUND: Carbohydrates, also called glycans, play a crucial but not fully understood role in plant health and development. The non-template driven formation of glycans makes it impossible to image them in vivo with genetically encoded fluorescent tags and related molecular biology approaches. A solution to this problem is the use of tailor-made glycan analogs that are metabolically incorporated by the plant into its glycans. These metabolically incorporated probes can be visualized, but techniques documented so far use toxic copper-catalyzed labeling...
October 10, 2016: BMC Plant Biology
M Shahul Hamid Rahamah Bivi, Adamu Saidu Paiko, Ahmad Khairulmazmi, M S Akhtar, Abu Seman Idris
Continuous supplementation of mineral nutrients and salicylic acid (SA) as foliar application could improve efficacy in controlling basal stem rot (BSR) disease in oil palm seedling. It is revealed from the results that the highest disease severity index (58.3%) was recorded in T8 treatments at 9 months after inoculation. The best disease control was achieved by T7 treatments (calcium/copper/SA [Ca/Cu/SA]) (5.0%) followed by T1 (5.5%), T5 (5.8%), T3 (8.3%), T6 (8.3%), T4 (13.3%), and T2 (15.8%) treatments. Continuous supplementation of Ca/Cu/SA was found to be the most effective in controlling the disease and the high performance liquid chromatography results showed the detection of ergosterol at very low concentration in the treated samples...
October 2016: Plant Pathology Journal
Marko Vincekovic, Nenad Jalšenjak, Snježana Topolovec-Pintarić, Edyta Đermić, Marija Bujan, Slaven Jurić
Novel chitosan/alginate microcapsules simultaneously loaded with copper cations and Trichoderma viride have been prepared and characterized. Information about intermolecular interactions between biopolymers and bioactive agents were obtained by Fourier transform infrared spectroscopy. Encapsulation of Trichoderma viride spores and the presence of copper cations in the same compartment do not inhibit their activity. Dependence of microcapsule loading capacity and efficiency, swelling behavior and releasing depend on both, the size of the microcapsule and bioactive agents...
October 7, 2016: Journal of Agricultural and Food Chemistry
Huayao Chen, Yueshun Lin, Hongjun Zhou, Xinhua Zhou, Sheng Gong, Hua Xu
The salicylaldehyde modified mesoporous silica (SA-MCM-41) was prepared through a co-condensation method. Through the bridge effect from copper ion which also acts as the nutrition of the plant, the model drug- chlorpyrifos(CH) was supported on the copper(II)/Schiff base mesoporous silica (Cu-MCM-41) to form a highly efficient sustained released system (CH-Cu-MCM-41) for pesticide delivery. The experimental results showed that the larger the concentration of copper ion was, the more adsorption capacity (AC) of Cu-MCM-41 for chlorpyrifos was and the smaller its release rate was...
October 7, 2016: Journal of Agricultural and Food Chemistry
Nurul Afifah Mohd Salleh, Sabariah Ismail, Mohd Rohaimi Ab Halim
BACKGROUND: Curcuma xanthorrhiza is a native Indonesian plant and traditionally utilized for a range of illness including liver damage, hypertension, diabetes, and cancer. OBJECTIVE: The study determined the effects of C. xanthorrhiza extracts (ethanol and aqueous) and their constituents (curcumene and xanthorrhizol) on UDP-glucuronosyltransferase (UGT) and glutathione transferase (GST) activities. MATERIALS AND METHODS: The inhibition studies were evaluated both in rat liver microsomes and in human recombinant UGT1A1 and UGT2B7 enzymes...
October 2016: Pharmacognosy Research
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
Amina Khatun, Sandipan Pal, Aloke Kumar Mukherjee, Palas Samanta, Subinoy Mondal, Debraj Kole, Priyanka Chandra, Apurba Ratan Ghosh
Objectives: Present study deals with the analysis of metal contamination in sediment of East Kolkata Wetlands (EKW), a Ramsar site, which is receiving a huge amount of domestic and industrial wastewater from surrounding areas and their subsequent uptake and accumulation in different macrophytes in regard to phytoremediation potentiality. Methods: Metals like cadmium (Cd), copper (Cu), manganese (Mn) and lead (Pb) were estimated in sediment, water and different parts of the macrophytes viz...
September 8, 2016: Environmental Health and Toxicology
Carola Biancalani, Matteo Cerboneschi, Francesco Tadini-Buoninsegni, Margherita Campo, Arianna Scardigli, Annalisa Romani, Stefania Tegli
Protection of plants against bacterial diseases still mainly relies on the use of chemical pesticides, which in Europe correspond essentially to copper-based compounds. However, recently plant diseases control is oriented towards a rational use of molecules and extracts, generally with natural origin, with lower intrinsic toxicity and a reduced negative environmental impact. In this work, polyphenolic extracts from vegetable no food/feed residues of typical Mediterranean crops, as Olea europaea, Cynara scolymus, and Vitis vinifera were obtained and their inhibitory activity on the Type Three Secretion System (TTSS) and the Quorum Sensing (QS) of the Gram-negative phytopathogenic bacterium Pseudomonas savastanoi pv...
2016: PloS One
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
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
Fernando Uriel Rojas-Rojas, Marcel Huntemann, Alicia Clum, Manoj Pillay, Krishnaveni Palaniappan, Neha Varghese, Natalia Mikhailova, Dimitrios Stamatis, T B K Reddy, Victor Markowitz, Natalia Ivanova, Nikos Kyrpides, Tanja Woyke, Nicole Shapiro, J Antonio Ibarra, Paulina Estrada-de Los Santos
Cupriavidus alkaliphilus ASC-732(T) was isolated from the rhizosphere of agave plant growing in alkaline soils in San Carlos, Tamaulipas, Mexico. The species is able to grow in the presence of arsenic, zinc, and copper. The genome sequence of strain ASC-732(T) is 6,125,055 bp with 5,586 genes and an average G+C content of 67.81%.
2016: Genome Announcements
F Catanese, P Fernández, J J Villalba, R A Distel
Toxins and nutrients interact and define herbivores' experiences with toxic plants. However, there are still open questions about the mechanisms by which nutrient-toxin interactions affect experience and as a consequence foraging decisions by consumers. This study provides a deeper insight into such mechanisms by using supplemental nutrients, a toxic plant typically avoided by herbivores (wild rocket; Diplotaxis tenuifolia), and a small ruminant (sheep; Ovis aries) as models. Thirty-six sheep were randomly assigned to four treatments (n=9) where animals consumed: wild rocket ("DT"), wild rocket followed by a protein supplement ("DT+P"), wild rocket followed by a protein supplement+a mineral supplement containing iodine and copper ("DT+P+M"), or alfalfa pellets in amounts that paired the ingestion of wild rocket by DT ("CTRL")...
September 17, 2016: Physiology & Behavior
Theodore M Mwamba, Lan Li, Rafaqat A Gill, Faisal Islam, Amir Nawaz, Basharat Ali, Muhammad A Farooq, Jonas L Lwalaba, Weijun Zhou
Metal subcellular fractions and chemical profile highly reflect their level of toxicity to plants. Cadmium and Cu, two different but potentially toxic metals, were compared in the present study for their subcellular distribution and chemical forms in two Brassica napus cultivars (Zheda 622 and ZS 758). Five-week-old seedlings were hydroponically exposed to metal stress and analyzed after 15 days of treatment. In both cultivars, Cd was less retained at cell wall, thus major part of Cd accumulated in the soluble fraction...
September 14, 2016: Ecotoxicology and Environmental Safety
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