Read by QxMD icon Read

Vitis copper

Lingfei Shangguan, Xiang Fang, Lide Chen, Liwen Cui, Jinggui Fang
Grapevine autophagy-related genes (ARGs) include 35 members that have unique evolutionary backgrounds and expression patterns, with some of them responding to abiotic stresses, including copper stress. Autophagy is one of the most crucial self-regulating phenomena in livings organisms, including animals, plants, yeasts, etc. In the genomes of plants, like Arabidopsis, rice, tobacco, and barley, more than 30 autophagy-related genes (ARGs) have been found. These ARGs are involved in plant development, programed cell death, and the stress response process...
June 2018: Planta
Enrico Battiston, Maria C Salvatici, Alessandro Lavacchi, Antonietta Gatti, Stefano Di Marco, Laura Mugnai
BACKGROUND: The present study evaluated a biocompatible material for plant protection with the aim of reducing the amount of active substance applied. We used a synthetic hydroxyapatite (HA) that has been studied extensively as a consequence of its bioactivity and biocompatibility. An aggregation between HA nanoparticles and four Cu(II) compounds applied to Vitis vinifera L. leaves as a pesticide was studied. Formulations were characterized by X-ray diffraction (XRD), dynamic light scattering (DLS) and electron microscopy and applied in planta to verify particle aggregation and efficiency in controlling the pathogen Plasmopara viticola...
February 19, 2018: Pest Management Science
Marianne Daou, Craig B Faulds
H2O2 has been found to be required for the activity of the main microbial enzymes responsible for lignin oxidative cleavage, peroxidases. Along with other small radicals, it is implicated in the early attack of plant biomass by fungi. Among the few extracellular H2O2-generating enzymes known are the glyoxal oxidases (GLOX). GLOX is a copper-containing enzyme, sharing high similarity at the level of active site structure and chemistry with galactose oxidase. Genes encoding GLOX enzymes are widely distributed among wood-degrading fungi especially white-rot degraders, plant pathogenic and symbiotic fungi...
May 2017: World Journal of Microbiology & Biotechnology
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
Z K Bakhmulaeva, S A Magadova
Micronutrient content in Pearl Zala, Pearl Saba, Creamy, and Amber Muscat varieties of grape has been determined. The ultimate analysis has been made by the atomic-absorption flame photometry; ascorbic acid has been determined by the titrometric analysis; rutin, niacin, and carotene have been studied by the colorimetric method. It has been found that the content of potassium (2673.8 mg/kg), calcium (349.0 mg/kg), iron (35.9 mg/kg), silicon (611.3 mg/kg), manganese (0.89 mg/kg) and vitamin C (5.3 mg/dm3) was the highest in Pearl Zala grapes, while the content of zinc (0...
2015: Voprosy Pitaniia
Vítor Gabriel Ambrosini, Daniel José Rosa, Jenny Paola Corredor Prado, Marcelo Borghezan, George Wellington Bastos de Melo, Cláudio Roberto Fonsêca de Sousa Soares, Jucinei José Comin, Daniela Guimarães Simão, Gustavo Brunetto
Frequent applications of copper (Cu)-based fungicides on vines causes the accumulation of this metal in vineyard soils, which can cause toxicity in young vines. However, liming may reduce these toxic effects. The present study aimed to evaluate the effects of Cu toxicity on the root anatomy of young vines and the alleviation of Cu toxicity by lime applications to contaminated sandy soil. The treatments consisted of the addition of lime (0.0, 1.5 and 3.0 Mg ha(-1)) and two Cu concentrations (0 and 50 mg kg(-1)) to Typic Hapludalf soil...
November 2015: Plant Physiology and Biochemistry: PPB
Anja Fiesel, Melanie Ehrmann, Denise K Geßner, Erika Most, Klaus Eder
Polyphenol-rich plant products as feed supplements have been shown to exert beneficial effects on feed efficiency in piglets. However, tannins as components of polyphenol-rich plant products are able to reduce the absorption of various trace elements. The present study investigated the effect of two polyphenol-rich dietary supplements, grape seed and grape marc meal extract (GME) and spent hops (SH), on iron (Fe), zinc (Zn) and copper (Cu) status in piglets supplied adequately with those trace elements. A trial with three groups of piglets which received a Control diet or the same diet supplemented with either 1% GME or 1% SH over a period of 4 weeks was performed...
2015: Archives of Animal Nutrition
Xiangpeng Leng, Qian Mu, Xiaomin Wang, Xiaopeng Li, Xudong Zhu, Lingfei Shangguan, Jinggui Fang
With more copper and copper-containing compounds used as bactericides and fungicides in viticulture, copper homeostasis in grapevine (Vitis) has become one of the serious environmental crises with great risk. To better understand the regulation of Cu homeostasis in grapevine, grapevine seedlings cultured in vitro with different levels of Cu were utilized to investigate the tolerance mechanisms of grapevine responding to copper availability at physiological and molecular levels. The results indicated that Cu contents in roots and leaves arose with increasing levels of Cu application...
November 2015: Functional & Integrative Genomics
Xiang-Yu Sun, Yu Zhao, Ling-Ling Liu, Bo Jia, Fang Zhao, Wei-Dong Huang, Ji-Cheng Zhan
At high levels, copper in grape mash can inhibit yeast activity and cause stuck fermentations. Wine yeast has limited tolerance of copper and can reduce copper levels in wine during fermentation. This study aimed to understand copper tolerance of wine yeast and establish the mechanism by which yeast decreases copper in the must during fermentation. Three strains of Saccharomyces cerevisiae (lab selected strain BH8 and industrial strains AWRI R2 and Freddo) and a simple model fermentation system containing 0 to 1...
2015: PloS One
Bo Jia, Xingyan Liu, Jicheng Zhan, Jingyuan Li, Weidong Huang
Proanthocyanidins (PAs) derived from the grape skin, as well as from grape seeds, grape stems, are an important group of polyphenols in wine. The aim of this study was to understand the effect of PAs (0.1, 1.0 g/L) on growth and alcoholic fermentation of 2 strains of Saccharomyces cerevisiae (commercial strain FREDDO and newly selected strain BH8) during copper-stress fermentation, using a simple model fermentation system. Our results showed that both PAs and Cu(2+) could pose significant inhibition effects on the growth of yeast cells, CO2 release, sugar consumption, and ethanol production during the initial phase of the fermentation...
June 2015: Journal of Food Science
Petra Fronk, Hermann Hartmann, Margarita Bauer, Even Solem, Elmar Jaenicke, Stefan Tenzer, Heinz Decker
Polyphenoloxidases (PPO) of the type-3 copper protein family are considered to be catecholoxidases catalyzing the oxidation of o-diphenols to their corresponding quinones. PPO from Grenache grapes has recently been reported to display only diphenolase activity. In contrast, we have characterized PPOs from Dornfelder and Riesling grapes which display both monophenolase and diphenolase activity. Ultracentrifugation and size exclusion chromatography indicated that both PPOs occur as monomers with Mr of about 38kDa...
September 15, 2015: Food Chemistry
S Proffit, B Marin, B Cances, M Ponthieu, S Sayen, E Guillon
The Bureau Commun de Référence (BCR) sequential extraction scheme and micro-synchrotron-based X-ray fluorescence (μ-SXRF) analysis were used to determine the Cu fractionation in a calcareous vineyard soil and a synthetic soil (mixture of seven constituents: calcite, birnessite, ferrihydrite, goethite, lignocellulosic residue, kaolinite, and quartz) at different Cu contamination rates (190, 1270, and 6350 mg kg(-1) of Cu) and aging times (1, 30, 92, and 181 days). The Cu distribution in the spiked vineyard and synthetic soils was different from the original vineyard one and was influenced by the loading level...
May 2015: Environmental Science and Pollution Research International
Silwan Daouk, Carla Frege, Nicolas Blanc, Stéphane Mounier, Roland Redon, Patricia Merdy, Yves Lucas, Hans-Rudolf Pfeifer
UV/Vis fluorescence spectroscopy was used to study the possible interactions of dissolved organic matter (DOM) with the herbicide glyphosate and copper-based fungicide used in vineyards. The study focused on the role of DOM in the transport of these micropollutants from parcels to surface waters (river, lake). Soil solution and river water samples were collected in the Lavaux vineyard area, western Switzerland. Their fluorescence excitation emission matrices (EEM) were decomposed using parallel factor (PARAFAC) analysis, and compared to their content in glyphosate and copper...
June 2015: Environmental Science and Pollution Research International
Adriano Costa de Camargo, Marisa Aparecida Bismara Regitano-d'Arce, Aline Camarão Telles Biasoto, Fereidoon Shahidi
Bioactive compounds belonging to phenolic acids, flavonoids, and proanthocyanidins of grape juice and winemaking byproducts were identified and quantified by HPLC-DAD-ESI-MS(n). The concentration of phenolic compounds in different grape cultivars was in the order Tempranillo > Cora > Syrah > Isabel. The insoluble-bound fraction was most prominent, contributing 63 and 79% to the total for Isabel and Tempranillo, respectively. Juice-processing byproducts had a higher content of free than esterified phenolics, but the opposite was noted for winemaking byproducts...
December 17, 2014: Journal of Agricultural and Food Chemistry
Saloua Hatmi, Charlotte Gruau, Patricia Trotel-Aziz, Sandra Villaume, Fanja Rabenoelina, Fabienne Baillieul, Philippe Eullaffroy, Christophe Clément, Ali Ferchichi, Aziz Aziz
Environmental factors including drought stress may modulate plant immune responses and resistance to pathogens. However, the relationship between mechanisms of drought tolerance and resistance to pathogens remained unknown. In this study, the effects of drought stress on polyamine (PA) homeostasis and immune responses were investigated in two grapevine genotypes differing in their drought tolerance; Chardonnay (CHR), as sensitive and Meski (MSK), as tolerant. Under drought conditions, MSK plants showed the lowest leaf water loss and reduction of photosynthetic efficiency, and expressed a lower level of NCED2, a gene involved in abscisic acid biosynthesis, compared with CHR plants...
February 2015: Journal of Experimental Botany
Y Arrieta-Garay, P Blanco, C López-Vázquez, J J Rodríguez-Bencomo, J R Pérez-Correa, F López, I Orriols
Orujo is a traditional alcoholic beverage produced in Galicia (northwest Spain) from distillation of grape pomace, a byproduct of the winemaking industry. In this study, the effect of the distillation system (copper charentais alembic versus packed column) and the yeast strain (native yeast L1 versus commercial yeast L2) on the chemical and sensory characteristics of orujo obtained from Albariño (Vitis vinifera L.) grape pomace has been analyzed. Principal component analysis, with two components explaining 74% of the variance, is able to clearly differentiate the distillates according to distillation system and yeast strain...
October 29, 2014: Journal of Agricultural and Food Chemistry
J Cambrollé, J L García, M E Figueroa, M Cantos
We evaluate copper tolerance and accumulation in Vitis vinifera ssp. sylvestris in populations from a copper contaminated site and an uncontaminated site, and in the grapevine rootstock "41B", investigating the effects of copper (0-23 mM) on growth, photosynthetic performance and mineral nutrient content. The highest Cu treatment induced nutrient imbalances and inhibited photosynthetic function, causing a drastic reduction in growth in the three study plants. Effective concentration was higher than 23 mM Cu in the wild grapevines and around 9 mM in the "41B" plants...
February 2015: Chemosphere
Viviana Martins, António Teixeira, Elias Bassil, Eduardo Blumwald, Hernâni Gerós
Since the development of Bordeaux mixture in the late 1800's, copper-based fungicides have been widely used against grapevine (Vitis vinifera L.) diseases, mainly in organic but also in conventional viticulture; however their intensive use has raised phytotoxicity concerns. In this study, the composition of grape berries and leaves upon Bordeaux mixture treatment was investigated during the fructification season by a metabolomic approach. Four applications of Bordeaux mixture till 3 weeks before harvest were performed following the regular management practices of organic viticulture...
September 2014: Plant Physiology and Biochemistry: PPB
Viviana Martins, Elias Bassil, Mohsen Hanana, Eduardo Blumwald, Hernâni Gerós
The Vitis vinifera copper transporter 1 is capable of self-interaction and mediates intracellular copper transport. An understanding of copper homeostasis in grapevine (Vitis vinifera L.) is particularly relevant to viticulture in which copper-based fungicides are intensively used. In the present study, the Vitis vinifera copper transporter 1 (VvCTr1), belonging to the Ctr family of copper transporters, was cloned and functionally characterized. Amino acid sequence analysis showed that VvCTr1 monomers are small peptides composed of 148 amino acids with 3 transmembrane domains and several amino acid residues typical of Ctr transporters...
July 2014: Planta
Kai-Wei Juang, Yung-I Lee, Hung-Yu Lai, Bo-Ching Chen
The phytotoxic effects of excess copper (Cu) on grapevines (Vitis vinifera L. var. Kyoho) were examined, both from macroscopic and microscopic perspectives, by using a fifteen-day hydroponic experiments. The influence of magnesium (Mg) on Cu phytotoxicity to, and accumulation and translocation in grapevines was also observed. For phytotoxicity effect, results showed that a relative low median growth inhibition level of Cu was found for grapevine roots (0.809-3.671μM). Moreover, Cu toxicity was significantly alleviated by Mg treatment at Mg(2+) activity between 0...
June 2014: Ecotoxicology and Environmental Safety
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"