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https://www.readbyqxmd.com/read/28709043/improvement-effects-of-cytokinin-on-edta-assisted-phytoremediation-and-the-associated-environmental-risks
#1
Jie Luo, Limei Cai, Shihua Qi, Jian Wu, X W Sophie Gu
Soil samples containing excess Cd (0.82 mg kg(-1)), Pb (92.7 mg kg(-1)) and Cu (72.7 mg kg(-1)) relative to their corresponding safe thresholds (0.3, 80 and 50 mg kg(-1), respectively) from a notorious e-waste disposing and recycling place in southern China were phytoremediated with EDTA addition to evaluate the promotion effects of cytokinin on the remediation efficiency of Eucalyptus globulus. Biomass production of the plant, evapotranspiration amount of the soil, metals accumulation in plant organs and the volume of leachate under various treatments were compared...
July 8, 2017: Chemosphere
https://www.readbyqxmd.com/read/28691021/evaluation-of-stability-and-in-vitro-security-of-nanoemulsions-containing-eucalyptus-globulus-oil
#2
Samantha Nunes de Godoi, Priscilla Maciel Quatrin, Michele Rorato Sagrillo, Kátia Nascimento, Roger Wagner, Bruna Klein, Roberto Christ Vianna Santos, Aline Ferreira Ourique
Essential oil of Eucalyptus globulus presents several pharmacological properties. However, their therapeutic efficacy may be affected by limitations due to several conditions, rendering it difficult to obtain stable and effective pharmaceutical formulations. The use of nanotechnology is an alternative to improve their characteristics aiming to ensure their stability and effectiveness. Furthermore, studies about the possible toxic effects of nanostructures are necessary to evaluate safety when the formulation comes into contact with human cells...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28679070/microsatellite-analysis-of-population-structure-in-eucalyptus-globulus
#3
Joana Seabra Costa, René Vaillancourt, Dorothy Steane, Rebecca Jones, Cristina Marques
Eucalyptus globulus subsp. globulus Labill (Tasmanian Blue Gum), native to southeast Australia, is a benchmark species for the pulp and paper industry. We genotyped 397 trees representing 16 populations of E. globulus native diversity in Australia with 24 microsatellite loci. Eight genetically distinct groups were detected, consistent with genetic groupings detected in previous quantitative and molecular studies. A sample of 29 Portuguese individuals was added to help clarify the origin of the Portuguese landrace...
July 5, 2017: Genome Génome / Conseil National de Recherches Canada
https://www.readbyqxmd.com/read/28637361/antioxidant-activity-of-phenolic-compounds-from-extracts-of-eucalyptus-globulus-and-melaleuca-styphelioides-and-their-protective-role-on-d-glucose-induced-hyperglycemic-stress-and-oxalate-stress-in-nrk-49fcells
#4
Divya Ganesan, Eman Al-Sayed, Abhishek Albert, Eldho Paul, Abdel Nasser B Singab, Selvam Govindan Sadasivam, Luciano Saso
Phytochemicals serve as potential therapeutic agents for the prevention and treatment of diseases. In this study, we elucidate the renoprotective activity of compounds isolated from Eucalyptus globulus and Melaleuca styphelioides extracts in glucose- and oxalate-challenged NRK-49F cell model. The antioxidant potential of isolated compounds was evaluated based on their effect on antioxidant enzyme activities and lipid peroxidation levels. The results demonstrated that exposure of NRK-49F cells to glucose and oxalate stress augmented cell damage and attenuated antioxidant enzyme activities...
June 21, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28611658/neuroprotective-and-anti-aging-potentials-of-essential-oils-from-aromatic-and-medicinal-plants
#5
REVIEW
Muhammad Ayaz, Abdul Sadiq, Muhammad Junaid, Farhat Ullah, Fazal Subhan, Jawad Ahmed
The use of essential oils (EOs) and their components is known since long in traditional medicine and aromatherapy for the management of various diseases, and is further increased in the recent times. The neuroprotective and anti-aging potentials of EOs and their possible mechanism of actions were evaluated by numerous researchers around the globe. Several clinically important EOs and their components from Nigella sativa, Acorus gramineus, Lavandula angustifolia, Eucalyptus globulus, Mentha piperita, Rosmarinus officinalis, Jasminum sambac, Piper nigrum and so many other plants are reported for neuroprotective effects...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28561806/genetic-based-interactions-among-tree-neighbors-identification-of-the-most-influential-neighbors-and-estimation-of-correlations-among-direct-and-indirect-genetic-effects-for-leaf-disease-and-growth-in-eucalyptus-globulus
#6
J Costa E Silva, B M Potts, A R Gilmour, R J Kerr
An individual's genes may influence the phenotype of neighboring conspecifics. Such indirect genetic effects (IGEs) are important as they can affect the apparent total heritable variance in a population, and thus the response to selection. We studied these effects in a large, pedigreed population of Eucalyptus globulus using variance component analyses of Mycosphearella leaf disease, diameter growth at age 2 years, and post-infection diameter growth at ages 4 and 8 years. In a novel approach, we initially modeled IGEs using a factor analytic (FA) structure to identify the most influential neighbor positions, with the FA loadings being position-specific regressions on the IGEs...
May 31, 2017: Heredity
https://www.readbyqxmd.com/read/28541536/acclimation-of-light-and-dark-respiration-to-experimental-and-seasonal-warming-are-mediated-by-changes-in-leaf-nitrogen-in-eucalyptus-globulus
#7
K Y Crous, G Wallin, O K Atkin, J Uddling, A Af Ekenstam
Quantifying the adjustments of leaf respiration in response to seasonal temperature variation and climate warming is crucial because carbon loss from vegetation is a large but uncertain part of the global carbon cycle. We grew fast-growing Eucalyptus globulus Labill. trees exposed to +3 °C warming and elevated CO2 in 10-m tall whole-tree chambers and measured the temperature responses of leaf mitochondrial respiration, both in light (RLight) and in darkness (RDark), over a 20-40 °C temperature range and during two different seasons...
May 24, 2017: Tree Physiology
https://www.readbyqxmd.com/read/28514868/phytochemical-composition-and-in-vitro-screening-of-the-antimicrobial-activity-of-essential-oils-on-oral-pathogenic-bacteria
#8
Roberta Tardugno, Federica Pellati, Ramona Iseppi, Moreno Bondi, Giacomo Bruzzesi, Stefania Benvenuti
In this study, the activity of essential oils (EOs) against microorganisms involved in oral diseases was evaluated. Fourteen EOs were selected and subjected to gas chromatographic analysis, including Illicium verum, Eucaliptus globulus, Eugenia caryophyllata, Leptospermum scoparium, Mentha arvensis, Mentha piperita, Myrtus communis, Salvia officinalis, Melaleuca alternifolia, Rosmarinus officinalis, Lavandula x intermedia, Thymus capitatus and Thymus vulgaris. These EOs were tested for their antimicrobial activity on Streptococcus mutans and Lactobacillus species clinically isolated from dental surgery patients...
May 17, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28500552/adsorption-of-terpenic-compounds-onto-organo-palygorskite
#9
Sana Ghrab, Mabrouk Eloussaief, Stéphanie Lambert, Samir Bouaziz, Mourad Benzina
Essential oils from aromatic plants are currently mentioned as suitable tools for excellent protection of stored grains from insect pest attacks. The present work aimed to study the processes of the synthesis insecticidal formulation with clay. The active terpenic compounds of essential oil of Eucalyptus globulus (Eg) were fixed in the palygorskite by adsorption process. Two sample types of palygorskites were used: raw and organo-palygorskite. The palygorskite clays were characterized by different physicochemical techniques including X-ray diffraction (XRD), Fourier transform infrared (FTIR) analyses, thermogravimetric analysis (TG), differential thermal analysis (DTA), Brunauer-Emmet-Teller (BET), and scanning electron microscope (SEM)...
May 13, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28490520/carbon-allocation-to-growth-and-storage-in-two-evergreen-species-of-contrasting-successional-status
#10
Frida I Piper, Paulina Sepúlveda, Angela Bustos-Salazar, Alejandra Zúñiga-Feest
PREMISE OF THE STUDY: A prevailing hypothesis in forest succession is that shade-tolerant species grow more slowly than shade-intolerant species, across light conditions, because they prioritize carbon (C) allocation to storage. We examined this hypothesis in a confamilial pair of species, including one of the fastest-growing tree species in the world (Eucalyptus globulus) and a shade-tolerant, slow-growing species (Luma apiculata). METHODS: Seedlings were subjected to one out of four combinations of light (high vs...
May 10, 2017: American Journal of Botany
https://www.readbyqxmd.com/read/28433908/steam-torrefaction-of-eucalyptus-globulus-for-producing-black-pellets-a-pilot-scale-experience
#11
Luis E Arteaga-Pérez, Héctor Grandón, Mauricio Flores, Cristina Segura, Stephen S Kelley
Steam torrefaction of Eucalyptus globulus was performed at temperatures between 245°C and 265°C in a 100kg/h pilot plant. Torrefied biomass was then pelletized in a 300kg/h unit and the pellets were subject to durability, density and combustion tests. The structural changes measured with FTIR were studied along with the combustion behavior of the materials. Compositional analysis showed that increasing the torrefaction temperature reduced both hemicellulose fraction and overall mass yield (MY). Furthermore, there was a linear relationship between the energy yield (EY) and mass yield (EY=[1...
August 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28431297/nano-zirconia-evaluation-of-its-antioxidant-and-anticancer-activity
#12
Siripireddy Balaji, Badal Kumar Mandal, Shivendu Ranjan, Nandita Dasgupta, Ramalingam Chidambaram
Bioactivity of nanomaterials largely depends on its size, shape and crystalline nature. In this work, the smaller sized spherical shaped nano-zirconia (ZrO2 NPs) (of ~9 to 11nm) was fabricated and studied its biological activity especially antioxidant and cytotoxicity against human colon carcinoma (HCT-116) and human lung carcinoma (A-549) cell lines. To have its real applications in biological aspects readily available Eucalyptus globulus (E. globulus) leaf extract was used as an effective capping and reducing agent for its synthesis...
May 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28388878/medium-term-water-deficit-elicits-distinct-transcriptome-responses-in-eucalyptus-species-of-contrasting-environmental-origin
#13
Antanas V Spokevicius, Josquin Tibbits, Philippe Rigault, Marc-Alexandre Nolin, Caroline Müller, Andrew Merchant
BACKGROUND: Climatic and edaphic conditions over geological timescales have generated enormous diversity of adaptive traits and high speciation within the genus Eucalyptus (L. Hér.). Eucalypt species occur from high rainfall to semi-arid zones and from the tropics to latitudes as high as 43°S. Despite several morphological and metabolomic characterizations, little is known regarding gene expression differences that underpin differences in tolerance to environmental change. Using species of contrasting taxonomy, morphology and physiology (E...
April 7, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28296357/antibacterial-antifungal-and-antiviral-effects-of-three-essential-oil-blends
#14
Amandine Brochot, Angèle Guilbot, Laïla Haddioui, Christine Roques
New agents that are effective against common pathogens are needed particularly for those resistant to conventional antimicrobial agents. Essential oils (EOs) are known for their antimicrobial activity. Using the broth microdilution method, we showed that (1) two unique blends of Cinnamomum zeylanicum, Daucus carota, Eucalyptus globulus and Rosmarinus officinalis EOs (AB1 and AB2; cinnamon EOs from two different suppliers) were active against the fourteen Gram-positive and -negative bacteria strains tested, including some antibiotic-resistant strains...
March 14, 2017: MicrobiologyOpen
https://www.readbyqxmd.com/read/28281322/chemical-composition-antibacterial-antibiofilm-and-synergistic-properties-of-essential-oils-from-eucalyptus-globulus-labill-and-seven-mediterranean-aromatic-plants
#15
Maria Vieira, Lucinda J Bessa, M Rosário Martins, Sílvia Arantes, António P S Teixeira, Ângelo Mendes, Paulo Martins da Costa, Anabela D F Belo
Essential oils (EOs) from Eucalyptus globulus Labill. ssp. globulus and from Mediterranean autochthonous aromatic plants - Thymus mastichina L., Mentha pulegium L., Rosmarinus officinalis L., Calamintha nepeta (L.) Savi ssp. nepeta, Cistus ladanifer L., Foeniculum vulgare L., Dittrichia viscosa (L.) Greuter ssp. viscosa - were extracted by hydrodistillation and characterized by GC-FID and NMR spectroscopy. EOs were evaluated for antimicrobial properties against several bacterial strains, using diverse methods, namely, the agar disc-diffusion method, the microdilution method, the crystal violet assay and the Live/Dead staining for assessment of biofilm formation...
March 9, 2017: Chemistry & Biodiversity
https://www.readbyqxmd.com/read/28278036/emission-factors-of-particulate-matter-polycyclic-aromatic-hydrocarbons-and-levoglucosan-from-wood-combustion-in-south-central-chile
#16
Jorge Jimenez, Oscar Farias, Roberto Quiroz, Jorge Yañez
In south-central Chile, wood stoves have been identified as an important source of air pollution in populated areas. Eucalyptus (Eucalyptus globulus), Chilean oak (Nothofagus oblique), and mimosa (Acacia dealbata) were burned in a single-chamber slow-combustion wood stove at a controlled testing facility located at the University of Concepción, Chile. In each experiment, 2.7-3.1 kg of firewood were combusted while continuously monitoring temperature, exhaust gases, burn rate, and collecting particulate matter samples in Teflon filters under isokinetic conditions for polycyclic aromatic hydrocarbon and levoglucosan analyses...
July 2017: Journal of the Air & Waste Management Association
https://www.readbyqxmd.com/read/28190676/insights-into-temperature-modulation-of-the-eucalyptus-globulus-and-eucalyptus-grandis-antioxidant-and-lignification-subproteomes
#17
Marília Gabriela de Santana Costa, Paulo Mazzafera, Tiago Santana Balbuena
Eucalyptus grandis and Eucalyptus globulus are among the most widely cultivated trees, differing in lignin composition and plantation areas, as E. grandis is mostly cultivated in tropical regions while E. globulus is preferred in temperate areas. As temperature is a key modulator in plant metabolism, a large-scale proteome analysis was carried out to investigate changes in the antioxidant system and the lignification metabolism in plantlets grown at different temperatures. Our strategy allowed the identification of 3111 stem proteins...
May 2017: Phytochemistry
https://www.readbyqxmd.com/read/28173560/application-of-near-infrared-spectroscopy-for-estimation-of-non-structural-carbohydrates-in-foliar-samples-of-eucalyptus-globulus-labilladi%C3%A3-re
#18
A G Quentin, T Rodemann, M-F Doutreleau, M Moreau, N W Davies, Peter Millard
No abstract text is available yet for this article.
January 31, 2017: Tree Physiology
https://www.readbyqxmd.com/read/28073772/a-water-availability-gradient-reveals-the-deficit-level-required-to-affect-traits-in-potted-juvenile-eucalyptus-globulus
#19
Adam B McKiernan, Brad M Potts, Mark J Hovenden, Timothy J Brodribb, Noel W Davies, Thomas Rodemann, Scott A M McAdam, Julianne M O'Reilly-Wapstra
Background and aims: Drought leading to soil water deficit can have severe impacts on plants. Water deficit may lead to plant water stress and affect growth and chemical traits. Plant secondary metabolite (PSM) responses to water deficit vary between compounds and studies, with inconsistent reports of changes to PSM concentrations even within a single species. This disparity may result from experimental water deficit variation among studies, and so multiple water deficit treatments are used to fully assess PSM responses in a single species...
April 1, 2017: Annals of Botany
https://www.readbyqxmd.com/read/28064178/linking-photosynthesis-and-leaf-n-allocation-under-future-elevated-co2-and-climate-warming-in-eucalyptus-globulus
#20
Robert E Sharwood, Kristine Y Crous, Spencer M Whitney, David S Ellsworth, Oula Ghannoum
Leaf-level photosynthetic processes and their environmental dependencies are critical for estimating CO2 uptake from the atmosphere. These estimates use biochemical-based models of photosynthesis that require accurate Rubisco kinetics. We investigated the effects of canopy position, elevated atmospheric CO2 [eC; ambient CO2 (aC)+240 ppm] and elevated air temperature (eT; ambient temperature (aT)+3 °C) on Rubisco content and activity together with the relationship between leaf N and Vcmax (maximal Rubisco carboxylation rate) of 7 m tall, soil-grown Eucalyptus globulus trees...
February 1, 2017: Journal of Experimental Botany
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