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https://www.readbyqxmd.com/read/29350280/selective-precipitation-and-characterization-of-lignin-carbohydrate-complexes-lccs-from-eucalyptus
#1
Bao-Cheng Zhao, Ji-Dong Xu, Bo-Yang Chen, Xue-Fei Cao, Tong-Qi Yuan, Shuang-Fei Wang, Adam Charlton, Run-Cang Sun
Six types of lignin-carbohydrate complex (LCC) fractions were isolated from Eucalyptus. The acidic dioxane treatment applied significantly improved the yield of LCCs. The extraction conditions had a limited impact on the LCC structures and linkages. Characterization of the lignin-carbohydrate complex (LCC) structures and linkages promises to offer insight on plant cell wall chemistry. In this case, Eucalyptus LCCs were extracted by aqueous dioxane, and then precipitated sequentially by 70% ethanol, 100% ethanol, and acidic water (pH = 2)...
January 19, 2018: Planta
https://www.readbyqxmd.com/read/29348059/synthesis-and-evaluation-of-a-superabsorbent-fertilizer-composite-for-maximizing-the-nutrient-and-water-use-efficiency-in-forestry-plantations
#2
E Tubert, V A Vitali, M S Alvarez, F A Tubert, I Baroli, G Amodeo
Reducing fertilizer use is a priority in the quest for sustainable forestry systems. In short rotation Eucalyptus plantations, NPK pellets are routinely added to the seedling's top soil layer at planting, potentially leading to increased seedling mortality, nutrient loss and environmental degradation. To address this triple challenge, the development of efficient fertilization practices is essential. In the present work, we synthesized a crosslinked acrylic-cellulosic superabsorbent composite (SAPH-BAL) containing small amounts of specific nutrients integrated in the polymer matrix...
January 15, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29345423/deep-eutectic-solvent-aqueous-solutions-as-efficient-media-for-the-solubilization-of-hardwood-xylans
#3
Eduarda S Morais, Patrícia V Mendonça, Jorge F J Coelho, Mara G Freire, Carmen S R Freire, João A P Coutinho, Armando J D Silvestre
This work contributes to the development of integrated lignocellulosic-based biorefineries by the pioneering exploitation of hardwood xylans by solubilization and extraction in deep eutectic solvents (DES). DES formed by choline chloride and urea or acetic acid were initially evaluated as solvents for commercial xylan as a model compound. The effects of temperature, molar ratio, and concentration of the DES aqueous solutions were evaluated and optimized by using a response surface methodology. The results obtained demonstrated the potential of these solvents, with 328...
January 18, 2018: ChemSusChem
https://www.readbyqxmd.com/read/29345396/performance-rumen-fermentation-and-blood-metabolites-of-dairy-calves-fed-starter-mixtures-supplemented-with-herbal-plants-essential-oils-or-monensin
#4
M Akbarian-Tefaghi, E Ghasemi, M Khorvash
This study evaluated the supplementation effects of three herbal plants (thyme [THY], eucalyptus [EUC] and celery [CEL]), a commercial phytogenic additive ‎containing essential oils (PFA-EO, Digestarom® P.E.P.) and monensin (MON) in calf starter on performance, rumen fermentation and blood metabolites during pre- (days 3-55) and post-weaning (days 56-70). Sixty-six Holstein dairy calves (3 days of age, 41.2 ± 3 kg of BW) were allocated to one of six starters supplemented with: (i) no additives (CON), (ii) MON (30 mg/kg), (iii) THY (23 g/kg), (iv) CEL (23 g/kg), (v) EUC (23 g/kg) and (vi) PFA-EO (3 g/kg)...
January 18, 2018: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/29343956/essential-oil-loaded-lipid-nanoparticles-for-wound-healing
#5
Francesca Saporito, Giuseppina Sandri, Maria Cristina Bonferoni, Silvia Rossi, Cinzia Boselli, Antonia Icaro Cornaglia, Barbara Mannucci, Pietro Grisoli, Barbara Vigani, Franca Ferrari
Chronic wounds and severe burns are diseases responsible for severe morbidity and even death. Wound repair is a crucial process and tissue regeneration enhancement and infection prevention are key factors to minimize pain, discomfort, and scar formation. The aim of this work was the development of lipid nanoparticles (solid lipid nanoparticles and nanostructured lipid carriers [NLC]), to be loaded with eucalyptus or rosemary essential oils and to be used, as medical devices, to enhance healing of skin wounds...
2018: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29343313/eucalyptus-leaves-powder-antibiotic-and-probiotic-addition-to-broiler-diets-effect-on-growth-performance-immune-response-blood-components-and-carcass-traits
#6
H Mashayekhi, M Mazhari, O Esmaeilipour
The study was conducted to investigate the effects of different levels of eucalyptus powder (EP), virginiamycin and probiotic on performance, immunity, blood components and carcass traits of broiler chickens. A total of 250, 1-day-old male broiler chickens (Ross 308) were randomly allocated to five treatments with five replicates and 10 chicks each, as a completely randomized design. The dietary treatments consisted of: basal diet (BD), BD+0.25% EP, BD+0.5% EP, BD+0.01% of diet probiotic (Protexin), BD+0.02% of diet antibiotic (virginiamycin)...
January 18, 2018: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/29327437/intra-species-variation-in-a-widely-distributed-tree-species-regulates-the-responses-of-soil-microbiome-to-different-temperature-regimes
#7
Cui-Jing Zhang, Manuel Delgado-Baquerizo, John E Drake, Peter B Reich, Mark G Tjoelker, David T Tissue, Jun-Tao Wang, Ji-Zheng He, Brajesh K Singh
Plant characteristics in different provenances within a single species may vary in response to climate change, which might alter soil microbial communities and ecosystem functions. We conducted a glasshouse experiment and grew seedlings of three provenances (temperate, subtropical and tropical origins) of a tree species (i.e. Eucalyptus tereticornis) at different growth temperatures (18, 21.5, 25, 28.5, 32 and 35.5°C) for 54 days. At the end of the experiment, bacterial and fungal community composition, diversity and abundance were characterized...
January 12, 2018: Environmental Microbiology Reports
https://www.readbyqxmd.com/read/29325002/traits-and-trade-offs-in-whole-tree-hydraulic-architecture-along-the-vertical-axis-of-eucalyptus-grandis
#8
Sebastian Pfautsch, Michael J Aspinwall, John E Drake, Larissa Chacon-Doria, Rob J A Langelaan, David T Tissue, Mark G Tjoelker, Frederic Lens
Background and Aims: Sapwood traits like vessel diameter and intervessel pit characteristics play key roles in maintaining hydraulic integrity of trees. Surprisingly little is known about how sapwood traits covary with tree height and how such trait-based variation could affect the efficiency of water transport in tall trees. This study presents a detailed analysis of structural and functional traits along the vertical axes of tall Eucalyptus grandis trees. Methods: To assess a wide range of anatomical and physiological traits, light and electron microscopy was used, as well as field measurements of tree architecture, water use, stem water potential and leaf area distribution...
January 9, 2018: Annals of Botany
https://www.readbyqxmd.com/read/29324770/phosphorus-application-reduces-aluminum-toxicity-in-two-eucalyptus-clones-by-increasing-its-accumulation-in-roots-and-decreasing-its-content-in-leaves
#9
Weichao Teng, Yachao Kang, Wenjuan Hou, Houzhen Hu, Wenji Luo, Jie Wei, Linghui Wang, Boyu Zhang
Under acidic conditions, aluminum (Al) toxicity is an important factor limiting plant productivity; however, the application of phosphorus (P) might alleviate the toxic effects of Al. In this study, seedlings of two vegetatively propagated Eucalyptus clones, E. grandis × E. urophylla 'G9' and E. grandis × E. urophylla 'DH32-29'were subjected to six treatments (two levels of Al stress and three levels of P). Under excessive Al stress, root Al content was higher, whereas shoot and leaf Al contents were lower with P application than those without P application...
2018: PloS One
https://www.readbyqxmd.com/read/29316093/trees-tolerate-an-extreme-heatwave-via-sustained-transpirational-cooling-and-increased-leaf-thermal-tolerance
#10
John E Drake, Mark G Tjoelker, Angelica Vårhammar, Belinda E Medlyn, Peter B Reich, Andrea Leigh, Sebastian Pfautsch, Chris J Blackman, Rosana López, Michael J Aspinwall, Kristine Y Crous, Remko A Duursma, Dushan Kumarathunge, Martin G De Kauwe, Mingkai Jiang, Adrienne B Nicotra, David T Tissue, Brendan Choat, Owen K Atkin, Craig V M Barton
Heatwaves are likely to increase in frequency and intensity with climate change, which may impair tree function and forest C uptake. However, we have little information regarding the impact of extreme heatwaves on the physiological performance of large trees in the field. Here, we grew Eucalyptus parramattensis trees for one year with experimental warming (+3 °C) in a field setting, until they were greater than 6-m-tall. We withheld irrigation for one month to dry the surface soils and then implemented an extreme heatwave treatment of four consecutive days with air temperatures exceeding 43 °C, while monitoring whole-canopy exchange of CO2 and H2 O, leaf temperatures, leaf thermal tolerance, and leaf and branch hydraulic status...
January 7, 2018: Global Change Biology
https://www.readbyqxmd.com/read/29302718/action-of-different-types-of-endoxylanases-on-eucalyptus-xylan-in-situ
#11
Vladimír Puchart, Lucia Fraňová, Kristian B R Mørkeberg Krogh, Tine Hoff, Peter Biely
Most studies of the mode of action of industrially important endoxylanases have been done on alkali extracted-plant xylan. In just few cases, the native form of the polysaccharide, acetylated xylan, was used as a substrate. In this work action of xylanases belonging to three glycoside hydrolase families, GH10, GH11, and GH30 was investigated on acetylglucuronoxylan directly in hardwood cell walls. Powdered eucalyptus wood was used as xylanase substrate. Enzyme-generated fragments were characterized by TLC, MALDI ToF MS, and NMR spectroscopy...
January 4, 2018: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/29295525/influence-of-botanical-origin-and-chemical-composition-on-the-protective-effect-against-oxidative-damage-and-the-capacity-to-reduce-in-vitro-bacterial-biofilms-of-monofloral-honeys-from-the-andean-region-of-ecuador
#12
Marilyn García-Tenesaca, Eillen S Navarrete, Gabriel A Iturralde, Irina M Villacrés Granda, Eduardo Tejera, Pablo Beltrán-Ayala, Francesca Giampieri, Maurizio Battino, José M Alvarez-Suarez
Three types of monofloral honey from the Andean regions of Ecuador (Avocado, Eucalyptus, and Rapeseed honey) were analyzed to determine their floral origin, physicochemical parameters, chemical composition, antioxidant capacity, and their capacity to reduce in vitro bacterial biofilms. The chemical composition varied considerably depending on floral origin. The highest values of bioactive compounds were found in Avocado honey, classified as dark amber in color, while the lowest values were found in Eucalyptus honey followed by Rapeseed honey, both classified as extra light amber...
December 23, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29285352/evidence-for-in-vitro-antiophidian-properties-of-aqueous-buds-extract-of-eucalyptus-against-montivipera-bornmuelleri-venom
#13
Joseph Khoury, Ranin Dabbousy, Riyad Sadek, Sayed Antoun, Walid Hleihel, Christian Legros, Ziad Fajloun
Because snake venoms are complex mixtures of bioactive molecules, snake bites produce a large panel of symptoms which cannot be totally prevented by current antivenoms. Thus investigating plant extracts for antivenomics therapy approaches seemed relevant. Here, we evaluated the potency of the aqueous Buds extract of Eucalyptus (ABEE) to counteract the main enzymatic activities of Montivipera bornmuelleri venom. We showed that ABEE efficiently counteracts the proteolytic, Phospholipases A2 (PLA2), and L-aminoacid oxidase activities (LAAO) of M...
2017: Journal of Venom Research
https://www.readbyqxmd.com/read/29285309/1-8-cineole-prevents-uvb-induced-skin-carcinogenesis-by-targeting-the-aryl-hydrocarbon-receptor
#14
Jangho Lee, Su Jeong Ha, Joon Park, Yong Ho Kim, Nam Hyouck Lee, Young Eon Kim, Yoonsook Kim, Kyung-Mo Song, Sung Keun Jung
1,8-cineole is a natural monoterpene cyclic ether present in Eucalyptus, and has been reported to exhibit anti-inflammatory and antioxidant effects. However, the preventive effect of 1,8-cineole on skin carcinogenesis and the molecular mechanism of action responsible remains unknown. In the present study, we investigated the effect of 1,8-cineole on UVB-induced skin carcinogenesis. 1,8-cineole inhibited UVB-induced cyclooxygenase-2 (COX-2) protein and mRNA expression and prostaglandin E2 (PGE2) generation in HaCaT cells...
December 1, 2017: Oncotarget
https://www.readbyqxmd.com/read/29277050/combining-autohydrolysis-and-ionic-liquid-microwave-treatment-to-enhance-enzymatic-hydrolysis-of-eucalyptus-globulus-wood
#15
Victoria Rigual, Tamara M Santos, Juan Carlos Domínguez, M Virginia Alonso, Mercedes Oliet, Francisco Rodriguez
The combination of autohydrolysis and ionic liquid microwave treatments of eucalyptus wood have been studied to facilitate sugar production in a subsequent enzymatic hydrolysis step. Three autohydrolysis conditions (150 °C, 175 °C and 200 °C) in combination with two ionic liquid temperatures (80 °C and 120 °C) were compared in terms of chemical composition, enzymatic digestibility and sugar production. Morphology was measured (using SEM) and the biomass surface was visualized with confocal fluorescence microscopy...
December 14, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/29275527/attraction-of-male-nymphs-to-adult-male-volatiles-in-the-bronze-bug-thaumastocoris-peregrinus-carpintero-dellape-heteroptera-thaumastocoridae
#16
M V Calvo, H F Groba, G Martínez, C Sellanes, C Rossini, A González
The bronze bug, Thaumastocoris peregrinus Carpintero & Dellape (Heteroptera: Thaumastocoridae), is an exotic emerging pest in Eucalyptus commercial forests in South America, Africa and southern Europe. Information on the chemical communication system and reproductive ecology of this insect is scant, and it may be relevant for designing management strategies for eucalypt plantations. Adults and nymphs usually aggregate in the field, possibly by means of chemical signals. Males emit large amounts of 3-methyl-2-butenyl butyrate, which attracts conspecific adult males but not females...
December 23, 2017: Neotropical Entomology
https://www.readbyqxmd.com/read/29247597/metabolic-responses-of-eucalyptus-species-to-different-temperature-regimes
#17
Joao Benhur Mokochinski, Paulo Mazzafera, Alexandra Christine Helena Frankland Sawaya, Roland Mumm, Ric Cornelis Hendricus de Vos, Robert David Hall
Species and hybrids of Eucalyptus are the world's most widely planted hardwood trees. They are cultivated across a wide range of latitudes and therefore environmental conditions. In this context, comprehensive metabolomics approaches have been used to assess how different temperature regimes may affect the metabolism of three species of Eucalyptus, E. dunnii, E. grandis and E. pellita. Young plants were grown for 53 days in the greenhouse and then transferred to growth chambers at 10, 20 or 30°C for another 7 days...
December 16, 2017: Journal of Integrative Plant Biology
https://www.readbyqxmd.com/read/29247246/new-microsatellite-markers-for-population-studies-of-phytophthora-cinnamomi-an-important-global-pathogen
#18
J Engelbrecht, T A Duong, N V D Berg
Phytophthora cinnamomi is the causal agent of root rot, canker and dieback of thousands of plant species around the globe. This oomycete not only causes severe economic losses but also threatens natural ecosystems. In South Africa, P. cinnamomi affects eucalyptus, avocado, macadamia and indigenous fynbos. Despite being one of the most important plant pathogens with a global distribution, little information is available regarding origin, invasion history and population biology. This is partly due to the limited number of molecular markers available for studying P...
December 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29242775/calonectria-species-isolated-from-eucalyptus-plantations-and-nurseries-in-south-china
#19
JieQiong Li, Michael J Wingfield, QianLi Liu, Irene Barnes, Jolanda Roux, Lorenzo Lombard, Pedro W Crous, ShuaiFei Chen
Diseases caused by species of Calonectria (Ca.) represent a serious threat to the growth and sustainability of Eucalyptus plantations in China. Symptoms caused by these fungi mainly include leaf blight on trees in plantations and rotting of stems and leaves in nurseries. Extensive surveys have recently been conducted where Calonectria species were collected in Eucalyptus plantations and nurseries in the FuJian, GuangDong, GuangXi, and YunNan Provinces of South China. Additional isolates were baited from soil samples in the Hong Kong Region...
December 2017: IMA Fungus
https://www.readbyqxmd.com/read/29241117/influence-of-direct-and-alternating-current-electric-fields-on-efficiency-promotion-and-leaching-risk-alleviation-of-chelator-assisted-phytoremediation
#20
Jie Luo, Limei Cai, Shihua Qi, Jian Wu, Xiaowen Sophie Gu
Direct and alternating current electric fields with various voltages were used to improve the decontamination efficiency of chelator assisted phytoremediation for multi-metal polluted soil. The alleviation effect of electric field on leaching risk caused by chelator application during phytoremediation process was also evaluated. Biomass yield, pollutant uptake and metal leaching retardation under alternating current (AC) and direct current (DC) electric fields were compared. The biomass yield of Eucalyptus globulus under AC fields with various voltages (2, 4 and 10 V) were 3...
December 11, 2017: Ecotoxicology and Environmental Safety
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