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https://www.readbyqxmd.com/read/28190676/insights-into-temperature-modulation-of-the-eucalyptus-globulus-and-eucalyptus-grandis-antioxidant-and-lignification-subproteomes
#1
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...
February 9, 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
#2
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
#3
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...
January 10, 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
#4
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 V cmax (maximal Rubisco carboxylation rate) of 7 m tall, soil-grown Eucalyptus globulus trees...
January 7, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28013374/mosquito-repellent-activity-of-volatile-oils-from-selected-aromatic-plants
#5
Lalthazuali, Nisha Mathew
Essential oils from fresh leaves of four aromatic plants viz., Ocimum sanctum, Mentha piperita, Eucalyptus globulus and Plectranthus amboinicus were extracted by hydrodistillation. The test solutions were prepared as 20% essential oil in ethanol and positive control as 20% DEET in ethanol. Essential oil blend was prepared as 5% concentration. Nulliparous, 3-5-day-old female adult Aedes aegypti mosquitoes were used for repellency screening as per ICMR protocol. The study showed that the repellency of 20% essential oil of O...
February 2017: Parasitology Research
https://www.readbyqxmd.com/read/27988649/the-australian-ciidae-coleoptera-tenebrionoidea-a-preliminary-revision
#6
John F Lawrence
The Australian ciid fauna is revised based on 75 described species (56 of them new) and three undescribed species, placed in 22 genera (nine of them new and nine newly recorded from Australia). The revision is considered preliminary, since about 50 other undescribed Australian species have been seen (usually as uniques or in short series), and it is likely that more will be found with increased intensive collecting. One additional New Caledonian species is also described, and one Cis species is considered to be based on a mislabelled Hawaiian specimen...
November 25, 2016: Zootaxa
https://www.readbyqxmd.com/read/27965057/visible-light-enhances-the-antimicrobial-effect-of-some-essential-oils
#7
María Soledad Marqués-Calvo, Francesc Codony, Gemma Agustí, Carlos Lahera
The photodisinfection is a topical, broad spectrum antimicrobial technology, targeting bacteria, virus, fungi, and protozoa effective for single cells as for biofilms. Natural molecules have been studied less than synthetic agents in the process but they are currently receiving great interest. Therefore, the aim of this study is to evaluate for the first time if non-coherent blue and red light enhances the antimicrobial activity of some essential oils when standard strains for antibiotic or fungicide tests are enlightened in vitro...
December 10, 2016: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/27905627/-pediculicide-effect-of-a-eucaliptus-globulus-l-formulation
#8
Marcia Avello, Pola Fernández, Marcos Fernández, Berta Schulz, Marta De Diego, Sigrid Mennickent, Pedro Novoa, Edgar Pastene
INTRODUCTION: Pediculosis capitis is a public health problem with a high prevalence. The emergence of parasite resistance to conventional pediculicide is of great concern worldwide. OBJECTIVE: To develop alternatives pediculicide, effective and safe, based on the essential oil of Eucaliptus globulus. METHOD: Through bioassays active concentrations ranges of the essential oil were established, and proceeded to develop a standardized, stable, pharmaceutical form, evaluating its effects on our population...
August 2016: Revista Chilena de Infectología: órgano Oficial de la Sociedad Chilena de Infectología
https://www.readbyqxmd.com/read/27889888/characteristics-of-ash-and-particle-emissions-during-bubbling-fluidised-bed-combustion-of-three-types-of-residual-forest-biomass
#9
João Peres Ribeiro, Estela Domingos Vicente, Célia Alves, Xavier Querol, Fulvio Amato, Luís A C Tarelho
Combustion of residual forest biomass (RFB) derived from eucalypt (Eucalyptus globulus), pine (Pinus pinaster) and golden wattle (Acacia longifolia) was evaluated in a pilot-scale bubbling fluidised bed reactor (BFBR). During the combustion experiments, monitoring of temperature, pressure and exhaust gas composition has been made. Ash samples were collected at several locations along the furnace and flue gas treatment devices (cyclone and bag filter) after each combustion experiment and were analysed for their unburnt carbon content and chemical composition...
November 26, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27881800/genetic-stability-of-physiological-responses-to-defoliation-in-a-eucalypt-and-altered-chemical-defence-in-regrowth-foliage
#10
Christina L Borzak, Brad M Potts, Karen M Barry, Elizabeth A Pinkard, Julianne M O'Reilly-Wapstra
Defoliation may initiate physiological recovery and chemical defence mechanisms that allow a plant to improve fitness after damage. Such responses may result in changes in plant resource allocation that influence growth and foliar chemistry. In this study, we investigated the nature and stability of the defoliation response of juvenile plants from three divergent populations of Eucalyptus globulus Labill. A partial defoliation treatment that removed all upper crown leaves and the apical buds was applied to plants sourced from eight families from each of three populations representing contrasting chemical resistance to mammalian herbivory...
November 22, 2016: Tree Physiology
https://www.readbyqxmd.com/read/27878983/enzymatic-specific-production-and-chemical-functionalization-of-phenylpropanone-platform-monomers-from-lignin
#11
Yukari Ohta, Ryoichi Hasegawa, Kanako Kurosawa, Allyn H Maeda, Toshio Koizumi, Hiroshi Nishimura, Hitomi Okada, Chen Qu, Kaori Saito, Takashi Watanabe, Yuji Hatada
Enzymatic catalysis is an ecofriendly strategy for the production of high-value low-molecular-weight aromatic compounds from lignin. Although well-definable aromatic monomers have been obtained from synthetic lignin-model dimers, enzymatic-selective synthesis of platform monomers from natural lignin has not been accomplished. In this study, we successfully achieved highly specific synthesis of aromatic monomers with a phenylpropane structure directly from natural lignin using a cascade reaction of β-O-4-cleaving bacterial enzymes in one pot...
November 22, 2016: ChemSusChem
https://www.readbyqxmd.com/read/27876218/antifungal-activities-of-selected-essential-oils-against-fusarium-oxysporum-f-sp-lycopersici-1322-with-emphasis-on-syzygium-aromaticum-essential-oil
#12
Abhishek Sharma, Sasireka Rajendran, Ankit Srivastava, Satyawati Sharma, Bishwajit Kundu
The antifungal effects of four essential oils viz., clove (Syzygium aromaticum), lemongrass (Cymbopogon citratus), mint (Mentha × piperita) and eucalyptus (Eucalyptus globulus) were evaluated against wilt causing fungus, Fusarium oxysporum f. sp. lycopersici 1322. The inhibitory effect of oils showed dose-dependent activity on the tested fungus. Most active being the clove oil, exhibiting complete inhibition of mycelial growth and spore germination at 125 ppm with IC50 value of 18.2 and 0.3 ppm, respectively...
November 18, 2016: Journal of Bioscience and Bioengineering
https://www.readbyqxmd.com/read/27809973/essential-oils-and-beauveria-bassiana-against-dermanyssus-gallinae-acari-dermanyssidae-towards-new-natural-acaricides
#13
Davide Immediato, Luciana Aguiar Figueredo, Roberta Iatta, Antonio Camarda, Rafaela Lira Nogueira de Luna, Annunziata Giangaspero, Sinval Pinto Brandão-Filho, Domenico Otranto, Claudia Cafarchia
Essential oils (EOs) and entomopathogenic fungi such as Beauveria bassiana (Bb) strains have the potential to be used as alternative insecticides and acaricides for controlling ectoparasites as Dermanyssus gallinae. These compounds have some limitations in their use: the acaricidal effect of EOs is rapid, but short-lived, whilst that of Bb is delayed, but long-lived. To evaluate the effect of both compounds combined against D. gallinae, the non-toxic dose of Eucalyptus globulus, Eucalyptus citriodora, Thymus vulgaris and Eugenia caryophyllata essential oils were firstly calculated for "native" strains of Bb...
October 15, 2016: Veterinary Parasitology
https://www.readbyqxmd.com/read/27806566/characterization-of-the-interunit-bonds-of-lignin-oligomers-released-by-acid-catalyzed-selective-solvolysis-of-cryptomeria-japonica-and-eucalyptus-globulus-woods-via-thioacidolysis-and-2d-nmr
#14
Kaori Saito, Atsushi Kaiho, Ryo Sakai, Hiroshi Nishimura, Hitomi Okada, Takashi Watanabe
Acid-catalyzed degradation of lignin in toluene containing methanol selectively yields C6-C2 lignin monomers and releases lignin oligomers, a potential raw feedstock for epoxy resins. We herein characterize the structures of the lignin oligomers by focusing on the changes in the interunit linkage types during solvolysis. The oligomeric lignin products were analyzed via thioacidolysis and 2D-HSQC-NMR. The results show that lignin oligomers ranging from monomers to tetramers are released through considerable cleavage of the β-O-4 linkages...
December 7, 2016: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/27766694/stable-carbon-isotope-analyses-of-nanogram-quantities-of-particulate-organic-carbon-pollen-with-laser-ablation-nano-combustion-gas-chromatography-isotope-ratio-mass-spectrometry
#15
Linda van Roij, Appy Sluijs, Jelmer J Laks, Gert-Jan Reichart
RATIONALE: Analyses of stable carbon isotope ratios (δ(13) C values) of organic and inorganic matter remains have been instrumental for much of our understanding of present and past environmental and biological processes. Until recently, the analytical window of such analyses has been limited to samples containing at least several μg of carbon. METHODS: Here we present a setup combining laser ablation, nano combustion gas chromatography and isotope ratio mass spectrometry (LA/nC/GC/IRMS)...
January 15, 2017: Rapid Communications in Mass Spectrometry: RCM
https://www.readbyqxmd.com/read/27672188/application-of-near-infrared-spectroscopy-for-estimation-of-non-structural-carbohydrates-in-foliar-samples-of-eucalyptus-globulus-labilladi%C3%A3-re
#16
A G Quentin, T Rodemann, M-F Doutreleau, M Moreau, N W Davies
Near-infrared reflectance spectroscopy (NIRS) is frequently used for the assessment of key nutrients of forage or crops but remains underused in ecological and physiological studies, especially to quantify non-structural carbohydrates. The aim of this study was to develop calibration models to assess the content in soluble sugars (fructose, glucose, sucrose) and starch in foliar material of Eucalyptus globulus A partial least squares (PLS) regression was used on the sample spectral data and was compared to the contents measured using standard wet chemistry methods...
September 26, 2016: Tree Physiology
https://www.readbyqxmd.com/read/27624742/google-street-view-as-an-alternative-method-to-car-surveys-in-large-scale-vegetation-assessments
#17
Ernesto Deus, Joaquim S Silva, Filipe X Catry, Miguel Rocha, Francisco Moreira
Car surveys (CS) are a common method for assessing the distribution of alien invasive plants. Google Street View (GSV), a free-access web technology where users may experience a virtual travel along roads, has been suggested as a cost-effective alternative to car surveys. We tested if we could replicate the results from a countrywide survey conducted by car in Portugal using GSV as a remote sensing tool, aiming at assessing the distribution of Eucalyptus globulus Labill. wildlings on roadsides adjacent to eucalypt stands...
October 2015: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/27614358/first-insights-into-the-functional-role-of-vasicentric-tracheids-and-parenchyma-in-eucalyptus-species-with-solitary-vessels-do-they-contribute-to-xylem-efficiency-or-safety
#18
Antonio José Barotto, María Elena Fernandez, Javier Gyenge, Ariel Meyra, Alejandro Martinez-Meier, Silvia Monteoliva
The relationship between hydraulic specific conductivity (ks) and vulnerability to cavitation (VC) with size and number of vessels has been studied in many angiosperms. However, few of the studies link other cell types (vasicentric tracheids (VT), fibre-tracheids, parenchyma) with these hydraulic functions. Eucalyptus is one of the most important genera in forestry worldwide. It exhibits a complex wood anatomy, with solitary vessels surrounded by VT and parenchyma, which could serve as a good model to investigate the functional role of the different cell types in xylem functioning...
December 2016: Tree Physiology
https://www.readbyqxmd.com/read/27591193/morphological-diversity-of-blastula-formation-and-gastrulation-in-temnopleurid-sea-urchins
#19
Chisato Kitazawa, Tsubasa Fujii, Yuji Egusa, Miéko Komatsu, Akira Yamanaka
Embryos of temnopleurid sea urchins exhibit species-specific morphologies. While Temnopleurus toreumaticus has a wrinkled blastula and then invaginates continuously at gastrulation, others have a smooth blastula and their invagination is stepwise. We studied blastula and gastrula formation in four temnopleurids using light and scanning electron microscopy to clarify the mechanisms producing these differences. Unlike T. toreumaticus, blastomeres of mid-blastulae in T. reevesii, T. hardwickii and Mespilia globulus formed pseudopods...
November 15, 2016: Biology Open
https://www.readbyqxmd.com/read/27561513/furfural-production-in-biphasic-media-using-an-acidic-ionic-liquid-as-a-catalyst
#20
Susana Peleteiro, Valentín Santos, Juan C Parajó
Ionic liquids are valuable tools for biorefineries. This study provides an experimental assessment on the utilization of an acidic ionic liquid (1-butyl-3-methylimidazolium hydrogen sulfate) as a catalyst for furfural production in water/solvent media. The substrates employed in experiments were commercial xylose (employed as a reference compound) or hemicellulosic saccharides obtained by hydrothermal processing of Eucalyptus globulus wood (which were employed as produced, after membrane concentration or after freeze-drying)...
November 20, 2016: Carbohydrate Polymers
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