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https://www.readbyqxmd.com/read/28651381/meta-barcoding-in-combination-with-palynological-inference-is-a-potent-diagnostic-marker-for-honey-floral-composition
#1
Rama Chandra Laha, Surajit De Mandal, Lalhmanghai Ralte, Laldinfeli Ralte, Nachimuthu Senthil Kumar, Guruswami Gurusubramanian, Ramalingam Satishkumar, Raja Mugasimangalam, Nagesh Aswathnarayana Kuravadi
Identification of floral samples present in honey is important in order to determine the medicinal value, enhance the production of honey as well as to conserve the honey bees. Traditional approaches for studying pollen samples are based on microscopic observation which is laborious, time intensive and requires specialized palynological knowledge. Present study compares two composite honey metagenome collected from 20 samples in Mizoram, Northeast India using three gene loci- rbcL, matK and ITS2 that was sequenced using a next-generation sequencing (NGS) platform (Illumina Miseq)...
December 2017: AMB Express
https://www.readbyqxmd.com/read/28649260/tomato-udp-glucose-sterol-glycosyltransferases-a-family-of-developmental-and-stress-regulated-genes-that-encode-cytosolic-and-membrane-associated-forms-of-the-enzyme
#2
Karla Ramirez-Estrada, Nídia Castillo, Juan A Lara, Monserrat Arró, Albert Boronat, Albert Ferrer, Teresa Altabella
Sterol glycosyltransferases (SGTs) catalyze the glycosylation of the free hydroxyl group at C-3 position of sterols to produce sterol glycosides. Glycosylated sterols and free sterols are primarily located in cell membranes where in combination with other membrane-bound lipids play a key role in modulating their properties and functioning. In contrast to most plant species, those of the genus Solanum contain very high levels of glycosylated sterols, which in the case of tomato may account for more than 85% of the total sterol content...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28647539/chemical-addressability-of-potato-virus-x-for-its-applications-in-bio-nanotechnology
#3
Duc H T Le, He Hu, Ulrich Commandeur, Nicole F Steinmetz
Potato virus X (PVX), a type member of the plant virus potexvirus group, offers a unique nanotechnology platform based on its high aspect ratio, flexible filamentous shape. The PVX platform has already been engineered and studied for its uses in imaging, drug delivery, and immunotherapies. While genetic engineering procedures are well established for PVX, there is limited information about chemical conjugation strategies for functionalizing PVX, partly due to the lack of structural information of PVX at high resolution...
June 21, 2017: Journal of Structural Biology
https://www.readbyqxmd.com/read/28646307/a-step-by-step-selection-method-for-the-location-and-the-size-of-a-waste-to-energy-facility-targeting-the-maximum-output-energy-and-minimization-of-gate-fee
#4
Efstathios Kyriakis, Constantinos Psomopoulos, Panagiotis Kokkotis, Athanasios Bourtsalas, Nikolaos Themelis
This study attempts the development of an algorithm in order to present a step by step selection method for the location and the size of a waste-to-energy facility targeting the maximum output energy, also considering the basic obstacle which is in many cases, the gate fee. Various parameters identified and evaluated in order to formulate the proposed decision making method in the form of an algorithm. The principle simulation input is the amount of municipal solid wastes (MSW) available for incineration and along with its net calorific value are the most important factors for the feasibility of the plant...
June 23, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28646139/genome-wide-identification-of-major-intrinsic-proteins-in-glycine-soja-and-characterization-of-gmtip2-1-function-under-salt-and-water-stress
#5
Da-Yong Zhang, Manoj Kumar, Ling Xu, Qun Wan, Yi-Hong Huang, Zhao-Long Xu, Xiao-Lan He, Jin-Biao Ma, Girdhar K Pandey, Hong-Bo Shao
In different plant species, aquaporins (AQPs) facilitate water movement by regulating root hydraulic conductivity under diverse stress conditions such as salt and water stresses. To improve survival and yield of crop plants, a detailed understanding of stress responses is imperative and required. We used Glycine soja genome as a tool to study AQPs, considering it shows abundant genetic diversity and higher salt environment tolerance features and identified 62 Gs AQP genes. Additionally, this study identifies major aquaporins responsive to salt and drought stresses in soybean and elucidates their mode of action through yeast two-hybrid assay and BiFC...
June 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28645318/detecting-consistent-patterns-of-directional-adaptation-using-differential-selection-codon-models
#6
Sahar Parto, Nicolas Lartillot
BACKGROUND: Phylogenetic codon models are often used to characterize the selective regimes acting on protein-coding sequences. Recent methodological developments have led to models explicitly accounting for the interplay between mutation and selection, by modeling the amino acid fitness landscape along the sequence. However, thus far, most of these models have assumed that the fitness landscape is constant over time. Fluctuations of the fitness landscape may often be random or depend on complex and unknown factors...
June 23, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/28645274/buccal-mucosa-micronuclei-counts-in-relation-to-exposure-to-low-dose-rate-radiation-from-the-chornobyl-nuclear-accident-and-other-medical-and-occupational-radiation-exposures
#7
D Bazyka, S C Finch, I M Ilienko, O Lyaskivska, I Dyagil, N Trotsiuk, N Gudzenko, V V Chumak, K M Walsh, J Wiemels, M P Little, L B Zablotska
BACKGROUND: Ionizing radiation is a well-known carcinogen. Chromosome aberrations, and in particular micronuclei represent an early biological predictor of cancer risk. There are well-documented associations of micronuclei with ionizing radiation dose in some radiation-exposed groups, although not all. That associations are not seen in all radiation-exposed groups may be because cells with micronuclei will not generally pass through mitosis, so that radiation-induced micronuclei decay, generally within a few years after exposure...
June 23, 2017: Environmental Health: a Global Access Science Source
https://www.readbyqxmd.com/read/28645231/evolution-of-hormone-signaling-networks-in-plant-defense
#8
Matthias L Berens, Hannah M Berry, Akira Mine, Cristiana T Argueso, Kenichi Tsuda
Studies with model plants such as Arabidopsis thaliana have revealed that phytohormones are central regulators of plant defense. The intricate network of phytohormone signaling pathways enables plants to activate appropriate and effective defense responses against pathogens as well as to balance defense and growth. The timing of the evolution of most phytohormone signaling pathways seems to coincide with the colonization of land, a likely requirement for plant adaptations to the more variable terrestrial environments, which included the presence of pathogens...
June 23, 2017: Annual Review of Phytopathology
https://www.readbyqxmd.com/read/28644611/transient-fiber-mats-of-electrospun-poly-propylene-carbonate-composites-with-remarkable-mechanical-strength
#9
Peter Ohlendorf, Alexander Ruyack, Amanda K Leonardi, Chengjian Shi, Christine Cuppoletti, Ian Bruce, Amit Lal, Christopher K Ober
Polymers with a triggered decomposition are attractive for an array of applications ranging from patterning to transient packaging materials as well as for environmental protection. This work showed for the first time UV and thermally triggered transience in fiber mats using poly(propylene carbonate) (PPC) composites. The electrospun PPC-composite fiber mats combine excellent decomposition performance (due to the high surface to volume ratio) with high stiffness and thus represent a new class of materials enabling innovative applications such as transient filter materials, short-time plant protection materials as well as temporary lightweight materials for aerospace engineering...
June 23, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28644007/cyclotides-as-tools-in-chemical-biology
#10
Simon J de Veer, Joachim Weidmann, David J Craik
Among the various molecules that plants produce for defense against pests and pathogens, cyclotides stand out as exceptionally stable and structurally unique. These ribosomally synthesized peptides are around 30 amino acids in size, and are stabilized by a head-to-tail cyclic peptide backbone and three disulfide bonds that form a cystine knot. They occur in certain plants of the Rubiaceae, Violaceae, Cucurbitaceae, Fabaceae, and Solanaceae families, with an individual plant producing up to hundreds of different cyclotides...
June 23, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28642770/interplay-between-carotenoids-abscisic-acid-and-jasmonate-guides-the-compatible-rice-meloidogyne-graminicola-interaction
#11
Tina Kyndt, Kamrun Nahar, Ashley Haeck, Ruben Verbeek, Kristof Demeestere, Godelieve Gheysen
In this study, we have characterized the role of carotenoids and chlorophyll in the compatible interaction between the sedentary root knot nematode (RKN) Meloidogyne graminicola and the monocot model plant rice (Oryza sativa). Previous transcriptome data showed a differential expression of carotenoid and chlorophyll biosynthesis genes in nematode-induced giant cells and gall tissue. Metabolite measurement showed that galls indeed accumulate chlorophyll a, b and carotenoids, as well as the hormone abscisic acid (ABA)...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28640741/an-endophytic-fusarium-sp-isolated-from-monarda-citriodora-produces-the-industrially-important-plant-like-volatile-organic-compound-hexanal
#12
Meenu Katoch, Kushal Bindu, Shipra Phull, M K Verma
An endophytic fungus, MC_25L, has been isolated from the leaves of MonardacitriodoraCerv. ex Lag., a medicinal and aromatic herb from the northwestern Himalayas. It produces a fruity fragrance while growing on potato dextrose agar, suggesting that it is producing volatile organic compounds (VOCs). The endophyte inhibited the growth of plant pathogens such asSclerotiniasp. and Aspergillusflavus by virtue of VOCs. Identification of MC_25L based on morphological and microscopic features, as well as ITS-based rDNA sequence analysis, revealed that it is a Fusariumsp...
June 22, 2017: Microbiology
https://www.readbyqxmd.com/read/28639109/occurrence-of-naproxen-ibuprofen-and-diclofenac-residues-in-wastewater-and-river-water-of-kwazulu-natal-province-in-south-africa
#13
Lawrence Mzukisi Madikizela, Luke Chimuka
The present paper reports a detailed study that is based on the monitoring of naproxen, ibuprofen, and diclofenac in Mbokodweni River and wastewater treatment plants (WWTPs) located around the city of Durban in KwaZulu-Natal Province of South Africa. Target compounds were extracted from water samples using a multi-template molecularly imprinted solid-phase extraction prior to separation and quantification on a high-performance liquid chromatography equipped with photo diode array detector. The analytical method yielded the detection limits of 0...
July 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28638050/de-novo-yeast-genome-assemblies-from-minion-pacbio-and-miseq-platforms
#14
Francesca Giordano, Louise Aigrain, Michael A Quail, Paul Coupland, James K Bonfield, Robert M Davies, German Tischler, David K Jackson, Thomas M Keane, Jing Li, Jia-Xing Yue, Gianni Liti, Richard Durbin, Zemin Ning
Long-read sequencing technologies such as Pacific Biosciences and Oxford Nanopore MinION are capable of producing long sequencing reads with average fragment lengths of over 10,000 base-pairs and maximum lengths reaching 100,000 base- pairs. Compared with short reads, the assemblies obtained from long-read sequencing platforms have much higher contig continuity and genome completeness as long fragments are able to extend paths into problematic or repetitive regions. Many successful assembly applications of the Pacific Biosciences technology have been reported ranging from small bacterial genomes to large plant and animal genomes...
June 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28636365/sustainable-elastomers-from-renewable-biomass
#15
Zhongkai Wang, Liang Yuan, Chuanbing Tang
Sustainable elastomers have undergone explosive growth in recent years, partly due to the resurgence of biobased materials prepared from renewable natural resources. However, mounting challenges still prevail: How can the chemical compositions and macromolecular architectures of sustainable polymers be controlled and broadened? How can their processability and recyclability be enabled? How can they compete with petroleum-based counterparts in both cost and performance? Molecular-biomass-derived polymers, such as polymyrcene, polymenthide, and poly(ε-decalactone), have been employed for constructing thermoplastic elastomers (TPEs)...
June 21, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28636085/herbivore-performance-and-plant-defense-after-sequential-attacks-by-inducing-and-suppressing-herbivores
#16
Elisa Faria de Oliveira, Angelo Pallini, Arne Janssen
It is well known that herbivore-induced plant defence alter host plant quality and can affect the behavior and performance of later arriving herbivores. Effects of sequential attacks by herbivores that either suppress or induce plant defenses are less well studied. We sequentially infested leaves of tomato plants with a strain of the phytophagous spider mite Tetranychus urticae that induces plant defenses and the closely related Tetranychus evansi, which suppresses plant defenses. Plant quality was quantified through oviposition of both spider mite species and by measuring proteinase inhibitor activity using plant material that had been sequentially attacked by both herbivore species...
June 21, 2017: Insect Science
https://www.readbyqxmd.com/read/28634471/a-chitin-binding-protein-purified-from-moringa-oleifera-seeds-presents-anticandidal-activity-by-increasing-cell-membrane-permeability-and-reactive-oxygen-species-production
#17
João X S Neto, Mirella L Pereira, Jose T A Oliveira, Lady C B Rocha-Bezerra, Tiago D P Lopes, Helen P S Costa, Daniele O B Sousa, Bruno A M Rocha, Thalles B Grangeiro, José E C Freire, Ana Cristina O Monteiro-Moreira, Marina D P Lobo, Raimunda S N Brilhante, Ilka M Vasconcelos
Candida species are opportunistic pathogens that infect immunocompromised and/or immunosuppressed patients, particularly in hospital facilities, that besides representing a significant threat to health increase the risk of mortality. Apart from echinocandins and triazoles, which are well tolerated, most of the antifungal drugs used for candidiasis treatment can cause side effects and lead to the development of resistant strains. A promising alternative to the conventional treatments is the use of plant proteins...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28630801/characterization-of-the-transcriptome-and-est-ssr-development-in-boea-clarkeana-a-desiccation-tolerant-plant-endemic-to-china
#18
Ying Wang, Kun Liu, De Bi, Shoubiao Zhou, Jianwen Shao
BACKGROUND: Desiccation-tolerant (DT) plants can recover full metabolic competence upon rehydration after losing most of their cellular water (>95%) for extended periods of time. Functional genomic approaches such as transcriptome sequencing can help us understand how DT plants survive and respond to dehydration, which has great significance for plant biology and improving the drought tolerance of crops. Boea clarkeana Hemsl. (Gesneriaceae) is a DT dicotyledonous herb. Its genomic sequences characteristics remain unknown...
2017: PeerJ
https://www.readbyqxmd.com/read/28630643/improved-classification-accuracy-of-powdery-mildew-infection-levels-of-wine-grapes-by-spatial-spectral-analysis-of-hyperspectral-images
#19
Uwe Knauer, Andrea Matros, Tijana Petrovic, Timothy Zanker, Eileen S Scott, Udo Seiffert
BACKGROUND: Hyperspectral imaging is an emerging means of assessing plant vitality, stress parameters, nutrition status, and diseases. Extraction of target values from the high-dimensional datasets either relies on pixel-wise processing of the full spectral information, appropriate selection of individual bands, or calculation of spectral indices. Limitations of such approaches are reduced classification accuracy, reduced robustness due to spatial variation of the spectral information across the surface of the objects measured as well as a loss of information intrinsic to band selection and use of spectral indices...
2017: Plant Methods
https://www.readbyqxmd.com/read/28630302/new-perspective-on-spring-vegetation-phenology-and-global-climate-change-based-on-tibetan-plateau-tree-ring-data
#20
Bao Yang, Minhui He, Vladimir Shishov, Ivan Tychkov, Eugene Vaganov, Sergio Rossi, Fredrik Charpentier Ljungqvist, Achim Bräuning, Jussi Grießinger
Phenological responses of vegetation to climate, in particular to the ongoing warming trend, have received much attention. However, divergent results from the analyses of remote sensing data have been obtained for the Tibetan Plateau (TP), the world's largest high-elevation region. This study provides a perspective on vegetation phenology shifts during 1960-2014, gained using an innovative approach based on a well-validated, process-based, tree-ring growth model that is independent of temporal changes in technical properties and image quality of remote sensing products...
June 19, 2017: Proceedings of the National Academy of Sciences of the United States of America
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