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https://www.readbyqxmd.com/read/27935411/climacteric-ripening-of-apple-fruit-is-regulated-by-transcriptional-circuits-stimulated-by-cross-talks-between-ethylene-and-auxin
#1
Nicola Busatto, Alice Tadiello, Livio Trainotti, Fabrizio Costa
Apple is a fleshy fruit distinguished by a climacteric type of ripening, since most of the relevant physiological changes are triggered and governed by the action of ethylene. After its production, this hormone is perceived by a series of receptors to regulate, through a signaling cascade, downstream ethylene related genes. The possibility to control the effect of ethylene opened new horizons to the improvement of the postharvest fruit quality. To this end, 1-methylcyclopropene (1-MCP), an ethylene antagonist, is routinely used to modulate the ripening progression increasing storage life...
December 9, 2016: Plant Signaling & Behavior
https://www.readbyqxmd.com/read/27935195/ultrahigh-molecular-weight-polyethylene-graphene-oxide-nanocomposites-wear-characterization-and-biological-response-to-wear-particles
#2
S Suñer, N Gowland, R Craven, R Joffe, N Emami, J L Tipper
In the field of total joint replacements, polymer nanocomposites are being investigated as alternatives to ultrahigh molecular weight polyethylene (UHMWPE) for acetabular cup bearings. The objective of this study was to investigate the wear performance and biocompatibility of UHMWPE/graphene oxide (GO) nanocomposites. This study revealed that low concentrations of GO nanoparticles (0.5 wt %) do not significantly alter the wear performance of UHMWPE. In contrast, the addition of higher concentrations (2 wt %) led to a significant reduction in wear...
December 9, 2016: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/27933989/old-apple-malus-domestica-l-borkh-varieties-with-hypoallergenic-properties-an-integrated-approach-for-studying-apple-allergenicity
#3
Mara Vegro, Giulia Eccher, Francesca Populin, Chiara Sorgato, Federica Savazzini, Giulia Pagliarani, Stefano Tartarini, Gabriella Pasini, Andrea Curioni, Andrea Antico, Alessandro Botton
Freshly consumed apples (Malus domestica L. Borkh) can cause allergic reactions because of the presence of four classes of allergens. Knowledge of the genetic factors affecting the allergenic potential of apples would provide important information for the selection of hypoallergenic genotypes, which can be combined with the adoption of new agronomical practices to produce fruits with a reduced amount of allergens. In the present research, a multiple analytical approach was adopted to characterize the allergenic potential of 24 apple varieties released at different ages (pre- and post-green revolution)...
December 7, 2016: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/27933813/-atomic-force-masking-induced-formation-of-effective-hot-spots-along-grain-boundaries-of-metal-thin-films
#4
Kwang Hyun Kim, Soo Sang Chae, Seunghun Jang, Won Jin Choi, Hyunju Chang, Jeong-O Lee, Tae Il Lee
We present an interesting phenomenon, "atomic force masking", which is the deposition of a few-nanometer-thick gold film on ultrathin low-molecular-weight (LMW) polydimethylsiloxane (PDMS) engineered on a polycrystalline gold thin film, and demonstrated the formation of hot spot based on SERS. The essential principle of this atomic force masking phenomenon is that an LMW PDMS layer on a single crystalline grain of gold thin film would repel gold atoms approaching this region during a second cycle of evaporation, whereas new nucleation and growth of gold atoms would occur on LMW PDMS deposited on grain boundary regions...
November 30, 2016: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/27933265/multidirectional-hybrid-algorithm-for-the-split-common-fixed-point-problem-and-application-to-the-split-common-null-point-problem
#5
Xia Li, Meifang Guo, Yongfu Su
In this article, a new multidirectional monotone hybrid iteration algorithm for finding a solution to the split common fixed point problem is presented for two countable families of quasi-nonexpansive mappings in Banach spaces. Strong convergence theorems are proved. The application of the result is to consider the split common null point problem of maximal monotone operators in Banach spaces. Strong convergence theorems for finding a solution of the split common null point problem are derived. This iteration algorithm can accelerate the convergence speed of iterative sequence...
2016: SpringerPlus
https://www.readbyqxmd.com/read/27932950/amyloid-precursor-proteins-are-dynamically-trafficked-and-processed-during-neuronal-development
#6
Jenna M Ramaker, Robert S Cargill, Tracy L Swanson, Hanil Quirindongo, Marlène Cassar, Doris Kretzschmar, Philip F Copenhaver
Proteolytic processing of the Amyloid Precursor Protein (APP) produces beta-amyloid (Aβ) peptide fragments that accumulate in Alzheimer's Disease (AD), but APP may also regulate multiple aspects of neuronal development, albeit via mechanisms that are not well understood. APP is a member of a family of transmembrane glycoproteins expressed by all higher organisms, including two mammalian orthologs (APLP1 and APLP2) that have complicated investigations into the specific activities of APP. By comparison, insects express only a single APP-related protein (APP-Like, or APPL) that contains the same protein interaction domains identified in APP...
2016: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/27928532/collagen-extracted-from-persian-gulf-squid-exhibits-anti-cytotoxic-properties-on-apple-pectic-treated-cells-assessment-in-an-in-vitro-bioassay-model
#7
Ladan Delphi, Houri Sepehri, Elaheh Motevaseli, Mohammad Reza Khorramizadeh
BACKGROUND: Collagen-based three-dimensional (3D) in vitro systems have been introduced to study the physiological states of cells. As a biomolecule, collagen is usually extracted from terrestrial animals whilst aquatic animals like squid contain large amounts of collagen. METHODS: In order to make effective use of marine organisms, we selected Persian Gulf squid in 2015 to extract the required collagen. Then, a 3D culture system based on the extracted collagen was applied to investigate cellular mechanisms in a native microenvironment...
August 2016: Iranian Journal of Public Health
https://www.readbyqxmd.com/read/27925384/co-micellized-pluronic-mixture-with-thermo-sensitivity-and-residence-stability-as-an-injectable-tissue-adhesion-barrier-hydrogel
#8
Se Heang Oh, Jun Goo Kang, Jin Ho Lee
Although the tissue adhesion which leads to various complications frequently occurs after surgery, the development of an ideal tissue adhesion barrier is still a challenge. In this study, a thermo-sensitive hydrogel, which can fulfill the essential requirements of tissue adhesion barrier (that is, ease of handling for surgeon, flowing down prevention after application, stable residence on the injury during wound healing, and no use of toxic additives), was developed using biocompatible polyethylene glycol-polypropylene glycol copolymers (Pluronic F127/F68/P123 mixture)...
December 7, 2016: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/27924670/safety-of-iphone-retinal-photography
#9
Sheng Chiong Hong, Giles Wynn-Williams, Graham Wilson
BACKGROUND: With the advancement in mobile technology, smartphone retinal photography is becoming a popular practice. However, there is limited information about the safety of the latest smartphones used for retinal photography. AIMS: This study aims to determine the photobiological risk of iPhone 6 and iPhone 6 plus when used in conjunction with a 20Diopter condensing lens for retinal photography. METHOD: iPhone 6 and iPhone 6 plus (Apple, Cupertino, CA) were used in this study...
December 7, 2016: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/27924269/importance-of-consensus-region-of-multiple-ligand-templates-in-a-virtual-screening-method
#10
Tatsuya Okuno, Koya Kato, Shintaro Minami, Tomoki P Terada, Masaki Sasai, George Chikenji
We discuss methods and ideas of virtual screening (VS) for drug discovery by examining the performance of VS-APPLE, a recently developed VS method, which extensively utilizes the tendency of single binding pockets to bind diversely different ligands, i.e. promiscuity of binding pockets. In VS-APPLE, multiple ligands bound to a pocket are spatially arranged by maximizing structural overlap of the protein while keeping their relative position and orientation with respect to the pocket surface, which are then combined into a multiple-ligand template for screening test compounds...
2016: Biophysics and Physicobiology
https://www.readbyqxmd.com/read/27921398/effects-of-rhizobacteria-paenibacillus-polymyxa-apec136-and-bacillus-subtilis-apec170-on-biocontrol-of-postharvest-pathogens-of-apple-fruits
#11
Young Soo Kim, Kotnala Balaraju, Yongho Jeon
In this study, plant growth-promoting rhizobacteria (PGPR) were evaluated as potential biocontrol agents against postharvest pathogens of apple fruits. In vitro bioassays revealed that, out of 30 isolates screened, isolates APEC136 and APEC170 had the most significant inhibitory effects against the mycelial growth of several fungal pathogens. Analysis of 16S ribosomal RNA (rRNA) sequences identified the two effective isolates as Paenibacillus polymyxa and Bacillus subtilis, respectively. The two strains showed greater growth in brain-heart infusion broth than in other growth media...
2016: Journal of Zhejiang University. Science. B
https://www.readbyqxmd.com/read/27920969/examining-the-effects-of-video-modeling-and-prompts-to-teach-activities-of-daily-living-skills
#12
Catarina Aldi, Alexandra Crigler, Kelly Kates-McElrath, Brian Long, Hillary Smith, Kim Rehak, Lisa Wilkinson
Video modeling has been shown to be effective in teaching a number of skills to learners diagnosed with autism spectrum disorders (ASD). In this study, we taught two young men diagnosed with ASD three different activities of daily living skills (ADLS) using point-of-view video modeling. Results indicated that both participants met criterion for all ADLS. Participants did not maintain mastery criterion at a 1-month follow-up, but did score above baseline at maintenance with and without video modeling. • Point-of-view video models may be an effective intervention to teach daily living skills...
December 2016: Behavior Analysis in Practice
https://www.readbyqxmd.com/read/27919735/quercetin-attenuates-high-fructose-feeding-induced-atherosclerosis-by-suppressing-inflammation-and-apoptosis-via-ros-regulated-pi3k-akt-signaling-pathway
#13
Xue-Li Lu, Cui-Hua Zhao, Xin-Liang Yao, Han Zhang
Quercetin is a dietary flavonoid compound extracted from various plants, such as apple and onions. Previous studies have revealed its anti-inflammatory, anti-cancer, antioxidant and anti-apoptotic activities. This study investigated the ability of quercetin to inhibit high fructose feeding- or LPS-induced atherosclerosis through regulating oxidative stress, apoptosis and inflammation response in vivo and in vitro experiments. 50 and 100mg/kg quercetin were used in our study, showing significant inhibitory role in high fructose-induced atherosclerosis via reducing reactive oxygen species (ROS) levels, Caspase-3 activation, inflammatory cytokines releasing, the number of terminal deoxynucleotidyl transferase-mediated dUTP nick end-labeling (TUNEL)-positive cells and collagen contents as well as modulating apoptosis- and inflammation-related proteins expression...
December 2, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27919669/manothermosonication-mts-treatment-of-apple-carrot-juice-blend-for-inactivation-of-escherichia-coli-0157-h7
#14
Ozan Kahraman, Hyoungill Lee, Wei Zhang, Hao Feng
This study was performed to evaluate the responses of Escherichia coli 0157:H7 inoculated in an apple-carrot blended juice to manothermosonication (MTS) treatments. The MTS treatments were conducted in a continuous-flow MTS system. The juice samples were exposed to ultrasound treatment at combinations of three temperatures (60, 50 and 40°C) and three pressure levels (100, 200, and 300kPa) for five residence times (15, 30, 45, 60, and 75s). The results showed that higher treatment temperature (i.e. 60°C) and hydrostatic pressure in the MTS system significantly enhanced the microbial reduction...
November 24, 2016: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/27918614/effects-of-juice-matrix-and-pasteurization-on-stability-of-black-currant-anthocyanins-during-storage
#15
Gary Dobson, Gordon J McDougall, Derek Stewart, Miguel Ángel Cubero, Reijo O Karjalainen
The effects of juice matrix and pasteurization on the stability of total phenols and especially total and individual anthocyanins were examined in black currant (BC) juice and mixtures with apple, persimmon, and peach juices at 4 °C and 20 °C. Total phenol content decreased in all juices at both temperatures but there was a trend to lower levels in unpasteurized over pasteurized juices. Differences in the decline of total anthocyanins between pasteurized and unpasteurized juices varied according to the juice type and the storage temperature...
December 5, 2016: Journal of Food Science
https://www.readbyqxmd.com/read/27918417/efficacy-of-nitric-oxide-fumigation-for-controlling-codling-moth-in-apples
#16
Yong-Biao Liu, Xiangbing Yang, Gregory Simmons
Nitric oxide (NO) fumigation under ultralow oxygen (ULO) conditions was studied for its efficacy in controlling codling moth and effects on postharvest quality of apples. NO fumigation was effective against eggs and larvae of different sizes on artificial diet in 48 h treatments. Small larvae were more susceptible to nitric oxide than other stages at 0.5% NO concentration. There were no significant differences among life stages at 1.0% to 2.0% NO concentrations. In 24 h treatments of eggs, 3.0% NO fumigation at 2 °C achieved 100% egg mortality...
December 2, 2016: Insects
https://www.readbyqxmd.com/read/27917839/characterization-and-1-57%C3%A2-%C3%A3-resolution-structure-of-the-key-fire-blight-phosphatase-amsi-from-erwinia-amylovora
#17
Marco Salomone-Stagni, Francesco Musiani, Stefano Benini
AmsI is a low-molecular-weight protein tyrosine phosphatase that regulates the production of amylovoran in the Gram-negative bacterium Erwinia amylovora, a specific pathogen of rosaceous plants such as apple, pear and quince. Amylovoran is an exopolysaccharide that is necessary for successful infection. In order to shed light on AmsI, its structure was solved at 1.57 Å resolution at the same pH as its highest measured activity (pH 5.5). In the active site, a water molecule, bridging between the catalytic Arg15 and the reaction-product analogue sulfate, might be representative of the water molecule attacking the phospho-cysteine intermediate in the second step of the reaction mechanism...
December 1, 2016: Acta Crystallographica. Section F, Structural Biology Communications
https://www.readbyqxmd.com/read/27917289/a-high-density-multi-parental-snp-genetic-map-on-apple-validates-a-new-mapping-approach-for-outcrossing-species
#18
Erica A Di Pierro, Luca Gianfranceschi, Mario Di Guardo, Herma Jj Koehorst-van Putten, Johannes W Kruisselbrink, Sara Longhi, Michela Troggio, Luca Bianco, Hélène Muranty, Giulia Pagliarani, Stefano Tartarini, Thomas Letschka, Lidia Lozano Luis, Larisa Garkava-Gustavsson, Diego Micheletti, Marco Cam Bink, Roeland E Voorrips, Ebrahimi Aziz, Riccardo Velasco, François Laurens, W Eric van de Weg
Quantitative trait loci (QTL) mapping approaches rely on the correct ordering of molecular markers along the chromosomes, which can be obtained from genetic linkage maps or a reference genome sequence. For apple (Malus domestica Borkh), the genome sequence v1 and v2 could not meet this need; therefore, a novel approach was devised to develop a dense genetic linkage map, providing the most reliable marker-loci order for the highest possible number of markers. The approach was based on four strategies: (i) the use of multiple full-sib families, (ii) the reduction of missing information through the use of HaploBlocks and alternative calling procedures for single-nucleotide polymorphism (SNP) markers, (iii) the construction of a single backcross-type data set including all families, and (iv) a two-step map generation procedure based on the sequential inclusion of markers...
2016: Horticulture Research
https://www.readbyqxmd.com/read/27913847/patulin-transformation-products-and-last-intermediates-in-its-biosynthetic-pathway-e-and-z-ascladiol-are-not-toxic-to-human-cells
#19
Joanna Tannous, Selma P Snini, Rhoda El Khoury, Cécile Canlet, Philippe Pinton, Yannick Lippi, Imourana Alassane-Kpembi, Thierry Gauthier, André El Khoury, Ali Atoui, Ting Zhou, Roger Lteif, Isabelle P Oswald, Olivier Puel
Patulin is the main mycotoxin contaminating apples. During the brewing of alcoholic beverages, this mycotoxin is degraded to ascladiol, which is also the last precursor of patulin. The present study aims (1) to characterize the last step of the patulin biosynthetic pathway and (2) to describe the toxicity of ascladiol. A patE deletion mutant was generated in Penicillium expansum. In contrast to the wild strain, this mutant does not produce patulin but accumulates high levels of E-ascladiol with few traces of Z-ascladiol...
December 2, 2016: Archives of Toxicology
https://www.readbyqxmd.com/read/27911881/low-energy-ne-ion-beam-induced-modifications-of-magnetic-properties-in-mnas-thin-films
#20
M Trassinelli, L Bernard Carlsson, S Cervera, M Eddrief, V H Etgens, E V Gafton, E Lacaze, E Lamour, A Lévy, S Macé, C Prigent, J-P Rozet, S Steydli, M Marangolo, D Vernhet
Investigations of the complex behavior of the magnetization of manganese arsenide thin films due to defects induced by irradiation of slow heavy ions are presented. In addition to the thermal hysteresis suppression already highlighted in Trassinelli et al (2014 Appl. Phys. Lett. 104 081906), we report here on new local magnetic features recorded by a magnetic force microscope at different temperatures close to the characteristic sample phase transition. Complementary measurements of the global magnetization in different conditions (applied magnetic field and temperatures) enable the film characterization to be completed...
December 2, 2016: Journal of Physics. Condensed Matter: An Institute of Physics Journal
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