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https://www.readbyqxmd.com/read/29150764/projections-for-the-changes-in-growing-season-length-of-tree-ring-formation-on-the-tibetan-plateau-based-on-cmip5-model-simulations
#1
Minhui He, Bao Yang, Vladimir Shishov, Sergio Rossi, Achim Bräuning, Fredrik Charpentier Ljungqvist, Jussi Grießinger
The response of the growing season to the ongoing global warming has gained considerable attention. In particular, how and to which extent the growing season will change during this century is essential information for the Tibetan Plateau, where the observed warming trend has exceeded the global mean. In this study, the 1960-2014 mean length of the tree-ring growing season (LOS) on the Tibetan Plateau was derived from results of the Vaganov-Shashkin oscilloscope tree growth model, based on 20 composite study sites and more than 3000 trees...
November 17, 2017: International Journal of Biometeorology
https://www.readbyqxmd.com/read/29150763/heat-stress-in-cows-at-pasture-and-benefit-of-shade-in-a-temperate-climate-region
#2
Isabelle Veissier, Eva Van Laer, Rupert Palme, Christel P H Moons, Bart Ampe, Bart Sonck, Stéphane Andanson, Frank A M Tuyttens
Under temperate climates, cattle are often at pasture in summer and are not necessarily provided with shade. We aimed at evaluating in a temperate region (Belgium) to what extent cattle may suffer from heat stress (measured through body temperature, respiration rate and panting score, cortisol or its metabolites in milk, and feces on hot days) and at assessing the potential benefits of shade. During the summer of 2012, 20 cows were kept on pasture without access to shade. During the summer of 2011, ten cows had access to shade (young trees with shade cloth hung between them), whereas ten cows had no access...
November 17, 2017: International Journal of Biometeorology
https://www.readbyqxmd.com/read/29150717/genetic-diversity-and-phylogenetic-study-of-the-chinese-gelao-ethnic-minority-via-23-y-str-loci
#3
Pengyu Chen, Yanyan Han, Guanglin He, Haibo Luo, Tianzhen Gao, Feng Song, Dengfu Wan, Jian Yu, Yiping Hou
Haplotype diversity for 23 Y chromosomal short tandem repeat (Y-STR) loci included in the PowerPlex(®) Y23 System was analyzed in the Chinese Gelao minority group of 234 unrelated males living in Daozhen Gelao-Miao Autonomous County in Guizhou Province, southwest China. A total of 216 different haplotypes were detected, of which 199 haplotypes were unique. The overall haplotype diversity (HD) and discrimination capacity (DC) were 0.9996 and 0.9231, respectively. The gene diversity (GD) ranged from 0.4159 (DYS438) to 0...
November 17, 2017: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/29150693/a-collection-of-genetically-engineered-populus-trees-reveals-wood-biomass-traits-that-predict-glucose-yield-from-enzymatic-hydrolysis
#4
Sacha Escamez, Madhavi Latha Gandla, Marta Derba-Maceluch, Sven-Olof Lundqvist, Ewa J Mellerowicz, Leif J Jönsson, Hannele Tuominen
Wood represents a promising source of sugars to produce bio-based renewables, including biofuels. However, breaking down lignocellulose requires costly pretreatments because lignocellulose is recalcitrant to enzymatic saccharification. Increasing saccharification potential would greatly contribute to make wood a competitive alternative to petroleum, but this requires improving wood properties. To identify wood biomass traits associated with saccharification, we analyzed a total of 65 traits related to wood chemistry, anatomy and structure, biomass production and saccharification in 40 genetically engineered Populus tree lines...
November 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29150613/a-study-of-the-ground-attachment-process-in-natural-lightning-with-emphasis-on-its-breakthrough-phase
#5
M D Tran, V A Rakov
Synchronized high-speed (124 or 210 kiloframes per second) video images and wideband electromagnetic field records of the attachment process were obtained for 4 negative strokes in natural lightning at the Lightning Observatory in Gainesville, Florida. The majority of imaged upward connecting leaders (UCLs) and upward unconnected leaders, inferred to be mostly initiated from trees, exhibited a pulsating behavior (brightening/fading cycles). UCLs, whose maximum extent ranged from 11 to 25 m, propagated in virgin air at speeds ranging from 1...
November 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29150355/contribution-of-nitric-oxide-synthase-from-coagulase-negative-staphylococci-to-the-development-of-red-myoglobin-derivatives
#6
Geoffrey Ras, Xavier Bailly, Jean-Paul Chacornac, Véronique Zuliani, Patrick Derkx, Tim M Seibert, Régine Talon, Sabine Leroy
As part of the microbial community of meat or as starter cultures, coagulase-negative staphylococci (CNS) serve several essential technological purposes in meat products, such as color development through the reduction of nitrate to nitrite. As the safety of nitrite as an additive has been questioned, we explored the potential of CNS to develop red myoglobin derivatives such as oxymyoglobin and nitrosomyoglobin. Nitrosoheme was extracted to evaluate NO production. This production could be due to a nitric oxide synthase (NOS) activity...
November 13, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/29150322/sex-ratios-of-the-tick-ixodes-arboricola-are-strongly-female-biased-but-there-are-no-indications-of-sex-distorting-bacteria
#7
A Raoul Van Oosten, Olivier Duron, Dieter J A Heylen
Studies on sex ratio are of fundamental importance for understanding the biology of populations and biological control of pests and pathogens. In most Ixodes tick species, only females feed in the adult stage and, hence, contribute to pathogen transmission. The tree-hole tick Ixodes arboricola infests cavity-nesting birds and has limited dispersal possibilities. It plays an important role in the maintenance of zoonotic disease cycles. Here, we quantified the sex ratio of 718 adult I. arboricola ticks obtained from a laboratory stock at nine distinct periods (cohorts) from 2008 to 2015...
November 11, 2017: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/29150189/uranium-mobility-across-annual-growth-rings-in-three-deciduous-tree-species
#8
Kelly C McHugh, Elisabeth Widom, Henry B Spitz, Gregory C Wiles, Sam E Glover
Black walnut (Juglans nigra), slippery elm (Ulmus rubra), and white ash (Fraxinus americana) trees were evaluated as potential archives of past uranium (U) contamination. Like other metals, U mobility in annual growth rings of trees is dependent on the tree species. Uranium concentrations and isotopic compositions (masses 234, 235, 236, and 238) were analyzed by thermal ionization mass spectrometry to test the efficacy of using tree rings to retroactively monitor U pollution from the FFMPC, a U purification facility operating from 1951 to 1989...
November 14, 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/29149822/olive-leaf-extracts-act-as-modulators-of-the-human-immune-response
#9
Thea Magrone, Anna Spagnoletta, Rosaria Salvatore, Manrico Magrone, Francesco Dentamaro, Matteo Antonio Russo, Graziana Difonzo, Carmine Summo, Francesco Caponio, Emilio Jirillo
BACKGROUND: Olive tree leaves have been used in the Mediterranean area as traditional medicine in virtue of their healthy effects. Olive leaf extracts (OLEs) contain higher amounts of polyphenols than those detected in the extra virgin olive oil and fruit. Several lines of evidence support the cardioprotective, anti-oxidant and anti-inflammatory activities exerted by OLEs. METHODS: Peripheral blood mononuclear cells (PBMCs) from twenty-five healthy donors were cultured in the presence of 3 μg of two OLE extracts, extract A (resuspended in water) and extract B (resuspended in 70% ethanol)...
November 15, 2017: Endocrine, Metabolic & Immune Disorders Drug Targets
https://www.readbyqxmd.com/read/29149813/structural-analysis-of-cd59-of-chinese-tree-shrew-a-new-reference-molecule-for-human-immune-system-specific-cd59-drug-discovery
#10
Subhamay Panda, Leena Kumari, Santamay Panda
BACKGROUND: Chinese tree shrews (Tupaia belangeri chinensis) bear several characteristics that are considered to be very crucial for utilizing in animal experimental models in biomedical research. Subsequent to the identification of key aspects and signaling pathways in nervous and immune systems, it is revealed that tree shrews acquires shared common as well as unique characteristics, and hence offers a genetic basis for employing this animal as a prospective model for biomedical research...
November 17, 2017: Current Drug Discovery Technologies
https://www.readbyqxmd.com/read/29149684/combining-benford-s-law-and-machine-learning-to-detect-money-laundering-an-actual-spanish-court-case
#11
Elena Badal-Valero, José A Alvarez-Jareño, Jose M Pavía
OBJECTIVES: This paper is based on the analysis of the database of operations from a macro-case on money laundering orchestrated between a core company and a group of its suppliers, 26 of which had already been identified by the police as fraudulent companies. In the face of a well-founded suspicion that more companies have perpetrated criminal acts and in order to make better use of what are very limited police resources, we aim to construct a tool to detect money laundering criminals...
November 11, 2017: Forensic Science International
https://www.readbyqxmd.com/read/29149645/xylella-fastidiosa-induces-differential-expression-of-lignification-related-genes-and-lignin-accumulation-in-tolerant-olive-trees-cv-leccino
#12
Erika Sabella, Andrea Luvisi, Alessio Aprile, Carmine Negro, Marzia Vergine, Francesca Nicolì, Antonio Miceli, Luigi De Bellis
Recently, Xylella fastidiosa was reported in Italy, associated with the "Olive Quick Decline Syndrome". The cv. Leccino exhibits an evident tolerance with a slow disease progression compared with the other cultivars. Between the mechanisms proposed to explain the putative tolerance of some hosts to X. fastidiosa diseases, lignin deposition plays an important role. Analysis of phenolic compounds in healthy and infected Leccino and Cellina di Nardò leaves showed, in the two cultivars, a reduction of hydroxytyrosol glucoside (usually associated with drought and cold stress) and, only in Leccino, an increase of quinic acid, precursor of lignin...
November 10, 2017: Journal of Plant Physiology
https://www.readbyqxmd.com/read/29149421/kribbella-podocarpi-sp-nov-isolated-from-the-leaves-of-a-yellowwood-tree-podocarpus-latifolius
#13
Sarah M Curtis, Iulia Norton, Gareth J Everest, Paul R Meyers
An endophytic actinobacterial strain was isolated from a yellowwood tree growing on the slope of Devil's Peak, Cape Town, South Africa. Analysis of the 16S rRNA gene showed that the strain belongs to the genus Kribbella. Phylogenetic analyses using the 16S rRNA gene and multilocus sequence analysis using the concatenated gene sequences of the gyrB, rpoB, relA, recA and atpD genes showed that strain YPL1(T) is closely related to the type strains of Kribbella karoonensis and Kribbella shirazensis. DDH experiments showed that strain YPL1(T) is a distinct genomic species from its close phylogenetic relative, K...
November 17, 2017: Antonie Van Leeuwenhoek
https://www.readbyqxmd.com/read/29149300/the-effect-of-non-reversibility-on-inferring-rooted-phylogenies
#14
Svetlana Cherlin, Sarah E Heaps, Tom M W Nye, Richard J Boys, Tom A Williams, T Martin Embley
Most phylogenetic models assume that the evolutionary process is stationary and reversible. In addition to being biologically improbable, these assumptions also impair inference by generating models under which the likelihood does not depend on the position of the root. Consequently, the root of the tree cannot be inferred as part of the analysis. Yet identifying the root position is a key component of phylogenetic inference because it provides a point of reference for polarising ancestor/descendant relationships and therefore interpreting the tree...
November 15, 2017: Molecular Biology and Evolution
https://www.readbyqxmd.com/read/29149296/comparative-transcriptomics-of-five-high-altitude-vertebrates-and-their-low-altitude-relatives
#15
Qianzi Tang, Yiren Gu, Xuming Zhou, Long Jin, Jiuqiang Guan, Rui Liu, Jing Li, Kereng Long, Shilin Tian, Tiandong Che, Silu Hu, Yan Liang, Xuemei Yang, Xuan Tao, Zhijun Zhong, Guosong Wang, Xiaohui Chen, Diyan Li, Jideng Ma, Xun Wang, Miaomiao Mai, An'an Jiang, Xiaolin Luo, Xuebin Lv, Vadim N Gladyshev, Xuewei Li, Mingzhou Li
Background: Species living at high altitude are subject to strong selective pressures due to inhospitable environments (e.g., hypoxia, low temperature, high solar radiation, and lack of biological production), making these species valuable models for comparative analyses of local adaptation. Studies that examined high-altitude adaptation identified a vast array of rapidly evolving genes that characterize the dramatic phenotypic changes in high-altitude animals. However, how high-altitude environment shapes gene expression programs remains largely unknown...
November 15, 2017: GigaScience
https://www.readbyqxmd.com/read/29149270/aniseed-2017-extending-the-integrated-ascidian-database-to-the-exploration-and-evolutionary-comparison-of-genome-scale-datasets
#16
Matija Brozovic, Christelle Dantec, Justine Dardaillon, Delphine Dauga, Emmanuel Faure, Mathieu Gineste, Alexandra Louis, Magali Naville, Kazuhiro R Nitta, Jacques Piette, Wendy Reeves, Céline Scornavacca, Paul Simion, Renaud Vincentelli, Maelle Bellec, Sameh Ben Aicha, Marie Fagotto, Marion Guéroult-Bellone, Maximilian Haeussler, Edwin Jacox, Elijah K Lowe, Mickael Mendez, Alexis Roberge, Alberto Stolfi, Rui Yokomori, C Titus Brown, Christian Cambillau, Lionel Christiaen, Frédéric Delsuc, Emmanuel Douzery, Rémi Dumollard, Takehiro Kusakabe, Kenta Nakai, Hiroki Nishida, Yutaka Satou, Billie Swalla, Michael Veeman, Jean-Nicolas Volff, Patrick Lemaire
ANISEED (www.aniseed.cnrs.fr) is the main model organism database for tunicates, the sister-group of vertebrates. This release gives access to annotated genomes, gene expression patterns, and anatomical descriptions for nine ascidian species. It provides increased integration with external molecular and taxonomy databases, better support for epigenomics datasets, in particular RNA-seq, ChIP-seq and SELEX-seq, and features novel interactive interfaces for existing and novel datatypes. In particular, the cross-species navigation and comparison is enhanced through a novel taxonomy section describing each represented species and through the implementation of interactive phylogenetic gene trees for 60% of tunicate genes...
November 15, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/29149062/polyphenolics-from-albizia-harveyi-exhibit-antioxidant-activities-and-counteract-oxidative-damage-and-ultra-structural-changes-of-cryopreserved-bull-semen
#17
Mansour Sobeh, Soha A Hassan, Mohamed A El Raey, Wael A Khalil, Mahmoud A E Hassan, Michael Wink
Albizia harveyi is a tropical deciduous tree, found across South and Eastern Africa and widely used in traditional medicine. The leaf extract ameliorated the damaging effects of the frozen-thawing process in cryopreserved bull semen. In a dose-dependent pattern, sperm motility, viability, and membrane integrity were improved compared to the untreated control. Furthermore, the extract increased the percentage of viable sperm cells and reduced the percentages of early apoptotic and apoptotic sperm cells as well as the damage in sperm ultra-structure...
November 17, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29148974/revealing-the-distribution-of-transmembrane-currents-along-the-dendritic-tree-of-a-neuron-from-extracellular-recordings
#18
Dorottya Cserpán, Domokos Meszéna, Lucia Wittner, Kinga Tóth, István Ulbert, Zoltán Somogyvári, Daniel K Wojcik
Revealing the current source distribution along the neuronal membrane is a key step on the way to understanding neural computations, however, the experimental and theoretical tools to achieve sufficient spatiotemporal resolution for the estimation remain to be established. Here we address this problem using extracellularly recorded potentials with arbitrarily distributed electrodes for a neuron of known morphology. We use simulations of models with varying complexity to validate the proposed method and to give recommendations for experimental applications...
November 17, 2017: ELife
https://www.readbyqxmd.com/read/29148365/tenacibaculum-insulae-sp-nov-isolated-from-a-tidal-flat
#19
Sooyeon Park, Jeehyun Choi, Su Jung Choi, Jung-Hoon Yoon
A Gram-stain-negative, aerobic, non-motile, non-spore-forming bacterial strain, designated JDTF-31(T), was isolated from a tidal flat in Jindo, a South Korean island. Strain JDTF-31(T) grew optimally at 25 °C and in the presence of 2.0 % (w/v) NaCl. The neighbour-joining phylogenetic tree based on 16S rRNA gene sequences revealed that strain JDTF-31(T) fell within the cluster comprising the type strains of Tenacibaculum species, joining the type strain of Tenacibaculum soleae. The novel strain exhibited 16S rRNA gene sequence similarity values of 98...
November 17, 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/29148363/hymenobacter-defluvii-sp-nov-isolated-from-wastewater-of-an-acidic-water-neutralization-facility
#20
Joo Won Kang, Seon Choi, Han Na Choe, Chi Nam Seong
A non-motile, pink-coloured and rod-shaped bacterium, designated strain POA9(T), was isolated from a wastewater treatment facility, Republic of Korea. Cells were Gram-reaction-negative, aerobic, catalase-positive and oxidase-negative. The major fatty acids were C16 : 1ω5c, iso-C15 : 0, summed feature 3 (C16 : 1ω6c and/or C16 : 1ω7c) and anteiso-C15 : 0. The strain contained MK-7 as the only isoprenoid quinone, phosphatidylethanolamine as the major polar lipid and sym-homospermidine as the major polyamine...
November 17, 2017: International Journal of Systematic and Evolutionary Microbiology
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