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https://www.readbyqxmd.com/read/28431185/the-effect-of-interspecific-variation-in-photosynthetic-plasticity-on-4-year-growth-rate-and-8-year-survival-of-understorey-tree-seedlings-in-response-to-gap-formations-in-a-cool-temperate-deciduous-forest
#1
Riichi Oguchi, Tsutom Hiura, Kouki Hikosaka
Gap formation increases the light intensity in the forest understorey. The growth responses of seedlings to the increase in light availability show interspecific variation, which is considered to promote biodiversity in forests. At the leaf level, some species increase their photosynthetic capacity in response to gap formation, whereas others do not. Here we address the question of whether the interspecific difference in the photosynthetic response results in the interspecific variation in the growth response...
April 19, 2017: Tree Physiology
https://www.readbyqxmd.com/read/28431039/genomic-data-for-78-chickens-from-14-populations
#2
Diyan Li, Tiandong Che, Binlong Chen, Shilin Tian, Xuming Zhou, Guolong Zhang, Miao Li, Uma Gaur, Yan Li, Majing Luo, Long Zhang, Zhongxian Xu, Xiaoling Zhao, Huadong Yin, Yan Wang, Long Jin, Qianzi Tang, Huailiang Xu, Mingyao Yang, Rongjia Zhou, Ruiqiang Li, Qing Zhu, Mingzhou Li
Background: Since the domestication of the red jungle fowls ( Gallus gallus ) (dating back to ∼10,000 B.P.) in Asia, domestic chickens ( Gallus gallus domesticus ) have been subjected to the combined effects of natural selection and human-driven artificial selection; this has resulted in marked phenotypic diversity in a number of traits, including behavior, body composition, egg production and skin color. Population genomic variations through diversifying selection have not been fully investigated...
April 18, 2017: GigaScience
https://www.readbyqxmd.com/read/28430522/impact-of-naturalistic-lighting-on-hospitalized-stroke-patients-in-a-rehabilitation-unit-design-and-measurement
#3
Anders West, Poul Jennum, Sofie Amalie Simonsen, Birgit Sander, Milena Pavlova, Helle K Iversen
INTRODUCTION AND RATIONALE: Stroke is a major cause of acquired cerebral disability among adults, frequently accompanied by depression, anxiety, cognitive impairment, disrupted sleep and fatigue. New ways of intervention to prevent these complications are therefore needed. The major circadian regulator, the suprachiasmatic nucleus, is mainly controlled by natural daylight, and the blue spectrum is considered the most powerful. During stroke rehabilitation, patients typically are mostly indoors and therefore not exposed to the natural daytime variation in light intensity...
April 21, 2017: Chronobiology International
https://www.readbyqxmd.com/read/28430272/molecular-rare-earth-metal-alumosilicates
#4
Raúl Huerta-Lavorie, Dana V Báez-Rodríguez, Jessica García-Ríos, Emiliano Martínez-Vollbert, Diego Martínez-Otero, Vojtech Jancik
The synthesis and stabilization of molecular four-coordinated lanthanide alumosilicates was achieved by the use of a highly encumbered alumosilicate ligand LAl(OH·thf)(μ-O)Si(OH)(OtBu)2 (1, L = HC{C(Me)N(2,6-iPr2C6H3)}2). Reactions between 1 and tris-cyclopentadienyl lanthanides (LnCp3; Ln = Ce, Nd, Sm, Gd, Tb, Dy, Y, Er) derived in the isolation of eight compounds (2-9) where the ligand is observed in three different bonding modes: adducts (2, 3), spirocyclic (4) or cyclic (5-9) coordination compounds. The observed reactivity can be related to the ionic radius of the lanthanide atom and the nature of the oxygen donor-atom from the hydroxide (Al-OH) or hydroxyl (Si-OH) moieties in 1...
April 21, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28429828/genomic-clustering-of-adaptive-loci-during-parallel-evolution-of-an-australian-wildflower
#5
Federico Roda, Greg M Walter, Rick Nipper, Daniel Ortiz-Barrientos
The buildup of the phenotypic differences that distinguish species has long intrigued biologists. These differences are often inherited as stable polymorphisms that allow the co-segregation of adaptive variation within species, and facilitate the differentiation of complex phenotypes between species. It has been suggested that the clustering of adaptive loci could facilitate this process but evidence is still scarce. Here we used QTL analysis to study the genetic basis of phenotypic differentiation between coastal populations of the Australian wildflower Senecio lautus...
April 21, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28429398/efficacy-of-passive-sampler-collection-for-atmospheric-no2-isotopes-under-simulated-environmental-conditions
#6
Justin G Coughlin, Zhongjie Yu, Emily M Elliott
RATIONALE: Nitrogen oxides or NOx (NOx  = NO + NO2 ) play an important role in air quality, atmospheric chemistry, and climate. The isotopic compositions of anthropogenic and natural NO2 sources are wide-ranging, and they can be used to constrain sources of ambient NO2 and associated atmospheric deposition of nitrogen compounds. While passive sample collection of NO2 isotopes has been used in field studies to determine NOx source influences on atmospheric deposition, this approach has not been evaluated for accuracy or precision under different environmental conditions...
April 20, 2017: Rapid Communications in Mass Spectrometry: RCM
https://www.readbyqxmd.com/read/28429244/fluctuating-asymmetry-of-meristic-traits-an-isofemale-line-analysis-in-an-invasive-drosophilid-zaprionus-indianus
#7
Lilian Madi-Ravazzi, Luis Fernando Segala, Vincent Debat, Jean R David
Metric (e.g., body size) and meristic (e.g., bristle number) traits are of general use in quantitative genetic studies, and the phenotypic variance is subdivided into a genetic and a non-genetic environmental component. The non-genetic variance may have two origins: a common garden effect between individuals and a developmental instability within the same individual. Developmental instability may be studied by considering the fluctuating asymmetry (FA) between the two sides of the body. The isofemale line technique is a convenient method for investigating the architecture of natural populations but has been rarely implemented for investigating FA...
April 20, 2017: Genetica
https://www.readbyqxmd.com/read/28429154/developing-elite-neurospora-crassa-strains-for-cellulosic-ethanol-production-using-fungal-breeding
#8
Joshua C Waters, Andrew Nixon, Morgan Dwyer, Justin C Biffinger, Kwangwon Lee
The demand for renewable and sustainable energy has generated considerable interest in the conversion of cellulosic biomass into liquid fuels such as ethanol using a filamentous fungus. While attempts have been made to study cellulose metabolism through the use of knock-out mutants, there have been no systematic effort to characterize natural variation for cellulose metabolism in ecotypes adapted to different habitats. Here, we characterized natural variation in saccharification of cellulose and fermentation in 73 ecotypes and 89 laboratory strains of the model fungus Neurospora crassa...
April 20, 2017: Journal of Industrial Microbiology & Biotechnology
https://www.readbyqxmd.com/read/28428844/stable-isotope-analyses-a-method-to-distinguish-intensively-farmed-from-wild-frogs
#9
Carolin Dittrich, Ulrich Struck, Mark-Oliver Rödel
Consumption of frog legs is increasing worldwide, with potentially dramatic effects for ecosystems. More and more functioning frog farms are reported to exist. However, due to the lack of reliable methods to distinguish farmed from wild-caught individuals, the origin of frogs in the international trade is often uncertain. Here, we present a new methodological approach to this problem. We investigated the isotopic composition of legally traded frog legs from suppliers in Vietnam and Indonesia. Muscle and bone tissue samples were examined for δ(15)N, δ(13)C, and δ(18)O stable isotope compositions, to elucidate the conditions under which the frogs grew up...
April 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28428819/lipid-production-and-molecular-dynamics-simulation-for-regulation-of-accd-gene-in-cyanobacteria-under-different-n-and-p-regimes
#10
Roshan Kumar, Koushik Biswas, Puneet Kumar Singh, Pankaj Kumar Singh, Sanniyasi Elumalai, Pratyoosh Shukla, Sunil Pabbi
BACKGROUND: Microalgae grown under different nutrient deficient conditions present a good source of natural lipids with applications for several types of biofuels. The expression of acetyl-CoA carboxylase gene can further provide an insight to the mechanisms leading to enhanced lipid production under such stresses. In this study, two nutrients viz. nitrogen and phosphorus were modulated to see its effect on lipid productivity in selected cyanobacteria and its correlation with Accase followed by molecular dynamics simulation...
2017: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/28428539/separating-decadal-global-water-cycle-variability-from-sea-level-rise
#11
B D Hamlington, J T Reager, M-H Lo, K B Karnauskas, R R Leben
Under a warming climate, amplification of the water cycle and changes in precipitation patterns over land are expected to occur, subsequently impacting the terrestrial water balance. On global scales, such changes in terrestrial water storage (TWS) will be reflected in the water contained in the ocean and can manifest as global sea level variations. Naturally occurring climate-driven TWS variability can temporarily obscure the long-term trend in sea level rise, in addition to modulating the impacts of sea level rise through natural periodic undulation in regional and global sea level...
April 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28428241/heralds-of-parallel-ms-data-independent-acquisition-surpassing-sequential-identification-of-data-dependent-acquisition-in-proteomics
#12
Roland Bruderer, Oliver Martin Bernhardt, Tejas Gandhi, Yue Xuan, Julia Sondermann, Manuela Schmidt, David Gomez-Varela, Lukas Reiter
Comprehensive, reproducible and precise analysis of large sample cohorts is one of the key objectives of quantitative proteomics. Here, we present an implementation of data-independent acquisition using its parallel acquisition nature that surpasses the serial limitation of data-dependent acquisition on a quadrupole ultra-high field Orbitrap mass spectrometer. In deep single shot data-independent acquisition, we quantified over 7,500 proteins of human cell lines and 9,000 proteins of mouse tissues, with fewer than 2...
April 20, 2017: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/28428140/automated-annotation-and-classification-of-bi-rads-assessment-from-radiology-reports
#13
Sergio M Castro, Eugene Tseytlin, Olga Medvedeva, Kevin Mitchell, Shyam Visweswaran, Tanja Bekhuis, Rebecca S Jacobson
The Breast Imaging Reporting and Data System (BI-RADS) was developed to reduce variation in the descriptions of findings. Manual analysis of breast radiology report data is challenging but is necessary for clinical and healthcare quality assurance activities. The objective of this study is to develop a natural language processing (NLP) system for automated BI-RADS categories extraction from breast radiology reports. We evaluated an existing rule-based NLP algorithm, and then we developed and evaluated our own method using a supervised machine learning approach...
April 17, 2017: Journal of Biomedical Informatics
https://www.readbyqxmd.com/read/28427772/seasonal-variations-of-aromatase-and-estrogen-receptors-expression-in-the-testis-of-free-ranging-sand-rats
#14
Rafik Menad, Souaâd Smaï, Xavier Bonnet, Thérèse Gernigon-Spychalowicz, Elara Moudilou, Farida Khammar, Jean-Marie Exbrayat
An increasing number of studies revealed the importance of estrogen in male reproduction. However, most research was conducted in laboratory rodents subjected to standardized environmental conditions. Therefore, seasonal regulations of estrogen pathways remain poorly understood under natural conditions. Using immunohistochemistry, the expression of several molecules involved in the functioning of testis (i.e. 17-β estradiol [E2], P450 aromatase, estrogen receptors ESR1, ESR2, and GPER1 [also known as GPR30]) were investigated in free-ranging fat sand rats, Psammomys obesus, during the breeding and resting seasons...
April 17, 2017: Acta Histochemica
https://www.readbyqxmd.com/read/28427530/phenolic-compounds-and-its-bioavailability-in-vitro-bioactive-compounds-or-health-promoters
#15
Isabel C F R Ferreira, Natália Martins, Lillian Barros
Botanical preparations present a widespread and secular history of use. In fact, natural matrices possess a rich pool of phytochemicals, with promising biological effects. Among them, phenolic compounds have revealed to confer very important attributes to improve the well-being and longevity of worldwide population. Numerous in vitro studies have been carried out evaluating the wide spectrum of bioactivities of phenolic compounds, including its health effects, but through in vivo experiments some of these previous results cannot be properly confirmed, and considerable variations are observed...
2017: Advances in Food and Nutrition Research
https://www.readbyqxmd.com/read/28427365/association-between-fc%C3%AE-receptor-iia-iiia-and-iiib-genetic-polymorphisms-and-susceptibility-to-severe-malaria-anemia-in-children-in-western-kenya
#16
Elly O Munde, Winnie A Okeyo, Evans Raballah, Samuel B Anyona, Tom Were, John M Ong'echa, Douglas J Perkins, Collins Ouma
BACKGROUND: Naturally-acquired immunity to Plasmodium falciparum malaria develops after several episodes of infection. Fc gamma receptors (FcγRs) bind to immunoglobulin G (IgG) antibodies and mediate phagocytosis of opsonized microbes, thereby, linking humoral and cellular immunity. FcγR polymorphisms influence binding affinity to IgGs and consequently, can influence clinical malaria outcomes. Specifically, variations in FcγRIIA -131Arg/His, FcγRIIIA-176F/V and FcγRIIIB-NA1/NA2 modulate immune responses through altered binding preferences to IgGs and immune complexes...
April 20, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28427327/analysis-of-transcriptome-data-reveals-multifactor-constraint-on-codon-usage-in-taenia-multiceps
#17
Xing Huang, Jing Xu, Lin Chen, Yu Wang, Xiaobin Gu, Xuerong Peng, Guangyou Yang
BACKGROUND: Codon usage bias (CUB) is an important evolutionary feature in genomes that has been widely observed in many organisms. However, the synonymous codon usage pattern in the genome of T. multiceps remains to be clarified. In this study, we analyzed the codon usage of T. multiceps based on the transcriptome data to reveal the constraint factors and to gain an improved understanding of the mechanisms that shape synonymous CUB. RESULTS: Analysis of a total of 8,620 annotated mRNA sequences from T...
April 20, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28426822/genomics-of-a-revived-breed-case-study-of-the-belgian-campine-cattle
#18
Liesbeth François, Katrien Wijnrocx, Frédéric G Colinet, Nicolas Gengler, Bettine Hulsegge, Jack J Windig, Nadine Buys, Steven Janssens
Through centuries of both natural and artificial selection, a variety of local cattle populations arose with highly specific phenotypes. However, the intensification and expansion of scale in animal production systems led to the predominance of a few highly productive cattle breeds. The loss of local populations is often considered irreversible and with them specific qualities and rare variants could be lost as well. Over these last years, the interest in these local breeds has increased again leading to increasing efforts to conserve these breeds or even revive lost populations, e...
2017: PloS One
https://www.readbyqxmd.com/read/28425615/the-natural-history-of-subjective-tinnitus-in-adults-a-systematic-review-and-meta-analysis-of-no-intervention-periods-in-controlled-trials
#19
REVIEW
John S Phillips, Don J McFerran, Deborah A Hall, Derek J Hoare
OBJECTIVES: Tinnitus is a prevalent condition, but little has been published regarding the natural history of the condition. One technique for evaluating the long-term progression of the disease is to examine what happens to participants in the no-intervention control arm of a clinical trial. The aim of this study was to examine no-intervention or waiting-list data reported in trials, in which participants on the active arm received any form of tinnitus intervention. DATA SOURCES: CINAHL, PsychINFO, EMBASE, ASSIA, PubMed, Web of Science, Science Direct, EBSCO Host, and Cochrane...
April 20, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28425026/photosynthetic-responses-to-temperature-across-leaf-canopy-ecosystem-scales-a-15-year-study-in-a-californian-oak-grass-savanna
#20
Siyan Ma, Jessica L Osuna, Joseph Verfaillie, Dennis D Baldocchi
Ecosystem CO2 fluxes measured with eddy-covariance techniques provide a new opportunity to retest functional responses of photosynthesis to abiotic factors at the ecosystem level, but examining the effects of one factor (e.g., temperature) on photosynthesis remains a challenge as other factors may confound under circumstances of natural experiments. In this study, we developed a data mining framework to analyze a set of ecosystem CO2 fluxes measured from three eddy-covariance towers, plus a suite of abiotic variables (e...
April 19, 2017: Photosynthesis Research
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