keyword
MENU ▼
Read by QxMD icon Read
search

Environmental enrichment

keyword
https://www.readbyqxmd.com/read/28735410/rhizosphere-sampling-protocols-for-microbiome-16s-18s-its-rrna-library-preparation-and-enrichment-for-the-isolation-of-drought-tolerance-promoting-microbes
#1
Venkatachalam Lakshmanan, Prasun Ray, Kelly D Craven
Natural plant microbiomes are abundant and have a remarkably robust composition, both as epiphytes on the plant surface and as endophytes within plant tissues. Microbes in the former "habitat" face limited nutrients and harsh environmental conditions, while those in the latter likely lead a more sheltered existence. The most populous and diverse of these microbiomes are associated with the zone around the plant roots, commonly referred to as the rhizosphere. A majority of recent studies characterize these plant-associated microbiomes by community profiling of bacteria and fungi, using amplicon-based marker genes and next-generation sequencing (NGS)...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28734606/thiol-yne-click-synthesis-of-boronic-acid-functionalized-silica-nanoparticle-graphene-oxide-composites-for-highly-selective-enrichment-of-glycoproteins
#2
Jingai Yang, Xiwen He, Langxing Chen, Yukui Zhang
In this work, a facile novel strategy is developed for the preparation of 4-mercapto-phenylboronic acid functionalized silica nanoparticle-graphene oxide composite (GO@MPBA) via thiol-yne click reaction. The morphology, structure and composition of the resulting GO@MPBA was characterized by transmission electron microscopy, X-ray powder diffraction, Fourier transform infrared spectroscopy, Fourier transform Raman spectroscopy, Thermogravimetric analysis and X-ray photoelectron spectrometry. GO@MPBA exhibited the high binding capacity towards glycoproteins such as ovalbumin (1288...
July 13, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28734216/releasing-of-hexabromocyclododecanes-from-expanded-polystyrenes-in-seawater-field-and-laboratory-experiments
#3
Manviri Rani, Won Joon Shim, Mi Jang, Gi Myung Han, Sang Hee Hong
Expanded polystyrene (EPS) is a major component of marine debris globally. Recently, hazardous hexabromocyclododecanes (HBCDDs) were detected in EPS buoys used for aquaculture farming. Subsequently, enrichment of HBCDDs was found in nearby marine sediments and mussels growing on EPS buoys. It was suspected that EPS buoys and their debris might be sources of HBCDDs. To confirm this, the release of HBCDDs from EPS spherules detached from a buoy to seawater was investigated under field (open sea surface and closed outdoor chambers with sun exposure and in the dark) and laboratory (particle-size) conditions...
July 11, 2017: Chemosphere
https://www.readbyqxmd.com/read/28729075/effects-of-environmental-enrichment-during-abstinence-in-morphine-dependent-parents-on-anxiety-depressive-like-behaviors-and-voluntary-morphine-consumption-in-rat-offspring
#4
Alireza Pooriamehr, Parviz Sabahi, Hossein Miladi-Gorji
Chronic morphine exposure during puberty increased morphine-induced rewarding effects and sensitization in the next generation. Given the well-known beneficial effects of environmental enrichment on the severity of physical and psychological dependence on morphine, we examined effects of enriched environment during morphine abstinence in morphine dependent parental rats before mating on the anxiety and depressive-like behaviors, and voluntary morphine consumption in their offspring. Paternal and/or maternal rats were injected with bi-daily doses (10mg/kg, 12h intervals) of morphine for 14days followed by rearing in a standard environment (SE) or enriched environment (EE) during 30days of morphine abstinence before mating...
July 17, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28728387/effects-of-environmental-enrichment-on-behaviour-physiology-and-performance-of-pigs-a-review
#5
Mbusiseni Vusumuzi Mkwanazi, Cyprial Ndumiso Ncobela, Arnold Tapera Kanengoni, Michael Chimonyo
The aim of this paper is to critically analyse and synthesise existing knowledge concerning the use of environmental enrichment and its effect on behaviour, physiology and performance of pigs housed in intensive production systems. The objective is also to provide clarity as to what constitute successful enrichment and recommend on when and how enrichment should be used. Environmental enrichment is usually understood as an attempt to improve animal welfare and to lesser extent, performance. Common enrichment objects used are straw bedding, suspended rope and wood shavings, toys, rubber tubing, coloured plastic keys, table tennis balls, chains and strings...
June 26, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28724227/carbon-and-nitrogen-allocation-strategy-in-posidonia-oceanica-is-altered-by-seawater-acidification
#6
Andrea Scartazza, Stefano Moscatello, Olga Gavrichkova, Maria Cristina Buia, Marco Lauteri, Alberto Battistelli, Maurizio Lorenti, Samantha Laird Garrard, Carlo Calfapietra, Enrico Brugnoli
Rising atmospheric CO2 causes ocean acidification that represents one of the major ecological threats for marine biota. We tested the hypothesis that long-term exposure to increased CO2 level and acidification in a natural CO2 vent system alters carbon (C) and nitrogen (N) metabolism in Posidonia oceanica L. (Delile), affecting its resilience, or capability to restore the physiological homeostasis, and the nutritional quality of organic matter available for grazers. Seawater acidification decreased the C to N ratio in P...
July 14, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28724225/seasonal-variations-in-the-occurrence-of-perfluoroalkyl-substances-in-water-sediment-and-fish-samples-from-ebro-delta-catalonia-spain
#7
Emanuela Pignotti, Gemma Casas, Marta Llorca, Anil Tellbüscher, David Almeida, Enrico Dinelli, Marinella Farré, Damià Barceló
The main objective of this study was to assess the concentration levels and the seasonal variations of 13 poly- and perfluoroalkyl substances (PFASs) in different compartments (water, sediments and fish) of the Ebro Delta (NE Spain) and surrounding coastal areas. Perfluorooctanoic acid (PFOA) was the most frequently detected compound in waters and sediments. Perfluorocarboxylic acids (PFCAs) were the compounds found at the highest concentrations in water samples. On the other hand, sediments were more enriched in perfluorooctanesulfonate (PFOS) (range<1...
July 14, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28722769/promoter-iv-bdnf-deficiency-disturbs-cholinergic-gene-expression-of-chrna5-chrm2-and-chrm5-effects-of-drug-and-environmental-treatments
#8
Kazuko Sakata, Abigail E Overacre
Brain-derived neurotrophic factor (BDNF) promotes maturation of cholinergic neurons. However, how activity-dependent BDNF expression affects specific cholinergic gene expression remains unclear. This study addressed this question by determining mRNA levels of 22 acetylcholine receptor subunits, the choline transporter (CHT), and the choline acetyltransferase (ChAT) in mice deficient in activity-dependent BDNF via promoter IV (KIV) and control wild-type mice. Quantitative RT-PCR revealed significant reductions in nicotinic acetylcholine receptor alpha 5 (CHRNA5) in the frontal cortex and hippocampus and M5 muscarinic acetylcholine receptor (CHRM5) in the hippocampus, but significant increases in M2 muscarinic acetylcholine receptor (CHRM2) in the frontal cortex of KIV mice compared to wild-type mice...
July 19, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28721211/microbial-metal-resistance-and-metabolism-across-dynamic-landscapes-high-throughput-environmental-microbiology
#9
REVIEW
Hans Carlson, Adam Deutschbauer, John Coates
Multidimensional gradients of inorganic compounds influence microbial activity in diverse pristine and anthropogenically perturbed environments. Here, we suggest that high-throughput cultivation and genetics can be systematically applied to generate quantitative models linking gene function, microbial community activity, and geochemical parameters. Metal resistance determinants represent a uniquely universal set of parameters around which to study and evaluate microbial fitness because they represent a record of the environment in which all microbial life evolved...
2017: F1000Research
https://www.readbyqxmd.com/read/28720730/drought-stress-results-in-a-compartment-specific-restructuring-of-the-rice-root-associated-microbiomes
#10
Christian Santos-Medellín, Joseph Edwards, Zachary Liechty, Bao Nguyen, Venkatesan Sundaresan
Plant roots support complex microbial communities that can influence plant growth, nutrition, and health. While extensive characterizations of the composition and spatial compartmentalization of these communities have been performed in different plant species, there is relatively little known about the impact of abiotic stresses on the root microbiota. Here, we have used rice as a model to explore the responses of root microbiomes to drought stress. Using four distinct genotypes, grown in soils from three different fields, we tracked the drought-induced changes in microbial composition in the rhizosphere (the soil immediately surrounding the root), the endosphere (the root interior), and unplanted soils...
July 18, 2017: MBio
https://www.readbyqxmd.com/read/28719877/functional-genomic-assessment-of-2-2-bis-bromomethyl-1-3-propanediol-induced-cytotoxicity-in-a-single-gene-knockout-library-of-e-%C3%A2-coli
#11
Miao Guan, Xiaowei Zhang
Functional gene fingerprinting of chemicals could be used to understand the direct gene-chemical interaction in the process of toxification from a genome-wide scale. 2, 2-bis (bromomethyl)-1, 3-propanediol (BMP) is a brominated flame retardant with widespread production but with very limited toxicological data. Here the cytotoxicity of BMP was assessed by Escherichia coli (E. coli) functional genome-wide knockout mutants screening and the underlying molecular mechanism was investigated. The median inhibition concentration (IC50) of BMP was 1...
July 9, 2017: Chemosphere
https://www.readbyqxmd.com/read/28719191/relationships-between-dissolved-organic-matter-composition-and-photochemistry-in-lakes-of-diverse-trophic-status
#12
Andrew Chapin Maizel, Jing Li, Christina K Remucal
The North Temperate Lakes-Long Term Ecological Research site includes seven lakes in northern Wisconsin that vary in hydrology, trophic status, and landscape position. We examine the molecular composition of dissolved organic matter (DOM) within these lakes using Fourier transform-ion cyclotron resonance mass spectrometry (FT-ICR MS) and quantify DOM photochemical activity using probe compounds. Correlations between the relative intensity of individual molecular formulas and reactive species production demonstrate the influence of DOM composition on photochemistry...
July 18, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28718825/olive-mill-waste-enhances-%C3%AE-glucan-content-in-the-edible-mushroom-pleurotus-eryngii
#13
Sharon Avni, Nirit Ezove, Hilla Hanani, Itamar Yadid, Michal Karpovsky, Hilla Hayby, Ofer Gover, Yitzhak Hadar, Betty Schwartz, Ofer Danay
Mushroom polysaccharides are edible polymers that have numerous reported biological functions; the most common effects are attributed to β-glucans. In recent years, it became apparent that the less abundant α-glucans also possess potent effects in various health conditions. Here we explore several Pleurotus species for their total, β and α-glucan content. Pleurotus eryngii was found to have the highest total glucan concentrations and the highest α-glucans proportion. We also found that the stalks (stipe) of the fruit body contained higher glucan content then the caps (pileus)...
July 18, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28718026/solid-phase-extraction-of-multi-class-pharmaceuticals-from-environmental-water-samples-onto-modified-multi-walled-carbon-nanotubes-followed-by-lc-ms-ms
#14
Bojana Lalović, Tatjana Đurkić, Marija Vukčević, Ivona Janković-Častvan, Ana Kalijadis, Zoran Laušević, Mila Laušević
In this paper, pristine and chemically treated multi-walled carbon nanotubes (MWCNTs) were employed as solid-phase extraction sorbents for the isolation and enrichment of multi-class pharmaceuticals from the surface water and groundwater, prior to liquid chromatography-tandem mass spectrometry analysis. Thirteen pharmaceuticals that belong to different therapeutical classes (erythromycin, azithromycin, sulfamethoxazole, diazepam, lorazepam, carbamazepine, metoprolol, bisoprolol, enalapril, cilazapril, simvastatin, clopidogrel, diclofenac) and two metabolites of metamizole (4-acetylaminoantipyrine and 4-formylaminoantipyrine) were selected for this study...
July 17, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28718018/the-environmental-legacy-of-historic-pb-zn-ag-au-mining-in-river-basins-of-the-southern-edge-of-the-massif-central-france
#15
Françoise Elbaz-Poulichet, Eléonore Resongles, Chrystelle Bancon-Montigny, Sophie Delpoux, Rémi Freydier, Corinne Casiot
The main rivers (Aude, Orb, Herault) that discharge into the Gulf of Lions and the west bank tributaries of the Rhone River including the Gardon have former non-ferrous metal mines in their upper drainage basin. Using unpublished data and data from the literature, this study provides an integrated overview of the contamination of water and sediment along the continent-sea continuum and of its impacts on the biota and on human health. In the upper part of these basins, water and stream sediments are enriched in metal(-loids) compared to median European concentrations...
July 17, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28717024/inorganic-carbon-availability-in-benthic-diatom-communities-photosynthesis-and-migration
#16
REVIEW
Jorge Marques da Silva, Sónia Cruz, Paulo Cartaxana
Diatom-dominated microphytobenthos (MPB) is the main primary producer of many intertidal and shallow subtidal environments, being therefore of critical importance to estuarine and coastal food webs. Owing to tidal cycles, intertidal MPB diatoms are subjected to environmental conditions far more variable than the ones experienced by pelagic diatoms (e.g. light, temperature, salinity, desiccation and nutrient availability). Nevertheless, benthic diatoms evolved adaptation mechanisms to these harsh conditions, including the capacity to move within steep physical and chemical gradients, allowing them to perform photosynthesis efficiently...
September 5, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28716048/transcriptome-analysis-uncovers-arabidopsis-f-box-stress-induced-1-as-a-regulator-of-jasmonic-acid-and-abscisic-acid-stress-gene-expression
#17
Lauren E Gonzalez, Kristen Keller, Karen X Chan, Megan M Gessel, Bryan C Thines
BACKGROUND: The ubiquitin 26S proteasome system (UPS) selectively degrades cellular proteins, which results in physiological changes to eukaryotic cells. F-box proteins are substrate adaptors within the UPS and are responsible for the diversity of potential protein targets. Plant genomes are enriched in F-box genes, but the vast majority of these have unknown roles. This work investigated the Arabidopsis F-box gene F-BOX STRESS INDUCED 1 (FBS1) for its effects on gene expression in order elucidate its previously unknown biological function...
July 17, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28715772/stability-of-single-dispersed-silver-nanoparticles-in-natural-and-synthetic-freshwaters-effects-of-dissolved-oxygen
#18
Xiaoyan Zou, Penghui Li, Jie Lou, Xiaoyan Fu, Hongwu Zhang
Silver nanoparticles (AgNPs) are increasingly used in various commercial products. This increased use raises ecological concerns because of the large release of AgNPs into the environment. Once released, the local water chemistry has the potential to influence the environmental fates and behaviors of AgNPs. The impacts of dissolved oxygen and natural organic matter (NOM) on the dissolution and stability of AgNPs were investigated in synthetic and natural freshwaters for 7 days. In synthetic freshwater, the aggregation of AgNPs occurred due to the compression of the electric double layer, accompanied by the dissolution of AgNPs...
July 14, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28714573/assessment-of-the-dna-damaging-potential-of-environmental-chemicals-using-a-quantitative-high-throughput-screening-approach-to-measure-p53-activation
#19
Kristine L Witt, Jui-Hua Hsieh, Stephanie L Smith-Roe, Menghang Xia, Ruili Huang, Jinghua Zhao, Scott S Auerbach, Junguk Hur, Raymond R Tice
Genotoxicity potential is a critical component of any comprehensive toxicological profile. Compounds that induce DNA or chromosomal damage often activate p53, a transcription factor essential to cell cycle regulation. Thus, within the US Tox21 Program, we screened a library of ∼10,000 (∼8,300 unique) environmental compounds and drugs for activation of the p53-signaling pathway using a quantitative high-throughput screening assay employing HCT-116 cells (p53(+/+) ) containing a stably integrated β-lactamase reporter gene under control of the p53 response element (p53RE)...
July 17, 2017: Environmental and Molecular Mutagenesis
https://www.readbyqxmd.com/read/28712080/elemental-and-isotopic-determination-of-lead-pb-in-particulate-matter-in-the-brazilian-city-of-goi%C3%A3-nia-go-using-icp-ms-technique
#20
Hendryk Gemeiner, Thiago de Araujo Dourado, Everton Tiago Sulato, Juliana Aparecida Galhardi, Ana Carla Fernandes Gomes, Eduardo de Almeida, Amauri Antonio Menegário, Didier Gastmans, Chang Hung Kiang
The toxic metal lead (Pb) can be harmful to human health in various manners, but is also considered as a distinguished tracer of environmental pollution since the relative abundance of its four stable isotopes with the atomic masses of 204, 206, 207, and 208 varies with the emission source. This study is focused on the Pb concentrations and isotope ratios in the particulate matter of the Brazilian city of Goiânia in order to determine the main Pb emission sources. Particulate matter samples were collected on clean Teflon filters during rainy and dry season in 2014 in the center of Goiânia city near main roads with a high traffic volume...
July 15, 2017: Environmental Science and Pollution Research International
keyword
keyword
22368
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"