keyword
MENU ▼
Read by QxMD icon Read
search

Glyphosate

keyword
https://www.readbyqxmd.com/read/27906609/glyphosate-adversely-affects-danio-rerio-males-acetylcholinesterase-modulation-and-oxidative-stress
#1
Fernanda Moreira Lopes, Sergiane Souza Caldas, Ednei Gilberto Primel, Carlos Eduardo da Rosa
It has been demonstrated that glyphosate-based herbicides are toxic to animals. In the present study, reactive oxygen species (ROS) generation, antioxidant capacity against peroxyl radicals (ACAP), and lipid peroxidation (LPO), as well as the activity and expression of the acetylcholinesterase (AChE) enzyme, were evaluated in Danio rerio males exposed to 5 or 10 mg/L of glyphosate for 24 and 96 h. An increase in ACAP in gills after 24 h was observed in the animals exposed to 5 mg/L of glyphosate. A decrease in LPO was observed in brain tissue of animals exposed to 10 mg/L after 24 h, while an increase was observed in muscle after 96 h...
December 1, 2016: Zebrafish
https://www.readbyqxmd.com/read/27889510/amine-functionalized-multi-arm-star-polymers-a-novel-platform-for-removing-glyphosate-from-aqueous-media
#2
Lianna Samuel, Ran Wang, Geraud Dubois, Robert Allen, Rudy Wojtecki, Young-Hye La
We describe a novel method for efficiently removing glyphosate from aqueous media via adsorption onto highly functionalized star-shaped polymeric particles. These particles have a polystyrene core with more than 35 attached methacrylate polymer arms, each containing a plurality of pendant amines (poly(dimethylamino ethyl methacrylate): PDMAEMA) that are partially protonated in water. Kinetic studies demonstrate that these star-polymers successfully remove up to 93% of glyphosate present in aqueous solution (feed concentration: 5 ppm), within 10 min contact time, outperforming activated carbon, which removed 33% after 20 min...
November 24, 2016: Chemosphere
https://www.readbyqxmd.com/read/27876225/glyphosate-and-ampa-distribution-in-wind-eroded-sediment-derived-from-loess-soil
#3
Célia P M Bento, Dirk Goossens, Mahrooz Rezaei, Michel Riksen, Hans G J Mol, Coen J Ritsema, Violette Geissen
Glyphosate is one of the most used herbicides in agricultural lands worldwide. Wind-eroded sediment and dust, as an environmental transport pathway of glyphosate and of its main metabolite aminomethylphosphonic acid (AMPA), can result in environmental- and human exposure far beyond the agricultural areas where it has been applied. Therefore, special attention is required to the airborne transport of glyphosate and AMPA. In this study, we investigated the behavior of glyphosate and AMPA in wind-eroded sediment by measuring their content in different size fractions (median diameters between 715 and 8 μm) of a loess soil, during a period of 28 days after glyphosate application...
November 18, 2016: Environmental Pollution
https://www.readbyqxmd.com/read/27863869/similarities-and-differences-in-occurrence-and-temporal-fluctuations-in-glyphosate-and-atrazine-in-small-midwestern-streams-usa-during-the-2013-growing-season
#4
Barbara J Mahler, Peter C Van Metre, Thomas E Burley, Keith A Loftin, Michael T Meyer, Lisa H Nowell
Glyphosate and atrazine are the most intensively used herbicides in the United States. Although there is abundant spatial and temporal information on atrazine occurrence at regional scales, there are far fewer data for glyphosate, and studies that compare the two herbicides are rare. We investigated temporal patterns in glyphosate and atrazine concentrations measured weekly during the 2013 growing season in 100 small streams in the Midwestern United States. Glyphosate was detected in 44% of samples (method reporting level 0...
November 15, 2016: Science of the Total Environment
https://www.readbyqxmd.com/read/27848110/changing-agricultural-practices-potential-consequences-to-aquatic-organisms
#5
Peter J Lasier, Matthew L Urich, Sayed M Hassan, Whitney N Jacobs, Robert B Bringolf, Kathleen M Owens
Agricultural practices pose threats to biotic diversity in freshwater systems with increasing use of glyphosate-based herbicides for weed control and animal waste for soil amendment becoming common in many regions. Over the past two decades, these particular agricultural trends have corresponded with marked declines in populations of fish and mussel species in the Upper Conasauga River watershed in Georgia/Tennessee, USA. To investigate the potential role of agriculture in the population declines, surface waters and sediments throughout the basin were tested for toxicity and analyzed for glyphosate, metals, nutrients, and steroid hormones...
December 0: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/27837178/global-research-production-in-glyphosate-intoxication-from-1978-to-2015-a-bibliometric-analysis
#6
S H Zyoud, W S Waring, S W Al-Jabi, W M Sweileh
BACKGROUND: Glyphosate (N-phosphonomethylglycine) has been used as a broad-spectrum herbicide that has been widely used in the agricultural industry and also available for home use. The main aim of this study is to present a general overview of glyphosate intoxication-related publications from its introducing since the early 1970s using bibliometric technique. METHODS: On June 23, 2016, a literature search of the Scopus database was performed. We then extracted and analyzed the data using well-established qualitative and quantitative bibliometric indices: Publication year, affiliation, document type, country name, subject category, journal name, publishing language, and collaboration and citation patterns...
November 11, 2016: Human & Experimental Toxicology
https://www.readbyqxmd.com/read/27836263/a-glyphosate-based-herbicide-induces-histomorphological-and-protein-expression-changes-in-the-liver-of-the-female-guppy-poecilia-reticulata
#7
Ana Paula Rezende Dos Santos, Thiago Lopes Rocha, Clayton Luiz Borges, Alexandre Melo Bailão, Célia Maria de Almeida Soares, Simone Maria Teixeira de Sabóia-Morais
Glyphosate-based herbicides (GBH) are among the most common herbicides found in aquatic systems, but limited data are available about their mode of action and hepatotoxicity in fish. This study investigated the hepatotoxicity induced by GBH in the guppy Poecilia reticulata using a histopathological assessment associated with a proteomic approach. Guppies were exposed to GBH for 24 h at 1.8 mg of glyphosate L(-1), corresponding to 50% of the LC50, 96 h. The results indicate that the GBH at 1.8 mg of glyphosate L(-1) induce the development of hepatic damage in P...
November 8, 2016: Chemosphere
https://www.readbyqxmd.com/read/27833808/non-target-effects-of-a-glyphosate-based-herbicide-on-common-toad-larvae-bufo-bufo-amphibia-and-associated-algae-are-altered-by-temperature
#8
Fabian Baier, Edith Gruber, Thomas Hein, Elisabeth Bondar-Kunze, Marina Ivanković, Axel Mentler, Carsten A Brühl, Bernhard Spangl, Johann G Zaller
BACKGROUND: Glyphosate-based herbicides are the most widely used pesticides in agriculture, horticulture, municipalities and private gardens that can potentially contaminate nearby water bodies inhabited by amphibians and algae. Moreover, the development and diversity of these aquatic organisms could also be affected by human-induced climate change that might lead to more periods with extreme temperatures. However, to what extent non-target effects of these herbicides on amphibians or algae are altered by varying temperature is not well known...
2016: PeerJ
https://www.readbyqxmd.com/read/27821305/micronuclei-and-other-nuclear-abnormalities-on-caiman-latirostris-broad-snouted-caiman-hatchlings-after-embryonic-exposure-to-different-pesticide-formulations
#9
E C López González, A Larriera, P A Siroski, G L Poletta
This study aimed to evaluate the embryotoxicity and genotoxicity of pesticide commercial formulations widely used in soybean crops through the Micronucleus (MN) test and other Nuclear Abnormalities (NAs) in erythrocytes of broad-snouted caiman (Caiman latirostris), exposed by topical application through the eggshell. Embryos were exposed (during all incubation: 70 days approximately) to sub-lethal concentrations of two glyphosate formulations PanzerGold® (PANZ) and Roundup® Full II (RU) (500, 750, 1000µg/egg); to the endosulfan (END) formulation Galgofan® and the cypermethrin (CYP) formulation Atanor® (1, 10, 100, and 1000µg/ egg)...
November 4, 2016: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/27798798/biology-and-management-of-two-important-conyza-weeds-a-global-review
#10
Ali Ahsan Bajwa, Sehrish Sadia, Hafiz Haider Ali, Khawar Jabran, Arslan Masood Peerzada, Bhagirath Singh Chauhan
Weed management is one of the prime concerns for sustainable crop production. Conyza bonariensis and Conyza canadensis are two of the most problematic, noxious, invasive and widespread weeds in modern-day agriculture. The biology, ecology and interference of C. bonariensis and C. canadensis have been reviewed here to highlight pragmatic management options. Both these species share a unique set of biological features, which enables them to invade and adapt a wide range of environmental conditions. Distinct reproductive biology and an efficient seed dispersal mechanism help these species to spread rapidly...
October 31, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27792531/physiological-stress-responses-in-amphibian-larvae-to-multiple-stressors-reveal-marked-anthropogenic-effects-even-below-lethal-levels
#11
Pablo Burraco, Ivan Gomez-Mestre
Natural and anthropogenic disturbances cause profound alterations in organisms, inducing physiological adjustments to avoid, reduce, or remedy the impact of disturbances. In vertebrates, the stress response is regulated via neuroendocrine pathways, including the hypothalamic-pituitary-interrenal axis that regulates the secretion of glucocorticoids. Glucocorticoids have cascading effects on multiple physiological pathways, affecting the metabolic rate, reactive oxygen species production, or immune system. Determining the extent to which natural and anthropogenic environmental factors induce stress responses in vertebrates is of great importance in ecology and conservation biology...
November 2016: Physiological and Biochemical Zoology: PBZ
https://www.readbyqxmd.com/read/27787705/occurrence-of-the-herbicide-glyphosate-and-its-metabolite-ampa-in-surface-waters-in-switzerland-determined-with-on-line-solid-phase-extraction-lc-ms-ms
#12
Thomas Poiger, Ignaz J Buerge, Astrid Bächli, Markus D Müller, Marianne E Balmer
Glyphosate is currently one of the most important herbicides worldwide. Its unique properties provide for a wide range of uses in agriculture but also in non-agricultural areas. At the same time, its zwitterionic nature prevents the inclusion in multi-residue analytical methods for environmental monitoring. Consequently, despite its extensive use, data on occurrence of glyphosate in the aquatic environment is still scarce. Based on existing methods, we developed a simplified procedure for the determination of glyphosate and its main metabolite aminomethylphosphonic acid (AMPA) in water samples using derivatization with fluorenylmethyl chloroformate FMOC-Cl, combined with on-line solid phase extraction and liquid chromatography-tandem mass spectrometry (LC-MS/MS) detection...
October 27, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27785717/effects-of-a-commonly-used-glyphosate-based-herbicide-formulation-on-early-developmental-stages-of-two-anuran-species
#13
Norman Wagner, Hendrik Müller, Bruno Viertel
Environmental contamination, especially due to the increasing use of pesticides, is suggested to be one out of six main reasons for the global amphibian decline. Adverse effects of glyphosate-based herbicides on amphibians have been already discussed in several studies with different conclusions, especially regarding sublethal effects at environmentally relevant concentrations. Therefore, we studied the acute toxic effects (mortality, growth, and morphological changes) of the commonly used glyphosate-based herbicide formulation Roundup® UltraMax on early aquatic developmental stages of two anuran species with different larval types (obligate vs...
October 26, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27782205/discrimination-of-transgenic-soybean-seeds-by-terahertz-spectroscopy
#14
Wei Liu, Changhong Liu, Feng Chen, Jianbo Yang, Lei Zheng
Discrimination of genetically modified organisms is increasingly demanded by legislation and consumers worldwide. The feasibility of a non-destructive discrimination of glyphosate-resistant and conventional soybean seeds and their hybrid descendants was examined by terahertz time-domain spectroscopy system combined with chemometrics. Principal component analysis (PCA), least squares-support vector machines (LS-SVM) and PCA-back propagation neural network (PCA-BPNN) models with the first and second derivative and standard normal variate (SNV) transformation pre-treatments were applied to classify soybean seeds based on genotype...
October 26, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27780120/mixtures-of-herbicides-and-metals-affect-the-redox-system-of-honey-bees
#15
Catherine Jumarie, Philippe Aras, Monique Boily
The increasing loss of bee colonies in many countries has prompted a surge of studies on the factors affecting bee health. In North America, main crops such as maize and soybean are cultivated with extensive use of pesticides that may affect non-target organisms such as bees. Also, biosolids, used as a soil amendment, represent additional sources of metals in agroecosystems; however, there is no information about how these metals could affect the bees. In previous studies we investigated the effects of environmentally relevant doses of herbicides and metals, each individually, on caged honey bees...
October 22, 2016: Chemosphere
https://www.readbyqxmd.com/read/27776380/sanist-optimization-of-a-technology-for-compound-identification-based-on-the-european-union-directive-with-applications-in-forensic-pharmaceutical-and-food-analyses
#16
Simone Cristoni, Guglielmo Dusi, Paolo Brambilla, Adriana Albini, Matteo Conti, Maura Brambilla, Antonino Bruno, Francesca Digaudio, Luca Ferlin, Valeria Tazzari, Silvia Mengozzi, Simone Barera, Carlos Salier, Tommaso Trenti, Marco Cantu, Luigi Rossi Bernardi, Douglas M Noonan
Electrospray Ionization (EI) and Collision Induced Dissociation tandem mass spectrometry (CID-MS/MS) are usually employed to obtain compound identification through a mass spectra match. Different algorithms have been developed for this purpose (for example the NIST match algorithm). These approaches compare the tandem mass spectra (MS/MS) of the unknown analyte with the MS/MS spectra of known compounds inserted in a database. The compounds are usually identified on the basis of spectral match value associated with a probability of recognition...
October 24, 2016: Journal of Mass Spectrometry: JMS
https://www.readbyqxmd.com/read/27775891/mechanisms-of-bond-cleavage-during-mn-oxide-and-uv-degradation-of-glyphosate-results-from-phosphate-oxygen-isotopes-and-molecular-simulations
#17
Deb P Jaisi, Hui Li, Adam F Wallace, Prajwal Paudel, Mingjing Sun, Avula Balakrishna, Bob N Lerch
Degradation of glyphosate in the presence of Mn oxide and UV light was analyzed using phosphate oxygen isotope ratios and density function theory (DFT). Preference of C-P or C-N bond cleavage was found to vary with changing glyphosate:Mn oxide ratios indicating the potential role of sorption-induced conformational changes on the composition of intermediate degradation products. Isotope data confirmed that one oxygen atom derived solely from water was incorporated into the released phosphate during glyphosate degradation and this might suggest similar nucleophilic substitution at P centers and C-P bond cleavage both in Mn oxide- and UV light-mediated degradation...
October 24, 2016: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/27771872/effects-of-glyphosate-at-environmentally-relevant-concentrations-on-the-growth-of-and-microcystin-production-by-microcystis-aeruginosa
#18
Quan Zhang, Hang Zhou, Zhe Li, Jianqiang Zhu, Cong Zhou, Meirong Zhao
The use of glyphosate, which is a well-known sterilant herbicide, has been growing rapidly because the area under the cultivation of genetically modified crops that are tolerant to this herbicide has increased. Glyphosate can enter into aquatic systems through many different ways. However, information on the potential risks of glyphosate at environmentally relevant levels to aquatic systems is still limited. In this study, we selected the cyanobacterium Microcystis aeruginosa FACHB-905 (M. aeruginosa) as a model organism to evaluate the effects of glyphosate at environmentally relevant concentrations on the former's growth and microcystin (MC) production...
December 0: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/27771755/evaluation-of-stage-dependent-genotoxic-effect-of-roundup-%C3%A2-glyphosate-on-caiman-latirostris-embryos
#19
Pamela Mariana Burella, Maria Fernanda Simoniello, Gisela Laura Poletta
The agricultural expansion over the past decades, along with the associated increase in the use of pesticides, represents a high risk for many wild species. Caiman latirostris is a South American caiman with many features that make it highly vulnerable to pesticide exposure. Considering previous finding on the genotoxicity of the glyphosate-based formulation Roundup(®) in this species, the aim of this study was to evaluate the possible stage-dependent effect of this compound on C. latirostris embryos through the Comet assay (CA), micronuclei (MN), and nuclear abnormalities (NA) tests...
October 22, 2016: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/27770349/control-of-cortaderia-selloana-with-a-glyphosate-based-herbicide-led-to-a-short-term-stimulation-of-soil-fungal-communities
#20
M Anza, L Epelde, U Artetxe, J M Becerril, C Garbisu
In the north of Spain, Cortaderia selloana plants have invaded ecosystems of high ecological value. Control of this species is carried out with the application of glyphosate-based formulations. The aim of this work was to determine, under microcosm conditions, the short-term (2 months) effects of the application of a glyphosate-based herbicide (Roundup®) on C. selloana rhizosphere microbial communities. To this purpose, before and after the application of Roundup®, several parameters that provide information on the biomass, activity and diversity of rhizosphere fungal and bacterial communities (enzyme activities, basal and substrate-induced respiration, potentially mineralizable nitrogen, nitrification potential rate, ergosterol content and community-level profiles with Biolog™ plates and ARISA) were determined...
December 0: Environmental Monitoring and Assessment
keyword
keyword
44458
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"