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https://www.readbyqxmd.com/read/28542901/mechanisms-and-implications-of-a-type-iv-functional-response-for-short-term-intake-rate-of-dry-matter-in-large-mammalian-herbivores
#1
J C Mezzalira, O J F Bonnet, P C de F Carvalho, L Fonseca, C Bremm, C C Mezzalira, E A Laca
1.The functional response (i.e. the relationship between consumers' intake rate and resource density) is central in plant-herbivore interactions. Its shape and the biological processes leading to it have significant implications for both foraging theory and ecology of grazing systems. 2.A type IV functional response (i.e. dome-shaped relationship) of short-term intake rate of dry matter (intake while grazing) has rarely been reported for large herbivores and the conditions that can lead to it are poorly understood...
May 19, 2017: Journal of Animal Ecology
https://www.readbyqxmd.com/read/28527803/using-brown-midrib-6-dwarf-forage-sorghum-silage-and-fall-grown-oat-silage-in-lactating-dairy-cow-rations
#2
M T Harper, J Oh, F Giallongo, J C Lopes, G W Roth, A N Hristov
Double cropping and increasing crop diversity could improve dairy farm economic and environmental sustainability. In this experiment, corn silage was partially replaced with 2 alternative forages, brown midrib-6 brachytic dwarf forage sorghum (Sorghum bicolor) or fall-grown oat (Avena sativa) silage, in the diet of lactating dairy cows. We investigated the effect on dry matter (DM) intake, milk yield (MY), milk components and fatty acid profile, apparent total-tract nutrient digestibility, N utilization, enteric methane emissions, and income over feed cost...
May 17, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28523965/safety-evaluation-of-an-oat-grain-alkaloid-gramine-by-genotoxicity-assays
#3
Manash Pratim Pathak, Rudragoud S Policegoudra, Danswrang Goyary, Aparoop Das, Santa Mandal, Srijita Chakraborti, Nilutpal Sharma Bora, Johirul Islam, Pompy Patowary, P Srinivas Raju, Pronobesh Chattopadhyay
Gramine is a natural indole alkaloid that has been isolated from different raw plants occurring mainly in Avena sativa, etc. The study was aimed to investigate the possible in vitro antioxidant, in vitro mutagenic, in vitro antimutagenic, and in vivo genotoxic activity of gramine using ferric reducing ability of plasma (FRAP) assay, Metal chelating, Ames bacterial reverse mutation test, and the mouse bone marrow micronucleus assay as well as chromosomal aberration. Four concentrations of gramine viz. 250, 500, 1000, and 2000 μg/mL were evaluated for its antioxidant activity in FRAP Assay and Metal Chelating Test...
May 19, 2017: Drug and Chemical Toxicology
https://www.readbyqxmd.com/read/28512383/effects-of-cover-crops-on-pratylenchus-penetrans-and-the-nematode-community-in-carrot-production
#4
Zane J Grabau, Zin Thu Zar Maung, D Corey Noyes, Dean G Baas, Benjamin P Werling, Daniel C Brainard, Haddish Melakeberhan
Cover cropping is a common practice in U.S. Midwest carrot production for soil conservation, and may affect soil ecology and plant-parasitic nematodes-to which carrots are very susceptible. This study assessed the impact of cover crops-oats (Avena sativa), radish (Raphanus sativus) cv. Defender, rape (Brassica napus) cv. Dwarf Essex, and a mixture of oats and radish-on plant-parasitic nematodes and soil ecology based on the nematode community in Michigan carrot production systems. Research was conducted at two field sites where cover crops were grown in Fall 2014 preceding Summer 2015 carrot production...
March 2017: Journal of Nematology
https://www.readbyqxmd.com/read/28502647/an-accurate-specific-sensitive-high-throughput-method-based-on-a-microsphere-immunoassay-for-multiplex-detection-of-three-viruses-and-bacterial-fruit-blotch-bacterium-in-cucurbits
#5
Ratthaphol Charlermroj, Manlika Makornwattana, Orawan Himananto, Channarong Seepiban, Sudtida Phuengwas, Nuchnard Warin, Oraprapai Gajanandana, Nitsara Karoonuthaisiri
To employ a microsphere immunoassay (MIA) to simultaneously detect multiple plant pathogens (potyviruses, Watermelon silver mottle virus, Melon yellow spot virus, and Acidovorax avenae subsp. citrulli) in actual plant samples, several factors need to be optimized and rigorously validated. Here, a simple extraction method using a single extraction buffer was successfully selected to detect the four pathogens in various cucurbit samples (cucumber, cantaloupe, melon, and watermelon). The extraction method and assay performance were validated with inoculated and field cucurbit samples...
May 11, 2017: Journal of Virological Methods
https://www.readbyqxmd.com/read/28494649/herbicidal-activity-of-pure-compound-isolated-from-rhizosphere-inhabiting-aspergillus-flavus
#6
Saeed Ullah Khattak, Ghosia Lutfullah, Zafar Iqbal, Irshad Ur Rehman, Jamshaid Ahmad, Abid Ali Khan
In the quest for bioactive natural products of fungal origin, Aspergillus flavus was isolated from rhizosphere of Mentha piperita using Potato Dextrose Agar (PDA) and Czapec Yeast Broth (CYB) nutrient media for metabolites production. In total, three different metabolites were purified using HPLC/LCMS and the structures were established using 500 Varian NMR experiments. Further the isolated metabolites in different concentrations (10, 100, 1000 μg/mL) were tested for herbicidal activity using Completely Randomized design (CRD) against the seeds of Silybum marianum and Avena fatua which are major threats to wheat crop in Pakistan...
May 11, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28485049/intensive-herbicide-use-has-selected-for-constitutively-elevated-levels-of-stress-responsive-mrnas-and-proteins-in-multiple-herbicide-resistant-avena-fatua-l
#7
Barbara K Keith, Erin E Burns, Brian Bothner, Charles C Carey, Aurélien J Mazurie, Jonathan K Hilmer, Sezgi Biyiklioglu, Hikmet Budak, William E Dyer
BACKGROUND: Intensive use of herbicides has led to the evolution two multiple herbicide-resistant (MHR) Avena fatua (wild oat) populations in Montana that are resistant to members of all selective herbicide families available for A. fatua control in U.S. small grain crops. We used transcriptome and proteome surveys to compare constitutive changes in MHR and herbicide susceptible (HS) plants associated with non-target site resistance (NTSR). RESULTS: Compared to HS plants, MHR plants contained constitutively elevated levels of differentially expressed genes (DEGs) with functions in xenobiotic catabolism, stress response, redox maintenance, and transcriptional regulation that are similar to abiotic-stress tolerant phenotypes...
May 9, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28475913/salinity-affects-metabolomic-profiles-of-different-trophic-levels-in-a-food-chain
#8
Kyong-Hee Nam, Young-Joong Kim, Ye Seul Moon, In-Soon Pack, Chang-Gi Kim
Salinization is one of the most important abiotic stressors in an ecosystem. To examine how exposing a host plant to excess salt affects the consequent performance and metabolism of insects in a food chain, we determined the life history traits and the metabolite profiles in rice (Oryza sativa), the herbivore Sitobion avenae, and its predator Harmonia axyridis. When compared with performance under normal (non-stressed) conditions, exposing plants to 50mM NaCl significantly delayed the timing of development for S...
May 2, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28471491/solution-blow-spinning-of-food-grade-gelatin-nanofibers
#9
Fei Liu, Roberto J Avena-Bustillos, Cristina Bilbao-Sainz, Rachelle Woods, Bor-Sen Chiou, Delilah Wood, Tina Williams, Wallace Yokoyama, Gregory M Glenn, Tara H McHugh, Fang Zhong
The primary advantage of nanofibers over larger diameter fibers is the larger surface area to volume ratio. This study evaluated solution blow spinning (SBS) processing conditions for obtaining food-grade gelatin nanofibers from mammalian and fishery byproducts, such as pork skin gelatins (PGs) and high molecular weight fish skin gelatin (HMWFG). HMWFG had a highest intact collagen structure compared to PGs. PGs with different Bloom values, solution viscosities, and surface tensions were compared with HMWFG for their ability to produce nanofibers through SBS...
May 4, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/28448637/45s-rdna-external-transcribed-spacer-organization-reveals-new-phylogenetic-relationships-in-avena-genus
#10
Joana Rodrigues, Wanda Viegas, Manuela Silva
The genus Avena comprises four distinct genomes organized in diploid (AA or CC), tetraploid (AABB or AACC) and hexaploid species (AACCDD), constituting an interesting model for phylogenetic analysis. The aim of this work was to characterize 45S rDNA intergenic spacer (IGS) variability in distinct species representative of Avena genome diversity-A. strigosa (AA), A. ventricosa (CvCv), A. eriantha (CpCp), A. barbata (AABB), A. murphyi (AACC), A. sativa (AACCDD) and A. sterilis (AACCDD) through the assessment of the 5' external transcribed spacer (5'-ETS), a promising IGS region for phylogenetic studies poorly studied in Avena genus...
2017: PloS One
https://www.readbyqxmd.com/read/28443946/the-production-of-knowledge-and-the-strategies-to-incorporate-results-into-the-practice-of-nursing
#11
EDITORIAL
Magdalena José Avena, Dulce Aparecida Barbosa
No abstract text is available yet for this article.
April 13, 2017: Revista Gaúcha de Enfermagem
https://www.readbyqxmd.com/read/28429582/obesity-and-addiction-can-a-complication-of-surgery-help-us-understand-the-connection
#12
REVIEW
V Ivezaj, L E Stoeckel, N M Avena, S C Benoit, A Conason, J F Davis, A N Gearhardt, R Goldman, J E Mitchell, C N Ochner, K K Saules, K J Steffen, E Stice, S Sogg
Obesity is a multifactorial, chronic disease that has proven difficult to treat. An increased understanding of aetiological mechanisms is critical to the development of more effective obesity prevention and treatment strategies. A growing body of empirical evidence has demonstrated parallels between obesity, overeating and substance abuse, including shared behavioural, psychological and neurophysiological factors implicated in the excessive intake of both food and substances of abuse. Several different lines of research have recently emerged that hold the potential to shed light on the connection between obesity, food reward and addiction, with studies examining changes in alcohol use/misuse after weight loss surgery providing a particularly interesting perspective on these interrelationships...
April 21, 2017: Obesity Reviews: An Official Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28412349/light-induced-protein-degradation-in-human-derived-cells
#13
Wansheng Sun, Wenyao Zhang, Chao Zhang, Miaowei Mao, Yuzheng Zhao, Xianjun Chen, Yi Yang
Controlling protein degradation can be a valuable tool for posttranslational regulation of protein abundance to study complex biological systems. In the present study, we designed a light-switchable degron consisting of a light oxygen voltage (LOV) domain of Avena sativa phototropin 1 (AsLOV2) and a C-terminal degron. Our results showed that the light-switchable degron could be used for rapid and specific induction of protein degradation in HEK293 cells by light in a proteasome-dependent manner. Further studies showed that the light-switchable degron could also be utilized to mediate the degradation of secreted Gaussia princeps luciferase (GLuc), demonstrating the adaptability of the light-switchable degron in different types of protein...
April 12, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28406246/unravelling-mycorrhiza-induced-wheat-susceptibility-to-the-english-grain-aphid-sitobion-avenae
#14
Amma L Simon, Peter A D Wellham, Gudbjorg I Aradottir, Alan C Gange
Arbuscular mycorrhizal (AM) fungi are root symbionts that can increase or decrease aphid growth rates and reproduction, but the reason by which this happens is unknown. To investigate the underlying mechanisms of this interaction, we examined the effect of AM fungi on the English Grain aphid (Sitobion avenae) development, reproduction, attraction, settlement and feeding behaviour on two naturally susceptible varieties Triticum aestivum (L.) variety Solstice and T. monococcum MDR037, and two naturally resistant lines, T...
April 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28322022/the-effect-of-landscape-complexity-and-microclimate-on-the-thermal-tolerance-of-a-pest-insect
#15
Lucy Alford, Kévin Tougeron, Jean-Sébastien Pierre, Françoise Burel, Joan van Baaren
Landscape changes are known to exacerbate the impacts of climate change. As such, understanding the combined effect of climate and landscape on agro-ecosystems is vital if we are to maintain the function of agro-ecosystems. The present study aimed to elucidate the effects of agricultural landscape complexity on the microclimate and thermal tolerance of an aphid pest to better understand how landscape and climate may interact to affect the thermal tolerance of pest species within the context of global climate change...
March 21, 2017: Insect Science
https://www.readbyqxmd.com/read/28303034/searching-for-wheat-resistance-to-aphids-and-wheat-bulb-fly-in-the-historical-watkins-and-gediflux-wheat-collections
#16
G I Aradottir, J L Martin, S J Clark, J A Pickett, L E Smart
Insect pests can reduce wheat yield by direct feeding and transmission of plant viruses. Here we report results from laboratory and field phenotyping studies on a wide range of wheat, including landraces from the Watkins collection deriving from before the green revolution, more modern cultivars from the Gediflux collection (north-western Europe) and modern UK Elite varieties, for resistance to the bird cherry-oat aphid, Rhopalosiphum padi (Homoptera: Aphididae) and the English grain aphid, Sitobion avenae (Homoptera: Aphididae)...
March 2017: Annals of Applied Biology
https://www.readbyqxmd.com/read/28298700/extraction-chemical-characterization-and-antioxidant-activity-of-litchi-chinensis-sonn-and-avena-sativa-l-seeds-extracts-obtained-from-pressurized-n-butane
#17
Marshall Paliga, Zuleica Novello, Rogério M Dallago, Jaqueline Scapinello, Jacir Dal Magro, Marco Di Luccio, Marcus V Tres, J Vladimir Oliveira
The extraction of litchi (Litchi chinensis Sonn.) and oat (Avena sativa L.) seeds were investigated using n-butane as pressurized solvent by evaluating the effect of pressure in the range of 7-100 bar and temperature from 25 to 70 °C on the extract yield and chemical composition together with the antioxidant activity of the extracts obtained. It was experimentally observed extraction yields for both seeds up to ~3.5 wt%, with a total phenolic content around 126.4 mg GAE/100 g of extract, and an antioxidant activity up to 78...
March 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28294144/corrigendum-unraveling-the-evolutionary-dynamics-of-ancient-and-recent-polyploidization-events-in-avena-poaceae
#18
Qing Liu, Lei Lin, Xiangying Zhou, Paul M Peterson, Jun Wen
No abstract text is available yet for this article.
March 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28291827/neighbour-presence-not-identity-influences-root-and-shoot-allocation-in-pea
#19
Cory E Jacob, Eric Tozzi, Christian J Willenborg
Competition is a key feature that structures the composition of plant communities. A growing body of evidence is showing that the presence of neighbours, especially belowground neighbours, induces varied morphological responses in plants. However, in many species, it is not known whether neighbour identity also influences plant morphological responses such as biomass allocation patterns. To assess plant response to above- and belowground neighbour presence and identity, we conducted a greenhouse experiment consisting of conspecific (pea; Pisum sativum L...
2017: PloS One
https://www.readbyqxmd.com/read/28289537/comparative-analysis-of-pre-and-post-parasitic-transcriptomes-and-mining-pioneer-effectors-of-heterodera-avenae
#20
Dan Yang, Changlong Chen, Qian Liu, Heng Jian
BACKGROUND: The cereal cyst nematode (CCN, Heterodera avenae) is a devastating pathogen of wheat and barley crops in many countries. We aimed to prioritize genetic and molecular targets for H. avenae control via the powerful and integrative bioinformatics platform. RESULTS: Here, we sequenced mRNA isolated from Chinese H. avenae at pre-parasitic (consisting of egg, J1 and hatched-J2) stages and post-parasitic (consisting of parasitic-J2, J3, J4 and adults) stages...
2017: Cell & Bioscience
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