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https://www.readbyqxmd.com/read/29346623/a-large-scale-field-study-of-bacterial-communities-in-cereal-aphid-populations-across-morocco
#1
Samir Fakhour, Jérôme Ambroise, François Renoz, Vincent Foray, Jean-Luc Gala, Thierry Hance
Insects are frequently associated with bacteria that can have significant ecological and evolutionary impacts on their hosts. To date, few studies have examined the influence of environmental factors to microbiome composition of aphids. The current work assessed the diversity of bacterial communities of five cereal aphid species (Sitobion avenae, Rhopalosiphum padi, R. maidis, Sipha maydis and Diuraphis noxia) collected across Morocco and covering a wide range of environmental conditions. We aimed to test whether symbiont combinations are host or environment specific...
January 16, 2018: FEMS Microbiology Ecology
https://www.readbyqxmd.com/read/29323436/molecular-characterization-and-gene-silencing-of-laccase-1-in-the-grain-aphid-sitobion-avenae
#2
Yong Zhang, Jia Fan, Frédéric Francis, Julian Chen
Laccase 1 (Lac1), a polyphenol oxidase, has been proposed to be involved in insect iron metabolism and immunity responses. However, little information is available on the roles of Lac 1 in insect-plant interactions. The grain aphid Sitobion avenae is one of the most destructive pests of cereal, directly drawing phloem sap and transmitting viruses. In the present study, we first cloned the open reading frame (ORF) of Lac 1 from S. avenae, and the putative protein sequence was predicted to have a carboxyl-terminal transmembrane domain...
January 11, 2018: Archives of Insect Biochemistry and Physiology
https://www.readbyqxmd.com/read/29299527/a-single-amino-acid-change-in-the-marburg-virus-glycoprotein-arises-during-serial-cell-culture-passages-and-attenuates-the-virus-in-a-macaque-model-of-disease
#3
Kendra J Alfson, Laura E Avena, Jenny Delgado, Michael W Beadles, Jean L Patterson, Ricardo Carrion, Anthony Griffiths
Marburg virus (MARV) causes disease with high case fatality rates, and there are no approved vaccines or therapies. Licensing of MARV countermeasures will likely require approval via the FDA's Animal Efficacy Rule, which requires well-characterized animal models that recapitulate human disease. This includes selection of the virus used for exposure and ensuring that it retains the properties of the original isolate. The consequences of amplification of MARV for challenge studies are unknown. Here, we serially passaged and characterized MARV through 13 passes from the original isolate...
January 2018: MSphere
https://www.readbyqxmd.com/read/29287375/enzymatic-action-mechanism-of-phenolic-mobilization-in-oats-avena-sativa-l-during-solid-state-fermentation-with-monascus-anka
#4
Qi Bei, Gong Chen, Fangju Lu, Sheng Wu, Zhenqiang Wu
This work aims to investigate the effects of carbohydrate-hydrolysing enzymes on the release of phenolics in oat fermentation with Monascus anka. There were good correlations between phenolic content and α-amylase, xylanase and FPase activities. A high level of α-amylase activity (141.07 U/g) was observed, while xylanase (2.40 U/g), total cellulase (0.52 U/g) and β-glucosidase activities (0.028 U/g) were relatively low in the fermentation system. The phenolic content of oat powder treated with crude enzyme from fermented oats significantly increased, especially that of the ferulic acid in the insoluble fraction and the vanillic acid in the soluble fraction...
April 15, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29261152/increasing-antioxidant-activity-and-protein-digestibility-in-phaseolus-vulgaris-and-avena-sativa-by-fermentation-with-the-pleurotus-ostreatus-fungus
#5
Edith Espinosa-Páez, Ma Guadalupe Alanis-Guzmán, Carlos E Hernández-Luna, Juan G Báez-González, Carlos A Amaya-Guerra, Ana M Andrés-Grau
The aim of the research was to determine the impact of fermentation with Pleurotus ostreatus on kidney beans, black beans, and oats. The results indicate that the fungus has a positive effect on the substrates when compared to the controls. The antioxidant activity (39.5% on kidney beans and 225% on oats in relation to the controls) and content of total polyphenols (kidney beans three times higher regarding the controls) increased significantly by the presence of the fungus mycelium, even after simulated digestion...
December 20, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29248133/hodgkin-lymphoma-a-complex-metabolic-ecosystem-with-glycolytic-reprogramming-of-the-tumor-microenvironment
#6
Lekha Mikkilineni, Diana Whitaker-Menezes, Marina Domingo-Vidal, John Sprandio, Paola Avena, Paolo Cotzia, Alina Dulau-Florea, Jerald Gong, Guldeep Uppal, Tingting Zhan, Benjamin Leiby, Zhao Lin, Barbara Pro, Federica Sotgia, Michael P Lisanti, Ubaldo Martinez-Outschoorn
BACKGROUND: Twenty percent of patients with classical Hodgkin Lymphoma (cHL) have aggressive disease defined as relapsed or refractory disease to initial therapy. At present we cannot identify these patients pre-treatment. The microenvironment is very important in cHL because non-cancer cells constitute the majority of the cells in these tumors. Non-cancer intra-tumoral cells, such as tumor-associated macrophages (TAMs) have been shown to promote tumor growth in cHL via crosstalk with the cancer cells...
June 2017: Seminars in Oncology
https://www.readbyqxmd.com/read/29247655/behavioral-thermoregulation-in-a-small-herbivore-avoids-direct-uvb-damage
#7
Wan-Dong Yin, Ary A Hoffmann, Xin-Bo Gu, Chun-Sen Ma
Direct damage of increased solar ultraviolet-B (UVB) on organism fitness has attracted attention due to stratospheric ozone depletion. Although most ectotherms are not capable of detecting and avoiding solar UVB, they may avoid direct exposure to solar UVB via thermoregulation behavior. However, it is still not clear whether organisms are harmed by ambient UVB radiation before escaping to shaded microhabitats. In this study we used the English grain aphid, Sitobion avenae (Hemiptera: Aphididae), to test whether sunlight-avoidance behavior was caused by heat stress rather than UVB, and whether behavioral thermoregulation in shaded microhabitats contributes to avoidance or reduction of direct UVB damage...
December 13, 2017: Journal of Insect Physiology
https://www.readbyqxmd.com/read/29238085/communication-dynamics-in-complex-brain-networks
#8
REVIEW
Andrea Avena-Koenigsberger, Bratislav Misic, Olaf Sporns
Neuronal signalling and communication underpin virtually all aspects of brain activity and function. Network science approaches to modelling and analysing the dynamics of communication on networks have proved useful for simulating functional brain connectivity and predicting emergent network states. This Review surveys important aspects of communication dynamics in brain networks. We begin by sketching a conceptual framework that views communication dynamics as a necessary link between the empirical domains of structural and functional connectivity...
December 14, 2017: Nature Reviews. Neuroscience
https://www.readbyqxmd.com/read/29232132/cobalt-and-vanadium-trimetaphosphate-polyanions-synthesis-characterization-and-electrochemical-evaluation-for-non-aqueous-redox-flow-battery-applications
#9
Julia M Stauber, Shiyu Zhang, Nataliya Gvozdik, Yanfeng Jiang, Laura Avena, Keith J Stevenson, Christopher C Cummins
An electrochemical cell consisting of cobalt ([CoII/III(P3O9)2]4-/3-) and vanadium ([VIII/II(P3O9)2]3-/4-) bistrimetaphosphate complexes as catholyte and anolyte species, respectively, was constructed with a cell voltage of 2.4 V and Coulombic efficiencies exceeding 90% for up to 100 total cycles. The [Co(P3O9)2]4- (1) and [V(P3O9)2]3- (2) complexes have favorable properties for flow-battery applications that include reversible redox chemistry, high stability toward electrochemical cycling, and high solubility in MeCN (1...
December 12, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29222636/identification-introgression-and-molecular-marker-genetic-analysis-and-selection-of-a-highly-effective-novel-oat-crown-rust-resistance-from-diploid-oat-avena-strigosa
#10
Howard W Rines, Marisa E Miller, Martin Carson, Shiaoman Chao, Tyler Tiede, Jochum Wiersma, Shahryar F Kianian
Oat crown rust is one of the most damaging diseases of oat. We identified a new source of resistance and developed KASP and TaqMan markers for selection in breeding programs. A new highly effective resistance to oat crown rust (Puccinia coronata f. sp. avenae) was identified in the diploid oat Avena strigosa PI 258731 and introgressed into hexaploid cultivated oat. Young plants with this resistance show moderate susceptibility, whereas older plant tissues and adult plants are resistant with no virulent isolates encountered in over 8 years of testing...
December 6, 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/29211238/bibliometric-indicators-of-the-nursing-journals-according-to-the-index-databases
#11
Magdalena José Avena, Dulce Aparecida Barbosa
Objective To analyze the bibliometric indicators of the national and international journals in the area of nursing from the perspective of index databases. Method A historical cohort referring to the period of 2014 to 2016. National nursing journals indexed in the SciELO database and classified in the Qualis as A1, A2 and B1, and international nursing journals with impact factor above 1.0 and below 1.8, indexed in the Web of Science and Scopus Bases, were selected. Nursing specialty periodicals were excluded...
2017: Revista da Escola de Enfermagem da U S P
https://www.readbyqxmd.com/read/29207547/predicted-release-and-analysis-of-novel-ace-i-renin-and-dpp-iv-inhibitory-peptides-from-common-oat-avena-sativa-protein-hydrolysates-using-in-silico-analysis
#12
Stephen Bleakley, Maria Hayes, Nora O' Shea, Eimear Gallagher, Tomas Lafarga
The renin-angiotensin-aldosterone system (RAAS) plays an important role in regulating hypertension by controlling vasoconstriction and intravascular fluid volume. RAAS itself is largely regulated by the actions of renin (EC 3.4.23.15) and the angiotensin-I-converting enzyme (ACE-I; EC 3.4.15.1). The enzyme dipeptidyl peptidase-IV (DPP-IV; EC 3.4.14.5) also plays a role in the development of type-2 diabetes. The inhibition of the renin, ACE-I, and DPP-IV enzymes has therefore become a key therapeutic target for the treatment of hypertension and diabetes...
December 4, 2017: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/29190130/genomic-relationships-among-sixteen-avena-species-based-on-act-6-trinucleotide-repeat-fish
#13
Xiaomei Luo, Nicholas A Tinker, Yong-Hong Zhou, Charlene P Wight, Juncheng Liu, Wenlin Wan, Liang Chen, Yuanying Peng
Knowledge of the locations of repeat elements could be very important in the assembly of genome sequences and assignment to physical chromosomes. Genomic and species relationships among sixteen species were investigated using fluorescence in situ hybridization (FISH) with the Am1 and (ACT)6 probes. The Am1 oligonucleotide probe was particularly enriched in the C genomes, whereas the (ACT)6 trinucleotide repeat probe showed a diverse distribution of hybridization patterns in the A, AB, C, AC, and ACD genomes but might not be present in the B and D genomes...
November 30, 2017: Genome Génome / Conseil National de Recherches Canada
https://www.readbyqxmd.com/read/29169105/constitutive-redox-and-phosphoproteome-changes-in-multiple-herbicide-resistant-avena-fatua-l-are-similar-to-those-of-systemic-acquired-resistance-and-systemic-acquired-acclimation
#14
Erin E Burns, Barbara K Keith, Mohammed Y Refai, Brian Bothner, William E Dyer
Plants are routinely confronted with numerous biotic and abiotic stressors, and in response have evolved highly effective strategies of systemic acquired resistance (SAR) and systemic acquired acclimation (SAA), respectively. A much more evolutionarily recent abiotic stress is the application of herbicides to control weedy plants, and their intensive use has selected for resistant weed populations that cause substantial crop yield losses and increase production costs. Non-target site resistance (NTSR) to herbicides is rapidly increasing worldwide and is associated with alterations in generalized stress defense networks...
November 20, 2017: Journal of Plant Physiology
https://www.readbyqxmd.com/read/29163408/environmental-nutrient-supply-directly-alters-plant-traits-but-indirectly-determines-virus-growth-rate
#15
Christelle Lacroix, Eric W Seabloom, Elizabeth T Borer
Ecological stoichiometry and resource competition theory both predict that nutrient rates and ratios can alter infectious disease dynamics. Pathogens such as viruses hijack nutrient rich host metabolites to complete multiple steps of their epidemiological cycle. As the synthesis of these molecules requires nitrogen (N) and phosphorus (P), environmental supply rates, and ratios of N and P to hosts can directly limit disease dynamics. Environmental nutrient supplies also may alter virus epidemiology indirectly by changing host phenotype or the dynamics of coinfecting pathogens...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29162876/transcriptome-analysis-of-the-salivary-glands-of-the-grain-aphid-sitobion-avenae
#16
Yong Zhang, Jia Fan, Jingrui Sun, Frédéric Francis, Julian Chen
Aphid saliva plays important roles in aphid-host interactions, such as assisting aphid digestion, detoxification, activating or suppressing plant defenses. The grain aphid, Sitobion avenae, is one of the most devastating pests of cereals worldwide. In this study, we performed the transcriptome analysis of salivary glands of S. avenae. A total of 33,079 assembled unigenes were identified in the salivary glands of aphids. Of the all obtained unigenes, 15,833(47.86%) and 10,829(32.73%) unigenes showed high similarity to known proteins in Nr and Swiss-Prot databases respectively...
November 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29146257/klebsiella-sp-confers-enhanced-tolerance-to-salinity-and-plant-growth-promotion-in-oat-seedlings-avena-sativa
#17
Swapnil Sapre, Iti Gontia-Mishra, Sharad Tiwari
Plant growth and yield is adversely affected by soil salinity. Salt tolerant plant growth-promoting rhizobacteria (PGPR) strain IG 3 was isolated from rhizosphere of wheat plants. The isolate IG 3 was able to grow in presence of NaCl ranging from 0 to 20% in Luria Bertani medium. The present study was planned to evaluate the role of inoculation of PGPR strain IG 3 and its efficacy in augmenting salt tolerance in oat (Avena sativa) under NaCl stress (100mM). The physiological parameter such as shoot length, root length, shoot dry weight, root dry weight and relative water content (RWC) were remarkably higher in IG 3 inoculated plants in comparison to un-inoculated plants under NaCl stress...
January 2018: Microbiological Research
https://www.readbyqxmd.com/read/29122351/macroaggregation-and-soil-organic-carbon-restoration-in-a-highly-weathered-brazilian-oxisol-after-two-decades-under-no-till
#18
Ademir de Oliveira Ferreira, João Carlos de Moraes Sá, Rattan Lal, Florent Tivet, Clever Briedis, Thiago Massao Inagaki, Daniel Ruiz Potma Gonçalves, Jucimare Romaniw
Conclusions based on studies of the impacts of soil organic carbon (SOC) fractions and soil texture on macroaggregation and SOC stabilization in long-term (>20years) no-till (NT) fields remain debatable. This study was based on the hypothesis that the amount and frequency of biomass-C input associated with NT can be a pathway to formation of macroaggregates and to SOC buildup. The objectives were to: 1) assess the macroaggregate distribution (proportional mass, class mass) and the SOC and particulate organic carbon (POC) stocks of extra-large (8-19mm), large (2-8mm) and small (0...
November 6, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29112114/role-of-scaffold-protein-proline-glutamic-acid-and-leucine-rich-protein-1-pelp1-in-the-modulation-of-adrenocortical-cancer-cell-growth
#19
Arianna De Luca, Paola Avena, Rosa Sirianni, Adele Chimento, Francesco Fallo, Catia Pilon, Ivan Casaburi, Vincenzo Pezzi
PELP1 acts as an estrogen receptor (ER) coactivator that exerts an essential role in the ER's functions. ER coregulators have a critical role in the progression and response to hormonal treatment of estrogen-dependent tumors. We previously demonstrated that, in adrenocortical carcinoma (ACC), ERα is upregulated and that estradiol activates the IGF-II/IGF1R signaling pathways defining the role of this functional cross-talk in H295R ACC cell proliferation. The aim of this study was to determine if PELP1 is expressed in ACC and may play a role in promoting the interaction between ERα and IGF1R allowing the activation of pathways important for ACC cell growth...
November 7, 2017: Cells
https://www.readbyqxmd.com/read/29109915/mechanisms-of-oat-avena-sativa-l-acclimation-to-phosphate-deficiency
#20
Ewa Żebrowska, Marta Milewska, Iwona Ciereszko
Background: Deficiency of available forms of phosphorus is common in most soils and causes reduction of crop plants growth and yield. Recently, model plants responses to phosphate (Pi) deficiency have been intensively studied. However, acclimation mechanisms of cereals like oat (Avena sativa L.), to low Pi stress remains not fully understood. Oat plants have been usually cultured on poor soils, with a low nutrient content, but their responses to such conditions are not well known, therefore the main goal of the study was to investigate the mechanisms that enable oat plants to grow under low Pi conditions...
2017: PeerJ
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