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https://www.readbyqxmd.com/read/29146257/klebsiella-sp-confers-enhanced-tolerance-to-salinity-and-plant-growth-promotion-in-oat-seedlings-avena-sativa
#1
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
#2
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
#3
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
#4
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
https://www.readbyqxmd.com/read/29109373/development-of-a-lethal-intranasal-exposure-model-of-ebola-virus-in-the-cynomolgus-macaque
#5
Kendra J Alfson, Laura E Avena, Gabriella Worwa, Ricardo Carrion, Anthony Griffiths
Ebola virus (EBOV) is a filovirus that can cause Ebola virus disease (EVD). No approved vaccines or therapies exist for filovirus infections, despite an urgent need. The development and testing of effective countermeasures against EBOV requires use of animal models and a thorough understanding of how the model aligns with EVD in humans. The majority of published studies report outcomes of parenteral exposures for emulating needle stick transmission. However, based on data from EVD outbreaks, close contact exposures to infected bodily fluid seems to be one of the primary routes of EBOV transmission...
October 29, 2017: Viruses
https://www.readbyqxmd.com/read/29105256/fusarium-crown-rot-caused-by-fusarium-pseudograminearum-in-cereal-crops-recent-progress-and-future-prospects
#6
Kemal Kazan, Donald Gardiner
Diseases caused by Fusarium pathogens inflict major yield and quality losses on many economically important plant species worldwide, including cereals. Fusarium crown rot (FCR) caused by Fusarium pseudograminearum is a cereal disease that occurs in many arid and semi-arid cropping regions of the world. In recent years, this disease has become more prevalent, in part due to the adoption of moisture-preserving cultural practices such as minimum tillage and stubble retention. In this pathogen profile, we present a brief overview of recent research efforts that not only have advanced our understanding of the interactions between F...
November 4, 2017: Molecular Plant Pathology
https://www.readbyqxmd.com/read/29101332/transcriptional-responses-of-wheat-and-the-cereal-cyst-nematode-heterodera-avenae-during-their-early-contact-stage
#7
Changlong Chen, Lei Cui, Yongpan Chen, Hongjun Zhang, Pei Liu, Peipei Wu, Dan Qiu, Jingwei Zou, Dan Yang, Li Yang, Hongwei Liu, Yang Zhou, Hongjie Li
Cereal cyst nematode (Heterodera avenae) is attracted to and aggregated around wheat roots to initiate infection, but this interaction between wheat and the nematode is not fully understood. The transcriptional responses of both wheat and H. avenae were examined during their early contact stage by mRNA sequencing analysis; certain numbers of the differentially expressed genes (DEGs) were validated using quantitative real-time PCR. The immobile host wheat root only had 93 DEGs (27 up-regulated and 66 down-regulated), while the mobile plant parasitic nematode reacted much more actively with 879 DEGs (867 up-regulated and 12 down-regulated)...
November 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29099952/in-vitro-and-in-vivo-effects-of-%C3%AE-amylase-inhibitor-from-avena-sativa-seeds-on-life-history-and-physiological-characteristics-of-sitotroga-cerealella-lepidoptera-gelechiidae
#8
Ehsan Borzoui, Gadir Nouri-Ganbalani, Bahram Naseri
The inhibitory effects of Avena sativa L. seed extract were studied on life history and some physiological aspects of Sitotroga cerealella (Olivier; Lepidoptera: Gelechiidae). The inhibition of α-amylase activity in vitro by A. sativa proteinaceous extract suggested its potential antimetabolic effect on S. cerealella larvae. Although, chronic ingestion of A. sativa inhibitor (I10: 0.108 mg protein/artificial seed) did not show significant reduction of the growth and development of S. cerealella. However, a delay in the developmental time of immature stages was detected when S...
November 1, 2017: Journal of Insect Science
https://www.readbyqxmd.com/read/29089018/rapid-turnover-of-effectors-in-grass-powdery-mildew-blumeria-graminis
#9
Fabrizio Menardo, Coraline R Praz, Thomas Wicker, Beat Keller
BACKGROUND: Grass powdery mildew (Blumeria graminis, Ascomycota) is a major pathogen of cereal crops and has become a model organism for obligate biotrophic fungal pathogens of plants. The sequenced genomes of two formae speciales (ff.spp.), B.g. hordei and B.g. tritici (pathogens of barley and wheat), were found to be enriched in candidate effector genes (CEGs). Similar to other filamentous pathogens, CEGs in B. graminis are under positive selection. Additionally, effectors are more likely to have presence-absence polymorphisms than other genes among different strains...
October 31, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/29083384/why-oats-are-safe-and-healthy-for-celiac-disease-patients
#10
REVIEW
Luud J W J Gilissen, Ingrid M van der Meer, Marinus J M Smulders
The water-insoluble storage proteins of cereals (prolamins) are called "gluten" in wheat, barley, and rye, and "avenins" in oat. Gluten can provoke celiac disease (CD) in genetically susceptible individuals (those with human leukocyte antigen (HLA)-DQ2 or HLA-DQ8 serotypes). Avenins are present at a lower concentration (10%-15% of total protein content) in oat as compared to gluten in wheat (80%-85%). The avenins in the genus Avena (cultivated oat as well as various wild species of which gene bank accessions were analyzed) are free of the known CD immunogenic epitopes from wheat, barley, and rye...
November 26, 2016: Medical Sciences: Open Access Journal
https://www.readbyqxmd.com/read/29062157/the-mesostigmatid-mite-protogamasellus-mica-an-effective-predator-of-free-living-and-plant-parasitic-nematodes
#11
Graham R Stirling, A Marcelle Stirling, David E Walter
Protogamasellus mica was extracted from a sugarcane field in Australia and cultured on bacterial-feeding nematodes. Studies with various nematodes in laboratory arenas showed that one mite and its progeny reduced nematode numbers by between 26 and 50 nematodes/day. A bacterivore (Mesorhabditis sp.), a fungivore (Aphelenchus avenae), and two plant parasites (root-knot nematode, Meloidogyne javanica and root-lesion nematode, Pratylenchus zeae) were all reduced at much the same rate despite the fact that the nematodes are quite different in size and motility and belong to different trophic groups...
September 2017: Journal of Nematology
https://www.readbyqxmd.com/read/29053722/impact-of-water-deficit-stress-on-tritrophic-interactions-in-a-wheat-aphid-parasitoid-system
#12
Syed Suhail Ahmed, Deguang Liu, Jean-Christophe Simon
Increasing temperature and CO2 concentrations can alter tritrophic interactions in ecosystems, but the impact of increasingly severe drought on such interactions is not well understood. We examined the response of a wheat-aphid-parasitoid system to variation in water-deficit stress levels. Our results showed that arid area clones of the aphid, Sitobion avenae (Fabricius), tended to have longer developmental times compared to semiarid and moist area clones, and the development of S. avenae clones tended to be slower with increasing levels of water-deficit...
2017: PloS One
https://www.readbyqxmd.com/read/29038015/why-is-there-no-impact-of-the-host-species-on-the-cold-tolerance-of-a-generalist-parasitoid
#13
Lucy Alford, Hossein Kishani Farahani, Jean-Sébastien Pierre, Françoise Burel, Joan van Baaren
For generalist parasitoids such as those belonging to the Genus Aphidius, the choice of host species can have profound implications for the emerging parasitoid. Host species is known to affect a variety of life history traits. However, the impact of the host on thermal tolerance has never been studied. Physiological thermal tolerance, enabling survival at unfavourable temperatures, is not a fixed trait and may be influenced by a number of external factors including characteristics of the stress, of the individual exposed to the stress, and of the biological and physical environment...
October 14, 2017: Journal of Insect Physiology
https://www.readbyqxmd.com/read/29026142/stochastic-resonance-at-criticality-in-a-network-model-of-the-human-cortex
#14
Bertha Vázquez-Rodríguez, Andrea Avena-Koenigsberger, Olaf Sporns, Alessandra Griffa, Patric Hagmann, Hernán Larralde
Stochastic resonance is a phenomenon in which noise enhances the response of a system to an input signal. The brain is an example of a system that has to detect and transmit signals in a noisy environment, suggesting that it is a good candidate to take advantage of stochastic resonance. In this work, we aim to identify the optimal levels of noise that promote signal transmission through a simple network model of the human brain. Specifically, using a dynamic model implemented on an anatomical brain network (connectome), we investigate the similarity between an input signal and a signal that has traveled across the network while the system is subject to different noise levels...
October 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29024464/influence-of-lipophilicity-in-o-acyl-and-o-alkyl-derivatives-of-juglone-and-lawsone-a-structure-activity-relationship-study-in-the-search-for-natural-herbicide-models
#15
Alexandra G Durán, Nuria Chinchilla, José M G Molinillo, Francisco A Macías
BACKGROUND: Naphthoquinones are known for their broad range of biological activities. Given the increasing demands of consumers in relation to food quality and growing concerns about the impact of synthetic herbicides, it is necessary to search for new agrochemicals. Natural products and allelopathy provide new alternatives for the development of pesticides with lower toxicity and greater environmental compatibility. RESULTS: A structure-activity relationship to evaluate the effect of bioavailability was performed...
October 12, 2017: Pest Management Science
https://www.readbyqxmd.com/read/29023008/aphid-species-affect-foraging-behavior-of-coccinella-septempunctata-coccinellidae-coleoptera
#16
Muhammad Umar Farooq, Hafiz Faqir Hussain Qadri, Muhammad Ahmad Khan
BACKGROUND: Flowers are admirable in scenic good looks and artistic beautification. These are also playing necessary roles in therapeutic preparations. Aphid is an important sucking pest of various flowers in ornamental territories and it is generally controlled by predators, so it was necessary to evaluate which aphid species affect the predator more or less. MATERIALS AND METHODS: Biocontrol agent Coccinella septempunctata was used against cosmos aphid (Aphis spiraecola, rose aphid (Macrosiphum rosea), gul e ashrafi aphid (Aphis fabae), kaner aphid (Aphis nerii), chandni aphid (Sitobion avenae), dahlia aphid (Myzus persicae) and annual chrysanthemum aphid (Macrosiphoniella sanborni)...
2017: Pakistan Journal of Biological Sciences: PJBS
https://www.readbyqxmd.com/read/29022119/sex-specific-cognitive-behavioural-profiles-emerging-from-individual-variation-in-numerosity-discrimination-in-gambusia-affinis
#17
R Ian Etheredge, Capucine Avenas, Matthew J Armstrong, Molly E Cummings
The relationship between an individual's cognitive abilities and other behavioural attributes is complex, yet critical to understanding how individual differences in cognition arise. Here we use western mosquitofish, Gambusia affinis, to investigate the relationship between individual associative learning performance in numerical discrimination tests and independent measures of activity, exploration, anxiety and sociability. We found extensive and highly repeatable inter-individual variation in learning performance (r = 0...
October 11, 2017: Animal Cognition
https://www.readbyqxmd.com/read/29019957/application-of-multilayer-perceptron-with-automatic-relevance-determination-on-weed-mapping-using-uav-multispectral-imagery
#18
Afroditi A Tamouridou, Thomas K Alexandridis, Xanthoula E Pantazi, Anastasia L Lagopodi, Javid Kashefi, Dimitris Kasampalis, Georgios Kontouris, Dimitrios Moshou
Remote sensing techniques are routinely used in plant species discrimination and of weed mapping. In the presented work, successful Silybum marianum detection and mapping using multilayer neural networks is demonstrated. A multispectral camera (green-red-near infrared) attached on a fixed wing unmanned aerial vehicle (UAV) was utilized for the acquisition of high-resolution images (0.1 m resolution). The Multilayer Perceptron with Automatic Relevance Determination (MLP-ARD) was used to identify the S. marianum among other vegetation, mostly Avena sterilis L...
October 11, 2017: Sensors
https://www.readbyqxmd.com/read/29016604/novel-fine-scale-aerial-mapping-approach-quantifies-grassland-weed-cover-dynamics-and-response-to-management
#19
Carolyn M Malmstrom, H Scott Butterfield, Laura Planck, Christopher W Long, Valerie T Eviner
Invasive weeds threaten the biodiversity and forage productivity of grasslands worldwide. However, management of these weeds is constrained by the practical difficulty of detecting small-scale infestations across large landscapes and by limits in understanding of landscape-scale invasion dynamics, including mechanisms that enable patches to expand, contract, or remain stable. While high-end hyperspectral remote sensing systems can effectively map vegetation cover, these systems are currently too costly and limited in availability for most land managers...
2017: PloS One
https://www.readbyqxmd.com/read/28981611/spatiotemporal-network-markers-of-individual-variability-in-the-human-functional-connectome
#20
Cleofé Peña-Gómez, Andrea Avena-Koenigsberger, Jorge Sepulcre, Olaf Sporns
Functional connectivity (FC) analysis has revealed stable and reproducible features of brain network organization, as well as their variations across individuals. Here, we localize network markers of individual variability in FC and track their dynamical expression across time. First, we determine the minimal set of network components required to identify individual subjects. Among specific resting-state networks, we find that the FC pattern of the frontoparietal network allows for the most reliable identification of individuals...
July 11, 2017: Cerebral Cortex
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