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A J Christensen, Venkatraman Srinivasan, John C Hart, Amy Marshall-Colon
Sustainable crop production is a contributing factor to current and future food security. Innovative technologies are needed to design strategies that will achieve higher crop yields on less land and with fewer resources. Computational modeling coupled with advanced scientific visualization enables researchers to explore and interact with complex agriculture, nutrition, and climate data to predict how crops will respond to untested environments. These virtual observations and predictions can direct the development of crop ideotypes designed to meet future yield and nutritional demands...
March 17, 2018: Nutrition Reviews
Mitsuko Kishi-Kaboshi, Shigemi Seo, Akira Takahashi, Hirohiko Hirochika
Phenylpropanoids including diverse compounds, such as monolignols and hydroxycinnamic acids (HCAAs), are essential for land plants to protect them against abiotic stresses, and create physical and chemical barriers to pathogen infection. However, the production control of these compounds against to pathogens has been poorly understood. Previously we showed that a MAMP (microbe-associated molecular pattern) -responsive MAPK (mitogen-activated protein kinase) cascade (MKK4-MPK3/MPK6) comprehensively induced the expression of cinnamate/monolignol synthesis genes in rice cells...
March 19, 2018: Plant & Cell Physiology
N Sharma, P W Hunt, B C Hine, N K Sharma, A Chung, R A Swick, I Ruhnke
A study was conducted to determine the performance, egg quality, and liver lipid reserves of laying hens exposed to ranges contaminated with Ascaridia galli. Sixteen-week-old Lohmann Brown laying hens (n = 200) were divided into 4 treatments with 5 replicates containing 10 hens per pen. Hens of treatment 1 [negative control (NC)] ranged on a decontaminated area, and hens of treatments 2 (low infection) and 3 (medium infection) ranged on areas previously contaminated by hens artificially infected with 250 and 1,000 embryonated A...
March 16, 2018: Poultry Science
Shuting Cao, Huan Wu, ChunChun Wang, Qianhui Zhang, Lefei Jiao, Fanghui Lin, Caihong Hu
In the present study, we investigated the influence of diquat-induced oxidative stress on intestinal barrier, mitochondrial function and the level of mitophagy in piglets. Twelve male Duroc×Landrace×Yorkshire 35-d-old pigs (weaned at 21d of age), with an average body of 9.6 kg, were allotted to two treatments of six piglets each including the challenged group and the control group. The challenged pigs were injected with 100 mg/kg bodyweight diquat and control pigs injected with 0.9% (w/v) NaCl solution. The results showed that diquat injection decreased average daily feed intake and average daily gain...
March 17, 2018: Journal of Animal Science
M Clare Butler Ellis, Marc C Kennedy, Christian J Kuster, Rafael Alanis, Clive R Tuck
The BREAM (Bystander and Resident Exposure Assessment Model) (Kennedy et al. in BREAM: A probabilistic bystander and resident exposure assessment model of spray drift from an agricultural boom sprayer. Comput Electron Agric 2012;88:63-71) for bystander and resident exposure to spray drift from boom sprayers has recently been incorporated into the European Food Safety Authority (EFSA) guidance for determining non-dietary exposures of humans to plant protection products. The component of BREAM, which relates airborne spray concentrations to bystander and resident dermal exposure, has been reviewed to identify whether it is possible to improve this and its description of variability captured in the model...
March 17, 2018: Annals of Work Exposures and Health
Åsa Svedmark, Martin Björklund, Charlotte K Häger, Johan Nilsson Sommar, Jens Wahlström
Introduction: The aim was to evaluate if pain, disability, and work productivity are influenced by physical and psychosocial work exposures as well as by stress, up to 1 year after a randomized controlled trial treatment intervention, and to determine whether any such association differed between treatment and control groups. Methods: Ninety-seven working women suffering non-specific neck pain (n = 67 treatment group, n = 30 control group) were followed from end of treatment intervention and at 9- and 15-month follow-ups, respectively...
March 17, 2018: Annals of Work Exposures and Health
Ramy K A Sayed, Marisol Fernández-Ortiz, María E Diaz-Casado, Iryna Rusanova, Ibtissem Rahim, Germaine Escames, Luis C López, Doaa M Mokhtar, Darío Acuña-Castroviejo
To gain insight into the mechanism of sarcopenia and the protective effect of melatonin, the gastrocnemius muscles of young (3-4 months), early-aged (12 months), and old-aged (24 months) wild type C57BL/6J female mice, were examined by magnetic resonance and microscopy. Locomotor activity, lactate production and nuclear apoptosis were also assessed. The results support the early onset of sarcopenia at 12 months of age, with reduction of muscle fibers' number, muscle weight/body weight ratio, lactate, and locomotor activity...
March 19, 2018: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
Xiao Fang Zhu, Xu Sheng Zhao, Qi Wu, Ren Fang Shen
Background: Abscisic acid (ABA) is a well-studied phytohormone demonstrated to be involved in sub-sets of stress responses in plants, such as iron (Fe) deficiency and phosphorus (P) deficiency in Arabidopsis. However, whether ABA is involved in P deficiency in rice has not been frequently studied. The present study was undertaken to investigate the mechanism underlying ABA-aggravated P deficiency in rice (Oryza sativa). Results: P deficiency decreased ABA accumulation rapidly (within 1 h) in the roots...
March 17, 2018: Annals of Botany
Rabab A Moussa, Ahmed N Eesa, Zeinab F Abdallah, Ayman Abdelmeged, Ahmed Mahran, Haitham Bahaa
Objectives: This study aims to assess whether the expression of Twist1, Ki-67, and E-cadherin can guide the differential diagnosis of complete hydatidiform mole (CHM), partial hydatidiform mole (PHM), and hydropic abortion (HA). Methods: Differential expression of Twist1, Ki-67, and E-cadherin was analyzed in gestational products from 55 cases of CHM, PHM, and HA using immunohistochemistry. Prior to analysis, the studied cases were confirmed for their diagnosis by flow cytometric assessment of DNA ploidy and p57 immunostaining...
March 19, 2018: American Journal of Clinical Pathology
Ulrike Bechtold, John N Ferguson, Philip M Mullineaux
The emergence of Arabidopsis as a model species and the availability of genetic and genomic resources have resulted in the identification and detailed characterisation of abiotic stress signalling pathways. However, this has led only to limited success in engineering abiotic stress tolerance in crops. This is because there needs to be a deeper understanding in how to combine resistances to a range of stresses with growth and productivity. The natural variation and genomic resources of Arabidopsis thaliana (Arabidopsis) is a great asset to understand the mechanisms of multiple stress tolerances...
March 17, 2018: Journal of Experimental Botany
Qingna Zhao, Xueze Lv, Yaxiong Jia, Yu Chen, Guiyun Xu, Lujiang Qu
Current analytical methods used for composition analysis of egg products are time consuming and laborious. We developed a near-infrared reflectance spectroscopy (NIRS)-based method to determine the fat, moisture, and protein contents in homogenized egg yolk and the moisture and protein contents in homogenized egg albumen to substitute for conventional methods. The coefficients of determination in the external validation set (R2P) were over 0.8 for all chemical compositions. The ratios of performance to standard deviation (RPD) were 4...
March 19, 2018: Poultry Science
A Leiva, F Granados-Chinchilla, M Redondo-Solano, M Arrieta-González, E Pineda-Salazar, A Molina
Animal by-product rendering establishments are still relevant industries worldwide. Animal by-product meal safety is paramount to protect feed, animals, and the rest of the food chain from unwanted contamination. As microbiological contamination may arise from inadequate processing of slaughterhouse waste and deficiencies in good manufacturing practices within the rendering facilities, we conducted an overall establishment's inspection, including the product in several parts of the process.An evaluation of the Good Manufacturing Practices (GMP) was carried out, which included the location and access (i...
March 19, 2018: Poultry Science
Maureen Mackintosh, Julius Mugwagwa, Geoffrey Banda, Paula Tibandebage, Jires Tunguhole, Samuel Wangwe, Mercy Karimi Njeru
The benefits of local production of pharmaceuticals in Africa for local access to medicines and to effective treatment remain contested. There is scepticism among health systems experts internationally that production of pharmaceuticals in sub-Saharan Africa (SSA) can provide competitive prices, quality and reliability of supply. Meanwhile low-income African populations continue to suffer poor access to a broad range of medicines, despite major international funding efforts. A current wave of pharmaceutical industry investment in SSA is associated with active African government promotion of pharmaceuticals as a key sector in industrialization strategies...
March 19, 2018: Health Policy and Planning
Penny J Tricker, Abdeljalil ElHabti, Jessica Schmidt, Delphine Fleury
Drought and heat stress cause losses in wheat productivity in major growing regions worldwide, and both the occurrence and the severity of these events is likely to increase with global climate change. Water deficits and high temperatures frequently occur simultaneously at sensitive growth stages, reducing wheat yields by reducing grain number or weight. Although genetic variation and underlying quantitative trait loci for either individual stress are known, the combination of the two stresses has rarely been studied...
March 17, 2018: Journal of Experimental Botany
Evan M Zhao, Yanfei Zhang, Justin Mehl, Helen Park, Makoto A Lalwani, Jared E Toettcher, José L Avalos
The optimization of engineered metabolic pathways requires careful control over the levels and timing of metabolic enzyme expression. Optogenetic tools are ideal for achieving such precise control, as light can be applied and removed instantly without complex media changes. Here we show that light-controlled transcription can be used to enhance the biosynthesis of valuable products in engineered Saccharomyces cerevisiae. We introduce new optogenetic circuits to shift cells from a light-induced growth phase to a darkness-induced production phase, which allows us to control fermentation with only light...
March 21, 2018: Nature
Misty R Riddle, Ariel C Aspiras, Karin Gaudenz, Robert Peuß, Jenny Y Sung, Brian Martineau, Megan Peavey, Andrew C Box, Julius A Tabin, Suzanne McGaugh, Richard Borowsky, Clifford J Tabin, Nicolas Rohner
Periodic food shortages are a major challenge faced by organisms in natural habitats. Cave-dwelling animals must withstand long periods of nutrient deprivation, as-in the absence of photosynthesis-caves depend on external energy sources such as seasonal floods. Here we show that cave-adapted populations of the Mexican tetra, Astyanax mexicanus, have dysregulated blood glucose homeostasis and are insulin-resistant compared to river-adapted populations. We found that multiple cave populations carry a mutation in the insulin receptor that leads to decreased insulin binding in vitro and contributes to hyperglycaemia...
March 21, 2018: Nature
Jie Meng, Wen-Xiong Wang, Li Li, Guofan Zhang
Lead (Pb) is one of the ubiquitous and toxic elements in aquatic environment. In oysters, gills and digestive glands are the main target organs for Pb-induced toxicity, but there is limited information on the molecular mechanisms underlying its toxicity. The present study investigated the Pb-induced toxicity mechanisms in the Pacific oyster (Crassostrea gigas) based on transcriptome, phenotypic anchoring, and validation of targeted gene expression. Gene ontology and pathway enrichment analyses revealed the differential Pb toxicity mechanisms in the tissues...
March 13, 2018: Aquatic Toxicology
Brant Gracia, Hashim M Al-Hashimi, Namita Bisaria, Rhiju Das, Daniel Herschlag, Rick Russell
Large-scale, cooperative rearrangements underlie the functions of RNA in RNA-protein machines and gene regulation. To understand how such rearrangements are orchestrated, we used high-throughput chemical footprinting to dissect a seemingly concerted rearrangement in P5abc RNA, a paradigm of RNA folding studies. With mutations that systematically disrupt or restore putative structural elements, we found that this transition reflects local folding of structural modules, with modest and incremental cooperativity that results in concerted behavior...
March 20, 2018: Cell Reports
Xue Diao, Yiye Hang, Chenglan Liu
Tebuconazole, which consists of a pair of enantiomers with different fungicidal activities, is one of the most common fungicides used in the control of Fusarium graminearum. In this study, the fungicidal activity of rac-tebuconazole and its enantiomers against F. graminearum was determined at 0.997, 0.975, 0.950 aw and at 20, 25, 30 °C on wheat-based media. Then, F. graminearum treated with rac-tebuconazole and its enantiomers at the EC10, EC50 and EC90 levels under different culture conditions, and DON production was measured...
March 21, 2018: Journal of Agricultural and Food Chemistry
Shivaji Thadke, J Dinithi R Perera, V M Hridya, Kirti Bhatt, Ashif Yasin Shaikh, Wei-Che Hsieh, Mengshen David Chen, Chakicherla Gayathri, Roberto R Gil, Gordon S Rule, Arnab Mukherjee, Charles A Thornton, Danith H Ly
We report the development of a new class of nucleic acid ligands that is comprised of Janus bases and MPPNA backbone and is capable of binding rCAG-repeats in a sequence-specific and selective manner via, inference, bivalent H-bonding interactions. Individually, the interactions between ligands and RNA are weak and transient. However, upon the installation of C-terminal thioester and N-terminal cystine and the reduction of disulfide bond, they undergo template-directed native chemical ligation to form concatenated oligomeric products that bind tightly to the RNA template...
March 21, 2018: Biochemistry
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