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https://www.readbyqxmd.com/read/28894144/molecular-details-of-secretory-phospholipase-a2-from-flax-linum-usitatissimum-l-provide-insight-into-its-structure-and-function
#1
Payal Gupta, Prasanta K Dash
Secretory phospholipase A2 (sPLA2) are low molecular weight proteins (12-18 kDa) involved in a suite of plant cellular processes imparting growth and development. With myriad roles in physiological and biochemical processes in plants, detailed analysis of sPLA2 in flax/linseed is meagre. The present work, first in flax, embodies cloning, expression, purification and molecular characterisation of two distinct sPLA2s (I and II) from flax. PLA2 activity of the cloned sPLA2s were biochemically assayed authenticating them as bona fide phospholipase A2...
September 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28888608/effect-of-dietary-flax-seed-and-oil-on-milk-yield-gross-composition-and-fatty-acid-profile-in-dairy-cows-a-meta-analysis-and-meta-regression
#2
M Leduc, M-P Létourneau-Montminy, R Gervais, P Y Chouinard
Several experiments were conducted over the past few years to evaluate the feeding value of flax seed and oil in dairy cow diets. The current meta-analysis and meta-regression was undertaken to assess the overall effect of different forms of flax, as a source of trienoic (cis-9, cis-12, cis-15 18:3) fatty acids (FA), on lactation performance and on transfer efficiency of its constituent n-3 FA from diet to milk fat. Comparisons were first conducted with nonsupplemented controls or with diets containing either saturated (mainly 16:0 or 18:0 or both), monoenoic (mainly cis-9 18:1), or dienoic (mainly cis-9, cis-12 18:2) FA...
September 6, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28884128/erratum-to-mir319-mir390-and-mir393-are-involved-in-aluminum-response-in-flax-linum-usitatissimum-l
#3
Alexey A Dmitriev, Anna V Kudryavtseva, Nadezhda L Bolsheva, Alexander V Zyablitsin, Tatiana A Rozhmina, Natalya V Kishlyan, George S Krasnov, Anna S Speranskaya, Anastasia A Krinitsina, Asiya F Sadritdinova, Anastasiya V Snezhkina, Maria S Fedorova, Olga Yu Yurkevich, Olga V Muravenko, Maxim S Belenikin, Nataliya V Melnikova
[This corrects the article DOI: 10.1155/2017/4975146.].
2017: BioMed Research International
https://www.readbyqxmd.com/read/28878799/integration-of-physical-genetic-and-cytogenetic-mapping-data-for-cellulose-synthase-cesa-genes-in-flax-linum-usitatissimum-l
#4
Olga Y Yurkevich, Ilya V Kirov, Nadezhda L Bolsheva, Olga A Rachinskaya, Zoya E Grushetskaya, Svyatoslav A Zoschuk, Tatiana E Samatadze, Marina V Bogdanova, Valentina A Lemesh, Alexandra V Amosova, Olga V Muravenko
Flax, Linum usitatissimum L., is a valuable multi-purpose plant, and currently, its genome is being extensively investigated. Nevertheless, mapping of genes in flax genome is still remaining a challenging task. The cellulose synthase (CesA) multigene family involving in the process of cellulose synthesis is especially important for metabolism of this fiber crop. For the first time, fluorescent in situ hybridization (FISH)-based chromosomal localization of the CesA conserved fragment (KF011584.1), 5S, and 26S rRNA genes was performed in landrace, oilseed, and fiber varieties of L...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28841399/infant-and-young-child-feeding-decision-making-and-practices-malawian-mothers-and-fathers-roles-in-the-context-of-hiv
#5
Nainisha Chintalapudi, Gloria Hamela, Innocent Mofolo, Suzanne Maman, Mina C Hosseinipour, Irving F Hoffman, Valerie L Flax
BACKGROUND: Few studies in low- and middle-income countries have examined the roles of couples in infant and young child feeding decision making and practices, and there is no corresponding data in the context of human immunodeficiency virus (HIV). Research aim: This study aimed to explore mothers' and fathers' perceptions of their roles in feeding decision making and practices. METHODS: The authors conducted in-depth interviews with 15 mothers and their male partners, recruited from the catchment areas of two urban and two rural government clinics in Lilongwe District, Malawi...
August 1, 2017: Journal of Human Lactation: Official Journal of International Lactation Consultant Association
https://www.readbyqxmd.com/read/28838555/distinct-effects-of-dietary-flax-compared-to-fish-oil-soy-protein-compared-to-casein-and-sex-on-the-renal-oxylipin-profile-in-models-of-polycystic-kidney-disease
#6
Jessay G Devassy, Tamio Yamaguchi, Md Monirujjaman, Melissa Gabbs, Amir Ravandi, Jing Zhou, Harold M Aukema
Oxylipins are bioactive lipids derived from polyunsaturated fatty acids (PUFA) that are important regulators of kidney function and health. Targeted lipidomic analyses of renal oxylipins from four studies of rodent models of renal disease were performed to investigate the differential effects of dietary flax compared to fish oil, soy protein compared to casein, and sex. Across all studies, dietary fish oil was more effective than flax oil in reducing n-6 PUFA derived oxylipins and elevating eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) derived oxylipins, whereas dietary flax oil resulted in higher α-linolenic acid (ALA) oxylipins...
August 2017: Prostaglandins, Leukotrienes, and Essential Fatty Acids
https://www.readbyqxmd.com/read/28821127/a-comparative-study-on-cellulose-nanocrystals-extracted-from-bleached-cotton-and-flax-and-used-for-casting-films-with-glycerol-and-sorbitol-plasticisers
#7
Emilia Csiszár, Sebestyén Nagy
Cellulose nanocrystals (CNCs) were released from bleached cotton and flax by a sulphuric acid hydrolysis with about 40 and 34% yield, respectively. The rod-like cotton-CNC particles were slightly longer and wider and had a less pronounced aggregation ability in aqueous suspension than the flax-CNC ones. Films were cast from the CNC suspensions with sorbitol and glycerol plasticisers. The concept behind this research was to explore how the plasticisers - with similar structure but different molecular weight - and their concentrations affect the perceptible and measured properties of CNC films...
October 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28817232/crystal-structure-of-the-melampsora-lini-effector-avrp-reveals-insights-into-a-possible-nuclear-function-and-recognition-by-the-flax-disease-resistance-protein-p
#8
Xiaoxiao Zhang, Nadya Farah, Laura Rolston, Daniel J Ericsson, Ann-Maree Catanzariti, Maud Bernoux, Thomas Ve, Katerina Bendak, Chunhong Chen, Joel P Mackay, Gregory J Lawrence, Adrienne Hardham, Jeffrey G Ellis, Simon J Williams, Peter N Dodds, David A Jones, Bostjan Kobe
The effector protein AvrP is secreted by the flax rust fungal pathogen (Melampsora lini) and recognized specifically by the flax (Linum usitatissimum) P disease resistance protein, leading to effector-triggered immunity. To investigate the biological function of this effector and mechanisms of specific recognition by the P resistance protein, we determined the crystal structure of AvrP. The structure reveals an elongated zinc-finger-like structure with a novel interleaved zinc-binding topology. The residues responsible for zinc binding are conserved in AvrP effector variants and mutations of these motifs result in loss of P-mediated recognition...
August 17, 2017: Molecular Plant Pathology
https://www.readbyqxmd.com/read/28808218/setting-kinetics-and-mechanical-properties-of-flax-fibre-reinforced-glass-ionomer-restorative-materials
#9
Ensanya Ali Abou Neel, Anne M Young
Regardless of the excellent properties of glass ionomer cements, their poor mechanical properties limit their applications to non-load bearing areas. This study aimed to investigate the effect of incorporated short, chopped and randomly distributed flax fibers (0, 0.5, 1, 2.5, 5 and 25 wt%) on setting reaction kinetics, and mechanical and morphological properties of glass ionomer cements. Addition of flax fibers did not significantly affect the setting reaction extent. According to their content, flax fibers increased the compressive (from 148 to 250 MPa) and flexure strength (from 20 to 42 MPa)...
January 19, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28792104/expression-analysis-of-cellulose-synthase-and-main-cytoskeletal-protein-genes-in-flax-linum-usitatissimum-l
#10
Dmitry Galinousky, Tsimafei Padvitski, Galina Bayer, Yaroslav Pirko, Nikolay Pydiura, Natallia Anisimova, Tatyana Nikitinskaya, Liubov Khotyleva, Alla Yemets, Aleksandr Kilchevsky, Yaroslav Blume
Fiber flax is an important source of natural fiber and a comprehensive model for the plant fiber biogenesis studies. Cellulose-synthase (CesA) and cytoskeletal genes are known to be important for the cell wall biogenesis in general and for the biogenesis of flax fibers in particular. Currently, knowledge about activity of these genes during the plant growth is limited. In this study, we have investigated flax fiber biogenesis by measuring expression of CesA and cytoskeletal genes at two stages of the flax development (seedlings and stems at the rapid growth stage) in several flax subspecies (elongatum, mediterraneum, crepitans)...
August 9, 2017: Cell Biology International
https://www.readbyqxmd.com/read/28774122/cellulose-nanocrystal-membranes-as-excipients-for-drug-delivery-systems
#11
Ananda M Barbosa, Eduardo Robles, Juliana S Ribeiro, Rafael G Lund, Neftali L V Carreño, Jalel Labidi
In this work, cellulose nanocrystals (CNCs) were obtained from flax fibers by an acid hydrolysis assisted by sonochemistry in order to reduce reaction times. The cavitation inducted during hydrolysis resulted in CNC with uniform shapes, and thus further pretreatments into the cellulose are not required. The obtained CNC exhibited a homogeneous morphology and high crystallinity, as well as typical values for surface charge. Additionally, CNC membranes were developed from CNC solution to evaluation as a drug delivery system by the incorporation of a model drug...
December 12, 2016: Materials
https://www.readbyqxmd.com/read/28773145/development-and-characterization-of-polymer-eco-composites-based-on-natural-rubber-reinforced-with-natural-fibers
#12
Maria-Daniela Stelescu, Elena Manaila, Gabriela Craciun, Corina Chirila
Natural rubber composites filled with short natural fibers (flax and sawdust) were prepared by blending procedure and the elastomer cross-linking was carried out using benzoyl peroxide. The microbial degradation of composites was carried out by incubating with Aspergillus niger recognized for the ability to grow and degrade a broad range of substrates. The extent of biodegradation was evaluated by weight loss and cross-linking degree study of composites after 2 months incubation in pure shake culture conditions...
July 11, 2017: Materials
https://www.readbyqxmd.com/read/28772871/composite-materials-based-on-hemp-and-flax-for-low-energy-buildings
#13
Przemysław Brzyski, Danuta Barnat-Hunek, Zbigniew Suchorab, Grzegorz Łagód
The article presents the results obtained in the course of a study on prospective application of flax/hemp wastes as a filling material of lime-based composites in the construction of low-energy buildings. The utilized filler comprised the hydrated lime with clay and Portland cement used as additives. The analysis involved evaluation of such properties as porosity, density, thermal conductivity, absorptivity, permeability, as well as compressive and flexural strength. Depending on the quantity of the filler, the properties of the composite changed...
May 7, 2017: Materials
https://www.readbyqxmd.com/read/28772755/creep-behavior-of-poly-lactic-acid-based-biocomposites
#14
Marco Morreale, Maria Chiara Mistretta, Vincenzo Fiore
Polymer composites containing natural fibers are receiving growing attention as possible alternatives for composites containing synthetic fibers. The use of biodegradable matrices obtained from renewable sources in replacement for synthetic ones is also increasing. However, only limited information is available about the creep behavior of the obtained composites. In this work, the tensile creep behavior of PLA based composites, containing flax and jute twill weave woven fabrics, produced through compression molding, was investigated...
April 8, 2017: Materials
https://www.readbyqxmd.com/read/28772573/tensile-and-flexural-properties-of-cement-composites-reinforced-with-flax-nonwoven-fabrics
#15
Josep Claramunt, Heura Ventura, Lucía J Fernández-Carrasco, Mònica Ardanuy
The aim of this study is to develop a process to produce high-performance cement-based composites reinforced with flax nonwoven fabrics, analyzing the influence of the fabric structure-thickness and entanglement-on mechanical behavior under flexural and tensile loadings. For this purpose, composite with flax nonwoven fabrics with different thicknesses were first prepared and their cement infiltration was evaluated with backscattered electron (BSE) images. The nonwoven fabrics with the optimized thickness were then subjected to a water treatment to improve their stability to humid environments and the fiber-matrix adhesion...
February 22, 2017: Materials
https://www.readbyqxmd.com/read/28735182/fluidized-bed-fenton-coupled-with-ceramic-membrane-separation-for-advanced-treatment-of-flax-wastewater
#16
Dong Fan, Lili Ding, Hui Huang, Mengtian Chen, Hongqiang Ren
Fluidized-bed Fenton coupled with ceramic membrane separation to treat the flax secondary effluent was investigated. The operating variables, including initial pH, dosage of H2O2 and Fe(0), air flow rate, TMP and pore size, were optimized. The distributions of DOMs in the treatment process were analyzed. Under the optimum condition (600mgL(-1)H2O2, 1.4gL(-1) Fe(0), pH=3, 300Lh(-1) air flow rate and 15psi TMP), the highest TOC and color removal efficiencies were 84% and 94% in the coupled reactor with 100nm ceramic membrane, reducing 39% of total iron with similar removal efficiency compared with Fluidized-bed Fenton...
May 31, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28706005/a-cell-wall-proteome-and-targeted-cell-wall-analyses-provide-novel-information-on-hemicellulose-metabolism-in-flax
#17
Malika Chabi, Estelle Goulas, Celine C Leclercq, Isabelle de Waele, Christophe Rihouey, Ugo Cenci, Arnaud Day, Anne-Sophie Blervacq, Godfrey Neutelings, Ludovic Duponchel, Patrice Lerouge, Jean-François Hausman, Jenny Renaut, Simon Hawkins
Experimentally-generated (nanoLC-MS/MS) proteomic analyses of four different flax organs/tissues (inner-stem, outer-stem, leaves and roots) enriched in proteins from 3 different sub-compartments (soluble-, membrane-, and cell wall-proteins) was combined with publically available data on flax seed and whole-stem proteins to generate a flax protein database containing 2996 nonredundant total proteins. Subsequent multiple analyses (MapMan, CAZy, WallProtDB and expert curation) of this database were then used to identify a flax cell wall proteome consisting of 456 nonredundant proteins localized in the cell wall and/or associated with cell wall biosynthesis, remodeling and other cell wall related processes...
September 2017: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/28705193/spatial-regulation-of-monolignol-biosynthesis-and-laccase-genes-control-developmental-and-stress-related-lignin-in-flax
#18
Julien Le Roy, Anne-Sophie Blervacq, Anne Créach, Brigitte Huss, Simon Hawkins, Godfrey Neutelings
BACKGROUND: Bast fibres are characterized by very thick secondary cell walls containing high amounts of cellulose and low lignin contents in contrast to the heavily lignified cell walls typically found in the xylem tissues. To improve the quality of the fiber-based products in the future, a thorough understanding of the main cell wall polymer biosynthetic pathways is required. In this study we have carried out a characterization of the genes involved in lignin biosynthesis in flax along with some of their regulation mechanisms...
July 14, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/28694533/if-you-pluck-out-the-heart-of-the-flax-bush-from-whence-will-the-bellbird-sing
#19
EDITORIAL
Marewa Glover, Christina Severinsen, Suzanne Phibbs
No abstract text is available yet for this article.
July 7, 2017: New Zealand Medical Journal
https://www.readbyqxmd.com/read/28694530/transcriptomic-profiling-of-hemp-bast-fibres-at-different-developmental-stages
#20
Gea Guerriero, Marc Behr, Sylvain Legay, Lauralie Mangeot-Peter, Simone Zorzan, Mohammad Ghoniem, Jean-Francois Hausman
Bast fibres are long extraxylary cells which mechanically support the phloem and they are divided into xylan- and gelatinous-type, depending on the composition of their secondary cell walls. The former, typical of jute/kenaf bast fibres, are characterized by the presence of xylan and a high degree of lignification, while the latter, found in tension wood, as well as flax, ramie and hemp bast fibres, have a high abundance of crystalline cellulose. During their differentiation, bast fibres undergo specific developmental stages: the cells initially elongate rapidly by intrusive growth, subsequently they cease elongation and start to thicken...
July 10, 2017: Scientific Reports
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