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https://www.readbyqxmd.com/read/28346909/bioaugmentaton-in-technosols-created-in-abandoned-pyritic-tailings-can-contribute-to-enhance-soil-c-sequestration-and-plant-colonization
#1
Raúl Zornoza, Melisa Gómez-Garrido, Silvia Martínez-Martínez, María Dolores Gómez-López, Ángel Faz
Creation of Technosols in combination with phytostabilization may be a sustainable strategy to minimize the environmental and human health hazards derived from mine tailings. Bioaugmentation can facilitate plant establishment and growth for efficient phytostabilization. In order to assess if bioaugmentation can increase soil quality and fertility, decrease metal(loid) mobility and accelerate plant colonization, a one-year field experiment was designed with creation of Technosols in two tailings ponds with different pH (acidic (AT) and neutral (NT)), with addition of marble waste (MaW) and two organic materials (pig manure (PM) and sewage sludge (SS), without or with inoculation of effective microorganisms (EM) at three rates...
March 24, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28346463/changes-in-soil-bacterial-community-structure-as-a-result-of-incorporation-of-brassica-plants-compared-with-continuous-planting-eggplant-and-chemical-disinfection-in-greenhouses
#2
Tianzhu Li, Tongtong Liu, Chengyu Zheng, Chunsheng Kang, Zichao Yang, Xiaotong Yao, Fengbin Song, Runzhi Zhang, Xuerong Wang, Ning Xu, Chunyi Zhang, Wei Li, Shumin Li
Greenhouse eggplant monocropping in China has contributed to the aggravation of soil-borne diseases, reductions in crop quality and yield, and the degradation of physical and chemical soil properties. Crop rotation is one effective way of alleviating the problems of continuous cropping worldwide; however, few studies have reported changes in soil bacterial community structures and physical and chemical soil properties after Brassica vegetables had been rotated with eggplant in greenhouses. In this experiment, mustard-eggplant (BFN) and oilseed rape-eggplant (BFC) rotations were studied to identify changes in the physicochemical properties and bacterial community structure in soil that was previously subject to monocropping...
2017: PloS One
https://www.readbyqxmd.com/read/28346448/a-footprint-of-desiccation-tolerance-in-the-genome-of-xerophyta-viscosa
#3
Maria-Cecília D Costa, Mariana A S Artur, Julio Maia, Eef Jonkheer, Martijn F L Derks, Harm Nijveen, Brett Williams, Sagadevan G Mundree, José M Jiménez-Gómez, Thamara Hesselink, Elio G W M Schijlen, Wilco Ligterink, Melvin J Oliver, Jill M Farrant, Henk W M Hilhorst
Desiccation tolerance is common in seeds and various other organisms, but only a few angiosperm species possess vegetative desiccation tolerance. These 'resurrection species' may serve as ideal models for the ultimate design of crops with enhanced drought tolerance. To understand the molecular and genetic mechanisms enabling vegetative desiccation tolerance, we produced a high-quality whole-genome sequence for the resurrection plant Xerophyta viscosa and assessed transcriptome changes during its dehydration...
March 27, 2017: Nature Plants
https://www.readbyqxmd.com/read/28346399/endothelial-cell-specific-activation-of-transforming-growth-factor-%C3%AE-signaling-in-mice-induces-cutaneous-visceral-and-microvascular-fibrosis
#4
Peter J Wermuth, Kellan R Carney, Fabian A Mendoza, Sonsoles Piera-Velazquez, Sergio A Jimenez
In this study, we tested the hypothesis that constitutive endothelial cell-specific activation of TGF-β signaling induces tissue fibrosis and vasculopathy resembling the characteristic fibrotic and vascular alterations of systemic sclerosis. Transgenic mice with inducible expression of a constitutively active TGF-β receptor I specifically in endothelial cells were generated by intercrossing mice harboring a constitutively active TGF-β receptor I with a mouse strain containing the endothelial cell-specific Cdh5 gene promoter directing the tamoxifen-inducible expression of the Cre-ER(T2) cassette...
March 27, 2017: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/28346348/vitamin-d-in-chronic-kidney-disease-and-dialysis-patients
#5
REVIEW
Guillaume Jean, Jean Claude Souberbielle, Charles Chazot
Vitamin D deficiency (<20 ng/mL) and insufficiency (20-29 ng/mL) are common among patients with chronic kidney disease (CKD) or undergoing dialysis. In addition to nutritional and sunlight exposure deficits, factors that affect vitamin D deficiency include race, sex, age, obesity and impaired vitamin D synthesis and metabolism. Serum 1,25(OH)₂D levels also decrease progressively because of 25(OH)D deficiency, together with impaired availability of 25(OH)D by renal proximal tubular cells, high fibroblast growth factor (FGF)-23 and decreased functional renal tissue...
March 25, 2017: Nutrients
https://www.readbyqxmd.com/read/28346218/wafer-scale-production-of-highly-uniform-two-dimensional-mos2-by-metal-organic-chemical-vapor-deposition
#6
TaeWan Kim, Jihun Mun, Hyeji Park, DaeHwa Joung, Mangesh Diware, Won Chegal, Jonghoo Park, Soo-Hwan Jeong, Sang-Woo Kang
Semiconducting two-dimensional (2D) materials, particularly, extremely thin molybdenum disulfide (MoS2) films are attracting considerable attention from the academia and industry owing to their distinctive optical and electrical properties. Here, we present the direct growth of a MoS2 monolayer with unprecedented spatial and structural uniformity across an entire 8-inch SiO2/Si wafer. The influences of growth pressure, ambient gases (Ar, H2), and S/Mo molar flow ratio on the MoS2 layered growth were explored by considering the domain size, nucleation sites, morphology, and impurity incorporation...
March 27, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28346136/environment-determines-evolutionary-trajectory-in-a-constrained-phenotypic-space
#7
David T Fraebel, Harry Mickalide, Diane Schnitkey, Jason Merritt, Thomas E Kuhlman, Seppe Kuehn
Constraints on phenotypic variation limit the capacity of organisms to adapt to the multiple selection pressures encountered in natural environments. To better understand evolutionary dynamics in this context, we select Escherichia coli for faster migration through a porous environment, a process which depends on both motility and growth. We find that a trade-off between swimming speed and growth rate constrains the evolution of faster migration. Evolving faster migration in rich medium results in slow growth and fast swimming, while evolution in minimal medium results in fast growth and slow swimming...
March 27, 2017: ELife
https://www.readbyqxmd.com/read/28345864/triple-stage-mass-spectrometry-unravels-the-heterogeneity-of-an-endogenous-protein-complex
#8
Gili Ben-Nissan, Mikhail E Belov, David Morgenstern, Yishai Levin, Orly Dym, Galina Arkind, Carni Lipson, Alexander A Makarov, Michal Sharon
The way we perceive protein complexes is changing. What were once thought to be uniform entities may actually represent an ensemble of different assemblies with distinct functions and regulation. This increased complexity is enabled by the variety of protein diversification mechanisms that exist at every step of the protein biosynthesis pathway, such as alternative splicing and post transcriptional and translational modifications. The resulting variation in subunits can generate compositionally distinct protein assemblies...
March 27, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28345658/nephronectin-plays-critical-roles-in-sox2-expression-and-proliferation-in-dental-epithelial-stem-cells-via-egf-like-repeat-domains
#9
Chieko Arai, Keigo Yoshizaki, Kanako Miyazaki, Kan Saito, Aya Yamada, Xue Han, Keita Funada, Emiko Fukumoto, Naoto Haruyama, Tsutomu Iwamoto, Ichiro Takahashi, Satoshi Fukumoto
Tooth development is initiated by epithelial-mesenchymal interactions via basement membrane (BM) and growth factors. In the present study, we found that nephronectin (Npnt), a component of the BM, is highly expressed in the developing tooth. Npnt localizes in the BM on the buccal side of the tooth germ and shows an expression pattern opposite that of the dental epithelial stem cell marker Sox2. To identify the roles of Npnt during tooth development, we performed knockdown and overexpression experiments using ex vivo organ and dental epithelial cell cultures...
March 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28345641/iii-nitride-core-shell-nanorod-array-on-quartz-substrates
#10
Si-Young Bae, Jung-Wook Min, Hyeong-Yong Hwang, Kaddour Lekhal, Ho-Jun Lee, Young-Dahl Jho, Dong-Seon Lee, Yong-Tak Lee, Nobuyuki Ikarashi, Yoshio Honda, Hiroshi Amano
We report the fabrication of near-vertically elongated GaN nanorods on quartz substrates. To control the preferred orientation and length of individual GaN nanorods, we combined molecular beam epitaxy (MBE) with pulsed-mode metal-organic chemical vapor deposition (MOCVD). The MBE-grown buffer layer was composed of GaN nanograins exhibiting an ordered surface and preferred orientation along the surface normal direction. Position-controlled growth of the GaN nanorods was achieved by selective-area growth using MOCVD...
March 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28345457/special-at-rich-sequence-binding-protein-1-promotes-tumor-growth-and-metastasis-of-esophageal-squamous-cell-carcinoma
#11
Jun Ma, Kaiming Wu, Zhenxian Zhao, Rong Miao, Zhe Xu
Esophageal squamous cell carcinoma is one of the most aggressive malignancies worldwide. Special AT-rich sequence binding protein 1 is a nuclear matrix attachment region binding protein which participates in higher order chromatin organization and tissue-specific gene expression. However, the role of special AT-rich sequence binding protein 1 in esophageal squamous cell carcinoma remains unknown. In this study, western blot and quantitative real-time polymerase chain reaction analysis were performed to identify differentially expressed special AT-rich sequence binding protein 1 in a series of esophageal squamous cell carcinoma tissue samples...
March 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28345204/insight-into-ion-transfer-through-the-sub-nanometer-channels-in-zeolitic-imidazolate-frameworks
#12
Ze-Yu Jiang, Hai-Ling Liu, Saud Asif Ahmed, Sumaira Hanif, Shi-Bin Ren, Jing-Juan Xu, Hong-Yuan Chen, Xing-Hua Xia, Kang Wang
A crack-free sub-nanometer composite structure for the study of ion transfer was constructed by in situ growth of ZIF-90 [Zn(ICA)2 , ICA=Imidazole-2-carboxaldehyde] on the tip of a glass nanopipette. The potential-driven ion transfer through the sub-nanometer channels in ZIF-90 is strongly influenced by the pH of the solution. A rectification ratio over 500 is observed in 1 m KCl solution under alkaline conditions (pH 11.58), which is the highest value reported under such a high salt concentration. Fluorescence experiments show the super-high rectification ratio under alkaline conditions results from the strong electrostatic interaction between ions and the sub-nanometer channels of ZIF-90...
March 27, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28344645/mimicking-lichens-incorporation-of-yeast-strains-together-with-sucrose-secreting-cyanobacteria-improves-survival-growth-ros-removal-and-lipid-production-in-a-stable-mutualistic-co-culture-production-platform
#13
Tingting Li, Chien-Ting Li, Kirk Butler, Stephanie G Hays, Michael T Guarnieri, George A Oyler, Michael J Betenbaugh
BACKGROUND: The feasibility of heterotrophic-phototrophic symbioses was tested via pairing of yeast strains Cryptococcus curvatus, Rhodotorula glutinis, or Saccharomyces cerevisiae with a sucrose-secreting cyanobacterium Synechococcus elongatus. RESULTS: The phototroph S. elongatus showed no growth in standard BG-11 medium with yeast extract, but grew well in BG-11 medium alone or supplemented with yeast nitrogen base without amino acids (YNB w/o aa). Among three yeast species, C...
2017: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/28344574/health-associated-niche-inhabitants-as-oral-probiotics-the-case-of-streptococcus-dentisani
#14
Arantxa López-López, Anny Camelo-Castillo, María D Ferrer, Áurea Simon-Soro, Alex Mira
Oral diseases, including dental caries and periodontitis, are among the most prevalent diseases worldwide and develop as a consequence of a microbial dysbiosis. Several bacterial strains are being tested as potential oral health-promoting organisms, but usually they are species isolated from niches other than the site where they must exert its probiotic action, typically from fecal samples. We hypothesize that oral inhabitants associated to health conditions will be more effective than traditional, gut-associated probiotic species in key aspects such as colonization of the oral site where disease takes place or the possession of oral health promoting functions, as well as more practical issues like safety and toxicity, and establishing proper doses for administration...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28344573/submarine-basaltic-glass-colonization-by-the-heterotrophic-fe-ii-oxidizing-and-siderophore-producing-deep-sea-bacterium-pseudomonas-stutzeri-vs-10-the-potential-role-of-basalt-in-enhancing-growth
#15
Lisa A Sudek, Greg Wanger, Alexis S Templeton, Hubert Staudigel, Bradley M Tebo
Phylogenetically and metabolically diverse bacterial communities have been found in association with submarine basaltic glass surfaces. The driving forces behind basalt colonization are for the most part unknown. It remains ambiguous if basalt provides ecological advantages beyond representing a substrate for surface colonization, such as supplying nutrients and/or energy. Pseudomonas stutzeri VS-10, a metabolically versatile bacterium isolated from Vailulu'u Seamount, was used as a model organism to investigate the physiological responses observed when biofilms are established on basaltic glasses...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28344571/translation-initiation-factor-eif4e-and-eifiso4e-are-both-required-for-peanut-stripe-virus-infection-in-peanut-arachis-hypogaea-l
#16
Manlin Xu, Hongfeng Xie, Juxiang Wu, Lianhui Xie, Jinguang Yang, Yucheng Chi
Peanut stripe virus (PStV) belongs to the genus Potyvirus and is the most important viral pathogen of cultivated peanut (Arachis hypogaea L.). The eukaryotic translation initiation factor, eIF4E, and its isoform, eIF(iso)4E, play key roles during virus infection in plants, particularly Potyvirus. In the present study, we cloned the eIF4E and eIF(iso)4E homologs in peanut and named these as PeaeIF4E and PeaeIF(iso)4E, respectively. Quantitative real-time PCR (qRT-PCR) analysis showed that these two genes were expressed during all growth periods and in all peanut organs, but were especially abundant in young leaves and roots...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28344570/tanycytes-as-regulators-of-seasonal-cycles-in-neuroendocrine-function
#17
REVIEW
Jo E Lewis, Francis J P Ebling
Annual cycles of physiology and behavior are highly prevalent in organisms inhabiting temperate and polar regions. Examples in mammals include changes in appetite and body fat composition, hibernation and torpor, growth of antlers, pelage and horns, and seasonal reproduction. The timing of these seasonal cycles reflects an interaction of changing environmental signals, such as daylength, and intrinsic rhythmic processes: circannual clocks. As neuroendocrine signals underlie these rhythmic processes, the focus of most mechanistic studies has been on neuronal systems in the hypothalamus...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28344411/effect-of-ethanolic-extract-of-propolis-as-an-alternative-to-antibiotics-as-a-growth-promoter-on-broiler-performance-serum-biochemistry-and-immune-responses
#18
Abbasali Gheisari, Shekofa Shahrvand, Nasir Landy
AIM: An in vivo experiment was conducted to investigate the effect of different levels of ethanolic extract of propolis, on growth performance, carcass traits, serum biochemistry, and humoral immune responses of chickens, as compared with the antibiotic flavophospholipol. MATERIALS AND METHODS: 312 1-day-old as-hatched broiler chicks (Ross 308) were randomly allotted to 6 treatments with 4 replicate pens per treatment. The 6 dietary treatments fed for 42 days consisted of a corn-soybean meal basal diet (control); control plus 4...
February 2017: Veterinary World
https://www.readbyqxmd.com/read/28344406/attribution-of-antibacterial-and-antioxidant-activity-of-cassia-tora-extract-toward-its-growth-promoting-effect-in-broiler-birds
#19
Jyoti Sahu, K M Koley, B D Sahu
AIM: The study was conducted to evaluate the attribution of antibacterial and antioxidant activity of methanolic extract of Cassia tora toward its growth promoting effect in broiler birds. MATERIALS AND METHODS: A limit test was conducted for C. tora extract in Wistar albino rats. Phytochemical screening of methanolic extract of leaves of C. tora was carried out. In-vitro antibacterial activity was measured by disc diffusion method. 1-day-old Ven Cobb broiler birds (n=90) were randomly allocated into three groups consisting of three replicates with 10 birds in each group...
February 2017: Veterinary World
https://www.readbyqxmd.com/read/28344348/metal-homeostasis-and-resistance-in-bacteria
#20
REVIEW
Pete Chandrangsu, Christopher Rensing, John D Helmann
Metal ions are essential for many reactions, but excess metals can be toxic. In bacteria, metal limitation activates pathways that are involved in the import and mobilization of metals, whereas excess metals induce efflux and storage. In this Review, we highlight recent insights into metal homeostasis, including protein-based and RNA-based sensors that interact directly with metals or metal-containing cofactors. The resulting transcriptional response to metal stress takes place in a stepwise manner and is reinforced by post-transcriptional regulatory systems...
March 27, 2017: Nature Reviews. Microbiology
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