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https://www.readbyqxmd.com/read/28644849/rapid-development-of-cyanobacterial-crust-in-the-field-for-combating-desertification
#1
Chan-Ho Park, Xin Rong Li, Yang Zhao, Rong Liang Jia, Jae-Seoun Hur
Desertification is currently a major concern, and vast regions have already been devastated in the arid zones of many countries. Combined application of cyanobacteria with soil fixing chemicals is a novel method of restoring desertified areas. Three cyanobacteria, Nostoc sp. Vaucher ex Bornet & Flahault, Phormidium sp. Kützing ex Gomont and Scytonema arcangeli Bornet ex Flahault were isolated and tested in this study. Tacki-SprayTM (TKS7), which consists of bio-polysaccharides and tackifiers, was used as a soil fixing agent...
2017: PloS One
https://www.readbyqxmd.com/read/28644743/sarcocystis-jamaicensis-n-sp-from-red-tailed-hawks-buteo-jamaicensis-definitive-host-and-ifn-%C3%AE-gene-knockout-mice-as-experimental-intermediate-host
#2
Shiv Verma, Alexa Rosypal Von Dohlen, J Mowery, D Scott, B Rosenthal, J P Dubey, David Lindsay
Here, we report a new species of Sarcocystis with red-tailed hawk (RTH) as the natural definitive host and IFN-γ gene knockout (KO) mice as an experimental intermediate host in which sarcocysts form in muscle. Two RTHs submitted to the Carolina Raptor Center, Huntersville, North Carolina, were euthanized because they could not be rehabilitated and released. Fully sporulated 12.5 x 9.9 m sized sporocysts were found in intestinal scrapings of both hawks. Sporocysts were orally fed to laboratory-reared outbred Swiss Webster mice (SW) (Mus musculus) and also to KO mice...
June 23, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28644627/rhodium-iii-catalyzed-acylation-of-c-sp-3-h-bonds-with-cyclopropenones
#3
Lingheng Kong, Xukai Zhou, Youwei Xu, Xingwei Li
Rh(III)-catalyzed activation and acylation of sp(3) C-H bonds has been realized with diarylcyclopropenone as an acylating reagent. Both benzylic C-H in 8-methylquinolines and unactivated C-H in 2-alkylpyridines are applicable in this C-H acylation reaction, providing enones in good yields under redox-neutral conditions.
June 23, 2017: Organic Letters
https://www.readbyqxmd.com/read/28644384/characterisation-of-the-chemical-composition-and-structural-features-of-novel-antimicrobial-nanoparticles
#4
Yuen-Ki Cheong, Jesus Calvo-Castro, Lena Ciric, Mohan Edirisinghe, Elaine Cloutman-Green, Upulitha Eranka Illangakoon, Qiang Kang, Suntharavathanan Mahalingam, Rupy Kaur Matharu, Rory M Wilson, Guogang Ren
Three antimicrobial nanoparticle types (AMNP0, AMNP1, and AMNP2) produced using the Tesima(TM) thermal plasma technology were investigated and their compositions were determined using a combination of analytical methods. Scanning electron micrographs provided the morphology of these particles with observed sizes ranging from 10 to 50 nm, whilst FTIR spectra confirmed the absence of polar bonds and organic impurities, and strong Raman active vibrational bands at ca. 1604 and 1311 cm(-1) ascribed to C-C vibrational motions were observed...
June 23, 2017: Nanomaterials
https://www.readbyqxmd.com/read/28644063/morphological-and-molecular-characterization-of-metacercaria-of-tylodelphys-digenea-diplostomidae-from-the-piscine-host-mystus-tengara-from-india
#5
Anshu Chaudhary, Shivi Gupta, Chandni Verma, Richa Tripathi, Hridaya Shanker Singh
The diversity and taxonomy of diplostomids infecting freshwater fishes of the Indian region are predominantly poorly known. Yet compared to other trematodes, identification and discrimination of diplostomid metacercaria are difficult using morphology and site of infection. The present study provides the first molecular study of Tylodelphys sp. from India. Specimens of Tylodelphys were collected from the vitreous humor of the eyes and from the brains of siluriform fish, Mystus tengara (Siluriformes: Bagridae) from Hastinapur, Meerut (U...
June 23, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28643360/a-new-wrinkle-in-oligoarylene-architecture
#6
Graham J Bodwell
Bowl me over! A breathtaking bowl-shaped oligoarylene has been created. The structure is analogous to that of corranulene, but instead of twenty sp(2) -hybridized carbon atoms, the new nanometer-sized molecule has been constructed using twenty 1,3,5-trisubstituted benzene rings.
June 23, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28643349/a-qm-mm-study-of-the-catalytic-mechanism-of-sam-methyltransferase-rlmn-from-escherichia-coli
#7
Chenxiao Zhao, Lihua Dong, Yongjun Liu
RlmN is a radical S-adenosylmethionine (SAM) enzyme that catalyzes the C2 methylation of adenosine 2503 (A2503) in 23S rRNA and adenosine 37 (A37) in several Escherichia coli transfer RNAs (tRNA). The catalytic reaction of RlmN is distinctly different from that of typical SAM-dependent methyltransferases that employs an SN 2 mechanism, but follows a ping-pong mechanism which involves the intermediate methylation of a conserved cysteine residue. Recently, the x-ray structure of a key intermediate in the RlmN reaction has been reported, allowing us to perform combined quantum mechanics and molecular mechanics (QM/MM) calculations to delineate the reaction details of RlmN at atomic level...
June 23, 2017: Proteins
https://www.readbyqxmd.com/read/28643122/symbiotic-performance-and-induction-of-systemic-resistance-against-cercospora-sojina-in-soybean-plants-co-inoculated-with-bacillus-sp-chep5-and-bradyrhizobium-japonicum-e109
#8
María Laura Tonelli, C Magallanes-Noguera, A Fabra
Soybean is an economically very important crop throughout the word and particularly in Argentina. Soybean yield may be affected by many factors such as the lack of some essential nutrients or pathogens attack. In this work we demonstrated that the co-inoculation of the native biocontrol bacterium Bacillus sp. CHEP5 which induces resistance against Cercospora sojina in soybean and the nitrogen fixing strain Bradyrhizobium japonicum E109, was more effective in reducing frog leaf spot severity than the inoculation of the biocontrol agent alone...
June 22, 2017: Archives of Microbiology
https://www.readbyqxmd.com/read/28642992/plasmid-mediated-quinolone-resistance-pmqr-genes-and-class-1-integrons-in-quinolone-resistant-marine-bacteria-and-clinical-isolates-of-escherichia-coli-from-an-aquacultural-area
#9
Alexandra Tomova, Larisa Ivanova, Alejandro H Buschmann, Henry P Godfrey, Felipe C Cabello
Antimicrobial usage in aquaculture selects for antimicrobial-resistant microorganisms in the marine environment. The relevance of this selection to terrestrial animal and human health is unclear. Quinolone-resistance genes qnrA, qnrB, and qnrS were chromosomally located in four randomly chosen quinolone-resistant marine bacteria isolated from an aquacultural area with heavy quinolone usage. In quinolone-resistant uropathogenic clinical isolates of Escherichia coli from a coastal area bordering the same aquacultural region, qnrA was chromosomally located in two E...
June 23, 2017: Microbial Ecology
https://www.readbyqxmd.com/read/28642986/viridiuvalis-adhaerens-gen-et-sp-nov-a-novel-colony-forming-chlorarachniophyte
#10
Takashi Shiratori, Sakuya Fujita, Tenma Shimizu, Takeshi Nakayama, Ken-Ichiro Ishida
A new chlorarachniophyte, Viridiuvalis adhaerens gen. et sp. nov. was isolated from the mucus on a coral reef from Zanpa Beach, Okinawa, Japan. The main vegetative stage of V. adhaerens consisted of unicellular coccoid cells with cell walls, although sarcinoid colonies and uniflagellate zoospores were also observed. V. adhaerens had chloroplasts with nucleomorphs and pyrenoids that were completely embedded in the chloroplast. A deep plate-like invagination of the periplastidal compartment (PPC) almost partitioned the pyrenoid and chloroplast components, which were surrounded by two membranes...
June 22, 2017: Journal of Plant Research
https://www.readbyqxmd.com/read/28642968/enhancing-the-enzymatic-saccharification-of-bamboo-shoot-shell-by-sequential-biological-pretreatment-with-galactomyces-sp-cczu11-1-and-deep-eutectic-solvent-extraction
#11
Yong Dai, Hai-Sheng Zhang, Bin Huan, Yucai He
In this study, sequential biological pretreatment (BP) with Galactomyces sp. CCZU11-1 at 30 °C for 3 days and deep eutectic solvent (DES) choline chloride: oxalic acid (ChCl:OA, 1 mol/2 mol) extraction at 120 °C for 1.5 h was used for pretreating BSS. It was found that combination pretreatment could effectively remove xylan and lignin for enhancing enzymatic saccharification. The reducing sugars and glucose from the hydrolysis of 100 g/L pretreated BSS with complexed cellulases of Galactomyces sp. CCZU11-1 were obtained in the yields of 81...
June 22, 2017: Bioprocess and Biosystems Engineering
https://www.readbyqxmd.com/read/28642771/transcriptomic-analysis-of-avocado-hass-persea-americana-mill-in-the-interaction-system-fruit-chitosan-colletotrichum
#12
Luis-Ángel Xoca-Orozco, Esther Angélica Cuellar-Torres, Sandra González-Morales, Porfirio Gutiérrez-Martínez, Ulises López-García, Luis Herrera-Estrella, Julio Vega-Arreguín, Alejandra Chacón-López
Avocado (Persea americana) is one of the most important crops in Mexico as it is the main producer, consumer, and exporter of avocado fruit in the world. However, successful avocado commercialization is often reduced by large postharvest losses due to Colletotrichum sp., the causal agent of anthracnose. Chitosan is known to have a direct antifungal effect and acts also as an elicitor capable of stimulating a defense response in plants. However, there is little information regarding the genes that are either activated or repressed in fruits treated with chitosan...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28642435/a-catalytic-fluoride-rebound-mechanism-for-c-sp-3-cf3-bond-formation
#13
Mark D Levin, Tiffany Q Chen, Megan E Neubig, Cynthia M Hong, Cyril A Theulier, Ilia J Kobylianskii, Mustafa Janabi, James P O'Neil, F Dean Toste
The biological properties of trifluoromethyl compounds have led to their ubiquity in pharmaceuticals, yet their chemical properties have made their preparation a substantial challenge, necessitating innovative chemical solutions. We report the serendipitous discovery of a borane-catalyzed formal C(sp(3))-CF3 reductive elimination from Au(III) that accesses these compounds by a distinct mechanism proceeding via fluoride abstraction, migratory insertion, and C-F reductive elimination to achieve a net C-C bond construction...
June 23, 2017: Science
https://www.readbyqxmd.com/read/28642378/new-genome-sequence-of-an-echinaceapurpurea-endophyte-arthrobacter-sp-strain-epsl27-able-to-inhibit-human-opportunistic-pathogens
#14
Elisangela Miceli, Luana Presta, Valentina Maggini, Marco Fondi, Emanuele Bosi, Carolina Chiellini, Camilla Fagorzi, Patrizia Bogani, Vincenzo Di Pilato, Gian Maria Rossolini, Alessio Mengoni, Fabio Firenzuoli, Elena Perrin, Renato Fani
We announce here the draft genome sequence of Arthrobacter sp. strain EpSL27, isolated from the stem and leaves of the medicinal plant Echinacea purpurea and able to inhibit human-pathogenic bacterial strains. The genome sequencing of this strain may lead to the identification of genes involved in the production of antimicrobial molecules.
June 22, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28642376/draft-genome-sequence-of-bacillus-sp-strain-cdb3-an-arsenic-resistant-soil-bacterium-isolated-from-cattle-dip-sites
#15
Yiren Yang, Ren Zhang
Bacillus sp. strain CDB3, isolated from cattle dip sites in Australia, is highly resistant to arsenic. It contains 22 arsenic resistance (ars) genes, of which 17 are organized in 3 ars clusters. Here, we report the draft genome sequence of CDB3, which will assist us in understanding the overall ars mechanism.
June 22, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28641883/petroleum-oil-removal-by-immobilized-bacterial-cells-on-polyurethane-foam-under-different-temperature-conditions
#16
Mauricio J Alessandrello, María S Juárez Tomás, Enzo E Raimondo, Diana L Vullo, Marcela A Ferrero
In this work, a mixed biofilm composed by Pseudomonas monteilii P26 and Gordonia sp. H19 was formed using polyurethane foam (PUF) as immobilization support, for crude oil removal from artificial sea water. Fresh immobilized cells and immobilized cells that were stored at 4°C for two months before use were assessed. The oil removal assays were carried out at microcosm scale at 4, 15 and 30°C. A viability loss of P. monteilii P26 was observed after the storage. The highest removal value (75%) was obtained at 30°C after 7days using fresh immobilized cells on PUF...
June 19, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28641818/the-role-of-kr%C3%A3-ppel-like-factor-14-in-the-pathogenesis-of-atherosclerosis
#17
REVIEW
Wei Xie, Liang Li, Xi-Long Zheng, Wei-Dong Yin, Chao-Ke Tang
The Krüppel-like factor (KLF) family, as the SP/XKLF transcription factors, plays important roles in regulating the expression of genes required for the proper execution of important biological and pathological processes. Recent studies have demonstrated that KLF14, a member of the KLF family, participates in the initiation and progression of atherosclerotic cardiovascular disease (CVD). From the molecular function aspect, this review focuses on the impact of KLF14-mediated regulation in major atherosclerosis-related diseases and pathological processes, such as insulin resistance, type 2 diabetes, dyslipidemia, inflammation, obesity, metabolic syndrome, cell proliferation and differentiation...
June 7, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28641719/surfactant-protein-d-inhibits-interleukin-12p40-production-by-macrophages-through-the-sirp%C3%AE-rock-erk-signaling-pathway
#18
Rui Yamaguchi, Arisa Sakamoto, Takatoshi Yamamoto, Yasuji Ishimaru, Shinji Narahara, Hiroyuki Sugiuchi, Yasuo Yamaguchi
OBJECTIVE: Interleukin (IL)-12 has a pivotal profibrotic role in the development of idiopathic pulmonary fibrosis (IPF). Medical research trials based on IPF registry databases have actively recruited patients. Surfactant protein D (SP-D) is a useful biomarker in patients with IPF. SP-D binds to signal regulatory protein α (SIRPα), which acts as an inhibitory receptor, and this SP-D/SIRPα interaction may have an anti-inflammatory effect. Accordingly, the inhibitory effect of SP-D on IL-12p40 production by lipopolysaccharide (LPS)-stimulated macrophages was investigated...
June 2017: American Journal of the Medical Sciences
https://www.readbyqxmd.com/read/28641481/septicaemia-caused-by-elizabethkingia-sp-in-a-healthy-sri-lankan-man
#19
Benedict S Sebastiampillai, Nathasha V Luke, Shehan Silva, Shamila T De Silva, Ranjan Premaratna
No abstract text is available yet for this article.
January 1, 2017: Tropical Doctor
https://www.readbyqxmd.com/read/28641457/antiglioma-pseurotin-a-from-marine-bacillus-sp-fs8d-regulating-tumour-metabolic-enzymes
#20
Komal Anjum, Hongyun Bi, Weiyun Chai, Xiao-Yuan Lian, Zhizhen Zhang
Pseurotin A was isolated from a culture of marine Bacillus sp. FS8D and showed to be active against the proliferation of four different glioma cells with IC50 values of 0.51-29.3 μM. It has been found that pseurotin A downregulated the expression of tumour glycolytic enzymes pyruvate kinase M2 (PKM2) and lactate dehydrogenase 5 (LDH5) and upregulated the expression of pyruvate dehydrogenase beta (PDHB), adenosine triphosphate synthase beta (ATPB) and cytochrome C (Cyto-C), the important regulators for tricarboxylic acid cycle and oxidative phosphorylation...
June 23, 2017: Natural Product Research
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