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https://www.readbyqxmd.com/read/28699576/flavobacterium-olei-sp-nov-a-novel-psychrotolerant-bacterium-isolated-from-oil-contaminated-soil
#1
Dhiraj Kumar Chaudhary, Jaisoo Kim
During a study of psychrophilic hydrocarbon-degrading bacteria, two yellow, Gram-staining-negative, non-motile, and rod shaped bacteria, designated R-10-9T and K-4-2 were isolated from oil-contaminated soil from Ulaanbaatar, Mongolia. Both strains were able to grow at 0-32 °C, pH 5.0-9.5, and 0-1 % (w/v) NaCl concentration. These strains were taxonomically characterized by a polyphasic approach. On the basis of the results of 16S rRNA gene sequence analysis, R-10-9T and K-4-2 belong to the genus Flavobacterium and are closely related to Flavobacterium oncorhynchi 631-08T (97...
July 12, 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28691923/-i-i-in-situ-i-i-self-assembly-of-polarizing-chromogen-nanofibers-catalyzed-with-hybrid-films-of-gold-nanoparticles-and-cellulose
#2
Zhiming Liu, Wenjian Wu
Hybrid materials of metal nanoparticles and biopolymers with catalytic properties are very promising to be used as detectors in biochemical reactions. In this work, the catalytic properties and relevant <i>in-situ</i> self-assembly abilities of hybrid films of gold nanoparticles (GNPs) and cellulose for the oxidation of benign chromogen 3,3',5,5'-tetramethylbenzidine (TMB) with hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) are revealed for the first time. The peroxidase-like properties of hybrid films are inherited from those of colloidal GNPs and increase with their contents of GNPs...
July 10, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28691658/bizionia-sediminis-sp-nov-isolated-from-coastal-sediment
#3
Hui Zhang, Ming-Jing Shi, Hai-Feng Xia, Guan-Jun Chen, Zong-Jun Du
A Gram-stain-negative, aerobic, non-gliding, rod-shaped and orange-coloured bacterium, designated strain P131T, was isolated from marine sediment of the coast of Weihai, China, and subjected to a polyphasic study. Strain P131T was found to grow optimally at 28-30 °C, at pH 7.0-7.5 and in the presence of 2-3 % (w/v) NaCl. In a phylogenetic analysis based on 16S rRNA gene sequences, strain P131T was found to belong to the genus Bizionia and exhibited 94.6-97.0 % 16S rRNA gene sequence similarity with recognized Bizionia species...
July 8, 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28671534/salinarchaeum-chitinilyticum-sp-nov-a-chitin-degrading-haloarchaeon-isolated-from-commercial-salt
#4
Hiroaki Minegishi, Shigeaki Enomoto, Akinobu Echigo, Yasuhiro Shimane, Yusuke Kondo, Ayumi Inoma, Masahiro Kamekura, Ken Takai, Takashi Itoh, Moriya Ohkuma, Kunio Ihara, Naoko Takahashi-Ando, Yasumasa Fukushima, Shigeru Ishii, Yasuhiko Yoshida, Ron Usami
Two chitin-degrading halophilic archaeal strains, MC-74T and MC-23, were isolated from commercial salt samples. Cells were motile, rod-shaped and stained Gram-negative. Colonies were vermillion-pigmented. Strains MC-74T and MC-23 were able to grow with 1.5-5.1 M NaCl (optimum, 2.6-3.1 M) at pH 6.0-10.0 (optimum, pH 7.0) and at 20-50 °C (optimum, 40 °C). The orthologous 16S rRNA gene sequence similarity between the two strains was 99.8 %, and the closest phylogenetic relative was Salinarchaeum laminariae JCM 17267T with 99...
July 3, 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28669141/development-of-a-new-lactic-acid-bacterial-inoculant-for-fresh-rice-straw-silage
#5
Jong Geun Kim, Jun Sang Ham, Yu Wei Li, Hyung Soo Park, Chul-Sung Huh, Byung-Chul Park
OBJECTIVE: Effects of newly isolated Lactobacillus plantarum on the fermentation and chemical composition of fresh rice straw silage was evaluated in this study. METHODS: Lactic acid bacteria (LAB) from good crop silage were screened by growing them in MRS broth and a minimal medium with low carbohydrate content. Selected LAB (LAB 1821) were Gram-positive, rods, catalase negative, and were identified to be Lactobacillus plantarum based on their biochemical characteristics and a 16S rRNA analysis...
July 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28663920/quantitative-interferometric-reflectance-imaging-for-the-detection-and-measurement-of-biological-nanoparticles
#6
Derin Sevenler, Oğuzhan Avci, M Selim Ünlü
The sensitive detection and quantitative measurement of biological nanoparticles such as viruses or exosomes is of growing importance in biology and medicine since these structures are implicated in many biological processes and diseases. Interferometric reflectance imaging is a label-free optical biosensing method which can directly detect individual biological nanoparticles when they are immobilized onto a protein microarray. Previous efforts to infer bio-nanoparticle size and shape have relied on empirical calibration using a 'ruler' of particle samples of known size, which was inconsistent and qualitative...
June 1, 2017: Biomedical Optics Express
https://www.readbyqxmd.com/read/28658035/unplanned-reoperations-in-magnetically-controlled-growing-rod-surgery-for-early-onset-scoliosis-with-a-minimum-of-two-year-follow-up
#7
Kenny Yat Hong Kwan, Ahmet Alanay, Muharrem Yazici, Gokhan Demirkiran, Ilkka Helenius, Colin Nnadi, John Ferguson, Behrooz A Akbarnia, Jason Pui Yin Cheung, Kenneth M C Cheung
STUDY DESIGN: A retrospective review of prospectively collected clinical and radiologic data of patients with magnetically controlled growing rods (MCGR) from a multi-centred study with a minimum of 2 year follow-up. OBJECTIVE: To describe the incidence and causes of unplanned reoperations and to report the outcomes of patients treated with MCGR for early-onset scoliosis (EOS). SUMMARY OF BACKGROUND DATA: Published clinical studies have demonstrated that MCGR is safe and effective for curvature control of EOS, and can avoid repeated surgeries for distractions...
June 27, 2017: Spine
https://www.readbyqxmd.com/read/28651431/a-model-to-estimate-the-sources-of-tobacco-specific-nitrosamines-in-cigarette-smoke
#8
Peter J Lipowicz, Jeffrey Ira Seeman
Tobacco specific nitrosamines (TSNAs) are one of the most extensively and continually studied classes of compounds found in tobacco and cigarette smoke.1-5 The TSNAs N-Nitrosonornicotine (NNN) and 4 (methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK) have been characterized by the US Food and Drug Administration (FDA) as harmful and potentially harmful constituents in tobacco products,6 and cigarette manufacturers report their levels in cigarette tobacco filler and cigarette smoke to the FDA. NNN and NNK are classified by IARC as carcinogenic to humans...
June 27, 2017: Chemical Research in Toxicology
https://www.readbyqxmd.com/read/28649958/modeling-mechanical-interactions-in-growing-populations-of-rod-shaped-bacteria
#9
James Winkle, Oleg A Igoshin, Matthew Bennett, Kreso Josic, William Ott
Advances in synthetic biology allow us to engineer bacterial collectives with pre-specified characteristics. However, the behavior of these collectives is difficult to understand, as cellular growth and division as well as extra-cellular fluid flow lead to complex, changing arrangements of cells within the population. To rationally engineer and control the behavior of cell collectives we need theoretical and computational tools to understand their emergent spatiotemporal dynamics. Here, we present an agent-based model that allows growing cells to detect and respond to mechanical interactions...
June 26, 2017: Physical Biology
https://www.readbyqxmd.com/read/28638399/recent-genetic-gains-in-nitrogen-use-efficiency-in-oilseed-rape
#10
Andreas Stahl, Mara Pfeifer, Matthias Frisch, Benjamin Wittkop, Rod J Snowdon
Nitrogen is essential for plant growth, and N fertilization allows farmers to obtain high yields and produce sufficient agricultural commodities. On the other hand, nitrogen losses potentially cause adverse effects to ecosystems and to human health. Increasing nitrogen use efficiency (NUE) is vital to solve the conflict between productivity, to secure the demand of a growing world population, and the protection of the environment. To ensure this, genetic improvement is considered to be a paramount aspect toward ecofriendly crop production...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28635260/development-validation-and-interlaboratory-evaluation-of-a-quantitative-multiplexing-method-to-assess-levels-of-ten-endogenous-allergens-in-soybean-seed-and-its-application-to-field-trials-spanning-three-growing-seasons
#11
Ryan C Hill, Trent J Oman, Xiujuan Wang, Guomin Shan, Barry Schafer, Rod A Herman, Rowel Tobias, Jeff Shippar, Bhaskar Malayappan, Li Sheng, Austin Xu, Jason Bradshaw
As part of the regulatory approval process in Europe, comparison of endogenous soybean allergen levels between genetically engineered (GE) and non-GE plants has been requested. A quantitative multiplex analytical method using tandem mass spectrometry was developed and validated to measure 10 potential soybean allergens from soybean seed. The analytical method was implemented at six laboratories to demonstrate the robustness of the method and further applied to three soybean field studies across multiple growing seasons (including 21 non-GE soybean varieties) to assess the natural variation of allergen levels...
June 29, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28632115/flaviaesturariibacter-luteus-sp-nov-isolated-from-an-agricultural-floodplain-soil-and-emended-description-of-the-genus-flaviaesturariibacter
#12
Javier Pascual, Bärbel U Foesel, Alicia Geppert, Katharina J Huber, Jörg Overmann
A novel slow-growing bacterial strain designated as AW305T was isolated from an agricultural floodplain soil located in Mashare, Kavango region, Namibia. Cells stained Gram-negative, were non-motile, non-spore-forming, coccoid to rod-shaped and did not form a capsule. Colonies were yellow-pigmented, but flexirubin-type pigments were not detected. AW305T had an aerobic chemo-organoheterotrophic metabolism, using a narrow spectrum of carbon sources for growth, with preference for complex protein substrates, organic acids and amino acids...
June 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28630123/absence-of-the-polar-organizing-protein-popz-causes-aberrant-cell-division-in-agrobacterium-tumefaciens
#13
Matthew Howell, Alena Aliashkevich, Anne K Salisbury, Felipe Cava, Grant R Bowman, Pamela J B Brown
Agrobacterium tumefaciens is a rod-shaped bacterium that grows by polar insertion of new peptidoglycan during cell elongation. As the cell cycle progresses, peptidoglycan synthesis at the pole ceases prior to insertion of new peptidoglycan at mid-cell to enable cell division. The A. tumefaciens homolog of the Caulobacter crescentus polar organelle development protein PopZ has been identified as a growth pole marker and a candidate polar growth promoting factor. Here, we characterize the function of PopZ in cell growth and division of A...
June 19, 2017: Journal of Bacteriology
https://www.readbyqxmd.com/read/28629495/noviherbaspirillum-denitrificans-sp-nov-a-denitrifying-bacterium-isolated-from-rice-paddy-soil-and-noviherbaspirillum-autotrophicum-sp-nov-a-denitrifying-facultatively-autotrophic-bacterium-isolated-from-rice-paddy-soil-and-proposal-to-reclassify-herbaspirillum
#14
Satoshi Ishii, Naoaki Ashida, Hiroki Ohno, Takahiro Segawa, Shuhei Yabe, Shigeto Otsuka, Akira Yokota, Keishi Senoo
Thirty-nine denitrifying bacterial strains closely related to one another, represented by strains TSA40T and TSA66T, were isolated from rice paddy soils. Strains TSA40T and TSA66T were Gram-stain-negative, slightly curved rod-shaped, and motile by means of polar flagella. They were able to reduce nitrate, nitrite and nitrous oxide, but unable to fix atmospheric N2. While strain TSA66T was able to grow autotrophically by H2-dependent denitrification, strain TSA40T could not. Phylogenetic analysis suggested that they belong to the family Oxalobacteraceae, the order Burkholderiales in the class Betaproteobacteria...
June 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28629494/shewanella-intestini-sp-nov-isolated-from-the-intestine-of-abalone-haliotis-diversicolor
#15
Yingbao Gai, Zhaobin Huang, Qiliang Lai, Zongze Shao
A Gram-stain-negative, rod-shaped bacterium with a singular polar flagellum, designated as strain XMDDZSB0408T, was isolated from the intestine of adult abalone, Haliotis diversicolor. Activity of oxidase was positive and catalase activity was negative. It could grow at salinities from 3 to 6 % NaCl (w/v), and pH 7-9. It had the highest sequence similarity of <96.0 % with all previously established species for the complete 16S rRNA gene (1531 bp). The results of phylogenetic analysis indicated that the strain was affiliated to the genus Shewanella and closely related to Shewanella gaetbuli TF-27T and Shewanella japonica KMM 3299T (95...
June 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28629493/naumannella-huperziae-sp-nov-an-endophytic-actinobacterium-isolated-from-huperzia-serrata-thunb
#16
Ye Sun, Hua-Hong Chen, Hong-Min Sun, Meng-Jie Ai, Jing Su, Li-Yan Yu, Yu-Qin Zhang
An endophytic, short rod-shaped, non-motile and non-spore-forming actinobacterium, designated strain CPCC 204135T, was isolated from a surface-sterilized medicinal plant, Huperzia serrata (Thunb.), collected from Sichuan Province, south-west China. Strain CPCC 204135T was observed to grow at temperatures between 20 and 37 °C (optimum, 28-32 °C), at pH 6.0-9.0 (optimum, pH 7.0-8.0) and in the presence of 0-9.0 % (w/v) NaCl (optimum, 0-3 %). Phylogenetic analysis based on 16S rRNA gene sequences revealed that strain CPCC 204135T belonged to the genus Naumannella, showing the highest level of 16S rRNA gene sequence similarity with Naumannella halotolerans DSM 24323T (97...
June 20, 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28623110/pertussis-without-apparent-cough-in-a-disabled-girl-with-a-tracheostomy
#17
Hisataka Nozawa, Kensuke Shoji, Kazuhiro Uda, Tomoo Nakamura, Mitsuru Kubota, Akira Ishiguro, Isao Miyairi
Pertussis is characterized by intense, prolonged coughing in children often followed by a distinctive whooping sound on inspiration. However, the clinical manifestations and natural course of pertussis in disabled children are largely unknown. We experienced a case of pertussis in a disabled girl who had previously undergone a tracheostomy and laryngotracheal separation. She presented with increased tracheal secretions and required hospitalization but did not develop a cough. Pertussis was suspected from the sputum Gram stain, which revealed numerous, short gram-negative rods that did not grow on chocolate agar...
June 13, 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/28622904/radiographic-outcomes-of-shilla-growth-guidance-system-and-traditional-growing-rods-through-definitive-treatment
#18
Scott J Luhmann, June C Smith, Ann McClung, Frances L McCullough, Richard E McCarthy, George H Thompson
STUDY DESIGN: Retrospective review of a multicenter database. OBJECTIVES: To compare the radiographic outcomes of patients who had undergone the Shilla Growth Guidance System (SGGS) and traditional growing rod (GR) treatment for management of early-onset scoliosis (EOS) through definitive treatment. SUMMARY OF BACKGROUND DATA: The efficacy of surgical treatment of EOS can only be determined after definitive treatment has been completed. We wanted to review our experience with the SGGS and GR for management of EOS through definitive treatment...
July 2017: Spine Deformity
https://www.readbyqxmd.com/read/28622795/desulfamplus-magnetovallimortis-gen-nov-sp-nov-a-magnetotactic-bacterium-from-a-brackish-desert-spring-able-to-biomineralize-greigite-and-magnetite-that-represents-a-novel-lineage-in-the-desulfobacteraceae
#19
Elodie C T Descamps, Caroline L Monteil, Nicolas Menguy, Nicolas Ginet, David Pignol, Dennis A Bazylinski, Christopher T Lefèvre
A magnetotactic bacterium, designated strain BW-1(T), was isolated from a brackish spring in Death Valley National Park (California, USA) and cultivated in axenic culture. The Gram-negative cells of strain BW-1(T) are relatively large and rod-shaped and possess a single polar flagellum (monotrichous). This strain is the first magnetotactic bacterium isolated in axenic culture capable of producing greigite and/or magnetite nanocrystals aligned in one or more chains per cell. Strain BW-1(T) is an obligate anaerobe that grows chemoorganoheterotrophically while reducing sulfate as a terminal electron acceptor...
May 31, 2017: Systematic and Applied Microbiology
https://www.readbyqxmd.com/read/28619149/abortion-and-mortality-in-farm-mink-neovison-vison-associated-with-feed-born-clostridium-limosum
#20
Anne Sofie Hammer, Lars Andresen, Bent Aalbæk, Peter Damborg, Vilhelm Weiss, Mette Line Christiansen, Søren Selsing, Martin Iain Bahl
Disease in mink clinically characterized by abortion and increased mortality among pregnant female mink on 28 Danish farms was observed during April and May 2015. Most of these farms suffered extensive disease problems, including a significant increase in the number of mated females without litters. Pathological, microbiological and molecular biological methods were applied to investigate the cause of disease. Necropsies of animals found dead revealed fragile and partially dissolved (liquefying) uterine tissue, with the presence of Gram positive rod-shaped bacteria...
May 2017: Veterinary Microbiology
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