Chudaugaard9977

A taxonomic study was carried out on strain C16B3T, which was isolated from deep seawater of the Pacific Ocean. The bacterium was Gram-stain-negative, oxidase- and catalase- positive and rod-shaped. Growth was observed at salinities of 0-8.0 % and at temperatures of 10-45 °C. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain C16B3T belonged to the genus Solimonas, with the highest sequence similarity to Solimonas terrae KIS83-12T (97.2 %), followed by Solimonas variicoloris MN28T (97.0 %) and the other four species of the genus Solimonas (94.5 -96.8 %). The average nucleotide identity and estimated DNA-DNA hybridization values between strain C16B3T and the type strains of the genus Solimonas were 74.05-79.48 % and 19.5-22.5 %, respectively. The principal fatty acids (>5 %) were summed feature 8 (C18  1 ω7c/C18  1 ω6c; 20.9 %), iso-C16  0 (14.6 %), C16  1 ω5c (9.4 %), iso-C12  0 (8.4 %), summed feature 2 (C14  0 3-OH/iso I-C16  1 and C12  0 aldehyde; 6.8 %) and C16  0 (5.5 %). The G+C content of the chromosomal DNA was 65.37 mol%. The respiratory quinone was determined to be Q-8 (100 %). The polar lipids were diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylglycerol, four unidentified aminolipids, six unidentified phospholipids and one unidentified polar lipid. LY2880070 mw The combined genotypic and phenotypic data show that strain C16B3T represents a novel species within the genus Solimonas, for which the name Solimonas marina sp. nov. is proposed, with the type strain C16B3T (=MCCC 1A04678T=KCTC 52314T).Genome sequence analysis of two strains collected in Canada at the end of the 1970s and deposited in 1998 at the Collection de l'Institut Pasteur has led to the taxonomic description of a novel fish-associated species in the genus Flavobacterium. Both strains, CIP 105534T and CIP 105535, were yellow-pigmented, Gram-stain-negative, non-spore-forming rod-shaped bacteria that exhibited gliding motility. They grew aerobically in a temperature range from 5 to 30 °C with optimal growth at 25 °C on trypticase soy or Reasoner's 2A agar but they did not grow on marine agar. Their major fatty acid profiles were similar, consisting of iso-C15  0, C16  1 ω7c and/or iso-C15  0 2-OH (shown as summed feature 3), C16  0 3-OH, iso-C17  0 3-OH and C16  0. The major polyamine was sym-homospermidine. Phosphatidylethanolamine and, most notably, ornithine-containing lipid OL2 and unidentified aminophospholipid APL1 were major polar lipids. A yellow pigment spot was visible after chromatographic analysis. The predominant respiratory quinone was MK-6. The G+C content of the two genomes was 34 mol% and their size was around 5.8 Mb. Comparison of the 16S rRNA gene sequences with those of the closely related type strains showed high levels of relatedness with Flavobacterium collinsii and Flavobacterium pectinovorum. All average nucleotide identity (ANI) and digital DNA-DNA hybridization values estimated against publicly available Flavobacterium genome assemblies were lower than 90 and 30 %, respectively. Phylogenetic, phenotypic and chemotaxonomic data indicated that the two strains represent a novel species of the genus Flavobacterium, for which the name Flavobacterium bizetiae sp. nov. is proposed. The type strain is CIP 105534T (=LMG 1342T). The unique ability of F. bizetiae to use melibiose as a sole source of carbon could provide a simple phenotypic test to discriminate F. bizetiae from its closest relatives.Nudix proteins catalyse hydrolysis of pyrophosphate bonds in a variety of substrates and are ubiquitous in all domains of life. Their widespread presence and broad substrate specificity suggest that they have important cellular functions. In this review, we summarize the state of knowledge on microbial Nudix proteins involved in pathogenesis.A Gram-stain-positive, mycelium-forming actinobacterium, YIM 121974T was isolated from an extreme arid soil sample collected at Yuanmou Earth Forest, Yunnan Province, PR China. Classification using a polyphasic approach suggested that strain YIM 121974T belonged to the genus Glycomyces and was closely related to Glycomyces dulcitolivorans SJ-25T (98.3 %), Glycomyces scopariae YIM 56256T (98 %), Glycomyces mayteni YIM 61331T (97.9 %), Glycomyces albidus NEAU-7082T (97.9 %), Glycomyces sambucus CGMCC 4.3147T (97.7 %), Glycomyces artemisiae IXS4T (97.6 %) and Glycomyces parisis CPCC 204357T (97.5 %), but could be distinguished from its closest relatives by a combination of phenotypic and phylogenetic features. Average nucleotide identity values of YIM 121974T to its closest phylogenetic neighbours were 70.7-88.9 %, which are lower than the threshold of 95 %. The digital DNA-DNA hybridization values between YIM 121974T and these relative species were 18.0-36.3 %, which are also well below the cut-off value (>70 %) for species delineation. The DNA G+C content of strain YIM 121974T was 72.3 mol% (draft genome sequence). The predominant menaquinone was MK-11. The phospholipids were composed of diphosphatidylglycerol, phosphatidylglycerol, phosphatidylinositol, phosphatidylinositol mannoside, phosphoglycolipid and glycolipid. The major fatty acid compositions were iso-C16  0, anteiso-C15  0 and anteiso-C17  0. The draft genome of isolate YIM 121974T was found to contain 11 secondary metabolite biosynthesis gene clusters by using the antiSMASH server. Based on the above observations, strain YIM 121974T could be distinguished from closely related species belonging to the genus Glycomyces. Thus, strain YIM 121974T represents a novel species of the genus Glycomyces, for which the name Glycomyces terrestris sp. nov. is proposed. The type strain is YIM 121974T (=KCTC 39870T=DSM 106742T).In vivo biofilms cause recalcitrant infections with extensive and unpredictable antibiotic tolerance. Here, we demonstrate increased tolerance of colistin by Pseudomonas aeruginosa when grown in medium that mimics cystic fibrosis (CF) sputum versus standard medium in in vitro biofilm assays, and drastically increased tolerance when grown in an ex vivo CF model versus the in vitro assay. We used colistin conjugated to the fluorescent dye BODIPY to assess the penetration of the antibiotic into ex vivo biofilms and showed that poor penetration partly explains the high doses of drug necessary to kill bacteria in these biofilms. The ability of antibiotics to penetrate the biofilm matrix is key to their clinical success, but hard to measure. Our results demonstrate both the importance of reduced entry into the matrix in in vivo-like biofilm, and the tractability of using a fluorescent tag and benchtop fluorimeter to assess antibiotic entry into biofilms. This method could be a relatively quick, cheap and useful addition to diagnostic and drug development pipelines, allowing the assessment of drug entry into biofilms, in in vivo-like conditions, prior to more detailed tests of biofilm killing.