| family spirosomaceae: gram-negative ring-forming aerobic bacteria. | the bacteria having a unique ring-like morphology first isolated from nasal mucus by weibel in 1887 were classified as a new genus spirosoma by migula in 1894. however, because these bacteria were not completely described for taxonomic purposes and their cultures were no longer available, the genus was deleted from the bergey's manual of determinative bacteriology, 6th edition, 1948. orskov (1928) created a new genus "microcyclus" (a name that has been found to be illegitimate and replaced with ... | 1990 | 2248690 |
| polyamine distribution profiles in the eighteen genera phylogenetically located within the flavobacterium-flexibacter-cytophaga complex. | cellular polyamines of eighteen genera belonging to the flavobacterium-flexibacter-cytophaga complex were analysed by ion exchange liquid chromatography. homospermidine was the major polyamine in the genera bergeyella, riemerella, ornithobacterium, weeksella, capnocytophaga, polaribacter and psychroflexus belonging to the family flavobacteriaceae. in the family spirosomaceae, runella, spirosoma and flectobacillus species contained spermidine whereas cyclobacterium species contained homospermidin ... | 2001 | 11491527 |
| phylogenetic placement of the spirosomaceae. | comparative analysis of 16s rrna sequences shows that the family spirosomaceae belongs within the eubacterial phylum defined by the flavobacteria and bacteriodes. its constituent genera, spirosoma, flectobacillus, and runella form a monophyletic grouping therein. the phylogenetic assignment is based not only upon evolutionary distance analysis, but also upon sequence signatures and higher order structural synapomorphies in 16s rrna. another genus peripherally associated with the spirosomaceae ... | 1990 | 11538307 |
| aerobic and facultatively anaerobic cellulolytic bacteria from the gut of the termite zootermopsis angusticollis. | to demonstrate the occurrence of cellulolytic bacteria in the termite zootermopsis angusticollis. | 2002 | 11849325 |
| [influence of the incubation temperature on the reaction of oligotrophic bacteria to stress]. | representatives of five genera of psychroactive oligotrophic bacteria, arcocella, renobacter, spirosoma, caulobacter, and methylobacterium, were for the first time shown to be capable of growing at a negative temperature (-2 degrees c). long-term cultivation (for 116 days) at a low temperature under limitation by the carbon source is stressful for oligotrophic bacteria and leads to the death of a part of the cell population. the number of viable cells of caulobacter crescentus decreased by two-t ... | 2004 | 15688934 |
| bacterial community succession in natural river biofilm assemblages. | temporal bacterial community changes in river biofilms were studied using 16s rrna gene-based polymerase chain reaction-denaturing gradient gel electrophoresis (dgge) followed by sequence analysis. naturally occurring biofilms were sampled in 2001 during an undisturbed 7-month low-water period in the river garonne (sw france). during the sampling period epilithic biomass exhibited a particular pattern: two 3-month periods of accumulation that resulted in two peaks in summer and fall, each at abo ... | 2005 | 16341639 |
| predominant bacteria in an activated sludge reactor for the degradation of cutting fluids. | for the first time, an activated sludge reactor, established for the degradation of cutting fluids, was examined for predominant bacteria. in addition, both total and viable numbers of bacteria in the reactor were determined so that the percentage of each predominant type in the total reactor population could be determined. three samples were studied, and a total of 15 genera were detected. in each sample, the genus pseudomonas and the genus microcyclus were present in high numbers. three other ... | 1983 | 16346426 |
| larkinella insperata gen. nov., sp. nov., a bacterium of the phylum 'bacteroidetes' isolated from water of a steam generator. | a gram-negative bacterium, designated strain lmg 22510t, was isolated from water of a pharmaceutical company steam generator. the cells had a ring-like and horseshoe-shaped morphology and possessed gliding motility. phylogenetic analysis of the 16s rrna gene sequence showed that the strain was a member of the flexibacter group within the phylum 'bacteroidetes'; its nearest neighbour was spirosoma linguale (88.8 % sequence similarity). dna base content, fatty acid composition and biochemical char ... | 2006 | 16403892 |
| spirosoma rigui sp. nov., isolated from fresh water. | a gram-negative, yellow-pigmented bacterium capable of gliding motility, designated strain wpcb118(t), was isolated from fresh water collected from the woopo wetland (republic of korea). cells were rod-shaped and sometimes filamentous. the major fatty acids were iso-c(15 : 0) 2-oh and/or c(16 : 1)omega7c (45.6 %), c(16 : 1)omega5c (18.5 %), iso-c(15 : 0) (9.5 %) and c(16 : 0) (8.8 %). the predominant menaquinone and polar lipid were mk-7 and phosphatidylethanolamine, respectively. the dna g+c co ... | 2007 | 18048741 |
| rudanella lutea gen. nov., sp. nov., isolated from an air sample in korea. | an orange-coloured bacterial strain, designated 5715s-11(t), was isolated from an air sample in suwon, republic of korea. the strain was strictly aerobic, gram-negative, non-spore-forming, non-flagellated and rod-shaped, frequently forming filaments. growth of the strain was observed at 4-40 degrees c (optimum, 30 degrees c), ph 6.0-8.0 (optimum, ph 7.0) and 0-2 % (w/v) nacl. phylogenetically, strain 5715s-11(t) was shown to be a member of the family spirosomaceae within the phylum bacteroidetes ... | 2008 | 18218952 |
| conversion of lesquerolic acid to 14-oxo-11(z)-eicosenoic acid by genetically variable sphingobacterium multivorum strains. | we investigated new microbial systems for their ability to convert lesquerolic acid (lqa; 14-hydroxy-11(z)-eicosenoic acid) to value-added products. a strain of sphingobacterium multivorum (nrrl b-23212) was found previously to convert lqa to 14-oxo-11(z)-eicosenoic acid (14-oea) as determined by gas chromatography-mass spectrometry and nuclear magnetic resonance analyses. conversion of lqa was subsequently extended to examine s. multivorum and closely related species of pedobacter, spirosoma, c ... | 2008 | 18379841 |
| spirosoma panaciterrae sp. nov., isolated from soil. | a gram-negative, yellowish bacterial strain, designated gsoil 1519(t), was isolated from soil of a ginseng field in pocheon province (south korea) and characterized using a polyphasic approach to determine its taxonomic position. comparative 16s rrna gene sequence analysis showed that strain gsoil 1519(t) belongs to the family 'flexibacteraceae' and is related to spirosoma rigui kctc 12531(t) (91.8 % similarity) and spirosoma linguale lmg 10896(t) (91.5 % similarity). phylogenetic distances from ... | 2009 | 19196773 |
| spirosoma spitsbergense sp. nov. and spirosoma luteum sp. nov., isolated from a high arctic permafrost soil, and emended description of the genus spirosoma. | two pigmented, gram-negative, non-motile, pleomorphic rod-shaped bacteria (strains spm-9(t) and spm-10(t)) were isolated from a permafrost soil collected from the adventdalen valley, spitsbergen, northern norway. a third isolate (strain m5-h2) was recovered from the same soil sample after the sample had been exposed to simulated martian environmental conditions. the three strains were characterized taxonomically by using a polyphasic approach. phylogenetic, chemotaxonomic, physiological and morp ... | 2009 | 19329617 |
| fibrella aestuarina gen. nov., sp. nov., a filamentous bacterium of the family cytophagaceae isolated from a tidal flat, and emended description of the genus rudanella weon et al. 2008. | a gram-staining-negative, pink bacterium, designated strain buz 2(t), was isolated from coastal mud from the north sea (fedderwardersiel, germany). cells were rod-shaped and able to form multicellular filaments. growth after 7 days was observed at 10-40 °c, at ph 6-8 and with 0-0.5 % nacl. the phylogenetic tree based on 16s rrna gene sequences indicated that strain buz 2(t) is a member of the family cytophagaceae, its closest neighbours being rudanella lutea 5715s-11(t), spirosoma linguale lmg 1 ... | 2011 | 20190021 |
| fibrisoma limi gen. nov., sp. nov., a filamentous bacterium isolated from tidal flats. | an orange-pigmented, gram-staining-negative, non-motile, filament-forming, rod-shaped bacterium (buz 3(t)) was isolated from a coastal mud sample from the north sea (fedderwardersiel, germany) and characterized taxonomically using a polyphasic approach. according to 16s rrna gene sequence data, it belonged to the family cytophagaceae, exhibiting low 16s rrna gene sequence similarity (<90 %) with members of the genera spirosoma, rudanella and fibrella. the dna g+c content was 52.0 mol%. the major ... | 2010 | 20601484 |
| complete genome sequence of spirosoma linguale type strain (1). | spirosoma linguale migula 1894 is the type species of the genus. s. linguale is a free-living and non-pathogenic organism, known for its peculiar ringlike and horseshoe-shaped cell morphology. here we describe the features of this organism, together with the complete genome sequence and annotation. this is only the third completed genome sequence of a member of the family cytophagaceae. the 8,491,258 bp long genome with its eight plasmids, 7,069 protein-coding and 60 rna genes is part of the gen ... | 2010 | 21304700 |
| culturable diversity of heterotrophic bacteria in forlidas pond (pensacola mountains) and lundström lake (shackleton range), antarctica. | cultivation techniques were used to study the heterotrophic bacterial diversity in two microbial mat samples originating from the littoral zone of two continental antarctic lakes (forlidas pond and lundström lake) in the dufek massif (within the pensacola mountains group of the transantarctic mountains) and shackleton range, respectively. nearly 800 isolates were picked after incubation on several growth media at different temperatures. they were grouped using a whole-genome fingerprinting techn ... | 2011 | 21424822 |
| interspecies variation in survival and growth of filamentous heterotrophic bacteria in response to uvc radiation. | ultraviolet radiation is an important environmental constraint on the evolution of life. in addition to its harmful effects, ultraviolet radiation plays an important role in generating genetic polymorphisms and acting as a selective agent. understanding how prokaryotes cope with high radiation can give insights on the evolution of life on earth. four representative filamentous bacteria from the family cytophagaceae with different pigmentation were selected and exposed to different doses of uvc r ... | 2011 | 21530299 |