| fructification & antagonistic effect of myxobacteria on eubacteria: lytic effect & fruiting body formation of myxococcus, chondrococcus & angiococcus spp. | | 1976 | 821856 |
| the corallopyronins, new inhibitors of bacterial rna synthesis from myxobacteria. | from the culture broth of the myxobacterium, corallococcus (myxococcus) coralloides, three new antibiotics have been isolated: corallopyronin a, b and c. the compounds, which are chemically related to the recently discovered myxopyronins, act mainly on gram-positive bacteria, with mic values between 0.1 and 10 micrograms/ml, and only exceptionally or at much higher concentrations (mic values; 100 and more micrograms/ml) on gram-negatives. they do not inhibit eukaryotic organisms and show no toxi ... | 1985 | 2581926 |
| the fine structure of chondrococcus columnaris. 3. the surface layers of chondrococcus columnaris. | an electron microscope study of the myxobacterium chondrococcus columnaris has revealed the following structures in the peripheral layers of the cells: (1) a plasma membrane, (2) a single dense layer (probably the mucopeptide component of the cell wall), (3) peripheral fibrils, (4) an outer membrane, and (5) a material coating the surfaces of the cells which could be stained with the dye ruthenium red.the ruthenium red-positive material is probably an acid mucopolysaccharide and may be involved ... | 1967 | 4168729 |
| antibiotic additives for the isolation of chondrococcus columnaris from fish. | | 1969 | 4304764 |
| studies on lytic activities of chondrococcus coralloides (myxobacterales). ii. identification of the bacteriolytic enzyme as a muramidase. | | 1972 | 4561259 |
| seasonal prevalence of chondrococcus columnaris infection in black bullheads from clear lake, iowa. | | 1973 | 4701177 |
| studies on lytic activities of chondrococcus coralloides (myxobacteriales). i. purification and some properties of the bacteriolytic and proteolytic activity. | | 1971 | 4996319 |
| immune response of salmonids and exposure of river fishes to chondrococcus columnaris. bnwl-480. | | 1966 | 5301044 |
| oral immunization of juvenile coho salmon against chondrococcus columnaris. bnwl-1050. | | 1970 | 5311306 |
| the survival of chondrococcus columnaris in waters of different quality. | | 1968 | 5752923 |
| bacteriophage infecting the myxobacterium chondrococcus columnaris. | kingsbury, david t. (university of washington, seattle), and erling j. ordal. bacteriophage infecting the myxobacterium chondrococcus columnaris. j. bacteriol. 91:1327-1332. 1966.-during a series of screening experiments, seven bacteriophages which infect the pathogenic myxobacterium chondrococcus columnaris were isolated. of these, one was chosen for detailed study. this phage has a wide host range among strains of c. columnaris, but does not infect other myxobacterial species tested. morpholog ... | 1966 | 5929758 |
| galactosamine glycan of chondrococcus columnaris. | the marked viscosity of liquid cultures of the myxobacterium chon-rococcus columnaris is caused by production of an extracellular polysaccharide. the polysaccharide is a high-molecular-weight homopolymer of d-galactosamine in which the galactosamine subunits are connected by (alpha)-(l-->4) glycosidic linkages. half of the amino groups are acetylated. | 1966 | 5939534 |
| the fine structure of chondrococcus columnaris. ii. structure and formation of rhapidosomes. | when cells of c. columnaris were broken open, treated with pta, and examined in the electron microscope, tubular structures (rhapidosomes) were present in the preparations. the rhapidosomes are approximately 300 a in diameter. their length varies from about 500 to about 15,000 a. an axial hole which runs the length of the rhapidosomes appears to widen and narrow with a regular periodicity. end-on views of short segments of rhapidosomes revealed the presence of subunits around their outside perip ... | 1967 | 6061714 |
| the fine structure of chondrococcus columnaris. i. structure and formation of mesosomes. | cells of chondrococcus columnaris were sectioned and examined in the electron microscope after fixation by two different methods. after fixation with osmium tetroxide alone, the surface layers of the cells consisted of a plasma membrane, a dense layer (mucopeptide layer), and an outer unit membrane. the outer membrane appeared distorted and was widely separated from the rest of the cell. the intracytoplasmic membranes (mesosomes) appeared as convoluted tubules packaged up within the cytoplasm by ... | 1967 | 6061716 |
| the correlation between morphological and phylogenetic classification of myxobacteria. | in order to determine whether morphological criteria are suitable to affiliate myxobacterial strains to species, a phylogenetic analysis of 16s rdnas was performed on 54 myxobacterial strains that represented morphologically 21 species of the genera angiococcus, archangium, chondromyces, cystobacter, melittangium, myxococcus, polyangium and stigmatella, five invalid species and three unclassified isolates. the analysis included 12 previously published sequences. the branching pattern confirmed t ... | 1999 | 10425789 |
| [isolation and identification of myxobacteria]. | this paper reported that the authors isolated large numbers of myxobacteria from more than 100 samples collected in many places of china. more than 400 pure strains were obtained. these strains belonged to 10 genera of myxococcales. the most frequent genera isolated were myxococcus, sorangium, corallococcus, and cystobacter. melittangium was seldom isolated. no chondromyces and haploangium were found. | 2000 | 12549062 |
| study of a bacteriophage infecting the myxobacterium chondrococcus columnaris. | | 1955 | 13271323 |
| [observations on the non-lytic and lytic action of myxobacteria on other microorganisms]. | | 1956 | 13340830 |
| studies on the myxobacterium chondrococcus columnaris. i. serological typing. | | 1959 | 13672906 |
| studies on the myxobacterium chondrococcus columnaris. ii. bacteriocins. | | 1959 | 13672907 |
| antibiotic activity of myxobacteria in relation to their bacteriolytic capacity. | norén, börge (university of wisconsin, madison) and kenneth b. raper. antibiotic activity of myxobacteria in relation to their bacteriolytic capacity. j. bacteriol. 84:157-162. 1962-myxococcus virescens, m. fulvus, m. stipitatus, m. lacteus, chondrococcus blasticus, and chondromyces crocatus were tested for antibacterial activity, and all were found to secrete products that inhibited the growth of gram-positive eubacteria. the amount of inhibition varied with the myxobacterium employed and with ... | 1962 | 14480333 |
| grouping myxococci (corallococcus) strains by matrix-assisted laser desorption ionization time-of-flight (maldi tof) mass spectrometry: comparison with gene sequence phylogenies. | nine corallococcus isolates and three type strains of corallococcus species were characterized by intact cell mass spectrometry using matrix assisted laser desorption ionization time-of-flight (maldi-tof) mass spectrometry. the resulting phenetic clustering was compared to the phylogenetic grouping based upon sequences of two housekeeping genes. the three dendrograms of relatedness resembled each other in that the isolates were highly similar to the type strains of corallococcus exiguus and cora ... | 2005 | 15717228 |
| gene sequence heterogeneity of corallococcus coralloides strains isolated from geographically diverse locations. | thirty-three strains classified as corallococcus coralloides isolated from mostly soil samples in 14 countries of four continents, were subjected to phylogenetic analyses. based on 16s rdna analyses the strains form a highly related cluster, sharing above 98.7% sequence similarity. four groups were recognized within this cluster, only one of which, containing two strains from st. lucia, lower antilles, was exclusively defined by strains from the same sample. the other groups contained members fr ... | 2005 | 15946298 |
| exploring the diversity of myxobacteria in a soil niche by myxobacteria-specific primers and probes. | the diversity of myxobacteria in a soil niche was explored using culture-dependent and -independent methods. conventional cultivation for bacteriolytic myxobacteria produced six types of myxobacteria, which were identified as two myxococcus spp., two corallococcus spp., a cystobacter sp. and a nannocysts sp. hybridization analysis of the soil bacterial 16s rrna gene library with myxobacteria-specific probes revealed that myxobacteria accounted for less than 1% in the bacterial community. a cysto ... | 2005 | 16156733 |
| taxonomic characterization of members of the genus corallococcus: molecular divergence versus phenotypic coherency. | corallococcus coralloides dsm 2259(t), corallococcus exiguus dsm 14696(t), corallococcus macrosporus dsm 14697(t) and more than 35 strains identified as members of corallococcus on the basis of morphology were subjected to partial sequences analysis of three housekeeping genes (lepa, fusa and rpob), complementing a recent phylogenetic analysis based on genes coding for 16s rrna and gyrb. phylogenetic analysis of each gene, generated by maximum likelihood and two different additive treeing algori ... | 2007 | 16584863 |
| 16s rrna gene and 16s-23s rrna gene internal transcribed spacer sequences analysis of the genus myxococcus. | phylogenetic relationships of the species belonging to the genus myxococcus were elucidated based on the sequences of 16s rrna genes and 16s-23s rrna gene internal transcribed spacer (its) regions. the myxococcus species were consequently classified into four distinct groups. the type strain of myxococcus coralloides occupied an independent position (group 1); it has been recently reclassified as corallococcus coralloides. group 2 comprised the type strains of both myxococcus virescens and myxoc ... | 2008 | 18355284 |
| replacement of atcc 25944t, the current type strain of melittangium lichenicola, with atcc 25946. request for an opinion. | it is proposed that the type strain of melittangium lichenicola (thaxter 1892) mccurdy 1971 is atcc 25946 (=dsm 14877), which was originally designated as a reference strain by mccurdy, and not atcc 25944(t), as given in the approved lists. swarm appearance, myxospore morphology and 16s rrna gene sequence data suggest that atcc 25946 is a representative of the species melittangium lichenicola, while strain atcc 25944 is clearly a member of the myxococcus-corallococcus clade. a request for an opi ... | 2008 | 19060095 |
| novel expression hosts for complex secondary metabolite megasynthetases: production of myxochromide in the thermopilic isolate corallococcus macrosporus gt-2. | abstract: although many secondary metabolites with diverse biological activities have been isolated from myxobacteria, most strains of these biotechnologically important gliding prokaryotes remain difficult to handle genetically. in this study we describe the new fast growing myxobacterial thermophilic isolate gt-2 as a heterologous host for the expression of natural product biosynthetic pathways isolated from other myxobacteria. according to the results of sequence analysis of the 16s rdna, thi ... | 2009 | 19126236 |
| emended descriptions of the genera myxococcus and corallococcus, typification of the species myxococcus stipitatus and myxococcus macrosporus and a proposal that they be represented by neotype strains. request for an opinion. | the genus corallococcus was separated from the genus myxococcus mainly on the basis of differences in morphology and consistency of swarms and fruiting bodies of the respective members. phylogenetic, chemotaxonomic and physiological evidence is presented here that underpins the separate status of these phylogenetically neighbouring genera. emended descriptions of the two genera are presented. the data also suggest that the species corallococcus macrosporus belongs to the genus myxococcus. to the ... | 2009 | 19567579 |
| antibiotic production by myxobacteria plays a role in predation. | myxobacteria are predatory and are prolific producers of secondary metabolites. here, we tested a hypothesized role that secondary metabolite antibiotics function as weapons in predation. to test this, a myxococcus xanthus ?ta1 mutant, blocked in antibiotic ta (myxovirescin) production, was constructed. against escherichia coli this ta(-) mutant was defective in producing a zone of inhibition (zoi). this shows that ta is the major m. xanthus diffusible antibacterial agent against e. coli. corres ... | 2011 | 21764930 |