| pyrrolo[1,4]benzodiazepine antibiotics. biosynthesis of the antitumor antibiotic sibiromycin by streptosporangium sibiricum. | the biosynthesis of the antitumor antibiotic sibiromycin by streptosporangium sibiricum requires the construction of four units: the amino sugar from glucose; the anthranilate ring from dl-tryptophan probably via kynurenine; the aromatic methyl group from methionine; the propylidene proline from l-tyrosine with the loss of two aromatic carbons and addition of a c-1 from methionine. retention of tritium from dl-[5-3h]tryptophan in sibiromycin suggest an nih shift during hydroxylation of an interm ... | 1979 | 582800 |
| [viability study of actinomycete cultures preserved for a long time on agar media]. | viability of 254 actinomycetous strains stored for 1 to 6 years on agarized media a temperature of 4-10 degrees c without passages was studied. the cultures included 204 strain of actinomyces, 26 strains of mycobacterium, 2 strains of streptosporangium, 1 strain of intrasporangium, 2 strains of micropolyspora and 5 strains of thermoactinomyces. most of the cultures, i.e. 94.55 per cent stored for 6 years remained vialbe after the this period. with an increase in the storage period from 1 to 4 ye ... | 1978 | 655683 |
| distribution of chloramphenicol acetyltransferase and chloramphenicol-3-acetate esterase among streptomyces and corynebacterium. | chloramphenicol-3-acetate esterase activity was detected in cell-free extracts of strains of streptomyces venezuela, streptomyces sp. and streptosporangium viridogriseum var. kofuense which produced chloramphenicol and also corynebacterium hydrocarboclastus which produced chloramphenicol analogs (corynecins). none of the cell-free extracts of chloramphenicol- or corynecin-producing strains possessed chloramphenicol acetyltransferase activity under conditions which avoided the influenced of the e ... | 1977 | 838634 |
| antitumor activity of a new antitumor antibiotic, sporamycin. | sporamycin is an antitumor antibiotic isolated from the culture filtrate of streptosporangium strain no. po-357. hydrolysate of the antibiotic showed at least 12 kinds of amino acid, and the molecular weight was calculated approximately as 8,500 approximately 9,000. antitumor activities of sporamycin were examined on murine tumors according to different schedules of treatment. after nine daily doses of the antibiotic had been given to dd mice bearing ehrlich ascites carcinoma, significant increa ... | 1977 | 892295 |
| platomycins a and b i taxonomy of the producing strain and production, isolation and biological properties of platomycins. | two new antibiotics, platomycins a and b, belonging to the phleomycin-bleomycin family, were isolated from the culture filtrate of streptosporangium sp. mk-78. this strain has been identified as a new variety of streptosporangium violaceochromogenes. both platomycins a and b are active against a variety of gram-positive and gram-negative bacteria, and also inhibit solid sarcoma 180 and ehrlich ascites carcinoma. | 1975 | 1102513 |
| letter: antitumor agents. xiii. isolation and absolute configuration of carminomycin i from streptosporangium sp. | | 1975 | 1159252 |
| a new antibiotic victomycin (xk 49-1-b-2). i. taxonomy and production of the producing organism. | a new antibiotic designated as victomycin which belongs to the phleomycin-bleomycin group antibiotics was isolated from a sporangia-forming actinomycete. from taxonomic studies, the producing strain was classified as streptosporangium violaceochromogenes nov., sp. kawamoto et nara 1974. fermentative production of antibiotic complex xk 49 is described. | 1975 | 1165222 |
| polyacrylamide gel electrophoresis analysis of ribosomal protein: a new approach for actinomycete taxonomy. | the ribosomal (r)-proteins from eleven streptomyces strains representing various numerical taxonomic clusters were compared by two-dimensional polyacrylamide-gel electrophoresis (2d-page). the protein patterns were specific for each species. an attempt was made to identify one strain of streptomyces by both traditional taxonomic methods and 2d-page analysis of the r-protein patterns. both methods identified the strain as streptomyces lavendulae, and protein pattern analysis also showed that s. g ... | 1992 | 1612446 |
| polyacrylamide gel electrophoresis analysis of ribosomal protein at-l30 from an actinomycete genus, streptosporangium. | we analyzed the ribosomal at-l30 proteins from 11 type strains of species belonging to the genus streptosporangium. the electrophoretic mobilities of the at-l30 preparations from these strains, as determined by two-dimensional polyacrylamide gel electrophoresis, revealed that they could be divided into three groups. the first group contained streptosporangium viridogriseum, s. viridogriseum subsp. kofuense, and s. albidum, while the second group contained s. roseum, s. album, s. vulgare, s. nond ... | 1992 | 1736963 |
| [comparative evaluation of various bacterial growth inhibitors as selective agents for isolation of soil actinomyces]. | tobramycin and dioxidine sensitivity of 57 strains belonging to 14 actinomycetes genera was studied. the cultures of streptomyces were much more sensitive to tobramycin than the cultures of rare genera. the majority of the streptomyces cultures showed a high resistance to dioxidine (mic greater than or equal to 50 micrograms/ml). at the same time the majority of the cultures of rare genera were inhibited by low concentrations of dioxidine (no more than 50 micrograms/ml). for isolation of actinom ... | 1991 | 1805699 |
| structural elucidation of aculeximycin. i. further purification and glycosidic bond cleavage of aculeximycin. | a new insecticidal antibiotic, aculeximycin (acm), was produced by an actinomycete identified as streptosporangium albidum. acm has been successfully isolated from culture filtrate by a combination of diaion hp-20, amberlite cg-50, reversed phase silica gel and sephadex lh-20 chromatographies. it was found that acm is a basic glycosidic antibiotic with a molecular weight of 1,672 including five monosaccharide units, three double bonds and a hemiketal ring by preliminary spectral analyses. treatm ... | 1989 | 2722683 |
| purification and n-terminal amino-acid sequences of bacterial malate dehydrogenases from six actinomycetales strains and from phenylobacterium immobile, strain e. | malate dehydrogenases from streptosporangium roseum (dsm 43021), planomonospora venezuelensis (dsm 43178), microtetraspora glauca (atcc 23057), actinoplanes missouriensis (dsm 43046), streptomyces atratus (atcc 14046), kibdelosporangium aridum (atcc 39323), and from phenylobacterium immobile, strain e (dsm 1986) were purified to homogeneity. the n-terminal amino-acid sequences were determined and compared with known prokaryotic and eukaryotic sequence data. the partial sequences from actinomycet ... | 1989 | 2775496 |
| [some irregularities in the production of an antineoplastic antibiotic sibiromycin by streptosporangium sibiricum gause et al. in complex media]. | | 1973 | 4796917 |
| taxonomic study on streptosporangium albidum nov. sp. | | 1968 | 4876997 |
| [production of the antibiotic sibiromycin by the streptosporangium sibiricum sp. nov. culture]. | | 1969 | 4907802 |
| reassociation of deoxyribonucleic acids from actinoplanes and other actinomycetes. | the ability of deoxyribonucleic acid (dna) isolated from a number of actinomycetes to reassociate with reference dna from actinoplanes philippinensis or streptomyces venezuelae has been measured. all of the dna preparations except for those from nocardia erythropolis and thermomonospora viridis contained 70 to 73 moles per cent guanine and cytosine. dna from two species of actinoplanes, two species of dactylosporangium, and ampullariella digitata formed extensive thermally stable duplexes with t ... | 1970 | 5437730 |
| [morphological properties of the producer of the antineoplastic antibiotic sibiromycin: streptosporangium sibiricum gause et al., 1969, in submerged cultures]. | | 1971 | 5558684 |
| chloramphenicol from streptosporangium viridogriseum var. kofuense. | | 1971 | 5572756 |
| [formation of 1,6-dihydroxyphenazine -5,10-dioxide by streptosporangium amethystogenes var. nonreducens var. nov]. | | 1967 | 5603542 |
| [streptosporangium rubrum n. sp.--a new species of the genus streptosporangium]. | | 1965 | 5865406 |
| electron microscopic observation of the sporangial structure of strains of actinoplanaceae. | lechevalier, hubert a. (rutgers, the state university, new brunswick, n.j.), mary p. lechevalier, and pauline e. holbert. electron microscopic observation of the sporangial structure of strains of actinoplanaceae. j. bacteriol. 92:1228-1235. 1966.-eight strains of streptosporangium spp. and one strain each of spirillospora albida and an ampullariella-like actinoplanes sp. were observed by electron microscopy. the sporangiospores of all these organisms had a smooth surface. all formed their spora ... | 1966 | 5926747 |
| sporaviridin, a new antibiotic produced by streptosporangium viridogriseum nov. sp. | | 1966 | 5952897 |
| actinoplanaceae antibiotics. ii. studies on sporaviridin. taxonomic study on the sporaviridin-producing microorganism, streptosporangium viridogriseum nov. sp. | | 1966 | 6012894 |
| aculeximycin, a new antibiotic from streptosporangium albidum. ii. isolation, physicochemical and biological properties. | a new larvicidal antibiotic, aculeximycin, was found in the culture broth of an actinomycete identified as streptosporangium albidum. aculeximycin was isolated from the culture filtrate by adsorption on a diaion hp-20 column and successive elution with acidic aqueous acetone. it was extracted from the concentrated active fraction with 1-butanol and subjected to column chromatography on a sephadex lh-20 column. aculeximycin exhibited strong larvicidal activity against mosquito larvae as well as a ... | 1983 | 6138341 |
| physical characterization of plasmids isolated from streptosporangium. | plasmids were isolated from two species of streptosporangium by cscl-ethidium bromide equilibrium density gradient centrifugation. a plasmid isolated from s. brasiliense, designated psgb-1, was characterized by electron microscopy and agarose gel electrophoresis. the psgb-1 plasmid is a closed circular dna molecule of 9.4 x 10(6) da. a restriction endonuclease map was generated and unique cleavage sites were found for ecori, clai, xbai, and mstii. another plasmid, psgv-1, isolated from s. virido ... | 1983 | 6306703 |
| cystathionine gamma-lyase of streptomyces phaeochromogenes. the occurrence of cystathionine gamma-lyase in filamentous bacteria and its purification and characterization. | cystathionine gamma-lyase (ec 4.4.1.1) is widely distributed in actinomycetes, e.g. genera streptomyces, micromonospora, micropolyspora, mycobacterium, nocardia, streptosporangium, and streptoverticillium. the enzyme was purified from streptomyces phaeochromogenes (ifo 3105) in nine steps. after the last steps, the enzyme appeared to be homogenous by the criteria of polyacrylamide gel electrophoresis, analytical centrifugation, and double diffusion in agarose. the enzyme crystallized in the apo ... | 1984 | 6432781 |
| a novel phenazine antifungal antibiotic, 1,6-dihydroxy-2-chlorophenazine. fermentation, isolation, structure and biological properties. | a novel, solvent extractable, antibiotic complex has been purified from the fermentation broth of an unusual member of the genus streptosporangium. two of the major components were isolated from the complex by alumina column chromatography. one of the components was identified as a previously reported compound, 1,6-dihydroxyphenazine. the other component was a novel chlorine containing phenazine, 1,6-dihydroxy-2-chlorophenazine, which exhibited broad spectrum antifungal activity in vitro against ... | 1984 | 6501107 |
| aculeximycin, a new antibiotic from streptosporangium albidum. i. taxonomy of producing organism and fermentation. | a soil isolate of actinomycete, strain ti-1, was found to produce a new antibiotic aculeximycin which killed insects as well as inhibited the growth of bacteria, yeasts and molds in vitro. yellowish gray colonies on agar media, formation of spherical to oval sporangia at the tip of aerial mycelium and the presence of meso-diaminopimelic acid and madurose in the cell wall ascribed this strain to genus streptosporangium. from its morphological, cultural and physiological characteristics, the strai ... | 1983 | 6630071 |
| morphology of spore-bearing structures in streptomyces ipomoea. | sporulating colonies of streptomyces ipomoea were observed using light and scanning electron microscopy. in addition to the open loops and spiral chains of spores characteristic of s. ipomoea, globose structures resembling sporangia of the genus streptosporangium were found. the "sporangia" had a smooth surface, were 5-6 micrometers in diameter, and consisted of an unbranched coiled hypha within an enveloping sheath. as the sporangia matured, septa formed in the internal sporogenous hypha formin ... | 1981 | 7260735 |
| influence of ph on spore aggregation of streptosporangium brasiliense. | spores of streptosporangium brasiliense aggregated at acidic ph's and were dissociated into free spores by changing to neutral or alkaline ph's. this finding was utilized in preparing uniform spore suspension, in which simple filtrations gave rise to consistent preparation of free spores at alkaline ph. | 1981 | 7262716 |
| selective recovery of streptosporangium fragile from soil by indirect immunomagnetic capture. | a polyclonal antibody raised to streptosporangium fragile spores reacted strongly and specifically with the immunizing strain and to a number of related species of streptosporangium, as determined by dot immunoblotting. an indirect immunomagnetic capture method was developed for the recovery of the target organism from sterile and non-sterile soil, using sheep anti-rabbit m-280 dynabeads. the effects of different soil blocking agents, antibody labelling concentrations and spore/dynabead capture ... | 1995 | 7496526 |
| tan-1511 a, b and c, microbial lipopeptides with g-csf and gm-csf inducing activity. | the microbial lipopeptides, tan-1511 a, b and c, were isolated from the culture broth of streptosporangium amethystogenes subsp. fukuiense al-23456. their structures were elucidated on the basis of their reactions and spectroscopic analyses. these lipopeptides were mixtures of molecules having different lengths of fatty acids. the metabolites stimulated the proliferation of bone marrow cells from balb/c female mice at very low concentrations (concentration giving 30% increase: a and b, 0.313 ng/ ... | 1995 | 7544336 |
| structural elucidation of aculeximycin. iii. planar structure of aculeximycin, belonging to a new class of macrolide antibiotics. | the planar structure of aculeximycin (1) produced by streptosporangium albidum has been determined by spectral methods and chemical degradations such as 1,8-diazabicyclo[5,4,0]undec-7-ene (dbu)-methanol reaction, ozonolysis, and periodative oxidation. the antibiotic consists of a 30-membered polyhydroxy lactone ring, an alpha, beta-unsaturated ester group, an intramolecular hemiketal, an oligosaccharide (aculexitriose), a neutral sugar and an amino sugar. the structure of aculeximycin is closely ... | 1995 | 7592030 |
| structural elucidation of aculeximycin. iv. absolute structure of aculeximycin, belonging to a new class of macrolide antibiotics. | aculeximycin (1) produced by streptosporangium albidum possesses a 30-membered polyhydroxy macrocyclic lactone and five sugars including aculexitriose. we have described the determination of the planar structure of n-diacetylated aculeximycin (2) using degradation products, which were obtained by dbu-methanol treatment, ozonolysis and periodative oxidation. in order to determine the relative and absolute configurations of aculeximycin, first, the relative and absolute configurations of the degra ... | 1995 | 7592031 |
| biological and pharmacological properties of highly selective new endothelin converting enzyme inhibitor ws79089b isolated from streptosporangium roseum no. 79089. | ws79089b a highly specific endothelin converting enzyme (ece) inhibitor has been isolated from the fermentation broth of streptosporangium roseum no. 79089. ws79089b showed highly selective ece inhibition activity with ic50 value of 0.14 microm and behaved as a competitive inhibitor of ece, with ki values of 8.9 x 10(-8) m. the sodium salt of ws79089b (fr901533) inhibited big endothelin-1 (big et-1) induced pressor effect in a dose dependent manner when administered to male sprague-dawley rats i ... | 1995 | 7706129 |
| ws79089a, b and c, new endothelin converting enzyme inhibitors isolated from streptosporangium roseum. no. 79089. taxonomy, fermentation, isolation, physico-chemical properties and biological activities. | ws79089a, b and c, which are novel endothelin converting enzyme (ece) inhibitors have been isolated from the fermentation broth of streptosporangium roseum no. 79089. these inhibitors were purified from an acetone extract of whole culture broth followed by silicar cc-4 column chromatography and hplc. ws79089a, b and c showed highly selective ece inhibition activity with ic50 values of 0.73 microm 0.14 microm and 3.42 microm, respectively. on the basis of spectroscopic and chemical evidence, the ... | 1994 | 8040066 |
| numerical and chemical classification of streptosporangium and some related actinomycetes. | one hundred and seventeen streptosporangia from soil were compared with marker strains of the family streptosporangiaceae for many phenotypic properties. the data were examined using the jaccard, pattern and simple matching coefficients with clustering achieved using average, complete and single linkage algorithms. particular confidence was placed in the product of the pattern, average linkage analysis given the sharp definition of aggregate groups and clusters and a combination of low test erro ... | 1993 | 8085797 |
| isolation and characterization of the substance isolated from streptosporangium species which inhibits lactic acid production by oral bacteria. | 1. the tentatively named mli, which inhibits lactic acid production in mutants streptococci, was isolated from streptosporangium species and purified by solvent extraction followed by chromatography, and then powdered. 2. mli greatly inhibited ph-decline and lactic acid production in glucose-containing reaction mixture by mutans streptococci or lactobacillus species. 3. these inhibitory mechanisms were not caused by an anti-bacterial effect, since the addition of a sufficient concentration of ml ... | 1993 | 8224747 |
| phylogenetic analysis reveals new relationships among members of the genera microtetraspora and microbispora. | the 16s rrna gene sequences of 7 microbispora strains, 14 microtetraspora species, 9 streptosporangium species, and 12 actinomadura species were determined. a phylogenetic analysis showed that microtetraspora fusca, microtetraspora glauca, and microtetraspora niveoalba formed a coherent cluster with the members of the genus microbispora. this cluster is distantly related to two other clusters, one of which consists of the microtetraspora species transferred from the former actinomadura pusilla g ... | 1996 | 8782672 |
| the genus nocardiopsis represents a phylogenetically coherent taxon and a distinct actinomycete lineage: proposal of nocardiopsaceae fam. nov. | the genus nocardiopsis was shown to be phylogenetically coherent and to represent a distinct lineage within the radiation of the order actinomycetales. the closest relatives of the genus nocardiopsis are members of the genera actinomadura, thermomonospora, streptosporangium, and microtetraspora. the intrageneric structure of the genus nocardiopsis is shown to consist of a highly related species group containing nocardiopsis dassonvillei, nocardiopsis alborubida, and nocardiopsis antarctica and a ... | 1996 | 8863440 |
| implementation of conditions of the inoculum stage for streptosporangium cultures. | different factors concerning the inoculum stage of cultures classified within the genus streptosporangium have been studied. these factors include a comparison among several inoculum media and sources, the influence of aeration and volume of medium in the growth of the cultures, and the effect of the inoculum size on the course of the production of two antibacterial substances. the results suggest that a slight variation in the status of the seed culture (age, biomass concentration, etc.) affect ... | 1997 | 9253759 |
| 1-hydroxy-4-methoxy-2-naphthoic acid, a herbicidal compound produced by streptosporangium cinnabarinum atcc 31,213. | | 1997 | 9510917 |
| [use of electrical impulses for selective isolation of actinomycetes f rom soil]. | a new method was elaborated for the selective isolation of actinomycetes from soil, which involves the pretreatment of soil samples with electric pulses. the treatment of soil with 3-ms electric pulses at a field intensity of 12 kv/cm2 resulted in a significant (threefold on average) increase in the proportion of representatives of rare actinomycetes isolated. this treatment regime was found to be most efficient for the selective isolation of representatives of the genera actinoplanes, micromono ... | 1998 | 9785348 |
| ah7, a non-polyenic antifungal antibiotic produced by a new strain of streptosporangium roseum. | an antibiotic (ah7) produced by streptosporangium roseum strain 214 was investigated. this compound was extracted with chloroform from the filtrate culture and purified using thin-layer chromatography and high pressure liquid chromatography procedures. the antibiotic strongly inhibited the growth of several strains of fungi and bacteria known to be plant and human pathogens. this compound differed from all other antibiotics known to be synthesized by streptosporangium spp. some of its chemical a ... | 1998 | 10093231 |
| acrocarpospora gen. nov., a new genus of the order actinomycetales. | the taxonomic position of two actinomycete strains isolated from soil was studied. the isolates contained glutamic acid, alanine and meso-diaminopimelic acid as cell-wall amino acids and menaquinone mk-9(h4) and madurose in the whole-cell hydrolysate. phylogenetic analysis revealed that the isolates belonged to the family streptosporangiaceae, but not to any known genus, and formed a monophyletic cluster with streptosporangium corrugatum. on the basis of morphological characteristics, phylogenet ... | 2000 | 10843059 |
| improved secondary metabolite production in the genus streptosporangium by optimization of the fermentation conditions. | the cultivation of strains of the genus streptosporangium in batch fermentations demonstrated that the optimal conditions for secondary metabolite production are completely different to those of the closely related genus streptomyces. the dissolved oxygen tension (po(2)) was identified as an important parameter for optimal production of secondary metabolites in submerged cultures. extreme variations of this parameter by changes in aeration (gas flow), agitation system and stirrer speed showed a ... | 2000 | 10908794 |
| [isolation of actinomycetes from soil using extremely high frequency radiation]. | a new method employing extremely high frequencies (ehfs) is proposed for the selective isolation of actinomycetes from soil. the pretreatment of soil suspensions with ehf wavelengths of 5.6 and 7.1 mm led to a nonselective isolation of actinomycetes. at the same time, the irradiation of soil suspensions within wavelength bands of 3.8-5.8 and 8-11.5 mm considerably augmented the total number of isolated actinomycetes and increased the fraction of the isolated rare genera by 2 and 7 times, respect ... | 2002 | 11910800 |
| production and characterization of a thermostable glucoamylase from streptosporangium sp. endophyte of maize leaves. | thermostable amylolytic enzymes are currently investigated to improve industrial processes of starch degradation. streptosporangium sp. an endophytic actinomycete isolated from leaves of maize (zea mays l.) showed glucoamylase production, using starch-czapek medium, and the highest rate was obtained in the initial growth phase, after incubation for 24 h at ph 8.0. maximum glucoamylase activity (158 u mg(-1) protein) was obtained at ph 4.5 and 70 degrees c. the isolated enzyme exhibited thermosta ... | 2002 | 12056484 |
| diversity of antifungal actinomycetes in various vegetative soils of korea. | diversity of actinomycetes and their antifungal activities against some plant pathogenic fungi were examined in various vegetative soils from 14 different sites in the western part of korea. actinomycete counts ranged from 1.17 x 10(6) to 4.20 x 10(6) cfu x g(-1) dried soil. a total of 1510 actinomycetes were isolated from the soil samples. streptomyces was predominant in soils with a ph range of 5.1-6.5, 9.1-13.0% moisture, and 9.1-11.0% organic matter. most micromonospora, dactylosporangium, a ... | 2002 | 12109880 |
| streptosporangium subroseum sp. nov., an actinomycete with an unusual phospholipid pattern. | a strain of streptosporangium with an unusual phospholipid pattern was isolated from yunnan province, a region in china. the isolate, designated cy-7113t, was identified by morphological and physiological properties, cell chemistry, genomic dna g+c content, dna-dna hybridization and phylogenetic analysis. based on 16s rrna gene sequencing, dna-dna hybridization, phenotypic characteristics and its unusual phospholipid pattern, it was concluded that strain cy-7113t belongs to a novel streptosporan ... | 2002 | 12148634 |
| [the application of succession analysis in combination with extremely high-frequency irradiation to the selective isolation of actinomycetes from soil]. | a new method employing succession analysis and extremely high-frequency (ehf) irradiation is proposed for the selective isolation of actinomycetes from soil. total actinomycetes were efficiently isolated from soil suspensions irradiated in the wavelength band 4.6-5.8 mm on the 14th and 45th days of succession initiated by soil wetting and from soil suspensions irradiated in the wavelength band 8-11.5 mm on the 7th day of succession. the rare actinomycete genera actinomadura, micromonospora, nono ... | 2003 | 12698804 |
| streptosporangium isolated from forest litter in the netherlands. | | 1957 | 13509645 |
| formation of nitrite and nitrate by actinomycetes and fungi. | hirsch, p. (cornell university, ithaca, new york), l. overrein, and m. alexander. formation of nitrite and nitrate by actinomycetes and fungi. j. bacteriol. 82:442-448. 1961.-nitrite was produced by strains of mycobacterium, nocardia, streptomyces, micromonospora, and streptosporangium in media containing ammonium phosphate as the sole nitrogen source. the quantity of nitrite formed was small, and the concentration was affected by ph and by the relative levels of carbon and nitrogen. aspergillus ... | 1961 | 13714587 |
| streptosporangium bovinum sp. nov. from cattle hoofs. | | 1963 | 14042846 |
| comparison of the cell-wall composition of morphologically distinct actinomycetes. | yamaguchi, tatsuro (the university of tokyo, tokyo, japan). comparison of the cell-wall composition of morphologically distinct actinomycetes. j. bacteriol. 89:444-453. 1965.-cell-wall composition of various morphologically distinct actinomycetes was studied to determine the relationship, if any, between cell-wall composition and morphological criteria in actinomycete taxonomy. the methods used were similar to those of cummins and harris. at least five types of cell-wall composition were obtaine ... | 1965 | 14255713 |
| a new species of the genus streptosporangium isolated from indian soil. | | 1965 | 14336166 |
| [a chitinolytic actinomycete complex in black soil]. | a chitinolytic actinomycete complex in chernozem soil has a specific taxonomic composition, which differs from that of the actinomycete complex which is typically isolated on standard nutrient media containing sugars and organic acids as carbon sources. the actinomycete complex that was isolated by using nutrient media with chitin as the source of carbon and nitrogen was dominated by representatives of the genus streptosporangium, and the actinomycete complex that was isolated by using nutrient ... | 2004 | 15074043 |
| streptosporangium yunnanense sp. nov. and streptosporangium purpuratum sp. nov., from soil in china. | two strains of streptosporangium were isolated from yunnan province, a region of china with specific geographical conditions that contribute to its great microbiological diversity. they were identified using a polyphasic approach employing phenotypic, genotypic and phylogenetic techniques, such as study of morphological and physiological properties, cell chemistry, g+c content of the genomic dna, dna-dna hybridization and phylogenetic analysis. the strains belong to two novel species of streptos ... | 2005 | 15774650 |
| isolation and characterization of endophytic streptomycete antagonists of fusarium wilt pathogen from surface-sterilized banana roots. | a total of 131 endophytic actinomycete strains were successfully isolated from surface-sterilized banana roots. these isolates belonged to streptomyces (n=99), streptoverticillium (n=28), and streptosporangium (n=2) spp. the remaining 2 isolates were not identified. about 18.3% of the isolates inhibited the growth of pathogenic fusarium oxysporum f. sp. cubense on banana tissue extract medium. the most frequently isolated streptomyces sp. strain s96 was similar to streptomyces griseorubiginosus. ... | 2005 | 15935565 |
| [actinomycete complexes in the rhizosphere of winter rye on soddy podzolic soil]. | the structure of actinomycete complexes in the rhizosphere of winter rye (secale cereale l.) varieties originating from different ecosystems and geographical zones was studied in field experiments on soddy podzolic soil. in addition to streptomycetes, the complexes studied contained actinomycetes of the genera micromonospora and streptosporangium, represented at high occurrence and comparable abundance rates. the rhizosphere of most of the studied rye varieties was dominated by micromonosporas. ... | 2005 | 15938405 |
| nutritional preferences of a group of streptosporangium soil isolates. | the nutritional preferences of twelve strains of genus streptosporangium were studied as a first step in the design of production media to be used in a natural products screening program. the media ingredients included 20 alpha-amino acids, 35 carbon sources (monosaccharides, oligosaccharides, polysaccharides, polyalcohols and others), 22 complex sources (meals, peptones, yeast derivatives, etc.). the growth of these strains in the presence of these culture media ingredients and the production o ... | 1999 | 16232610 |
| production of human metabolites of cyclosporin a, am1, am 4 n and am 9, by microbial conversion. | in humans, cyclosporin a (cya) is primarily metabolized to two hydroxylated (am1 and am 9) and one n-demethylated (am 4 n) derivative. to produce these derivatives, 1237 actinomycetes were screened for their ability to convert cya. among them, 89 strains (7.2%) produced these derivatives from cya. finally, dactylosporangium variesporum ifo 14104, actinoplanes sp. atcc 53771 and streptosporangium sp. af 935 were selected for the production of am1, am 4 n, and am 9, respectively. composition of th ... | 2005 | 16233807 |
| isolation of novel bacteria and actinomycetes using soil-extract agar medium. | novel bacteria were discovered using an isolation technique consisting of (i) selection of microorganisms that grew on soil-extract agar medium, but not on conventional media, and (ii) detection of small microbial colonies with a microscope. three bacterial strains thus isolated were provisionally designated shinshu-th1, -th2, -th 3, and five actinomycete strains, shinshu-ms-01, -02, -03, -04, -05, respectively. sequence analysis of their 16s rdna showed that th1 had 95--96% homology with three ... | 2005 | 16233821 |
| taxonomy and chemical characterization of antibiotics of streptosporangium sg 10 isolated from a saharan soil. | a new actinomycete strain designated sg 10, producing antimicrobial substances was isolated from an algerian soil. morphological and chemical studies indicated that strain sg 10 belonged to the genus streptosporangium. the comparison of its physiological characteristics with those of known species of streptosporangium showed significant differences with the nearest species streptosporangium carneum. analysis of the 16s rdna sequence of strain sg 10 showed a similarity level ranging between 96.3% ... | 2006 | 16338126 |
| fluorescent staining technique for nucleoid regions of streptosporangium albidum and streptosporangium brasiliense. | fluorescent staining procedures were developed for elucidating the nucleoid region in streptosporangium albidum and streptosporangium brasiliense. in these procedures, plugs of nutrient agar were inoculated with the microorganims and then covered with a sterile glass slide. the growing cells adhered to the surface of the slide and remained attached throughout the staining procedures. two separate staining methods were utilized, one with bisbenzimid h33258 and the other with auramine o. fluoresce ... | 1980 | 16345567 |
| [study on biodiversity of type i & ii polyketide synthesis genes positive microorganisms]. | some soil samples were collected from different places in yunnan provinces, china. 876 bacteria or actinomycete strains were isolated using glucose-peptone-yeast extract agar, starch-casein agar and glycerol-asparagine agar with these soil samples, of which about 100 strains belong to genus streptomyces and the others belong to rare actinomycetes or bacteria. with polyketide synthesis gene screening, 75 strains were picked up as type i & ii polyketide synthesis gene positive strains. then 10 str ... | 2005 | 16496684 |
| characterization of ge82832, a peptide inhibitor of translocation interacting with bacterial 30s ribosomal subunits. | ge82832, a secondary metabolite produced by streptosporangium cinnabarinum (strain ge82832), has been identified as a translational inhibitor by in vitro screening of a library of natural products. secondary functional tests specific for individual steps of the translational pathway demonstrated that translocation is the specific target of ge82832. chemical probing in situ demonstrated that this antibiotic protects bases a1324 and a1333 and exposes c1336 of 16s rrna, thereby indicating that its ... | 2006 | 16699167 |
| [colonization of plant rhizosphere by actinomycetes of different genera]. | the survival of environmental isolates of actinomycetes introduced with the seeds of agricultural plants in the root-free soil and in the rhizosphere and rhizoplane was studied. different strategies of colonization of the rhizosphere were revealed for the representatives of the genera streptomyces, micromonospora, and streptosporangium, the organisms typical for the moderate climate rhizosphere. the plants of winter rye (secale cereale l.) inoculated with actinomycetes were shown to have growth ... | 2006 | 16758877 |
| isolation and partial characterization of pigment-like antibiotics produced by a new strain of streptosporangium isolated from an algerian soil. | identification of a new actinomycete strain sg3, belonging to the genus streptosporangium and partial characterization of the produced antibacterial activities. | 2007 | 17584469 |
| rare actinomycete bacteria from the shallow water sediments of the trondheim fjord, norway: isolation, diversity and biological activity. | actinomycete bacteria produce a wide variety of secondary metabolites with diverse biological activities, some of which have been developed for human medicine. rare actinomycetes are promising sources in search for new drugs, and their potential for producing biologically active molecules is poorly studied. in this work, we have investigated the diversity of actinomycetes in the shallow water sediments of the trondheim fjord (norway). due to the use of different selective isolation methods, an u ... | 2007 | 17922759 |
| [diversity of actinomycetes in wuling mountain]. | to isolate new actinomycetes for discovering compounds of pharmaceutical importance. | 2008 | 18837376 |
| endophytic actinomycetes from azadirachta indica a. juss.: isolation, diversity, and anti-microbial activity. | endophytic actinomycetes from azadirachta indica a. juss. were screened and evaluated for their anti-microbial activity against an array of pathogenic fungi and bacteria. a total of 55 separate isolates were obtained from 20 plants, and 60% of these showed inhibitory activity against one or more pathogenic fungi and bacteria. actinomycetes were most commonly recovered from roots (54.5% of all isolates), followed by stems (23.6%), and leaves (21.8%). the dominant genus was streptomyces (49.09% of ... | 2009 | 18853084 |
| streptosporangium canum sp. nov., isolated from soil. | an actinomycete strain, designated hbum 170018(t), was isolated from soil from hebei province, china, and subjected to a polyphasic taxonomic analysis. this study included morphological and physiological investigations and analyses concerning cell chemistry, genomic dna g+c content, dna-dna hybridization and phylogeny. the data obtained were consistent with the assignment of strain hbum 170018(t) to the genus streptosporangium and were confirmed by the results of 16s rrna gene sequence analysis. ... | 2009 | 19542128 |
| herbidospora sakaeratensis sp. nov., isolated from soil, and reclassification of streptosporangium claviforme as a later synonym of herbidospora cretacea. | an actinomycete strain, dmkua 205(t), was isolated from a soil sample collected from the sakaerat biosphere reserve in nakhonratchasima province, thailand. the novel strain produced short chains of non-motile spores on the tips of long sporophores branching from the vegetative hyphae. the morphological and chemotaxonomic properties of this new isolate corresponded to those of members of the genus herbidospora. furthermore, 16s rrna gene sequence analysis showed that the strain was closely relate ... | 2011 | 20435750 |
| antibiotic r2, a new angucyclinone compound from streptosporangium sp. sg3. | | 2010 | 20940726 |
| determination of sibiromycin and its natural derivatives using new analytical and structural approaches. | a new separation and quantification method using ultra high-performance liquid chromatography (uhplc) with uv detection was developed for the detection of sibiromycin in fermentation broth of streptosporangium sibiricum. the solid phase extraction method based on cation-exchange was employed to pre-concentrate and purify fermentation broth containing sibiromycin prior to uhplc analysis. the whole assay was validated and showed a linear range of detector response for the quantification of sibirom ... | 2010 | 21111423 |
| complete genome sequence of streptosporangium roseum type strain (ni 9100). | streptosporangium roseum crauch 1955 is the type strain of the species which is the type species of the genus streptosporangium. the 'pinkish coiled streptomyces-like organism with a spore case' was isolated from vegetable garden soil in 1955. here we describe the features of this organism, together with the complete genome sequence and annotation. this is the first completed genome sequence of a member of the family streptosporangiaceae, and the second largest microbial genome sequence ever dec ... | 2010 | 21304675 |
| spoxazomicins a-c, novel antitrypanosomal alkaloids produced by an endophytic actinomycete, streptosporangium oxazolinicum k07-0460(t). | three novel antitrypanosomal alkaloids, named spoxazomicins a-c, were isolated by silica gel column chromatography and hplc from the culture broth of a new endophytic actinomycete species, streptosporangium oxazolinicum k07-0460(t). the structures of the spoxazomicins were elucidated by nmr and x-ray crystal analyses and shown to be new types of pyochelin family antibiotic. spoxazomicin a showed potent and selective antitrypanosomal activity with an icôéàôéç value of 0.11ôçë++g mlôü+-¦ in vitro ... | 2011 | 21386848 |
| streptosporangium oxazolinicum sp. nov., a novel endophytic actinomycete producing new antitrypanosomal antibiotics, spoxazomicins. | an actinomycete strain k07-0460(t) producing new antitrypanosomal antibiotics, spoxazomicins, was isolated from the roots of a variety of orchid collected in the subtropical okinawa prefecture. the 16s ribosomal rna gene sequence analysis indicated that the strain belonged to the genus streptosporangium and showed high similarities with s. amethystogenes subsp. amethystogenes dsm 43179(t) (99.4%), s. amethystogenes subsp. fukuiense ifo 15365(t) (99.2%) and s. longisporum dsm 43180(t) (98.7%). th ... | 2011 | 21386852 |
| herbidospora mongoliensis sp. nov., isolated from soil and reclassification of herbidospora osyris and streptosporangium claviforme as synonyms of herbidospora cretacea. | a gram-positive, aerobic actinomycete, strain mn08-a0118t, which produced short chains of nonmotile spores on the tips of long sporophores and formed moderate yellow brown colonies with branched substrate mycelium was studied in detail for its taxonomic position. on the basis of 16s rrna gene sequence similarity studies, strain mn08-a0118t was grouped into the genus herbidospora, being most closely related to streptosporangium claviforme (98.2 %), herbidospora osyris (98.2 %), herbidospora dalie ... | 2011 | 22140157 |