title: Streptomyces africanus sp. nov., a novel streptomycete with blue aerial mycelium.
abstract: An actinomycete with blue aerial mycelium and yellow substrate mycelium was isolated from a suburban soil sample collected in Cape Town, South Africa and named strain CPJVR-HT. The colour of the substrate mycelium was not sensitive to changes in pH. The organism produced spiny spores in Spirales spore chains. Chemical taxonomy indicated that it is a member of the genus Streptomyces. Strain CPJVR-HT grew at 45 degrees C and did not produce melanin or any diffusible pigments. It exhibited weak antibacterial activity against a clinical isolate of Enterococcus faecium, but no antibacterial activity against Escherichia coli ATCC 25922 or Pseudomonas aeruginosa ATCC 27853. Analysis of its 16S rRNA gene sequence, DNA-DNA hybridization studies and the results of physiological tests showed that this strain represents a novel species of Streptomyces, for which the name Corynebacterium aurimucosum [corrected] nov. is proposed. The type strain is CPJVR-HT (= NRRL B-24243T [corrected] = DSM 41829T).
authors.affiliation: Department of Molecular and Cell Biology, University of Cape Town, Private Bag 1, Rondebosch, 7701, Cape Town, South Africa.
authors.forename: Paul R
authors.initials: PR
authors.lastname: Meyers
authors.affiliation: Department of Molecular and Cell Biology, University of Cape Town, Private Bag 1, Rondebosch, 7701, Cape Town, South Africa.
authors.forename: Candice M
authors.initials: CM
authors.lastname: Goodwin
authors.affiliation: Department of Molecular and Cell Biology, University of Cape Town, Private Bag 1, Rondebosch, 7701, Cape Town, South Africa.
authors.forename: Jessica A
authors.initials: JA
authors.lastname: Bennett
authors.affiliation: Department of Molecular and Cell Biology, University of Cape Town, Private Bag 1, Rondebosch, 7701, Cape Town, South Africa.
authors.forename: Bronwen L
authors.initials: BL
authors.lastname: Aken
authors.affiliation: Department of Molecular and Cell Biology, University of Cape Town, Private Bag 1, Rondebosch, 7701, Cape Town, South Africa.
authors.forename: Claire E
authors.initials: CE
authors.lastname: Price
authors.affiliation: Department of Molecular and Cell Biology, University of Cape Town, Private Bag 1, Rondebosch, 7701, Cape Town, South Africa.
authors.forename: Jason M
authors.initials: JM
authors.lastname: van Rooyen
mesh_terms: D000898:Antibiosis; D015373:Bacterial Typing Techniques; D004269:DNA, Bacterial / Q000737:chemistry / Q000302:isolation & purification; D004275:DNA, Ribosomal / Q000737:chemistry / Q000302:isolation & purification; D016984:Enterococcus faecium / Q000254:growth & development; D004926:Escherichia coli / Q000254:growth & development; D020459:Genes, rRNA; D008969:Molecular Sequence Data; D009693:Nucleic Acid Hybridization; D010802:Phylogeny; D010860:Pigments, Biological / Q000096:biosynthesis*; D011550:Pseudomonas aeruginosa / Q000254:growth & development; D012329:RNA, Bacterial / Q000235:genetics; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D017422:Sequence Analysis, DNA; D012988:Soil Microbiology; D013019:South Africa; D013171:Spores, Bacterial / Q000166:cytology; D013302:Streptomyces / Q000145:classification* / Q000166:cytology / Q000302:isolation & purification* / Q000502:physiology / Q000648:ultrastructure; D013696:Temperature
chemical_list: D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D010860:Pigments, Biological; D012329:RNA, Bacterial; D012336:RNA, Ribosomal, 16S