title: Streptomyces speibonae sp. nov., a novel streptomycete with blue substrate mycelium isolated from South African soil.
abstract: An actinomycete with blue substrate mycelium was isolated from a soil sample in Cape Town, South Africa, and designated strain PK-Blue(T). The colour of the substrate mycelium was not sensitive to changes in pH. The organism produced hairy spores in Spirales-type spore chains. Chemical taxonomy indicated that it belonged to the genus Streptomyces. Strain PK-Blue(T) produced no diffusible pigments other than melanin, grew at 45 degrees C, did not degrade adenine and exhibited no antibacterial activity against Enterococcus faecium, Escherichia coli or Pseudomonas aeruginosa. Analysis of its 16S rRNA gene sequence and the results of physiological tests showed that strain PK-Blue(T) (= DSM 41797(T) = ATCC BAA-411(T)) represents the type strain of a novel species of Streptomyces, for which the name Streptomyces speibonae sp. nov. is proposed.
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: Donovan S
authors.initials: DS
authors.lastname: Porter
authors.affiliation: Department of Molecular and Cell Biology, University of Cape Town, Private Bag 1, Rondebosch, 7701 Cape Town, South Africa.
authors.forename: Clifford
authors.initials: C
authors.lastname: Omorogie
authors.affiliation: Department of Molecular and Cell Biology, University of Cape Town, Private Bag 1, Rondebosch, 7701 Cape Town, South Africa.
authors.forename: J Motsamai
authors.initials: JM
authors.lastname: Pule
authors.affiliation: Department of Molecular and Cell Biology, University of Cape Town, Private Bag 1, Rondebosch, 7701 Cape Town, South Africa.
authors.forename: Thembelani
authors.initials: T
authors.lastname: Kwetane
mesh_terms: D015373:Bacterial Typing Techniques; D004275:DNA, Ribosomal / Q000032:analysis; D008543:Melanins / Q000378:metabolism; D008969:Molecular Sequence Data; D010641:Phenotype; D010860:Pigments, Biological / Q000378:metabolism*; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D017422:Sequence Analysis, DNA; D012988:Soil Microbiology; D013019:South Africa; D013171:Spores, Bacterial / Q000502:physiology; D013302:Streptomyces / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification / Q000502:physiology
chemical_list: D004275:DNA, Ribosomal; D008543:Melanins; D010860:Pigments, Biological; D012336:RNA, Ribosomal, 16S