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Int J Syst Evol Microbiol 54 (2004), 1531-1535; DOI  10.1099/ijs.0.02738-0
© 2004 International Union of Microbiological Societies

Streptomyces africanus sp. nov., a novel streptomycete with blue aerial mycelium

Paul R. Meyers, Candice M. Goodwin, Jessica A. Bennett, Bronwen L. Aken, Claire E. Price and Jason M. van Rooyen

Department of Molecular and Cell Biology, University of Cape Town, Private Bag 1, Rondebosch, 7701, Cape Town, South Africa

Correspondence
Paul R. Meyers
pmeyers{at}science.uct.ac.za

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 °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 Streptomyces africanus sp. nov. is proposed. The type strain is CPJVR-HT (=NRRL B-24143T=DSM 41829T).

Abbreviations: DAP, diaminopimelic acid; ISP, International Streptomyces Project

Published online ahead of print on 13 February 2004 as DOI 10.1099/ijs.0.02738-0.

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of Streptomyces africanus CPJVR-HT is AY208912.






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