1957 Volume 10 Issue 2 Pages 39-45
Streptomyces No. 455D1, which was isolated from the soil of Chichibu district in Saitama Prefecture, was found to produce 2 antifungal substances. One of them was confirmed to be a polyene antibiotic belonging to fungicidin-rimocidin- chromin group11).
The other was studied in detail and confirmed to be a new antibiotic on the basis of its physical, chemical and biological properties. This antibiotic was named blastmycin. It shows specifically strong inhibition against Piricularia oryzae which causes a terrible disease on the rice plant. The strain No. 455D1 seemed to be a new species of streptomyces and was named Streptomyces blastmyceticus.
