Nonomuraea dietzii sp nov.

The taxon 'Sebekia benihana', an actinomycete of industrial significance, h as been subjected to a polyphasic taxonomic study. 165 rDNA sequence analys es of strain DSM 44320 (= NRRL 11111) revealed 100% similarity to the 165 r DNA sequence of Nonomuraea roseola DSM 43767(T) and high values (> 98.5%) t o some other species of this genus. DNA-DNA similarity values of less than 31% observed between strain DSM 44320 and N, roseola DSM 43767T, Nonomuraea recticatena DSM 43937(T) and Nonomuraea africana DSM 43748(T) indicate tha t this strain represents an individual genospecies. Differences between str ain DSM 44320(T) and the 16 validly described Nonomuraea species occur in t he primary structure of the 165 rDNA, the physiological test profile, the m orphology of mycelium and the spore surface and the colour of substrate myc elium. The only strain of 'S. benihana', DSM 44320(T) (= NRRL 11111(T)), is proposed as the type strain of a new species of the genus Nonomuraea, Nono muraea dietzii sp. nov.