Four New Species of the Genus Actinokineospora: Actinokineospora inagensis sp. nov., Actinokineospora globicatena sp. nov., Actinokineospora terrae sp. nov., and Actinokineospora diospyrosa sp. nov.

Abstract

The taxonomic positions of motile actinomycetes that were isolated from soil and fallen leaves obtained from around a pond and a lake and from fallen leaves of persimmons were studied. The aerial mycelia of all of the isolates exhibited fragmentation during growth, and motile spores arranged in chains were produced within the mycelia. Sporangia were not observed. These isolates contained menaquinone MK-9(H4), their DNA G+C contents were 69 to 70 mol%, they contained glutamic acid, glycine, alanine, and meso-diaminopimelic acid as cell wall amino acids, and arabinose and galactose were found in their whole-cell hydrolysates. These taxonomic characteristics are the same as those of Actinokineospora riparia. On the basis of morphological, physiological, and chemotaxonomic characteristics and DNA-DNA hybridization data, we propose the following four new species of the genus Actinokineospora for these strains: Actinokineospora inagensis for a single isolate, type strain YU4-1 (= IFO 15663); Actinokineospora globicatena for isolates YU5-1, YU6-1, YU6-2, YU7-1, and YU7-2 (type strain, YU6-1 [= IFO 15664]); Actinokineospora terrae for a single isolate, type strain YU6-3 (= IFO 15668); and Actinokineospora diospyrosa for a single isolate, type strain YU8-1 (= IFO 15665).