Genus distribution of soil actinomycetes on different depth = 깊이에 따른 토양 방선균의 속 다양성 분포

Abstract

A total 656 actinomycete strains were isolated from sixty soil samples collected at Chungnam province. The samples were randomly selected from five different soil types (paddy field, field, forest, grassland, and riverside) and three zones of different depths (surface, 10 cm, and 50cm deep). All of these isolates were identified to the level of genus based on morphological and physiological characteristics. As the results, 223, 242, and 191 strains were isolated from soil samples of surface, 10 cm and 50 cm deep, respectively. Accor- ding to the soil depth, Nocardioforms, Streptosporangium, and Nocardiopsis were dominant at surface, Streptomyces at surface and 10 cm deep, while Micromonospora and Microbispora were somewhat do- minant at both 10 cm and 50 cm deep.