Screening and Identification of Actinomycetes Antagonistic to Fusarium oxysporumand Phomopsis asparagi

Seventy-six strains of actinomycete were isolated from the soil in Jinggangshan area in Jiangxi province.S15was found to be strongly antagonistic to Fusarium oxysporumand Phomopsis asparagi.The inhibition effect of S15fermentation filtrate was significant against Magnaporthe oryzae, Botrytis cinerea, Colletotrichum truncatum, Rhizoctonia solani, Colletotrichum gloeosporioides, Cladosporium cucumerinum, Alternaria solani, Colletotrichum orbiculare and Setosphaeria turcica.According to its morphology, cultural characteristics, physiological and biochemical characteristics and 16SrDNA sequence, S15 were identified to be Streptomyces bottropensis.