JSD-1 was isolated from soil and rotten straw collected under stooks stacked for several years in natural condition of Pujiang town, southwest of Shanghai, China. About 1 g sample (fresh weight) was added to 100 ml enrichment medium and shaken at 150 rpm. About 10 ml enriched liquid was transferred to another 100 ml enrichment medium 5 days later, which repeated four times totally. The final liquid was well kept and used to isolate as follows.