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经筛选获得链霉菌代谢产物Ｓ－９２１、Ｓ－３１２，它们对菇类病害真菌的抗菌活力强，尤其对危害严重的木霉和链孢霉，最低抑菌浓度（ＭＩＣ）在２μｇ／ｍＬ以下，而对食用菌本身的毒性很低，ＭＩＣ在５００μｇ／ｍＬ以上，这些结果表明Ｓ－９２１和Ｓ－３１２具有良好的选择毒性。
Streptomyces metabolites S-921 and S-312 were screened for their strong antibacterial activities against mushroom fungi, especially against Trichoderma and Streptomyces which were seriously endangered. The minimum inhibitory concentration (MIC) was below 2μg / mL , While the toxicity to edible fungus itself is very low, MIC is above 500μg / mL. These results show that S-921 and S-312 have good selective toxicity.