白蚁共生放线菌的抗菌活性筛选及菌株BY02的初步鉴定

摘要

利用平板分离法从黑翅土白蚁中分离出l0株共生放线菌,活性筛选表明其中菌株BY02具有较好的抗菌活性,对所有供试菌的抑制率均大于80%,进一步研究表明其活性物质主要集中在中等极性部位,经形态学观察和16SrRNA序列分析初步确定该菌株为Streptomyces parvulus.BY02作为微生物源杀菌剂值得进一步研究.%Ten actinomycete strains were isolated from termite (Odontotermes formosanus) by plate separation method. Among them strain BY02 showed the best antifungal activity with more than 80％ inhibiting rate against all pathogens tested. Further research showed that its main antifungal ingredients were at moderate polar part. BY02 was initially identified as Streptomyces parvulus by the morphological features and 16S rRNA sequence analysis. As a microbio -source fungicide, it was worth to further study.