白蚁链霉菌ACT-2菌株抗菌谱及其发酵液抑菌稳定性分析  

Antimicrobial spectrum of Streptomyces termitum strain ACT-2 and antibacterial stability of its fermentation broth

作　　者：宋迤明[1] 张晓阳 董夏梦[1] 韦凤[1] 蓝丽精 蔡琪敏[1] 蒋冬花[1] 

机构地区：[1]浙江师范大学化学与生命科学学院,浙江金华321004 [2]金华市环境检测中心,浙江金华321013

出　　处：《浙江师范大学学报（自然科学版）》2012年第3期326-329,共4页Journal of Zhejiang Normal University:Natural Sciences

基　　金：浙江省公益性技术应用研究计划项目(2010C32076)

摘　　要：测定了白蚁链霉菌(Streptomyces termitum)ACT-2菌株的抗菌谱.结果表明:ACT-2菌株对细菌类病原体有较强的拮抗能力,对真菌类病原菌抑菌效果不显著.以水稻白叶枯病菌(Xanthomonas oryzae pv.oryzae)P6生理小种为指示菌,分析了ACT-2菌株发酵液的抑菌稳定性.ACT-2菌株发酵液抑菌稳定性实验显示:在温度低于80℃,4 000 lx光照强度下,ACT-2菌株发酵液能保持稳定的抑菌能力;温度高于90℃时,其发酵液的抑菌能力开始降低;经酸碱处理后,其发酵液的抑菌能力出现了明显的降低.The results of bacteriostasis experiments demonstrated that strain ACT-2 suppressed a wide range of bacterial pathogens in vitro, while no obvious antimicrobial activities towards fungal pathogens. Antibacterial stability of Streptomyces termitum strain ACT-2 fermentation broth was studied while Xanthomonas oryzae pv. oryzae physiological strain P6 was chosen as indicator bacteria. The fermentation broth could show obvious bacteriostatic activity when the tempreture was below 80℃ or exposured in the 4 000 lx illuminant ; the diameter of inhibition zone decreased when the tempreture came up to 90 ℃. The fermentation broth was sensitive to acidity and alkalinity, the activity decreased after treatment.

关 键 词：白蚁链霉菌 白叶枯病 抗菌谱 稳定性 

分 类 号：Q939.92[生物学—微生物学]