Isolation and characterization of a co-producer of fengycinsand surfactins, endophytic Bacillus amyloliquefaciens ES-2, from Scutellaria baicalensis Georgi

详细信息    查看全文

• 作者：Lijun Sun ; Zhaoxin Lu ; Xiaomei Bie ; Fengxia Lu and Shengyuan Yang
• 关键词：Fengycin ; Surfactin ; Bacillus amyloliquefaciens ; Antimicrobial activity ; Endophyte
• 刊名：World Journal of Microbiology and Biotechnology
• 出版年：2006
• 出版时间：December, 2006
• 年：2006
• 卷：22
• 期：12
• 页码：1259-1266
• 全文大小：205 KB

文摘

An endophytic bacterium was isolated from Chinese medicinal plant Scutellaria baicalensis Georgi. The phylogenetic and physiological characzterization indicated that the isolate, strain ES-2, was Bacillus amyloliquefaciens, which produced two families of secondary metabolites with broad-spectrum antibacterial and antifungal activities. Culture filtrate of ES-2 displayed antagonism against some phytopathogenic, food-borne pathogenic and spoilage bacteria and fungi owing to the existence of antimicrobial compounds. A HPLC-MS analysis showed two series of ion peaks from the culture filtrate. A further electrospray ionization/collision-induced dissociation spectrum revealed that the two series ion peaks represented different fengycin homologues and surfactin homologues, respectively, which had a potential for food preservation and the control of several fungal plant diseases.