摘要
枯草芽孢杆菌分泌的抗菌物质在植物病害防治方面具有重要作用。在芽孢形成初期阶段,枯草芽孢杆菌通过"同种相食"(Cannibalism)推迟芽孢形成:准备形成芽孢的细胞产生并释放细菌毒素skf和sdp,杀死未形成芽孢的同类细胞,死亡细胞释放的营养可供准备形成芽孢的细胞利用,导致芽孢形成推迟。细菌毒素skf和sdp具有广谱杀菌性。综述"同种相食"的基因调控机制,该过程中新型毒素的产生及免疫机制,"同种相食"生物意义及毒素skf、sdp在生物防治应用前景。对于枯草芽孢杆菌生物防治制剂开发具有实际意义。
Antibacterial compounds, produced by Bacillus subtilis, play a vital role in biological control of plant diseases. During the early stages of sporulation, B. subtilis can delay the commitment to sporulation by ＆quot;Cannibalism＆quot;. Sporulating cells produce toxins skf and sdp to kill the non-sporulating sister cells. The nutrients released by the dead cells can be used for the growth of sporulating cells, which results in the delay of sporulation. skf and sdp are broad-spectrum antibacterial toxics. This review outlines the genetic regulation of ＆quot;Cannibalism＆quot;, the production of novel antibacterial toxins in＆quot;Cannibalism＆quot;, immunity mechanisms to these toxins, the biological significance of cannibalism, and the application prospects of skf and sdp in biological control.
出处
《东北农业大学学报》
CAS
CSCD
北大核心
2014年第10期122-128,共7页
Journal of Northeast Agricultural University
基金
杭州市科协人才专项资金(院士工作站建设项目)
