Screening, Identification and Biocontrol Effect of Antagonistic Streptomyces Strain Tra69 against Tobacco Bacterial Wilt

• 作者: CHEN Xue DONG An-wei HAN Xin-yu KONG Fan-yu LUO Ding-qi ZHANG Cheng-sheng
• 来源期刊: 植物病虫害研究：英文版
• 学科: 农学
• 关键词: 植物病虫害 预防 植物保护 植物检疫
• 年，卷（期）: 2012,（1）
• 页码范围: 10-13
• 页数: 4页
• 分类号: S4

摘要

[Objective] The paper was to screen the biocontrol agents with good control effects against tobacco bacterial wilt. [Method] The strains with antagonistic activity against tobacco bacterial wilt were isolated from 36 copies of rhizosphere soil sample. The strain with best inhibition effect was identified, and carried out pot test and growth-promoting experiment. [Result] The strain with best inhibtion effect was Tra69, which was identified to be Streptomyces flavogriseus. The fermentation liquid of Tra69 had good control effect against Ralstonia solanacarum, and also had good growth-promoting effect on tobacco. [Conclusion] Tra69 was the biocontrol agent with excellent control effect against R. solanacarum, which could be further developed and used in biological control against tobacco diseases.