Control Efficacy of Streptomyces sp. SY-L12 and Chitooligosaccharide on Kiwifruit Bacterial Canker,P

• 作 者: Wang Fang Wei Tingting Xin Xuecheng Jiao Jiao Li Jiguang Fan Jinzhe Zhou Fan
• 机 构: Shenyang Research Institute of Chemical Industry Co.Ltd.,
• 出 处: Plant Diseases and Pests
• 发表日期: 2017年04期
• 关键词: fermentation hydroxide assessed cultivation shaking priority inhibit prevention

[Objective]The paper was to develop a priority scheme for prevention and control of kiwifruit bacterial canker with biological agents. [Method]The inhibitory effect of Streptomyces sp. SY-L12 on the growth of Pseudomonas syringae pv. actinidiae were assessed using liquid co-culture and inhibition zone methods. The control efficiency of Streptomyces sp. fermentation broth against kiwifruit bacterial canker was studied via potted trial. [Result] As Streptomyces sp. SYL12 was incubated for 24 h,the growth inhibition rate of its fermentation broth on P. syringae pv. actinidiae was 94. 0%. The control efficiency of fermentation broth against P. syringae pv. actinidiae was the best of 85. 4% in potted trial when Streptomyces sp. SY-L12 grew at 28℃,150 rpm for 8-9 d,better than that of control agent copper hydroxide. The control efficiency was improved as the agent was mixed with 1 mg/L chitooligosaccharide. [Conclusion] Streptomyces sp.SY-L12 could effectively inhibit the growth of P. syringae pv. actinidiae,and can be developed as biological agent against kiwifruit bacterial canker.

[Objective] The paper was to develop a priority scheme for prevention and control of kiwifruit bacterial canker with biological agents. [Method] The inhibitory effect of Streptomyces sp. SY-L12 on the growth of Pseudomonas syringae pv. Actinidiae were assessed using liquid co The control efficiency of Streptomyces sp. fermentation broth against kiwifruit bacterial canker was studied via potted trial. [Result] As Streptomyces sp. SYL12 was incubated for 24 h, the growth inhibition rate of its fermentation broth on P syringae pv. actinidiae was 94.0%. The control efficiency of fermentation broth against P. syringae pv. actinidiae was the best of 85. 4% in potted trial when Streptomyces sp. SY-L12 grew at 28 ° C, 150 rpm for 8-9 d, better than that of control agent copper hydroxide. The control efficiency was improved as the agent was mixed with 1 mg / L chitooligosaccharide. [Conclusion] Streptomyces sp. SY-L12 could effectively inhibit the growth of P. syri ngae pv. actinidiae, and can be developed as biological agent against kiwifruit bacterial canker.