金钱松内生真菌JJ18杀螺作用实验研究

目的:研究金钱松内生真菌JJ18的杀螺作用、活性部位及该菌株杀螺活性的传代稳定性,从而探索其应用的可能性。方法:按照WHO的杀螺剂浸泡试验法观察不同处理下JJ18发酵液杀螺效果。结果:JJ18菌株发酵液的活性成分集中在胞外液,当胞外液浓度10%时,72h杀螺率接近90%,且发酵外液成盐后有良好的耐热性,强光照下7 d内活性物质基本不改变,菌株传代稳定,杀螺活性成分集中在正丁醇萃取部位。结论:金钱松内生真菌JJ18代谢产物的杀螺活性,有开发应用的可能性。

Experimental research on molluscicidal effect of endophyte JJ18 from Pseudolarix amabilis

OBJECTIVE: To research molluscicidal effect activity, active components and stable passage of endophyte JJ18 from Pseudolarix amabilis and examine the possibility for practical application. METHOD: Molluscicidal effect test was performed according to the immersion test method suggested by WHO. RESULT: Immersion test with JJ18 broth showed that the active components were extracellular moiety of the broth and that 10% concentration solution could kill nearly 90% snail immersed after 72 h, the salified broth has favourable thermostabily and photostability and showed that JJ18 has stable passage and its active components concentrate in the extract of n-butanol. CONCLUSION: The metabolite of endophyte JJ18 has activity for molluscicidal effect and potential for application.