ZHANG Shuying,QU Tianli,ZHAO Chuande.Optimizing Fermentation Condition for Antagonistic JM-3 Strain and Protection Effect Against Valsa ceratosperma[J].Northern Horticulture,2018,42(04):54-59.[doi:10.11937/bfyy.20171622]
JM-3菌株抗菌物质发酵条件优化及对苹果腐烂病的防效
- Title:
- Optimizing Fermentation Condition for Antagonistic JM-3 Strain and Protection Effect Against Valsa ceratosperma
- 文献标志码:
- A
- 摘要:
- 以从剑麻中筛选出的1株对苹果腐烂病有较强拮抗作用的菌株JM-3为研究对象,采用单因子试验和正交实验对菌株JM-3的最适发酵培养基成分及发酵条件进行优化,并测定了其对苹果离体枝条腐烂病的防治效果,以期为该菌株的工业化生产提供参考依据。结果表明:菌株JM-3培养基各组分最佳配比为葡萄糖30 g?L-1,蛋白胨20 g?L-1,K2HPO4 1.0 g?L-1,最佳发酵条件为初始pH 7,装液量150 mL或100 mL/250 mL三角瓶,培养温度33 ℃,培养时间120 h。在最佳发酵培养基和培养条件下,菌株JM-3抑菌能力提高32.4%。JM-3发酵液不能对苹果离体枝条腐烂病起到治疗作用,但能够显著预防腐烂病斑扩展,提前24~48 h接种JM-3发酵液的预防保护效果最好,与对照农药苯醚甲环唑相比无显著差异。
- Abstract:
- Strain JM-3 isolated from sisal was used as study object,the single factor experiments and orthogonal experiments were adopted to optimize the liquid fermentation medium and fermentation conditions of JM-3,and the control effect on apple excised twigs against Valsa ceratosperma was tested,in order to provide reference for establishing industrial production.The results showed that optimum medium was glucose 30 g?L-1,peptone 20 g?L-1,K2HPO4 1.0 g?L-1.The optimal fermentation conditions were initial pH 7,medium capacity 150 mL or 100 mL/250 mL,temperature 33 ℃,fermentation time 120 hours.Inhibitory activity of strain JM-3 fermentation solution increased 32.4% under the optimum fermentation medium and culture conditions.The fermentative liquid of strain JM-3 could not cure canker lesion expansion,but it could prevent canker lesion expansion significantly.The preventive protection of strain JM-3 fermentative liquid was the best when it was inoculated on apple twigs before 24-48 hours,and its protective effect had no significant difference with difenoconazole.
参考文献/References:
[1]陈志谊,刘永峰,陆凡.水稻纹枯病生防菌Bs-916产业化关键技术[J].植物保护学报,2004,31(3):230-234.
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备注/Memo
第一作者简介:张淑颖(1980-),女,博士,实验师,研究方向为植物病害的生物防治。E-mail:shuyingzhang@163.com.