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中国生物防治学报 ›› 2022, Vol. 38 ›› Issue (4): 904-910.DOI: 10.16409/j.cnki.2095-039x.2022.04.013

• 主要经济作物重要及新成灾害绿色综合防控技术专栏 • 上一篇    下一篇

解淀粉芽胞杆菌DP03-4发酵条件研究

王翠1, 王妍1, 戴蓬博2, 梁晓飞1, 张荣1, 孙广宇1   

  1. 1. 西北农林科技大学植物保护学院, 杨凌 712100;
    2. 河北农业大学植物保护学院, 保定 071000
  • 收稿日期:2022-06-28 发布日期:2022-08-11
  • 通讯作者: 孙广宇,教授,E-mail:sgy@nwsuaf.edu.cn
  • 作者简介:王翠,硕士研究生,E-mail:honeysun123456@163.com
  • 基金资助:
    国家重点研发计划(2019YFD1002002);National Key R&D Program (2019YFD1002002)

Optimization of Fermentation Conditions of Bacillus amyloliquefaciens DP03-4,a Biocontrol Agent of Apple Tree Diseases

WANG Cui1, WANG Yan1, DAI Pengbo2, LIANG Xiaofei1, ZHANG Rong1, SUN Guangyu1   

  1. 1. College of Plant Protection, Northwest A&F University, Yangling 712100, China;
    2. College of Plant Protection, Hebei Agricultural University, Baoding 071000, China
  • Received:2022-06-28 Published:2022-08-11

摘要: 前期在苹果心室拮抗菌中筛选出一株解淀粉芽胞杆菌DP03-4,该菌株在平板试验中对多种苹果病原菌表现明显拮抗作用,田间也表现较好的防治效果。本试验以菌体生长量和抑菌圈大小为指标,应用多因素正交试验和发酵条件单因素筛选对该菌株的培养基成分配比及培养条件进行优化。得到最适培养基配方为酵母浸粉 15 g,NaCl 2.5 g,葡萄糖10 g,H2O 1000 mL;最适的培养条件为温度30℃~35℃,摇瓶装液量75 mL/250 mL,摇床转速210 r/min,初始pH值6,接种量4%。发酵条件优化后的发酵液较优化前LB发酵液菌体量提高43.7%,抑菌活性提高51.4%。为该菌株的进一步开发利用提供了基础数据。

关键词: 解淀粉芽胞杆菌, 发酵条件, 正交试验, 生物量, 抑菌活性

Abstract: A Bacillus amyloliquefaciens strain DP03-4 with biocontrol activity demonstrated to be broad-spectrum antagonistic toward several apple pathogens in field in previous study.In this study,the medium and fermentation conditions of the strain were optimized to increase its biomass and antagonistic activity by Orthogonal design.The optimized medium composition was yeast extract (1.5%),NaCl (0.25%) and glucose (1%).The optimized shake-culture conditions were temperature 30℃-35℃,medium volume 75 mL/250 mL,shake speed 210 r/min,initial pH value 6-7,and inoculation ratio 4%.Under the optimized culture conditions,the biomass and antagonistic activity of the fermentation broth were increased by 43.7% and 51.4%,respectively.The above results supplied information for further development and utilization of the strain.

Key words: Bacillus amyloliquefaciens, fermentation condition, orthogonal experiment design, biomass, antagonistic activity

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