四川农业大学学报 ›› 2020, Vol. 38 ›› Issue (05): 572-579.doi: 10.16036/j.issn.1000-2650.2020.05.010

• • 上一篇    下一篇

解磷菌623-3的鉴定、培养条件优化及应用

于淼, 吴红艳, 冯健, 方新, 王智学   

  1. 辽宁省微生物科学研究院,辽宁 朝阳 122000
  • 收稿日期:2020-06-08 出版日期:2020-10-28 发布日期:2021-02-05
  • 作者简介:于淼,副研究员,主要从事土壤微生态调节研究,E-mail:52638019@QQ.com。
  • 基金资助:
    农业面源污染物削减关键技术开发(2019020171-JH1/103-01-03); 利用GFP标记研究秸秆还田对磷细菌土壤定殖能力的影响(20180045)

Identification, Optimization of Culture Conditions and Application of Dephosphorizing Bacteria 623-3

YU Miao, WU Hongyan, FENG Jian, FANG Xin, WANG Zhixue   

  1. Microbial Research Institute of Liaoning Province,Chaoyang 122000,Liaoning,China
  • Received:2020-06-08 Online:2020-10-28 Published:2021-02-05

摘要: 【目的】以一株解磷菌623-3为研究对象,对其进行鉴定、培养条件优化及应用的初步研究。【方法】通过形态学观察、生理生化测试及16SrDNA序列进行同源性比较,初步鉴定623-3为恶臭假单胞菌(Pseudomonas putida)。在单因素试验基础上,使用Box-Behnken响应面优化培养条件。【结果】确定其最佳培养条件为摇床转速182.304 r/min,初始pH值为7.028,接种量为2.174%,培养时间为5.934 d。并对方程的拟合程度进行了验证。利用该菌株进行了室内盆栽番茄试验,证明其土壤定殖率高,并且对番茄幼苗有明显促生长作用。【结论】菌株623-3土壤定殖率高,亲和力好,促番茄幼苗生长作用明显,具有一定的应用潜力。

关键词: 解磷菌, 假单胞菌, 培养条件, 优化, 应用

Abstract: 【Objective】 In this paper, a dephosphorizing bacterium 623-3 was identified, its culture conditions were optimized and its application was preliminarily studied. 【Method】 Through morphological observation and molecular biological identification, the homology of 16SrDNA sequence was compared with blast software, and 623-3 was preliminarily identified as Pseudomonas putida. On the basis of single factor experiment, the optimal culture conditions were determined by box Behnken response surface. 【Result】 The optimal culture conditions were as follows: rotating speed of shaking table was 182.304 r/min, initial pH value was 7.028, inoculation amount was 2.174%, culture time was 5.934 d. This strain was used in the indoor tomato pot experiment to prove its colonization rate and growth promoting effect on tomato seedlings. 【Conclusion】 As a high efficient dephosphorizing bacteria, strain 623-3 can be used as an excellent target strain of Agricultural Microorganisms for further study.

Key words: dephosphorizing bacteria, pseudomonas, culture conditions, optimization, application

中图分类号: 

  • Q939.9