生物技术通报 ›› 2017, Vol. 33 ›› Issue (10): 178-183.doi: 10.13560/j.cnki.biotech.bull.1985.2017-0252

• 研究报告 • 上一篇    下一篇

污染河流土著异养硝化菌的筛选及其鉴定

刘攀龙1, 于鲁冀1, 2, 李廷梅1, 范铮1, 陈涛1   

  1. 1. 郑州大学环境政策规划评价研究中心,郑州 450002
    2. 郑州大学水利与环境学院,郑州 450001
  • 收稿日期:2017-03-31 出版日期:2017-10-29 发布日期:2017-10-29
  • 作者简介:刘攀龙,男,硕士,研究方向:水污染控制理论与技术,环境微生物;E-mail:lpl6955@126.com
  • 基金资助:
    国家水体污染控制与治理科技重大专项(2012ZX07204-001-004)

Isolation and Identification of Indigenous Heterotrophic Denitrifying Bacteria from Polluted River

LIU Pan-long1, YU Lu-ji1,2, LI Ting-mei1, FAN Zheng1, CHEN Tao1   

  1. 1. Research Center of Environmental Policy Planning & Assessment of Zhengzhou University,Zhengzhou 450002
    2. School of Water Conservancy and Environmental Engineering,Zhengzhou University,Zhengzhou 450001
  • Received:2017-03-31 Published:2017-10-29 Online:2017-10-29

摘要: 利用以琥珀酸钠和硫酸铵为唯一碳源和氮源的选择培养基从贾鲁河污染水体中筛选异养硝化菌,采用富集、梯度稀释涂布平板和平板划线分离的方法对菌种进行分离纯化,结合16S rDNA分析、生理生化特性和氮转化特点对菌种进行鉴定。结果表明,从水体中共分离出的63株纯菌株中,经鉴定其中3株菌为异养硝化菌,包括1株硝化假单胞杆菌(Pseudomonas nitroreducens)和2株门多萨假单胞杆菌(Pseudomonas mendocina),对氨氮去除率分别为91.8%、89.8%、81.4%。

关键词: 异养硝化, 土著菌, 筛选, 鉴定

Abstract: Heterotrophic denitrifying bacteria from the polluted water of Jialu River were screened on the selective medium,with sodium succinate as sole carbon source and ammonium sulfate as sole nitrogen source. Then,the separation and purification were performed by enrichment,gradient dilution and streaking on the plates. Finally,the strain was identified according to 16S rDNA sequence alignment results,physiological and biochemical experiments and the ammonia nitrogen transformation. The results showed that,63 strains were isolated from the polluted water,and 3 of them were identified as heterotrophic denitrifying bacterium,including a strain of Pseudomonas nirtoreducens and two strains of Pseudomonas mendocina,by which the ammonia nitrogen removal rate were 91.8%,89.8%,and 81.4%,respectively.

Key words: heterotrophic nitrification, indigenous bacteria, isolation, identification