生物技术通报 ›› 2017, Vol. 33 ›› Issue (7): 120-125.doi: 10.13560/j.cnki.biotech.bull.1985.2017-0013

• 研究报告 • 上一篇    下一篇

一株枯草芽孢杆菌的生长特性及抑藻效果研究

程新,李昆太,黄林   

  1. 江西农业大学生物科学与工程学院,南昌 330045
  • 收稿日期:2017-01-16 出版日期:2017-07-11 发布日期:2017-07-11
  • 作者简介:程新,男,博士,副教授,研究方向:资源微生物学;E-mail:jx_chengxin@hotmail.com
  • 基金资助:
    江西省科技支撑计划(20111BBF60031),江西省教育厅科技项目(GJJ11089)

Research on Growth Characteristics and Algicidal Effects of Bacillus subtilis

CHENG Xin ,LI Kun-tai, HUANG Lin   

  1. College of Biological Science and Engineering,Jiangxi Agricultural University,Nanchang 330045
  • Received:2017-01-16 Published:2017-07-11 Online:2017-07-11

摘要: 溶藻微生物能引起水华蓝藻的快速消亡,从而达到控制水华之目的。为了探讨枯草芽孢杆菌(Bacillus subtilis)对铜绿微囊藻(Microcystis aeruginosa)及小球藻(Chlorell)的抑制效果,在实验室条件下研究了枯草芽孢杆菌对两种藻类生长的影响、抑制藻类生长的作用方式以及发酵液处理下铜绿微囊藻丙二醛(MDA)及谷胱甘肽(GSH)含量、超氧化物歧化酶(SOD)及过氧化氢酶(CAT)活性。试验结果表明,筛选出的菌株具有较好的环境适应性和抑制藻类生长的能力,其抑制效果是通过分泌胞外物质实现的。经过枯草芽孢杆菌处理后,铜绿微囊藻的叶绿素a及藻体蛋白含量均显著低于对照组,而胞内MDA及GSH含量显著升高,SOD及CAT活性也有增高的趋势。

关键词: 枯草芽孢杆菌, 藻类, 抑制, 生长特性

Abstract: Algicidal microorganisms rapidly kill cyanobacteria,and subsequently the purpose of controlling algal bloom in water bodies is achieved. To investigate the inhibition of Bacillus subtilis against Microcystis aeruginosa and Chlorell,the Bacillus subtilis cultures were used to study its inhibition and mode of action against these two kinds of algae. The MDA,GSH,SOD and CAT activity in M. aeruginosa when cultured with B. subtilis were measured. The results showed that B. subtilis had a solid adaptability to environment and inhibited the growth of the algae by secreting extracellular substances. The chlorophyll a and protein contents of M. aeruginosa in treated groups were significantly lower than that in the control group,while the MDA and GSH contents as well as the SOD and CAT activity increased obviously when M. aeruginosa was cultured with B. Subtilis.

Key words: Bacillus subtilis, algae, inhibition, growth characteristics