生物技术通报 ›› 2014, Vol. 0 ›› Issue (9): 120-124.

• 研究报告 • 上一篇    下一篇

紫外、60Co复合诱变选育烟色烟管菌漆酶高产突变株

彭滟钞,曹福祥,董旭杰,彭继庆,胡双喜   

  1. 中南林业科技大学生命科学与技术学院,长沙 410004
  • 收稿日期:2014-02-25 出版日期:2014-09-15 发布日期:2014-09-07
  • 作者简介:彭滟钞,女,硕士研究生,研究方向:微生物育种;E-mail:414426489@qq.com

Screen High-producing Laccase Strain of Bjerkandera fumosa Through UV and 60Co Composite Mutagenesis

Peng Yanchao, Cao Fuxiang,Dong Xujie, Peng Jiqing, Hu Shuangxi   

  1. College of Life Science and Technology,Central 
    South 
    University 
    of 
    Forestry 
    and 
    Technology,Changsha  
    410004
  • Received:2014-02-25 Published:2014-09-15 Online:2014-09-07

摘要: 对烟色烟管菌(Bjerkanderafumosa5.0172)的孢子悬浮液进行紫外诱变筛选得到一株诱变株ZW-7,其产漆酶的活力是原始菌株的1.33倍,继代培养5代后,未见酶活下降。将诱变株ZW-7的孢子悬浮液用60Co-γ射线进行辐射诱变筛选得到一株诱变株Co-11,其产漆酶的活力是ZW-7的1.18倍,为380.5U/L,较原始菌株的250.6U/L提高了约58.1%,继代培养5代后,酶活稳定。

关键词: 烟色烟管菌, 紫外, 60Co-γ射线, 诱变, 漆酶

Abstract: Mutagenic strains ZW-7 was obtained from the spore suspension of Bjerkandera fumosa(5.0172)by UV mutagenesis and screening. The laccase activity was 1.33 times than the original strain. After subcultured five generations, laccase activity was stable. ZW-7 was mutagenized to a new mutagenic strain Co-11 by treating with 60Co-γ ray radiation and its activity was 380.5 U/L, which was 1.18 times than ZW-7 and 1.58 times than the original strain(250.6 U/L). After subcultured five generations, enzyme activities of Co-11 remains stable.

Key words: Bjerkandera fumosa , UV, 60Co-γ rays, Mutagenic Laccase