生物技术通报 ›› 2013, Vol. 0 ›› Issue (12): 146-150.

• 研究报告 • 上一篇    下一篇

不同诱变方法对黑曲霉产木聚糖酶能力的影响

郑丽丽1 盛占武1 韩冰莹2 谭琳1 李奕星1 郭刚1   

  1. 1. 中国热带农业科学院海口实验站 海南省遗传改良重点实验室,海口 570102;
    2.中国热带农业科学院热带生物技术研究所,海口 571101
  • 收稿日期:2013-07-23 出版日期:2013-12-20 发布日期:2013-12-20
  • 作者简介:郑丽丽,女,硕士,研究实习员,研究方向:农业废弃物资源综合利用; E-mail:lily_0909@126.com

Effect of Different Mutation Methods on Xylanase Production Ability by Aspergillus niger

Zheng Lili1, Sheng Zhanwu1, Han Bingying2, Tan Lin1, Li Yixing1, Guo Gang1   

  1. 1. Haikou Experimental Station,Chinese Academy of Tropical Agricultural Science,Hainan Key Laboratory of Banana Genetic Improvement,Haikou 570102
    2. Institute of Tropical Bioscience and Biotechnology,Chinese Academy of Tropical Agricultural Scienses,Haikou 571101
  • Received:2013-07-23 Published:2013-12-20 Online:2013-12-20

摘要:

利用5种方法对黑曲霉AS3.350进行诱变,研究不同诱变方法对黑曲霉产木聚糖酶的影响,获得高产木聚糖酶的突变株。结果表明,紫外诱变获得的最优突变株酶活是出发菌株的2.18倍,诱变效果最为明显,其次是快中子辐照诱变,获得的最优突变株酶活是出发菌株的1.72倍,硫酸二乙酯诱变、亚硝酸钠诱变、亚硝基胍诱变获得的最优突变株酶活分别是出发菌株的1.51倍、1.46倍、1.38倍,物理诱变比化学诱变对黑曲霉产木聚糖酶更为敏感。

关键词: 紫外诱变, 快中子辐照, 亚硝基胍诱变, 硫酸二乙酯诱变, 亚硝酸钠诱变

Abstract:

Based on the Aspergillus niger AS3.350, the mutants were brewed through inducing five treatments.The effect of different mutation methods on enzyme production ability of Xylanase was disscused and obtained mutant strain of xylanase production high ability. The results indicate that, the mutagenesis of UV irradiation was most obvious, and the xylanase activity was 2.18 times of the original strain.Mutagenic effect of the fast neutron irradiation mutagenesis was second, the xylanase activity was 1.72 times of the original strain.After mutagenesis by diethyl sulfatemutagenesis, sodium nitrite, nitrosoguanidine, xylanase activity of the best mutant strains were 1.51 times, 1.46 times, 1.38 times.Physical mutation is more sensitive than chemical mutagenesis on increasing xylanase activity by Aspergillus niger .

Key words: Uvirradiation, Fast neutron irradiation, Nitrosoguanidine mutation, Diethyl sulfate mutagenesis, Sodium nitrite induced