食品科学 ›› 2006, Vol. 27 ›› Issue (5): 53-57.

• 基础研究 • 上一篇    下一篇

灵芝原生质体诱变选育高产漆酶突变株的研究

 王岁楼, 王琼波, 陈春涛, 李国富, 孙君社   

  1. 郑州轻工业学院食品与生物工程系; 中国农业大学食品生物技术系
  • 出版日期:2006-05-15 发布日期:2011-09-16

Breeding of Ganoderma Strains Producing High Laccase Activity by Mutagenesis of Protoplasts

 WANG  Sui-Lou, WANG  Qiong-Bo, CHEN  Chun-Tao, LI  Guo-Fu, SUN  Jun-She   

  1. 1.Department of Food and Biology Engineering, Zhengzhou Institute of Light Industry, Zhengzhou 450002, China;2.Department of Food Biotechnology, China Agricultural University, Beijing 100083, China
  • Online:2006-05-15 Published:2011-09-16

摘要:  对一株产漆酶活性较高的灵芝(Ganoderma.lucidumKarstNo.1)原生质体的制备、再生及紫外诱变育种进行了研究,获得了1株漆酶活性比对照菌株提高2.83倍的突变株G301。实验所确定的原生质体最佳制备条件为:以蔗糖为稳渗剂,采用4%(W/V)溶壁酶与2%(W/V)蜗牛酶等体积混合酶液,在30℃、pH6.0下,对液体培养48h的灵芝菌丝体酶解1h;同时实验所确定的原生质体诱变的适宜条件为:30W紫外灯距离40cm照射30s。

关键词: 漆酶, 灵芝, 原生质体, 紫外线, 突变, 育种

Abstract: The output , regeneration and mutagenesis of the protoplasts of Ganoderma. lucidum Karst No.1 that would produce high laccase activity were studied. The mutant G301 of enzyme activity as 2.83 fold higher than the original strain was obtained under 30W UV lamp, at a distance 40cm from the protoplasts, for 30s. The optimal conditions of protoplast output and regeneration are as follows: using 0.6mol/L sugar as osmotic stabilizer, the mycelium being incubated for 48 hours, the lytic enzyme solution containing a mixture of equal volume of 4%(W/V) Lywallzyme and 2%(W/V) snailase, pH6.0, and enzymatic time for 1 hour at 30℃.

Key words: laccase, Ganoderma lucidum Karst, protoplast, UV, mutant, breeding