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应用生态学报 ›› 1994, Vol. 5 ›› Issue (2): 156-158.

• 研究论文 • 上一篇    下一篇

生孢噬纤维粘菌基因文库的构建和纤维素酶基因的克隆

张立新1, 刘纯强2, 蒯军2, 高培基2   

  1. 1. 中国科学院沈阳应用生态研究所, 沈阳 110015;
    2. 山东大学微生物研究所, 济南 250100
  • 收稿日期:1993-08-12 修回日期:1994-01-26 出版日期:1994-04-25 发布日期:1994-04-25
  • 基金资助:

    国家自然科学基金

Construction of Sporocytophaga B29 gene library and clouiug of CMCase gene

ZhangLixin1, Liu Chunqiang2, Kuai Jun2, Gao Peiji2   

  1. 1. Institute of Applied Ecology, Academia Sinica, Shenyang 110015;
    2. Institute of Microbiology, Shandong University, Jinan 250100
  • Received:1993-08-12 Revised:1994-01-26 Online:1994-04-25 Published:1994-04-25

摘要: 将生孢噬纤维粘菌(Sporocytophaga B29)染色体用PstI部分酶切后,连接到大肠杆菌(E.coli)质粒载体pUC8上,然后转化E.coliJM83,从而建立了B29的基因文库,并筛选一个含有内切葡聚糖纤维素酶(CMCase)的阳性克隆。从此阳性克隆中提取质粒再转化JM83,发现所有的氨苄青霉素抗性(Apr)转化子都具有CMCase酶活性,证明在大肠杆菌中克隆到一个B29的内切葡聚糖酶基因。

关键词: 基因工程生态学, 生孢噬纤维粘菌基因文库, CMCase基因克隆, 退耕地, 生物结皮, 径流, 入渗, 表面粗糙度

Abstract: An endoglucanase(CMCase)gene from Sporocytophaga B29 was cloned in Escherichia coli JM83. The chromosomal DNA of B29 was partially digested with restriction enzyme PstI and ligated into the plasmid pUC8 that had been linearized with the same enzyme.After transformation of JM83,the gene library of B29 was constructed and an endoglucanase-positive clone was detected in situ.All transformants with Apr had the activity of CMCase,proving that what we cloned was a CMCase gene.

Key words: Genetic engineering ecology, Sporocytophaga B29 gene library, CMCase gene clone, runoff., biological soil crust, surface roughness, revegetated grassland, infiltration