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中国生物工程杂志

China Biotechnology
China Biotechnology  2010, Vol. 30 Issue (02): 71-76    DOI:
    
The Elementary Identification of Antagonistic Bacteria against Botrytis cinerea and Improving Biocontrol Effect Through Genetic Modification with Chitinase Gene
1.Institute of Life Science Northwest University, Xi’an 710069,China
2.College of Bioengeering Henan University of Technology,Zhengzhou 450001,China
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Abstract  

Fh antagonist to Botrytis cinerea was preserved in laboratory. Through a series of morphological and biochemical characteristics, Fh belongs to Bacillus. In order to enhance the inhibitory effect of this strain, a 6.4 kb DNA fragment containing chitinase gene from pUC1965 was inserted into vector pBE2 to construct recombination plasmids called pBE2-chib . A new strain named Fh-chib was formed by transferring the recombination plasmids into Bacillus Fh. The PCR identification of chitinase gene and chitin plate culture confirmed that Chitinase gene was transferred successfully into the wild strain Fh. The original chitinase activity of Fh-chib using the vector pBE2 was 4.06U/ml. Fh-chib had an increased inhibitory effect against Botrytis cinerea on tomato by 23.2% through chitin plate culture.



Key wordsBacillus      Chitinase      Botrytis cinerea      Transfer      Biocontrol     
Received: 10 July 2009      Published: 26 February 2010
Cite this article:

HAN Wen-Xia, CHEN Li, CHEN Liang, GONG Ji, CHEN Wu-Ling. The Elementary Identification of Antagonistic Bacteria against Botrytis cinerea and Improving Biocontrol Effect Through Genetic Modification with Chitinase Gene. China Biotechnology, 2010, 30(02): 71-76.

URL:

https://manu60.magtech.com.cn/biotech/     OR     https://manu60.magtech.com.cn/biotech/Y2010/V30/I02/71

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