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Isolation, screening and identification of endophytic antagonistic bacteria to Potato ring rot bacteria

Published online by Cambridge University Press:  12 February 2007

Tian Hong-Xian ,
Wang Rui-Xia ,
Li Yin-Fan ,
Wang Xiong ,
Sun Fu-Zai  and
Yuan Jun
Tian Hong-Xian
Affiliation:
Institute of High Altitude Crops, Shanxi Academy of Agricultural Sciences, Datong 037008, China
Wang Rui-Xia
Affiliation:
Institute of High Altitude Crops, Shanxi Academy of Agricultural Sciences, Datong 037008, China
Li Yin-Fan*
Affiliation:
Institute of High Altitude Crops, Shanxi Academy of Agricultural Sciences, Datong 037008, China
Wang Xiong
Affiliation:
Institute of High Altitude Crops, Shanxi Academy of Agricultural Sciences, Datong 037008, China
Sun Fu-Zai
Affiliation:
Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100094, China
Yuan Jun
Affiliation:
Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100094, China
*
*Corresponding author: Email Liyinfan@126.com
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Abstract

Two hundred and forty bacterial strains were isolated from three potato (Solanum tuberosum) cultivars from eight different sources. On the basis of antagonistic bacteria examination in vitro, greenhouse and field tests, 22.9% of isolated bacteria were endophytic and antagonistic. Three strains, namely A-10', T3 (Bacillus sp.) and H1-6 (Pseudomonas fluorescens), were chosen for their suppressive effect on bacterial ring rot (Clavibacter michiganensis subsp. sepedonicus) and their growth promotion. The strain A-10' was an endophytic bacterium with the effects of colonization, plant growth promotion and suppression of the pathogenic bacteria, showing good prospects for commercial use.

Keywords

antagonistic bacteriaendophytic bacteriaPotato ring rot bacteria
Type
Research Article
Information
Chinese Journal of Agricultural Biotechnology , Volume 2 , Issue 3 , December 2005 , pp. 173 - 178
Copyright
Copyright © China Agricultural University and Cambridge University Press 2005

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