文献类型： 外文期刊

作者： Luo, Yuanli ¹ ; Dong, Daiwen ² ; Gou, Zhiqin ² ; Wang, Xuyi ² ; Jiang, Huan ² ; Yan, Yufang ² ; Wu, Chaojun ² ; Zhou, Cha ¹ ;

作者机构： 1.Southwest Univ, Citrus Res Inst, Chinese Acad Agr Sci, Chongqing 400712, Peoples R China

2.Southeast Chongqing Acad Agr Sci, Chongqing 408000, Peoples R China

关键词： Antagonistic bacterial;Biocontrol;Brassica juncea Var. Tumida Tsen;Clubroot;Plasmodiophora brassicae;Zhihengliuella aestuarii

期刊名称：EUROPEAN JOURNAL OF PLANT PATHOLOGY （ 影响因子：1.907； 五年影响因子：2.022 ）

ISSN： 0929-1873

年卷期： 2018 年 150 卷 1 期

页码：

收录情况： SCI

摘要： Mustard clubroot, caused by Plasmodiophora brassicae, is a serious disease that affects Brassica juncea var. tumida Tsen, a mustard plant that is the raw material for a traditional fermented food manufactured in the Chongqing Municipality, People's Republic of China. To find antagonistic bacteria for P. brassicae, 124 bacteria were obtained from the rhizosphere soil of B. juncea var. tumida grown in Fuling, Chongqing. Isolates were preliminarily chosen by evaluating the inhibition rate of the P. brassicae resting spore germination. The biocontrol effects of three antagonistic bacteria against clubroot on B. juncea var. tumida were evaluated in a greenhouse experiment. B18 showed the highest control efficiency, at 63.4% in the greenhouse test. In a field trial, B18 was also effective in controlling clubroot, but only at a 49.7% efficiency rate. According to 16S rDNA sequence analysis, strain B18 had a 100% sequence similarity with type strain Zhihengliuella aestuarii DY66(T) (EU939716). Based on morphological, cultural, physiological and biochemical characteristics, the DNA G + C content, polar lipids, fatty acids, cell wall analysis, as well as DNA-DNA hybridization, strain B18 was identified as Z. aestuarii B18. Thus, the isolate B18 might have a potential biocontrol application for clubroot. We report for the first time that Z. aestuarii B18 can control clubroot.