Isolation and identification of a Bacillus subtilis HZ-72 exhibiting biocontrol activity against flax seedling blight

文献类型： 外文期刊

第一作者： Tan, Taimeng

作者： Tan, Taimeng;Zhu, Jiuxiang;Yu, Yongting;Li, Zhimin;Chen, Jia;Gao, Chunsheng;Cheng, Yi;Guo, Litao;Yan, Li;Sun, Xiangping;Zeng, Liangbin;Yan, Zhun;Tan, Taimeng;Zhu, Jiuxiang;Li, Jilie;Zhang, Mengjun;Zhao, Mengrui;Shen, Airong

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关键词： Rhizosphere bacteria; Bacillus subtilis; Flax; Rhizoctonia solani; Biocontrol

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： 2019 年 153 卷 3 期

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收录情况： SCI

摘要： Seedling blight caused by Rhizoctonia solani is a serious soil-borne disease on flax. In this study, we isolated a bacterial strain HZ-72 from the rhizosphere soil of flax with obvious inhibitory effect on R. solani and other six plant fungal pathogens. Strain HZ-72 was identified as Bacillus subtilis based on morphological, physiological, biochemical characteristics and 16S rDNA sequence analysis. In greenhouse experiments, the control efficiency of strain HZ-72 reached 83.34%. Additionally, in vitro assays indicated that cell wall-degrading enzymes such as protease and cellulase, volatile compounds, proteins and lipopeptides produced by strain HZ-72 all contributed to its antagonistic activity against R. solani. To our knowledge, this is the first report on the use of a rhizosphere B. subtilis strain as a biocontrol agent for the biocontrol of flax seedling blight caused by R. solani.

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