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中国生物防治学报 ›› 2021, Vol. 37 ›› Issue (2): 259-265.DOI: 10.16409/j.cnki.2095-039x.2021.02.004

• 研究论文 • 上一篇    

贝莱斯芽胞杆菌BP-1筛选、鉴定及其对花生网斑病的田间防效评价

臧超群1, 赵颖2, 谢瑾卉1, 林英1, 裴雪1, 刘晓舟1, 梁春浩1   

  1. 1. 辽宁省农业科学院植物保护研究所, 沈阳 110161;
    2. 辽宁省农业科学院植物营养与环境资源研究所, 沈阳 110161
  • 收稿日期:2020-05-15 发布日期:2021-04-14
  • 通讯作者: 梁春浩,博士,研究员,E-mail:liangchunhao99@126.com。
  • 作者简介:臧超群,博士,副研究员,E-mail:zangchaoqun111@126.com
  • 基金资助:
    辽宁省农业科学院院长基金(2020QN2407);辽宁省博士启动项目(20170520173);辽宁省百千万人才工程资助项目(2018921035);辽宁省自然基金指导计划(2019-ZD0383);国家重点研发计划(2017YED0201104)

Screening and Identification of Bacillus velezensis Strain BP-1 and the Field Control Efficiency against Peanut Web Blotch

ZANG Chaoqun1, ZHAO Ying2, XIE Jinhui1, LIN Ying1, PEI Xue1, LIU Xiaozhou1, LIANG Chunhao1   

  1. 1. Institute of Plant Protection, Liaoning Academy of Agricultural Sciences, Shenyang 110161, China;
    2. Plant Nutrition and Environmental Resources Research Institute, Liaoning Academy of Agricultural Sciences, Shenyang 110161, China
  • Received:2020-05-15 Published:2021-04-14

摘要: 为获得用于防治花生网斑病的有效生防资源,从阜新、沈阳、锦州等辽宁花生主产区采集到健康叶片60份,采用稀释涂布平板法分离获得微生物563株,其中细菌435株,真菌98株,放线菌30株。其中对花生网斑病菌具有良好抑制作用的菌株共34株,抑制作用最强的为菌株BP-1,其对花生网斑病菌的抑菌带宽度达27.0 mm。抑菌谱试验表明,该菌株对供试的11种植物病原真菌具有不同强度的抑制作用,抑菌带宽度为5.6~22.8 mm。经形态观察、生理生化特征和16S rDNA同源性分析,鉴定为贝莱斯芽胞杆菌Bacillus velezensis。田间防效试验结果显示,BP-1菌液对花生网斑病具有较好防治效果,其发酵原液稀释200倍后,对花生网斑病的田间防治效果达60.65%,具有较好的应用前景。

关键词: 花生网斑病菌, 生物防治, 抑制作用, 贝莱斯芽胞杆菌

Abstract: In order to obtain effective resources for controlling peanut web blotch,60 healthy peanut leaves were collected from major peanut producing areas in Liaoning province, such as Fuxin, Shenyang, Jinzhou, etc. 435 bacteria, 98 fungi and 30 actinomycetes were screened by dilution plate method. 34 strains showed different levels of resistance against Peyronellaea arachidicola. Among these strains, BP-1 strain showed the strongest inhibitory activity, and the inhibition zone was 27 mm. Meanwhile, BP-1 strain showed inhibitory activity against other 11 kinds of pathogens,with the inhibition zone among 5.6 to 22.8 mm. According to the morphological characteristics, physiological and biochemical reaction and 16S rDNA sequence comparative analysis, BP-1 strain was identified as Bacillus velezensis. BP-1 fermentation broth showed good control effect on peanut web blotch, with the efficacy of 60.65% after spraying germination broth diluted 200 times. Therefore, the BP-1 had a great potential in controlling peanut web blotch.

Key words: Peyronellaea arachidicola, biological control, inhibitory action, Bacillus velezensis

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