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中国生物防治学报 ›› 2025, Vol. 41 ›› Issue (6): 1390-1402.DOI: 10.16409/j.cnki.2095-039x.2025.02.071

• 研究论文 • 上一篇    

马铃薯疮痂病生防菌贝莱斯芽胞杆菌Apcs-1鉴定及促生防病特性

王艳平1, 张凯1, 贾景丽2, 郑玉宝3, 贾立君3, 赵静陶1, 王凤鹭1, 李乾1, 毛海岩1, 张崇1, 杨宇2, 吴元华1   

  1. 1. 沈阳农业大学植物保护学院, 沈阳 110866;
    2. 沈阳农业大学农学院, 沈阳 110866;
    3. 本溪市马铃薯研究所, 本溪 117000
  • 收稿日期:2025-01-15 发布日期:2025-12-22
  • 通讯作者: 张崇, 杨宇
  • 作者简介:王艳平,女,硕士研究生,E-mail:1516849707@qq.com;张凯,男,硕士研究生,E-mail:2084254351@qq.com;通信作者,张崇,男,副教授,E-mail:zhangchong0816@syau.edu.cn;杨宇,女,教授,E-mail:yyu2020@syau.edu.cn。
  • 基金资助:
    沈阳市科技计划项目(21-110-3-05);有害生物绿色防控项目110202101045(LS-05);辽宁省科学研究经费项目(LSNQN-202014)

Identification of Biocontrol Agent Bacillus velezensis Apcs-1 against Potato Common Scab and Its Characteristics of Growth Promotion and Disease Control

WANG Yanping1, ZHANG Kai1, JIA Jingli2, ZHENG Yubao3, JIA Lijun3, ZHAO Jingtao1, WANG Fenglu1, LI Qian1, MAO Haiyan1, ZHANG Chong1, YANG Yu2, WU Yuanhua1   

  1. 1. College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China;
    2. Agronomy College, Shenyang Agricultural University, Shenyang 110866, China;
    3. Benxi Potato Research Institute, Benxi 117000, China
  • Received:2025-01-15 Published:2025-12-22

摘要: 马铃薯疮痂病是由多种链霉菌Streptomyces spp. 引起的土传和种传病害,目前缺乏有效防控药剂。本研究筛选到1株对马铃薯疮痂病菌具有明显抑制效果的生防菌株Apcs-1,抑菌率达57.92%。经形态学、生理生化特性结合16S rRNA及gyrB基因序列分析,将其鉴定为贝莱斯芽胞杆菌Bacillus velezensis。Apcs-1抑菌谱广,可分泌蛋白酶及纤维素酶,可致病菌菌丝断裂,具有抗菌脂肽合成相关基因;发酵液稳定性测定发现,其抑菌活性受温度与pH变化影响较小,尤其适用于酸性环境。盆栽试验表明,Apcs-1发酵液对马铃薯植株的生长具有促生特性,与对照植株相比,发酵液处理后的马铃薯植株株高、鲜重和干重均有明显增加;在大田试验中,Apcs-1发酵液对马铃薯疮痂病防效为62.73%。综上,Apcs-1菌株对马铃薯疮痂病具有良好防治效果,具有较好的开发应用潜力。

关键词: 马铃薯疮痂病, 贝莱斯芽胞杆菌, 筛选鉴定, 生物防治, 促生作用

Abstract: Potato common scab, a soil- and seed-borne disease caused by various Streptomyces species, currently lacks effective chemical control agents. In this study, a biocontrol strain designated Apcs-1, with significant inhibitory activity against the pathogen, was screened and isolated, and the inhibition rate reached 57.92%. Based on morphological, physiological and biochemical characterization, as well as phylogenetic analysis of 16S rRNA and gyrB gene sequences, the strain was identified as Bacillus velezensis. Apcs-1 demonstrated a broad antibacterial spectrum and was capable of secreting protease and cellulase. It induced hyphal fragmentation of the pathogen and possessed genes involved in antimicrobial lipopeptide synthesis. Stability tests of its fermentation broth revealed that the inhibitory activity remained relatively stable under varying temperatures and pH conditions, with enhanced efficacy in acidic environment. Pot experiments demonstrated that the Apcs-1 fermentation broth promoted the growth of potato plants. Compared with the control group, treated plants showed significant increases in plant height, fresh weight and dry weight. In field trials, the fermentation broth provided a control efficacy of 62.73% against potato common scab. In conclusion, the Apcs-1 strain exhibits strong potential for controlling potato common scab and holds promise for future development and application.

Key words: potato common scab, Bacillus velezensis, screening and identification, biological control, growth promotion

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