欢迎访问中国生物防治学报,今天是

中国生物防治学报 ›› 2023, Vol. 39 ›› Issue (6): 1398-1407.DOI: 10.16409/j.cnki.2095-039x.2023.02.063

• 研究论文 • 上一篇    下一篇

丹参根腐病菌拮抗菌株贝莱斯芽胞杆菌Bv1-4的筛选及盆栽防效

王飞1, 杨瑾1, 李绍建1, 李雪梦1, 文艺1, 赵莹2, 秦艳红1, 高素霞1, 刘玉霞1, 鲁传涛1   

  1. 1. 河南省农业科学院植物保护研究所/农业农村部华北南部作物有害生物综合治理重点实验室, 郑州 450002;
    2. 河南农业大学植物保护学院, 郑州 450002
  • 收稿日期:2023-05-11 出版日期:2023-12-08 发布日期:2023-12-20
  • 通讯作者: 鲁传涛,硕士,研究员,E-mail:chuantaolu@qq.com。
  • 作者简介:王飞,硕士,副研究员,E-mail:yunfeiren@163.com;杨瑾,硕士,研究实习员,E-mail:15738394561@163.com。
  • 基金资助:
    国家中药材产业技术体系(CARS-21);河南省中药材产业技术体系(HARS-22-11-Z1);河南省农科院新兴学科(2022XK07, 2023XK05)

Screening of Antagonistic Isolate Bacillus velezensis Bv1-4 and Its Control Effect against Root Rot Disease on Salvia miltiorrhiza

WANG Fei1, YANG Jin1, LI Shaojian1, LI Xuemeng1, WEN Yi1, ZHAO Ying2, QIN Yanhong1, GAO Suxia1, LIU Yuxia1, LU Chuantao1   

  1. 1. Institute of Plant Protection, Henan Academy of Agricultural Sciences/Key Laboratory of Integrated Pest Management on Crops in Southern Region of North China, Zhengzhou 450002, China;
    2. College of Plant Protection, Henan Agricultural University, Zhengzhou 450002, China
  • Received:2023-05-11 Online:2023-12-08 Published:2023-12-20

摘要: 为筛选防治丹参根腐病的高效生防菌,本研究通过平板对峙法,从健康丹参根际土壤中分离获得一株对丹参根腐病菌具有显著拮抗作用的生防细菌Bv1-4。结合细菌形态学、生理生化特征及序列分析,将菌株Bv1-4鉴定为贝莱斯芽胞杆菌Bacillus velezensis。该菌株对丹参根腐病菌层出、腐皮和尖孢镰刀菌的抑菌率分别为65.54%、68.28%和66.87%;进一步的抑菌谱测试表明Bv1-4对菜豆壳球孢、齐整小核菌细极链格孢等多种植物病原菌均具有较好抑制作用。盆栽试验结果表明,接种Bv1-4后,丹参茎叶和根系鲜重较无菌水对照组均有显著提升,提升率分别为70.97%和70.37%;Bv1-4分别与丹参根腐病三种病原菌先后混合接种后,调查发病等级计算防效均可达80.00%以上。综上,Bv1-4生防性状优良,在植物病害生物防治中有较好应用潜力。

关键词: 贝莱斯芽胞杆菌, 丹参, 根腐病, 生物防治

Abstract: Root rot of Salvia miltiorrhiza is a common root disease caused by Fusarium spp., which has become one of the primary diseases affecting the production of S. miltiorrhiza. In order to screen effective biocontrol bacteria against root rot disease of S. miltiorrhiza, a biocontrol bacteria Bv1-4 with significant antagonism was isolated from the rhizosphere soil of healthy S. miltiorrhiza by the plate confrontation test. Based on morphological, physiological and biochemical characteristics, and sequence analysis, isolate Bv1-4 was identified as Bacillus velezensis. The inhibition rates of Bv1-4 against root rot of S. miltiorrhiza were 65.54%, 68.28%, and 66.87% for F. proliferatum, F. solani, and F. oxysporium, respectively. Further inhibition spectrum tests showed that Bv1-4 had a broad range of antifungal activity against various plant pathogenic fungi, such as Macrophomina phaseoli, Sclerotium rolfsii, Altrnaria tenuissima, and others. The results of the potted experiment proved that the fresh weight of above- and below-ground parts of S. miltiorrhiza after inoculation with Bv1-4 was significantly increased compared with the control group, and the increase rate was 70.97% and 70.37%, respectively; the control effect could reach more than 80% after mixed inoculation with Bv1-4 and three pathogens of S. miltiorrhiza root rot. In conclusion, Bv1-4 has good biocontrol characteristics and has good application potential in the biocontrol of plant diseases.

Key words: Bacillus velezensis, Salvia miltiorrhiza, root rot disease, biological control

中图分类号: