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中国生物防治学报 ›› 2024, Vol. 40 ›› Issue (4): 927-935.DOI: 10.16409/j.cnki.2095-039x.2024.02.035

• 研究论文 • 上一篇    

抗生素溶杆菌R16鉴定及对蓝莓根癌病的防治效果研究

刘学瑞1, 邓春菊1, 魏方俊1, 贺赛雅1, 袁加升1, 何依璐1, 崔兴国3, 魏兰芳2, 姬广海1   

  1. 1. 云南农业大学省部共建云南生物资源保护与利用国家重点试验室, 昆明 650201;
    2. 云南农业大学农科基础实验教学中心, 昆明 650201;
    3. 曲靖佳沃现代农业有限公司, 曲靖 655000
  • 收稿日期:2023-04-11 发布日期:2024-08-06
  • 作者简介:刘学瑞,男,硕士,E-mail:1592048300@qq.com;邓春菊,博士研究生,E-mail:dcj180870@163.com;通信作者,博士,教授,E-mail:550356818@qq.com。
  • 基金资助:
    云南省科技厅基础研究专项-重点项目(202201AS070313);云南省“万人计划”产业技术领军人才(YNWR-CYJS-2019-046)

Identification of Lysobacter antibioticus R16 and Its Control Effect on Blueberry Crown Gall

LIU Xuerui1, DENG Chunju1, WEI Fangjun1, HE Saiya1, YUAN Jiasheng1, HE Yilu1, CUI Xingguo3, WEI Lanfang2, JI Guanghai1   

  1. 1. State Key Laboratory for Conversation and Utilization of Bio-Resources in Yunnan, Yunnan Agricultural University, Kunming 650201, China;
    2. Agricultural Foundation Experiment Teaching Center, Yunnan Agricultural University, Kunming 650201, China;
    3. Qujing Jiawo Modern Agriculture Co., Ltd, Qujing 655000, China
  • Received:2023-04-11 Published:2024-08-06

摘要: 为筛选防治蓝莓根癌病的高效生防菌,本研究从蓝莓植株根际土壤中分离出一株对根癌土壤杆菌Agrobacterium tumefaciens有显著拮抗作用的生防细菌R16。通过细菌形态学和分子生物学鉴定,该菌为抗生素溶杆菌Lysobacter antibioticus。平板试验结果表明,菌株R16对根癌土壤杆菌具有显著的拮抗效果,其抑菌圈直径达20.00 mm;温室针刺接种和灌根试验中,该菌对根癌土壤杆菌的防效分别为77.50%和82.46%;田间试验表明,该菌对蓝莓根癌病的防效达55.00%以上,可以显著降低植株的病情指数。本文首次报道了对蓝莓根癌病具有显著防效的抗生素溶杆菌R16,该菌株能有效抑制根癌土壤杆菌的生长及其引起的起瘤反应,可为蓝莓根癌病的绿色生物防控提供新资源。

关键词: 抗生素溶杆菌, 蓝莓根癌病, 生物防治, 根际微生物

Abstract: In order to screen high-efficiency biocontrol bacteria against blueberry root cancer, a biocontrol bacterium R16 with significant antagonistic effect on Agrobacteriuum tumefaciens was isolated from the rhizosphere soil of blueberry plant. The strain was identified as Lysobacter antibioticus by morphology and molecular biology analysis. Plate antagonism test showed that the strain R16 had a significant antagonistic effect on A. tumefaciens with the inhibition zone diameter of 20.00 mm. In greenhouse experiments, control efficacy on A. tumefaciens was 77.50% and 82.46% by needle inoculation and root irrigation, respectively. Field trials showed that the strain had control efficacy more than 55% on blueberry root cancer, and could significantly reduce the disease index. This is the first report of L. antibiotic with significant control effect on blueberry root cancer disease. This strain can effectively inhibit the growth of A. tumefaciens and its tumorigenic reaction, which provide new resources for the green biological prevention and control of blueberry root cancer disease.

Key words: Lysobacter antibioticus, blueberry crown gall, biological control, rhizosphere microorganisms

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