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中国生物防治学报 ›› 2019, Vol. 35 ›› Issue (6): 922-929.DOI: 10.16409/j.cnki.2095-039x.2019.06.020

• 研究论文 • 上一篇    下一篇

一株海洋细菌BA-3的鉴定及其对建兰尖孢镰刀菌茎腐病的防治

姚锦爱1, 黄鹏1, 蔡鸿娇2, 侯翔宇1, 余德亿1   

  1. 1. 福建省作物有害生物监测与治理重点实验室/福建省农业科学院植物保护研究所, 福州 350013;
    2. 集美大学, 厦门 361021
  • 收稿日期:2019-07-31 出版日期:2019-12-08 发布日期:2019-12-18
  • 通讯作者: 余德亿,研究员,E-mail:yudy_2004@126.com
  • 作者简介:姚锦爱,副研究员,E-mail:yaoja@163.com。
  • 基金资助:
    福建省属公益类科研院所基本科研专项(2018R1025-2,2019R1024-5);福建省农业科学院创新团队(STIT2017-2-2)

Identification of Marine Bacterium BA-3 and Its Control Fusarium oxysporum of Cymbidium ensifolium Stem Rot

YAO Jinai1, HUANG Peng1, CAI Hongjiao2, Hou Xiangyu1, YU Deyi1   

  1. 1. Fujian Key Laboratory for Monitoring and Integrated Management of Crop Pests, Institute of Plant Protection, Fujian Academy of Agricultural Sciences, Fuzhou 350013, China;
    2. Jimei University, Xiamen 361021, China
  • Received:2019-07-31 Online:2019-12-08 Published:2019-12-18

摘要: 为获得对建兰茎腐病病原菌尖孢镰刀菌具有良好抑菌效果的生防菌,以海洋鱼类为分离来源,室内测定不同海洋细菌菌株的抑菌活性,筛选抑菌率最高的菌株,在此基础上对所筛菌株进行分类鉴定及抑菌谱和防效测定。结果表明:从海洋鱼类中分离获得43株海洋细菌,初筛出10株对建兰茎腐病原菌尖孢镰刀菌具有明显抑制作用的菌株,抑菌带宽0.60~1.60 cm,其中菌株BA-3抑制作用最强,抑菌率达87.69%;经形态、生理生化及分子生物学鉴定,确认菌株BA-3为解淀粉芽胞杆菌。该菌抑菌谱广,对建兰茎腐病原菌尖孢镰刀菌的室内防效为79.05%,大棚防效74.71%~77.09%,具有良好的应用前景。

关键词: 海洋细菌, 解淀粉芽胞杆菌, 建兰茎腐病, 尖孢镰刀菌, 防治

Abstract: In order to screen the bacterium with good antibacterial effect against Fusarium oxysporum of Cymbidium ensifolium stem rot. The antibacterial activity of the isolated strains was determined to screen the strains with the highest inhibition rate from marine fish. Base on that the screened strains were classified and identified, and the inhibition spectrum and control efficiency were evaluated. The results showed that among isolated the 43 marine bacteria, 10 strains showed significant inhibitory effects on F. oxysporum, with their inhibition zone diameter ranging from 0.60 to 1.60 cm. The strain BA-3 had the strongest inhibition effects:87.69% in the culture medium. Based on morphological characteristics, biochemical characteristics, and molecular biological, BA-3 was identified as Bacillus amyloliquefaciens, which it can inhibit a broad spectrum of phytopathogenic bacteria. Treatment of F. oxysporum of Cymbidium ensifolium Stem rot and BA-3 fermentation solution resulted in 79.05% control efficacy in the lab, and the efficacy of BA-3 fermentation solution against F. oxysporum of Cymbidium ensifolium Stem rot was 74.71%-77.09% in the field, that it is good application.

Key words: marine bacterium, Bacillus amyloliquefaciens, stem rot on Cymbidium ensifolium, Fusarium oxysporum, control

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