河南农业科学 ›› 2019, Vol. 48 ›› Issue (11): 99-104.DOI: 10.15933/j.cnki.1004-3268.2019.11.014

• 植物保护 • 上一篇    下一篇

胡萝卜黑腐病生防放线菌G-1抑菌活性研究

张家榕1,高振峰2,李娜3,张晓宇2   

  1. 1.山西农业大学 生命科学学院,山西 太谷 030801; 2.山西省农业科学院 农产品贮藏保鲜研究所,山西 太原 030031;3.山西科技新闻出版传媒集团 今日农业杂志社,山西太原 030006)
  • 收稿日期:2019-06-25 出版日期:2019-11-15 发布日期:2019-11-15
  • 通讯作者: 张晓宇(1979-),女,山西原平人,副研究员,博士,主要从事植物病害生物防治研究。E-mail:sxndgzf@163.com
  • 作者简介:张家榕(1982-),女,山西清徐人,在读博士研究生,研究方向:生物农药。E-mail:sxndzjr@163.com
  • 基金资助:
    山西省重点研发计划项目(201703D221026-1);山西省农业科学院特色农业技术攻关项目(YGG17002)

 The Antifungal Activity of Biocontrol Actinomycetes G-1 Against Alternaria radicina

 ZHANG Jiarong1,GAO Zhenfeng2,LI Na3,ZHANG Xiaoyu2   

  1.  ( 1.College of Life Sciences,Shanxi Agricultural University,Taigu 030801,China; 2.Institute of Agricultural Products Storage and Preservation,Shanxi Academy of Agricultural Sciences,Taiyuan 030031,China; 3.Today Agriculture Magazine,Shanxi Science and Technology Media Group,Taiyuan 030006,China)
  • Received:2019-06-25 Published:2019-11-15 Online:2019-11-15

摘要: 为筛选出对胡萝卜黑腐病防治具有良好效果的放线菌,采用平板稀释涂布法、对峙培养法、生长速率法、盆栽试验和16S rRNA序列分析,对胡萝卜表层土中的放线菌分离、抑菌活性、盆栽防效和分类地位进行研究。结果表明,15株放线菌中仅菌株G-1对胡萝卜黑腐交链孢(Alternaria radicina)具有较好抑菌活性,其平板和发酵液抑菌率分别为77.2%78.5%,显著高于其他菌株;经16S rRNA序列分析,将该菌株鉴定为微白黄链霉菌(Streptomyces albidoflavus);盆栽防效以稀释50100倍效果较好,可保持70%以上防效。综上所述,菌株G-1在胡萝卜黑腐病生物防治中具有良好应用价值。

关键词: 放线菌, 胡萝卜黑腐交链孢, 抑菌活性, 盆栽防效

Abstract:  In order to screen out actinomycete with good inhibitory effect on Alternaria radicina,plate confrontation method,dual-culture inhibition method,growth rate method,pot experiment and 16S rRNA sequence analysis were used to screen antagonistic actinomycete,test the control effect on Alternaria radic ina,and identify actinomycetes.The result showed that bothstrain G-1 and its fermentation broth had sig nificant inhibition rate against Alternaria radicina,and the inhibition rates were 77.2% and 78.5%,re spectively.Strain G-1 was identified as Streptomyces albidoflavus based on the analysis of 16S rRNA se quence.In addition,the control effect of strain G-1 on Alternaria radicina was more than 70% in pot ex periment,when the fermentation broth of strain G-1 was diluted 50—100 times.In conclusion,strain G-1 had good application potential in controlling Alternaria radicina.

Key words: Actinomycete, Alternaria radicina; Antifungal activity, Control effect in flowerpot

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