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中国生物防治学报 ›› 2021, Vol. 37 ›› Issue (1): 178-183.DOI: 10.16409/j.cnki.2095-039x.2021.01.032

• 研究论文 • 上一篇    

链霉菌ZZSP-7的鉴定及其对草莓炭疽病的防效

姚锦爱1, 黄鹏1, 赖宝春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. 漳州市农业科学研究所, 漳州 363005
  • 收稿日期:2020-12-15 发布日期:2021-02-23
  • 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(2019R1024-5);福建省农业科学院项目(DEC202002和STIT2017-2-2)

Identification and Control Efficacy of Streptomyces sp. ZZSP-7 against Strawberry Anthracnose

YAO Jinai1, HUANG Peng1, LAI Baochun2, 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. Zhangzhou Institute of Agricultural Science, Zhangzhou 363005, China
  • Received:2020-12-15 Published:2021-02-23

摘要: 为获得草莓炭疽病菌胶孢炭疽菌的优良拮抗菌,以草莓种植基地的土壤为拮抗菌来源,通过室内测定不同分离物对草莓炭疽病菌的抑菌活性,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,并评价其抑菌谱和防效。结果表明,从土壤中分离获得42株拮抗菌,筛选出5株对胶孢炭疽菌具有明显抑制作用的菌株。其中,菌株ZZSP-7的抑菌作用最强,5 d后的抑菌带宽达17.6 mm。经形态、生理生化及16S rDNA基因系统发育分析,确认菌株ZZSP-7为链霉菌Streptomyces sp.。菌株ZZSP-7抑菌谱广,对多种植物病原菌均具有良好的抑菌效果。盆栽试验结果表明,在盆栽中菌株ZZSP-7对“红颜”和“甜查理”两个品种草莓炭疽病菌的防效分别为78.64%和82.81%,具有进一步开发和利用的前景。

关键词: 链霉菌, 筛选鉴定, 草莓, 胶孢炭疽菌, 防治效果

Abstract: In order to obtain excellent antagonistic bacteria against Colletotrichum gloeosporioides, a pathogen causes strawberry anthracnose, the soil from strawberry planting base was taken as antagonistic bacteria source, and the strains with the highest bacteriostatic rate were screened by indoor determination of their bacteriostatic activities. Then, the screened strains were classified and identified, and their bacteriostatic spectrum and control effect were evaluated. The results showed that total of 42 strains were isolated from soil, among which 5 strains with strong inhibitory efficacy on C. gloeosporioides were obtained. Among them, strain ZZSP-7 had the strongest antibacterial activity, and its antibacterial diameter was up to 17.6 mm after 5 day. According to morphological, physiological and biochemical characteristics and phylogenetic analysis based on 16s rDNA sequence, strain ZZSP-7 was identified as Streptomyces sp.. Strain ZZSP-7 had a wide antibacterial spectrum and has good antibacterial effect on various plant pathogens. The results of pots experiment showed that the control efficacy of strain ZZSP-7 on anthracnose of strawberry varieties "Hongyan" and "Sweet Charlie" were 78.64% and 82.81%, respectively, and the application prospect of biocontrol was acceptable.

Key words: Streptomyces sp., screening and identification, strawberry, Colletotrichum gloeosporioides, control efficacy

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