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中国生物防治学报 ›› 2025, Vol. 41 ›› Issue (5): 1179-1187.DOI: 10.16409/j.cnki.2095-039x.2025.02.058

• 研究论文 • 上一篇    

草莓根腐病病原菌的分离鉴定及哈茨木霉TW21990对其防治效果

李红梅1, 魏艳丽1, 杨凯1, 扈进冬1, 李杨2, 赵忠娟1, 李纪顺1, 杨建闻2   

  1. 1. 齐鲁工业大学(山东省科学院)生态研究所/山东省应用微生物重点实验室, 济南 250013;
    2. 山东泰诺药业有限公司, 潍坊 262200
  • 收稿日期:2024-11-15 发布日期:2025-10-22
  • 作者简介:李红梅,硕士,高级工程师,E-mail:hmlihm@163.com;通信作者:李纪顺,本科,应用研究员,E-mail:sdyewu2@163.com
  • 基金资助:
    齐鲁工业大学(山东省科学院)科教产融合试点工程重大创新类项目(2025ZDZX18),齐鲁工业大学(山东省科学院)科教产融合创新试点工程国合专项项目(2024GH21、2024GH15);山东省科技型中小企业创新能力提升工程项目(2022TSGC2370);枣庄市国家可持续发展议程创新示范区科技专项(2024SFQZX007)

Isolation and Identification of Trichoderma harzianum TW21990 and Its Control Effect on Strawberry Root Rot

LI Hongmei1, WEI Yanli1, YANG Kai1, HU Jindong1, LI Yang2, ZHAO Zhongjuan1, LI Jishun1, YANG Jianwen2   

  1. 1. Shandong Provincial Key Laboratory of Applied Microbiology/Ecology Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250013, China;
    2. Shandong Tainuo Pharmaceutical Co., Ltd., Weifang 262200, China
  • Received:2024-11-15 Published:2025-10-22

摘要: 为筛选可有效防控济南历城区草莓根腐病的木霉菌株,本研究通过对草莓根腐病病原菌进行分离,结合形态学特征与ITS序列分析,明确病原菌种类。以感病性强的优势病原菌为靶标筛选拮抗木霉菌,并通过盆栽试验与田间小区试验系统评价拮抗木霉的生防效果。结果表明,引起济南市历城区草莓根腐病的优势病原菌为炭疽菌Colletotrichum spp.,其中菌株CM9表现出较强的致病性,经多基因序列分析,鉴定该菌株为暹罗炭疽菌C.siamense;通过平板对峙试验筛选出拮抗活性突出的哈茨木霉Trichoderma harzianum TW21990,其产生的挥发性和可溶性代谢物对CM9的抑制率分别为53.32%和63.24%。盆栽试验与田间小区试验结果进一步证实TW21990对草莓根腐病的防治效果分别为61.14%和60.70%。此外,研究还发现经TW21990处理后草莓果实的品质得到显著改善,与对照相比,果实Vc、可溶性糖和可溶性固形物含量分别提升了32.89%、32.06%和11.96%。综上可见,哈茨木霉TW21990在草莓生产中具有较大的应用潜力。

关键词: 草莓根腐病, 病原菌鉴定, 哈茨木霉TW21990

Abstract: The aim of this study was to screen antagonistic Trichoderma strains with biocontrol effects against strawberry root rot in Licheng District, Jinan city. The pathogens causing strawberry root rot were identified based on morphology and ITS sequence. The antagonistic Trichoderma strains were screened against dominant pathogens with strong susceptibility, and the biocontrol effect of selected Trichoderma strains was evaluated by pot experiment and field test. The results showed that the dominant pathogens of strawberry root rot in Licheng District were Colletotrichum spp., among which a highly susceptible strain of CM9 was identified as C. siamense by polygene sequence characterization. Trichoderma harzianum TW21990 was selected for its excellent antagonistic activity by plate confrontation, with inhibition rates of volatile and soluble metabolites against C. siamense CM9 reaching 53.32% and 63.24%, respectively. Pot experiment and field test demonstrated that control efficacy of TW21990 against strawberry root rot was 61.14% and 60.70%, respectively. In addition TW21990 treatment significantly improved the quality of strawberry fruit. The content of vitamin C, soluble sugar and soluble solids in the fruit with increased by 32.89%, 32.06% and 11.96% respectively compared with the control group. In conclusion, TW21990 showed great application potential for strawberry production.

Key words: strawberry root rot, pathogen identification, Trichoderma harzianum TW21990

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