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茶叶科学 ›› 2026, Vol. 46 ›› Issue (2): 318-330.doi: 10.13305/j.cnki.jts.2026.02.007

• 研究报告 • 上一篇    下一篇

西藏墨脱引起茶树叶枯病的两种镰刀菌新病原鉴定和生物学特性

金怀1, 崔婷1, 王楠1, 魏丽萍2, 张荣3, 巩文峰1,*   

  1. 1.西藏农牧大学植物科学学院,西藏 林芝 860000;
    2.西藏农牧大学林草学院,西藏 林芝 860000;
    3.农心作物科技股份有限公司,陕西 西安 710065
  • 收稿日期:2025-12-04 修回日期:2026-01-10 出版日期:2026-04-15 发布日期:2026-04-22
  • 通讯作者: *zkxygwf@xza.edu.cn
  • 作者简介:金怀,男,硕士研究生,主要从事茶树真菌病害方面的研究,jinhuai.cx@outlook.com。
  • 基金资助:
    西藏农牧学院研究生创新项目(YJS2024-04); 西藏自治区重点研发计划(XZ202201ZY0011N); 西藏农牧学院林学博士点(一期)(533325001); 西藏自治区中央引导地方项目(XZ202201YD0038C)

Identification and Biological Characterization of Two Novel Fusarium Pathogen Causing Tea Leaf Blight in Motuo Conty, Xizang

JIN Huai1, CUI Ting1, WANG Nan1, WEI Liping2, ZHANG Rong3, GONG Wenfeng1,*   

  1. 1. Xizang Agricultural and Animal Husbandry University, College of Plant Science, Linzhi 860000, China;
    2. Xizang Agricultural and Animal Husbandry University, College of Forestry and Grassland, Linzhi 860000, China;
    3. Norsyn Crop Science and Technology Co., Ltd., Xi'an 710065, China
  • Received:2025-12-04 Revised:2026-01-10 Online:2026-04-15 Published:2026-04-22

摘要: 2024年6—7月从西藏林芝墨脱县茶树叶枯病病叶中分离获得2种镰刀菌(Fusarium spp.)菌株,结合形态学特征、系统发育分析及科赫氏法则对其进行菌种鉴定。结果显示,2种镰刀菌分别被鉴定为Fusarium dracaenophilumFusarium asiaticum。科赫氏法则检验证实,F. dracaenophilumF. asiaticum均能诱发茶树叶枯病。不同茶树品种致病性研究显示,‘中黄1号’对两种病原的抗病性显著强于‘福鼎大白茶’。生物学特性研究发现,F. asiaticum的适宜生长温度为20~25 ℃,pH为7~9,蔗糖、麦芽糖、乳糖和酵母粉有利于其生长;F. dracaenophilum最适生长温度为25 ℃,最适pH为7,乳糖和酵母粉有利于其生长。研究结果丰富了镰刀菌病原多样性认知,为西藏茶园叶部病害防控提供了理论依据。

关键词: 茶树叶枯病, 镰刀菌, 形态学鉴定, 多基因系统发育分析

Abstract: In June and July 2024, two Fusarium spp. strains were isolated from blighted leaves of tea plants (Camellia sinensis) in Motuo County, Linzhi City, Xizang, China. Species identification was conducted using morphological characteristics, multi-locus phylogenetic analysis, and Koch's postulates. The results identified the strains as Fusarium dracaenophilum and Fusarium asiaticum. Pathogenicity tests confirm that both species induce tea leaf blight. In varietal pathogenicity assays, ‘Zhonghuang 1’ exhibited significantly stronger resistance to both pathogens than ‘Fuding Dabaicha’. The results of the biological characterization reveal that F. asiaticum exhibits optimal growth conditions at temperatures ranging from 20 ℃ to 25 ℃ and at pH levels between 7 and 9. The presence of sucrose, maltose, lactose, and yeast extract has been demonstrated to stimulate F. asiaticum growth. F. dracaenophilum exhibits optimal growth at 25 ℃ and pH 7, with lactose and yeast extract being the most favorable nutrients. These findings enhanced understanding of Fusarium pathogen diversity and provided a theoretical basis for managing foliar diseases in tea plantations in Xizang.

Key words: tea leaf blight, Fusarium spp., morphological identification, multilocus phylogenetic analysis

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