茶叶科学2026，Vol.46Issue(2)：318-330,13.
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
Identification and Biological Characterization of Two Novel Fusarium Pathogen Causing Tea Leaf Blight in Motuo Conty,Xizang
摘要
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.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Key words
tea leaf blight/Fusarium spp./morphological identification/multilocus phylogenetic analysis分类
农业科技引用本文复制引用
金怀,崔婷,王楠,魏丽萍,张荣,巩文峰..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[J].茶叶科学,2026,46(2):318-330,13.基金项目
西藏农牧学院研究生创新项目(YJS2024-04) （YJS2024-04）
西藏自治区重点研发计划(XZ202201ZY0011N) （XZ202201ZY0011N）
西藏农牧学院林学博士点(一期)(533325001) （一期）
西藏自治区中央引导地方项目(XZ202201YD0038C) （XZ202201YD0038C）
