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中国农学通报 ›› 2021, Vol. 37 ›› Issue (27): 100-104.doi: 10.11924/j.issn.1000-6850.casb2021-0308

• 植物保护·农药 • 上一篇    下一篇

四川茂县花椒根腐病病原菌的分离与鉴定

李志克1(), 唐蓉2, 黄小琴1, 张蕾1, 张重梅1, 鲜赟曦1, 何天伟3, 周西全1, 刘勇1, 杨潇湘1()   

  1. 1四川省农业科学院植物保护研究所,农业农村部西南作物有害生物综合治理重点实验室,成都 610066
    2茂县林业和草原局,四川茂县 623200
    3营山县农业农村局,四川营山 637700
  • 收稿日期:2021-03-24 修回日期:2021-05-13 出版日期:2021-09-25 发布日期:2021-10-28
  • 通讯作者: 杨潇湘
  • 作者简介:李志克,女,1999年出生,四川凉山人,主要从事植物病害生物防治研究。通信地址:610066 四川省成都市锦江区静居寺20号 四川省农业科学院植物保护研究所,Tel:028-84504089,E-mail: fbk101022@163.com
  • 基金资助:
    四川省农业科学院青年领军人才研究基金“茂县花椒根腐病的病原鉴定及其生物学特性研究”(2020LJRC007)

The Pathogen Causing Root Rot in Zanthoxylum bungeanum in Mao County of Sichuan Province: Isolation and Identification

Li Zhike1(), Tang Rong2, Huang Xiaoqin1, Zhang Lei1, Zhang Zhongmei1, Xian Yunxi1, He Tianwei3, Zhou Xiquan1, Liu Yong1, Yang Xiaoxiang1()   

  1. 1Institute of Plant Protection, Sichuan Academy of Agricultural Sciences, Key Laboratory of Integrated Pest Management in Southwest Agriculture Crops of Ministry of Agriculture and Rural Affairs, Chengdu 610066
    2Forestry and Grassland Bureau of Mao County, Mao County Sichuan 623200
    3Agriculture and Rural Bureau of Yingshan County, Yingshan Sichuan 637700
  • Received:2021-03-24 Revised:2021-05-13 Online:2021-09-25 Published:2021-10-28
  • Contact: Yang Xiaoxiang

摘要:

旨在明确引起阿坝藏族羌族自治州茂县花椒根腐病的病原菌种类,为科学有效防治该病提供理论参考。以采自茂县的花椒根腐病病根为材料,通过组织分离法、致病性测定、形态学观察与基于核糖体转录间隔区序列(ITS)和延长因子基因(tef1)的分子鉴定相结合进行病原菌的分离鉴定。结果表明,病原菌菌丝初为灰白色,后为兰褐色或紫红色。大型分生孢子为镰刀形,小型分生孢子呈肾形。分子鉴定结果显示,该病原菌在基于ITS和tef1序列构建的系统发育进化树上与腐皮镰孢菌类群处于同一分支。根据形态学和分子鉴定结果,将引起四川茂县花椒根腐病的病原菌鉴定为腐皮镰孢菌(Fusarium solani)。

关键词: 花椒, 根腐病, 病原真菌, 分离鉴定, 腐皮镰孢菌

Abstract:

To identify the pathogen species causing root rot in Zanthoxylum bungeanum in Mao County, Aba Tibetan and Qiang Autonomous Prefecture, and provide theoretical reference for scientific and effective treatment of this disease, the rot roots of Z. bungeanum were collected from Mao County and the pathogen was isolated and identified by tissue isolation method, pathogenicity determination, morphological characteristics and molecular identification which was based on ITS and tef1 gene sequences. The results showed that the mycelium of pathogen was gray white at the beginning, and then became blue brown or purple red. Large conidia of the pathogen were sickle-shaped and small conidia were kidney-shaped. Phylogenetic analysis based on ITS and tef1 gene sequences showed that the pathogen was attributed to the same branch with Fusarium solani in the phylogenetic tree. According to morphology and molecular identification, the pathogen of root rot in Z. bungeanum in Mao County of Sichuan Province was identified as F. solani.

Key words: Zanthoxylum bungeanum, root rot, pathogenic fungi, isolation and identification, Fusarium solani

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