华北农学报 ›› 2020, Vol. 35 ›› Issue (S1): 347-354. doi: 10.7668/hbnxb.20191183

所属专题: 薯类作物

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山东高密地区马铃薯疮痂病菌种类及致病性鉴定

陈利达, 李磊, 谢学文, 石延霞, 柴阿丽, 李宝聚   

  1. 中国农业科学院 蔬菜花卉研究所, 北京 100081
  • 收稿日期:2020-03-14 出版日期:2020-12-28
  • 通讯作者: 李宝聚(1967-),男,黑龙江饶河人,研究员,博士,主要从事蔬菜病害诊断与综合防控研究;李磊(1983-),男,山东德州人,副研究员,博士,主要从事蔬菜病害生物防治研究。
  • 作者简介:陈利达(1993-),男,河北邯郸人,在读博士,主要从事蔬菜病害诊断研究。
  • 基金资助:
    国家重点研发计划(2018YFD020080703);中国农业科学院科技创新工程项目(CAAS-ASTIP-IVFCAAS);农业部园艺作物生物学与种质创制重点实验室项目

Species and Pathogenicity Identification of Streptomyces Species Causing Potato Common Scab in Gaomi City, Shandong Province

CHEN Lida, LI Lei, XIE Xuewen, SHI Yanxia, CHAI Ali, LI Baoju   

  1. Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China
  • Received:2020-03-14 Published:2020-12-28

摘要: 为明确山东省高密地区马铃薯疮痂病的病原菌种类及其特征,2018-2019年从山东省高密市马铃薯主产区采集具有疮痂病病斑的马铃薯块茎,从病斑上共分离纯化到178个链霉菌菌株;采用薯片法、萝卜幼苗法及温室盆栽柯赫氏法则对马铃薯进行致病性试验,筛选到178个致病性较强的菌株。此外,将高密市5个地区所分离的马铃薯疮痂病菌株进行形态学鉴定、PCR分子鉴定和病原菌致病基因检测,之后根据16S rDNA基因的差异采用分子手段对所分离的致病菌株进行种类鉴定并构建系统发育树。结果显示:引起山东高密地区马铃薯疮痂病的病原菌主要包括4种链霉菌,分别为Streptomyces acidiscabiesStreptomyces scabiesStreptomyces luridiscabieiStreptomyces griseoaurantiacus,与聚类分析结果相一致。其中Streptomyces acidiscabies为链霉菌优势种群且新菌株鉴定为Streptomyces griseoaurantiacus,为国内新报道病原菌,说明我国山东高密地区马铃薯疮痂病病原菌种类和分布较为复杂。

关键词: 马铃薯疮痂病, 链霉菌, 分类, 致病性分析, 多样性

Abstract: To identify and characterize the species of Streptomyces causing potato common scab in Shandong Gaomi. The typical scabby tubers were collected from potato growing areas in Shandong Gaomi from 2018 to 2019. After isolating and purifying,178 Streptomyces strains were obtained from scabby tubers. The pathogenicity of the isolates was determined on tuber slices,radish seedlings method and Koch's rule in greenhouse. A total of 178 strains were screened as pathogenic strains and could induce typical scab symptoms on immature potato. In addition,the potato scab strains isolated in 5 areas of Gaomi City were subjected to morphological identification,PCR molecular identification and pathogenic gene detection. These pathogenic strains were identified and phylogenetic tree was constructed on the basis of the differences in 16S rDNA sequences. Results revealed four kinds of Streptomyces species were found in Gaomi City,Shandong Province,including Streptomyces acidiscabies, Streptomyces scabies, Streptomyces luridiscabiei and Streptomyces griseoaurantiacus, which were consistent with the cluster analysis results. Among them, Streptomyces acidiscabies are dominant species and Streptomyces griseoaurantiacus are newly discovered common scab pathogens in China. The results suggestd that the Streptomyces species causing potato scab had obvious composition diversity and distribution complexity in Shandong Gaomi.

Key words: Potato common scab, Streptomyces, Classification, Pathogenic identification, Diversity

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引用本文

陈利达, 李磊, 谢学文, 石延霞, 柴阿丽, 李宝聚. 山东高密地区马铃薯疮痂病菌种类及致病性鉴定[J]. 华北农学报, 2020, 35(S1): 347-354. doi: 10.7668/hbnxb.20191183.

CHEN Lida, LI Lei, XIE Xuewen, SHI Yanxia, CHAI Ali, LI Baoju. Species and Pathogenicity Identification of Streptomyces Species Causing Potato Common Scab in Gaomi City, Shandong Province[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2020, 35(S1): 347-354. doi: 10.7668/hbnxb.20191183.

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