First Report of Fusarium striatum Causing Root Rot Disease of Panax notoginseng in Yunnan, China

被引：2
|
作者：
Zhou, Xuan [1 ,2 ,3 ]
Luo, Chongyu [1 ,2 ,3 ]
Li, Kuixiu [1 ,2 ,3 ]
Zhu, Dan [3 ]
Jiang, Lihui [1 ,2 ,3 ]
Wu, Lixia [1 ,2 ,3 ]
Li, Youchun [3 ]
He, Xiahong [1 ,2 ,3 ]
Du, Yunlong [1 ,2 ,3 ]
机构：
[1] Yunnan Agr Univ, Coll Plant Protect, Kunming 650201, Yunnan, Peoples R China
[2] Yunnan Agr Univ, Key Lab Agro Biodivers & Pest Management Educ, Kunming 650201, Yunnan, Peoples R China
[3] Yunnan Agr Univ, State Key Lab Conservat & Utilizat Bio Resources, Kunming 650201, Yunnan, Peoples R China
来源：
PHYTON-INTERNATIONAL JOURNAL OF EXPERIMENTAL BOTANY | 2022年 / 91卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Panax notoginseng; Fusarium striatum; root rot disease; endophytic fungus; BIOLOGICAL-CONTROL; PATHOGENS;
D O I：
10.32604/phyton.2022.016972
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
Panax notoginseng is a traditional Chinese medicinal plant. Root rot of P. notoginseng is one of the most serious diseases affecting P. notoginseng growth and causes wilted leaves, fewer lateral roots and rotten roots. Root rot is a soil-borne disease, and mainly occurs from June to August in Yunnan Province when the temperatures are high and the air is humid. In this study, the endophytic fungal genus Fusarium isolate E-2018.1.22-#3.2 was obtained from a P. notoginseng embryo. Fusarium isolate E-2018.1.22-#3.2 was identified as Fusarium striatum based on morphological characteristics and molecular analysis. The fungus was found to have conidiophores and macroconidia, and its ITS, LSU and TEF-1 alpha genes shared 100%, 99.2% and 99% identities with the homologous genes of Fusarium striatum, respectively. Isolate F. striatum E-2018.1.22-#3.2 can cause root rot symptoms, including black, soft roots, fewer lateral roots and leaf wilt, in 93% of the experimental P. notoginseng plants, and could be re-isolated, fulfilling Koch's postulates. When the P. notoginseng plants were treated with the fungicide pyraclostrobin, isolate F. striatum E-2018.1.22-#3.2 was unable to cause root rot. We have therefore demonstrated that F. striatum E-2018.1.22-#3.2 is able to cause root rot disease in P. notoginseng. This is the first report of root rot disease caused by F. striatum on P. notoginseng in China.
引用
收藏
页码：13 / 20
页数：8
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