Identification and Fungicide Sensitivity of Fusarium spp. Associated with Root Rot of Scutellaria baicalensis in Shanxi Province, China.

IF 2.6 2区农林科学 Q2 PLANT SCIENCES Phytopathology Pub Date : 2024-07-01 Epub Date: 2024-06-10 DOI:10.1094/PHYTO-05-23-0173-R

Chunwei Wang, Dainan Hao, Wenhui Jiao, Jiangbo Li, Jiaqi Yuan, Yurong Ma, Xiaomin Wang, Ailing Xu, Meiqin Wang, Yan Wang

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Abstract

Fusarium root rot is usually classified as an extremely destructive soilborne disease. From 2020 to 2021, Fusarium root rot was observed in production areas and seriously affected the yield and quality of Scutellaria baicalensis in Shanxi Province, China. Based on morphological characteristics and combined analysis of the internal transcribed spacer region of ribosomal DNA and translation elongation factor 1-alpha sequences, 68 Fusarium isolates obtained in this work were identified as F. oxysporum (52.94%), F. acuminatum (20.59%), F. solani (16.17%), F. proliferatum (5.88%), F. incarnatum (2.94%), and F. brachygibbosum (1.47%). In the pathogenicity tests, all Fusarium isolates could infect S. baicalensis roots, presenting different pathogenic ability. Among these isolates, F. oxysporum was found to have the highest virulence on S. baicalensis roots, followed by F. acuminatum, F. solani, F. proliferatum, F. brachygibbosum, and F. incarnatum. According to fungicide sensitivity tests, Fusarium isolates were more sensitive to fludioxonil and difenoconazole, followed by carbendazim, thiophanate-methyl, and hymexazol. In brief, this is the first report of Fusarium species (F. oxysporum, F. acuminatum, F. solani, F. proliferatum, F. incarnatum, and F. brachygibbosum) as causal agents of root rot of S. baicalensis in Shanxi Province, China. The fungicide sensitivity results will be helpful for formulating management strategies of S. baicalensis root rot.

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中国山西省黄芩根腐病相关镰刀菌属的鉴定和杀菌剂敏感性。

镰刀菌根腐病通常被列为世界上破坏性极强的土传病害。2020 年至 2021 年，中国山西省黄芩产区出现了镰刀菌根腐病，严重影响了黄芩的产量和品质。根据形态特征以及核糖体 DNA 内部转录间隔区（ITS）和翻译延伸因子 1-α（TEF-1α）序列的综合分析，本研究获得的 68 个镰刀菌分离物被鉴定为 F.(52.94%)、F. acuminatum (20.59%)、F. solani (16.17%)、F. proliferatum (5.88%)、F. incarnatum (2.94%) 和 F. brachygibbosum (1.47%)。在致病性试验中，所有镰刀菌分离物都能感染黄芩根，但致病能力各不相同。其中，F. oxysporum 对黄芩根的致病力最强，其次是 F. acuminatum、F. solani、F. proliferatum、F. brachygibbosum 和 F. incarnatum。根据杀菌剂敏感性测试，镰刀菌分离株对氟啶虫酰胺和苯醚甲环唑更敏感，其次是多菌灵、甲基硫菌灵和霜霉威。简而言之，这是中国山西省首次报道镰刀菌（F. oxysporum、F. acuminatum、F. solani、F. proliferatum、F. incarnatum 和 F. brachygibbosum）是黄芩根腐病的病原菌。杀菌剂敏感性结果将有助于制定黄芩根腐病的防治策略。

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来源期刊

Phytopathology 生物-植物科学

CiteScore

5.90

自引率

9.40%

发文量

505

审稿时长

4-8 weeks

期刊介绍： Phytopathology publishes articles on fundamental research that advances understanding of the nature of plant diseases, the agents that cause them, their spread, the losses they cause, and measures that can be used to control them. Phytopathology considers manuscripts covering all aspects of plant diseases including bacteriology, host-parasite biochemistry and cell biology, biological control, disease control and pest management, description of new pathogen species description of new pathogen species, ecology and population biology, epidemiology, disease etiology, host genetics and resistance, mycology, nematology, plant stress and abiotic disorders, postharvest pathology and mycotoxins, and virology. Papers dealing mainly with taxonomy, such as descriptions of new plant pathogen taxa are acceptable if they include plant disease research results such as pathogenicity, host range, etc. Taxonomic papers that focus on classification, identification, and nomenclature below the subspecies level may also be submitted to Phytopathology.