| 草莓褐色叶斑病病原菌Pilidium lythri鉴定及室内防治药剂筛选 |
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| 引用本文： | 闫奕彤, 孙浚源, 李福鑫, 张桂军, 闫哲, 黄中乔, 高慧鸽, 毕扬. 草莓褐色叶斑病病原菌Pilidium lythri鉴定及室内防治药剂筛选[J]. 农药学学报, 2023, 25(5): 1076-1084. DOI: 10.16801/j.issn.1008-7303.2023.0063 |
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| 作者姓名： | 闫奕彤 孙浚源 李福鑫 张桂军 闫哲 黄中乔 高慧鸽 毕扬 |
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| 作者单位： | 1.北京农学院 农业农村部北方城市重点实验室，北京 102206;2.中国农业大学 植物病理学系，北京 100193 |
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| 摘 要： | 近年来，由病原菌Pilidium lythri引起的草莓褐色叶斑病，是一种在中国发生严重的新病害。作者在2015年至2017年间，从北京市昌平区、山东省诸城市和湖南省娄底市采集有症状的草莓样品共90株，每地30株，根据形态学特征、分子生物学及系统发育分析，其中26株分离物被鉴定为P. lythri， 并且山东和湖南系首次发现由P. lythri引起的草莓褐色叶斑病。鉴于目前中国还没有登记用于防治草莓褐色叶斑病的杀菌剂。本研究通过室内毒力测定法测定了26株P. lythri菌株对8种常用杀菌剂和1种新型杀菌剂双苯菌胺(SYP-14288)的敏感性。结果表明：SYP-14288对P. lythri菌丝生长的抑制活性最强，平均EC50值为(0.33 ± 0.06) μg/mL，可将其作为防治草莓褐色叶斑病的首选药剂；氟环唑、苯醚甲环唑、咪鲜胺、戊唑醇、百菌清和腈菌唑对P. lythri的平均EC50值在3.92~72.58 μg/mL之间，其中菌株对嘧菌酯和代森锰锌的敏感性较低。该研究结果可为合理使用杀菌剂防治由P. lythri引起的草莓褐色叶斑病提供参考。
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| 关 键 词： | Pilidium lythri 草莓褐色叶斑病 菌丝生长 双苯菌胺 |
| 收稿时间： | 2022-12-06 |
First report of tan-brown rot[Hainesia lythri]on strawberry fruits in Poland |
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| YAN Yitong, SUN Junyuan, LI Fuxin, ZHANG Guijun, YAN Zhe, HUANG Zhongqiao, GAO Huige, BI Yang. Identification of Pilidium lythri and screening of fungicides in vitro[J]. Chinese Journal of Pesticide Science, 2023, 25(5): 1076-1084. DOI: 10.16801/j.issn.1008-7303.2023.0063 |
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| Authors: | YAN Yitong SUN Junyuan LI Fuxin ZHANG Guijun YAN Zhe HUANG Zhongqiao GAO Huige BI Yang |
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| Affiliation: | 1.Key Laboratory for Northern Urban Agriculture of Ministry of Agriculture and Rural Affairs, Beijing University of Agriculture, Beijing 102206, China;2.Department of Plant Pathology, China Agricultural University, Beijing 100193, China |
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| Abstract: | In recent years, strawberry tan-brown leaf spot disease caused by Pilidium lythri is a serious new disease that has occurred in China. Between 2015 and 2017, a total of 90 symptomatic samples were collected from Changping District, Beijing City; Zhucheng County, Shandong Province; and Loudi City, Hunan Province in China, with 30 samples from each district. Twenty-six fungal isolates were identified as P. lythri based on morphology, molecular biology, and phylogenetic analyses. This is the first report of P. lythri caused strawberry tan-brown spot in Shandong and Hunan Provinces in China. At present, there are no registered fungicides in China for controlling tan-brown spot disease on strawberry caused by P. lythri. In this study, the susceptibility of 26 isolates to eight commonly used fungicides and novel fungicide SYP-14288 were determined in vitro. The result shows that SYP-14288 has the strongest inhibitory activity on the mycelial growth of 26 isolates of P. lythri, with an average EC50 value of (0.33 ± 0.06) μg/mL, can be used as an effective fungicide for the control of strawberry tan-brown leaf spot disease. The average EC50 values were from 3.92 μg/mL to 72.58 μg/mL for epoxiconazole, difenoconazole, prochloraz, tebuconazole, chlorothalonil, and myclobutanil. Among them, azoxystrobin had lower toxicity, and mancozeb had the lowest inhibitory activity. The results of this study can provide an important reference for the rational use of fungicides to control strawberry tan-brown spot disease. |
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| Keywords: | Pilidium lythri strawberry tan-brown leaf spot disease mycelial growth SYP-14288 |
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