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Three Sclerotinia species as the cause of white mold on pea in Chongqing and Sichuan of China

文献类型： 外文期刊

作者： Deng Dong 1 ; Sun Su-li 1 ; Du Chen-Zhang 2 ; Xiang Chao 3 ; Long Jue-chen 2 ; Chen Wei-dong 4 ; Zhu Zhen-dong 1 ;

作者机构： 1.Chinese Acad Agr Sci, Inst Crop Sci, Beijing 100081, Peoples R China

2.Chongqing Acad Agr Sci, Chongqing 402160, Peoples R China

3.Sichuan Acad Agr Sci, Crop Res Inst, Chengdu 610066, Peoples R China

4.Washington State Univ, US Dept Agr Agr Res Serv, Pullman, WA 99164 USA

关键词： Pisum sativum  white mold; Scierotinia scierotiorum; Scientinia minor; Scierotinia trifoliorum

期刊名称：JOURNAL OF INTEGRATIVE AGRICULTURE （ 影响因子：4.6； 五年影响因子：4.5 ）

ISSN： 2095-3119

年卷期： 2021 年 20 卷 11 期

页码：

收录情况： SCI

摘要： White mold of pea caused by Sclerotinia sclerotiorum is a common disease in China. However, we discovered that the diverse Sclerotinia species could cause white mold on pea plants in Chongqing and Sichuan of China during recent disease surveys. Thus, the objective of this study was to confirm the causal agents from diseased pea plants. The obtained isolates of white mold from Chongqing and Sichuan were identified by morphological characters and molecular characterization to determine the pathogen species, and their pathogenicity was confirmed on pea through completing Koch's postulates. Fungal isolates of Sclerotinia-like were obtained from diseased plants or sclerotia. Based on morphological characteristics and molecular characterization, 30 isolates were identified to three species, six isolates as S. minor, seven as S. sclerotiorum, and 17 as S. trifoliorum. In pathogenicity tests on pea cultivars Zhongwan 4 and Longwan 1, all 30 isolates caused typical symptoms of white mold on the inoculated plants, and the inoculated pathogens were re-isolated from the diseased plants. This study confirmed that white mold of pea was caused by three Sclerotinia species, S. sclerotiorum, S. minor and S. trifoliorum in Chongqing and Sichuan. It is the first report that S. minor and S. trifoliorum cause white mold of pea in Southwest China.

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