Occurrence of leaf spot caused by Colletotrichum plurivorum on cowpea in Fujian Province, China
文献类型： 外文期刊
作者： Dai, Yuli 1 ; Gan, Lin 1 ; Liu, Xiaofei 1 ; Lan, Chengzhong 1 ; Li, Zhiqiang 2 ; Yang, Xiujuan 1 ;
作者机构： 1.Fujian Acad Agr Sci, Inst Plant Protect, Fujian Engn Res Ctr Green Pest Management, Key Lab Monitoring & Integrated Management Crop Pe, Fuzhou 350013, Fujian, Peoples R China
2.Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pests, Beijing 100193, Peoples R China
关键词： Cowpea anthracnose; Colletotrichum plurivorum; Molecular identification; Pathogenicity; Vigna unguiculata
期刊名称：CROP PROTECTION （ 影响因子：2.8； 五年影响因子：3.0 ）
ISSN： 0261-2194
年卷期： 2024 年 176 卷
页码：
收录情况： SCI
摘要： Cowpea (Vigna unguiculata (L.) Walp.) is cultivated worldwide for vital food source and vegetable. During May to October 2021, a serious leaf spot disease occurred on cowpea in Pingnan prefecture, Fujian Province, China. The disease infected more than 60% of the cowpea leaves under natural conditions. The causal organism was recovered from diseased leaves exhibiting characteristic symptoms of brown spots, and was identified as Colletotrichum plurivorum Damm, Alizadeh & Toy. Sato according to morphological features and sequencing of the ribosomal DNA internal transcribed spacer (ITS), partial glyceraldehyde-3-phosphate dehydrogenase (GAPDH), calmodulin (CAL), actin (ACT), chitin synthase (CHS-1), and beta-tubulin (TUB2) gene sequences. Pathogenic assays were carried out using cowpea 'Yaoqianshu' at the five-to eight-leaf stage. The results indicated that all tested C. plurivorum isolates could infect healthy cowpea leaves, even in the lack of wounds, and cause leaf spot symptoms similar to originally observed on cowpea leaves in the fields. Finally, the identical isolates were successfully re-isolated from those of inoculated leaves. To our knowledge, this is the first report of C. plurivorum causing anthracnose on cowpea in Fujian Province, China.
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