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Detection of Peronophythora litchii on lychee by loop-mediated isothermal amplification assay

文献类型: 外文期刊

作者: Kong, Guanghui 1 ; Li, Tinglu 1 ; Huang, Weixiong 1 ; Li, Minhui 1 ; Shen, Wankuan 2 ; Jiang, Liqun 1 ; Hsiang, Tom 3 ; J 1 ;

作者机构: 1.South China Agr Univ, Guangdong Prov Key Lab Microbial Signals & Dis Co, Dept Plant Pathol, Guangzhou 510642, Peoples R China

2.South China Agr Univ, Sci Observing & Expt Stn Crop Cultivat South Chin, Coll Agron, Guangzhou 510642, Peoples R China

3.Univ Guelph, Sch Environm Sci, Guelph, ON N1G 2W1, Canada

4.Guangdong Acad Agr Sci, Rice Res Inst, Guangdong Prov Key Lab New Technol Rice Breeding, Guangzhou, Peoples R China

5.Guangdong Lab Lingnan Modem Agr, Maoming Branch, Guangzhou, Peoples R China

关键词: Peronophythora litchii; Lychee; Loop-mediated isothermal amplification; Nested PCR

期刊名称:CROP PROTECTION ( 影响因子:2.571; 五年影响因子:3.11 )

ISSN: 0261-2194

年卷期: 2021 年 139 卷

页码:

收录情况: SCI

摘要: Downy blight caused by Peronophythora litchii is one of the most destructive diseases of lychee (Litchi chinensis Sonn.). Early diagnosis of the P. litchii pathogen should be the top priority for addressing disease epidemics and management. In this study, loop-mediated isothermal amplification (LAMP) assays targeting the M90 gene sequences were developed for specific detection of P. litchii. The detection limit of LAMP assay was 10 pg genomic DNA of P. litchii in 25 mu L reaction mixtures. LAMP assay and nested polymerase chain reaction (PCR) assay showed higher sensitivity than conventional PCR. The LAMP assay could also detect the presence of P. litchii in infected leaves, fruits and soils. This study provides a simple, highly sensitive, rapid and reliable protocol for the early diagnosis of P. litchii on lychee.

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