2019/04/25 by Jia Yu, Danyu Shen, Tingting Dai +3 · 1 citation
Agricultural and Biological Sciences · Biochemistry, Genetics and Molecular Biology · #Plant Pathogens and Fungal Diseases #Plant Pathogens and Resistance
paper · doi:10.1111/lam.13166
openalex publication_date 2019/04/25 · openalex created_date 2019/05/03 · openalex updated_date 2026/07/30
Phytophthora capsici is an important oomycete pathogen that causes devastating diseases in various crops. Methods for the rapid detection of P. capsici are important for disease control and eradication programmes. Here, we developed an assay based on lateral flow strip-based recombinase polymerase amplification (LF-RPA) for the rapid and equipment-free detection of P. capsici. The specific primers and a probe were designed using the sequence of Ypt1, and the optimal assay conditions were 40°C for 20 min. The specificity of the assay was verified using closely related oomycetes and fungal species, and its detection limit was 10 pg of genomic DNA. In combination with a simple DNA extraction method, the LF-RPA assay enabled detection of P. capsici in diseased pepper samples without specialized equipment within 30 min. Consequently, the LF-RPA assay developed in this study enables rapid and equipment-free detection of P. capsici and has potential for further development as a diagnostic kit for application in the field or in resource-limited laboratories. SIGNIFICANCE AND IMPACT OF THE STUDY: We developed a novel assay based on lateral flow strip-based recombinase polymerase amplification (LF-RPA) for the rapid and equipment-free detection of Phytophthora capsici. In combination with a simple DNA extraction method, the LF-RPA assay detected P. capsici in field samples without specialized equipment within 30 min. The assay has potential for further development as a diagnostic kit for application in the field or in resource-limited laboratories.