ArticlePloS one2023
On-site detection system of Candidatus Liberibacter asiaticus by using TaqMan probe-based insulated isothermal polymerase chain reaction (iiPCR).
Article in PloS one, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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3 authors at 2 institutions in 1 country.
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Abstract
Citrus Huanglongbing (HLB) is one of the most destructive diseases of citrus plants caused by the obligate and phloem-limiting bacterium Candidatus Liberibacter asiaticus (Las). Reliable detection methods are important for successful control of the disease. This study was aimed to develop a rapid and user-friendly on-site detection system for Las using the TaqMan probe-based insulated isothermal polymerase chain reaction (iiPCR) assay. The Las-specific on-site detection system could be completed within one hour by simple DNA extraction coupled with a portable POCKIT device, which can perform PCR amplification and automatically provide qualitative results derived from fluorescence signals. The sensitivity of the TaqMan probe-iiPCR assay could be as low as single copy of Las, comparable to a real-time PCR method. Further testing of the field citrus samples showed 100% agreement between the TaqMan probe-iiPCR assay and the real-time PCR method, and the on-site detection system also demonstrated a great performance of Las detection. With high specificity and sensitivity, the on-site detection system developed in this study becomes a simple, rapid and powerful tool for detecting Las in fields.
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