首页|草莓黄单胞菌RPA-LF快速检测方法的建立与应用

草莓黄单胞菌RPA-LF快速检测方法的建立与应用

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建立一种适用于田间稳定、快速、准确地检测草莓黄单胞菌的技术方法,有助于该病原菌的早期诊断和有效控制.将重组酶聚合酶扩增(recombinase polymerase amplification,RPA)和胶体金侧流层析试纸条技术(lateral flow strip,LF)相结合.根据草莓黄单胞菌的限制性核酸内切酶亚基S基因序列保守区设计RPA特异引物及探针,通过对反应条件优化及对灵敏性、特异性与疑似样本的分析,成功建立了草莓黄单胞菌RPA-LF检测方法.该方法最佳反应条件为39℃恒温反应10 min,最低检测限为1.0×101 copies/μL,能够特异地检测出草莓黄单胞菌,从采集疑似症状植株到检测可在30 min内实现,而且用RPA-LF方法检测疑似样本结果与常规PCR检测方法一致.综上,建立的草莓黄单胞菌RPA-LF检测方法快速、简单、准确、可视化,可用于该病原菌的早期诊断.
Development and evaluation of rapid visualization detection method for Xanthomonas fragariae based on RPA-LF
The objective of this study was to establish a stable,rapid,and accurate technical method for the detection of Xanthomonas fragariae in the field.Achieving early diagnosis and effective control of Xanthomonas fragariae.This study established an RPA-LF assay for Xanthomonas fragariae.We designed RPA-specific primers and probes in the conserved region of the restriction endonuclease subunit S gene sequence of Xanthomonas fragariae.And we also optimized the reaction conditions of the method,analyzed its sensitivity and specificity.Finally,this study detected suspicious samples performed.The optimal reaction conditions were 39℃for 10 min.The minimum detection limit was 1.0 × 101 copies/μL.The method was able to detect Xanthomonas fragariae specifically.It took only 30 min from the collection of the suspect plant to the detection of Xanthomonas fragariae.The RPA-LF assay for Xanthomonas fragariae established in this study is rapid,simple,accurate.Eventually,we can visualize this pathogen for early diagnosis.

Xanthomonas fragariaeRPA-LF assayfieldearly diagnosis

史春佳、李刚、刘林川、秦梦瑶、刘丽锋、宋艳红、赵霞、周厚成

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中国农业科学院郑州果树研究所,河南 450009

草莓黄单胞菌 RPA-LF检测 田间 早期诊断

国家重点研发计划河南省科技重大专项河南省大宗水果产业技术体系建设项目中国农科院科技创新工程项目

2022YFD1600700221100110400HARS-22-09-G2CAAS-ASTIP-2022-ZFRI

2024

中国果树
中国农业科学院果树研究所

中国果树

CSTPCD
影响因子:0.45
ISSN:1000-8047
年,卷(期):2024.(4)
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