Huang HL, Zhu P, Zhou CX, Yan XJ, Zou YX, Lv PW. Detection of Skeletonema costatum based on loop-mediated isothermal amplification combined with lateral flow dipstick.
Mol Cell Probes 2017;
36:36-42. [PMID:
28826997 DOI:
10.1016/j.mcp.2017.08.003]
[Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 07/22/2017] [Accepted: 08/15/2017] [Indexed: 11/27/2022]
Abstract
We developed a new assay method, which combines loop-mediated isothermal amplification (LAMP) with a chromatographic lateral flow dipstick (LFD) for the rapid and special detection of the diatom Skeletonema costatum. Four groups of LAMP primers were derived from a conserved DNA sequence unique to S. costatum. The amplifications were carried out at 61, 63, and 65 °C for 60 min in various combinations by the quantitative PCR thermal cycler to confirm optimal primers and reaction temperature. The LAMP-LFD detection limit was 0.94 pg/μL of S. costatum genomic DNA and was 100 times more sensitive than conventional PCR. The LAMP-LFD method had high specificity and accurately identified S. costatum algal isolates, but not other algal isolates. The new LAMP-LFD assay can be used as a reliable and easy method to detect S. costatum.
Collapse