4.5 Article

PCR and isothermal-based molecular identification of the stored-product psocid pest Lepinotus reticulatus (Psocoptera: Trogiidae)

Journal

JOURNAL OF STORED PRODUCTS RESEARCH
Volume 49, Issue -, Pages 184-188

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jspr.2012.02.001

Keywords

Lepinotus; Molecular diagnostics; SYBR Green qPCR; CO1; Isothermal amplification

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Funding

  1. Oklahoma Agricultural Experiment Station [OKL02695, OKL02773]
  2. Czech project MZE [0002700604]

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Psocids of the genera Liposcelis and Lepinotus (Psocoptera) are well known small, soft-bodied stored-product pests that are difficult to identify using morphological characteristics, particularly the immature stages. Methods for quick, sensitive, and accurate identification of stored-product psocid species belonging to these genera are required for identification, discrimination, pest management, and inspection, and quarantine of imported grain. A specific primer set, RetCO1F/RetCO1R, was designed by targeting consensus sequences from multiple alignments of the CO1 gene of Lepinotus reticulatus for use in end point PCR, SYBR Green qPCR, and HDA. Lepinotus and Liposcelis species were tested to confirm the primer specificity. The described primer set allowed accurate identification of L. reticulatus, producing an amplicon of 119 bp in the three described assays. The primer set yielded a detection limit as low as 10 pg. 100 fg, and 1 ng using end point PCR, SYBR Green real time PCR, and HDA, respectively. All tests are accurate, rapid, sensitive, and useful for L reticulatus identification and have multiple applications including biosecurity and forensic entomology. (C) 2012 Elsevier Ltd. All rights reserved.

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