Rapid and sensitive detection of potato cyst nematode by loop-mediated isothermal amplification assay.

UNLABELLED

Cyst nematodes of the species and are devastating parasites of the potato crop. Early detection of cyst nematodes in the field is critical for adopting an appropriate management strategy. A specific and sensitive loop-mediated isothermal amplification (LAMP) assay using four oligonucleotide primers has been developed to amplify the internal transcribed spacer region (ITS) of ribosomal DNA of potato cyst nematode The PCN-LAMP reaction could be completed within 75 min at 68 °C followed by termination at 85 °C for 7 min. The primers exhibited specificity for and did not detect any other tested genera of plant parasitic or entomopathogenic nematodes. LAMP reaction was highly sensitive, suitable for crude genomic DNA and could successfully detect DNA up to femtogram quantity. This assay is rapid, cost effective and requires minimal instrumentation. It will facilitate the detection of at field and point-of-care labs and help in the interception of infested plant material/soil samples at quarantine stations independent of a professional nematologist.

SUPPLEMENTARY INFORMATION

The online version contains supplementary material available at 10.1007/s13205-021-02830-8.