Developing a Real-Time PCR Assay for Detection and Quantification of Pratylenchus neglectus in Soil Public Deposited

http://ir.library.oregonstate.edu/concern/defaults/hq37vp19d

To the best of our knowledge, one or more authors of this paper were federal employees when contributing to this work. This is the publisher’s final pdf. The published article is copyrighted by The American Phytopathological Society and can be found at:  https://www.apsnet.org/publications/Pages/default.aspx.

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  • Pratylenchus neglectus is one of the most widespread and economically important nematodes that invades plant roots and restricts wheat productivity in the Pacific Northwest. It is challenging to quantify P neglectus using microscopic methods for studies that require large-scale sampling, such as assessment of rotation crops, wheat cultivars, and other management practices. A real-time quantitative polymerase chain reaction (qPCR) assay was developed to detect and quantify P. neglectus from DNA extracts of soil. The primers, designed from the internal transcribed spacer region of rDNA, showed high specificity with a single melt curve peak to DNA from eight isolates of P. neglectus but did not amplify DNA from 28 isolates of other plant-parasitic and non-plant-parasitic nematodes: A standard curve (R-2 = 0.96; P < 0.001) was generated by amplifying DNA extracted from soil to which nematodes were added. The soil standard curve was validated using sterilized soil inoculated with lower numbers of P. neglectus. A significant positive relationship (R-2 = 0.66; P < 0.001) was observed for nematode numbers quantified from 15 field soils using qPCR and the Whitehead tray and microscopic method but the qPCR generally tended to provide higher estimates. Real-time PCR potentially provides a useful platform for efficient detection and quantification of P. neglectus directly from field soils.
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  • Yan, G., Smiley, R., Okubara, P., Skantar, A., & Reardon, C. (2013). Developing a real-time PCR assay for detection and quantification of pratylenchus neglectus in soil. Plant Disease, 97(6), 757-764. doi:10.1094/PDIS-08-12-0729-RE
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  • description.provenance : Made available in DSpace on 2013-07-01T16:40:07Z (GMT). No. of bitstreams: 1 YanGuipingCropSoilScienceDevelopingRealTime.pdf: 313895 bytes, checksum: 2b3043e5181745bdd4cc5a85499aad76 (MD5) Previous issue date: 2013-06
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  • description.provenance : Approved for entry into archive by Deborah Campbell(deborah.campbell@oregonstate.edu) on 2013-07-01T16:40:07Z (GMT) No. of bitstreams: 1 YanGuipingCropSoilScienceDevelopingRealTime.pdf: 313895 bytes, checksum: 2b3043e5181745bdd4cc5a85499aad76 (MD5)

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