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Braley LE, Jewell JB, Figueroa J, Humann JL, Main D, Mora-Romero GA, Moroz N, Woodhall JW, White RA, Tanaka K. Nanopore Sequencing with GraphMap for Comprehensive Pathogen Detection in Potato Field Soil. Plant Dis 2023; 107:2288-2295. [PMID: 36724099 DOI: 10.1094/pdis-01-23-0052-sr] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Early detection of causal pathogens is important to prevent crop loss from diseases. However, some diseases, such as soilborne diseases, are difficult to diagnose due to the absence of visible or characteristic symptoms. In the present study, the use of the Oxford Nanopore MinION sequencer as a molecular diagnostic tool was assessed due to its long-read sequencing capabilities and portability. Nucleotide samples (DNA or RNA) from potato field soils were sequenced and analyzed using a locally curated pathogen database, followed by identification via sequence mapping. We performed computational speed tests of three commonly used mapping/annotation tools (BLAST, BWA-BLAST, and BWA-GraphMap) and found BWA-GraphMap to be the fastest tool for local searching against our curated pathogen database. The data collected demonstrate the high potential of Nanopore sequencing as a minimally biased diagnostic tool for comprehensive pathogen detection in soil from potato fields. Our GraphMap-based MinION sequencing method could be useful as a predictive approach for disease management by identifying pathogens present in field soil prior to planting. Although this method still needs further experimentation with a larger sample size for practical use, the data analysis pipeline presented can be applied to other cropping systems and diagnostics for detecting multiple pathogens.
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Affiliation(s)
- Lauren E Braley
- Department of Plant Pathology, Washington State University, Pullman, WA 99164-6430, U.S.A
| | - Jeremy B Jewell
- Department of Plant Pathology, Washington State University, Pullman, WA 99164-6430, U.S.A
| | - Jose Figueroa
- Department of Bioinformatics and Genomics, The University of North Carolina at Charlotte, Charlotte, NC 28223, U.S.A
- Department of Bioinformatics and Genomics, The University of North Carolina at Charlotte, Kannapolis, NC 28081, U.S.A
| | - Jodi L Humann
- Department of Horticulture, Washington State University, Pullman, WA 99164-6414, U.S.A
| | - Dorrie Main
- Department of Horticulture, Washington State University, Pullman, WA 99164-6414, U.S.A
| | - Guadalupe A Mora-Romero
- Unidad de Investigación en Ambiente y Salud, Universidad Autónoma de Occidente, Los Mochis, Sinaloa 81223, México
| | - Natalia Moroz
- Department of Plant Pathology, Washington State University, Pullman, WA 99164-6430, U.S.A
| | - James W Woodhall
- Parma Research and Extension Center, University of Idaho, Parma, ID 83660-6699, U.S.A
| | - Richard Allen White
- Department of Bioinformatics and Genomics, The University of North Carolina at Charlotte, Charlotte, NC 28223, U.S.A
- Department of Bioinformatics and Genomics, The University of North Carolina at Charlotte, Kannapolis, NC 28081, U.S.A
| | - Kiwamu Tanaka
- Department of Plant Pathology, Washington State University, Pullman, WA 99164-6430, U.S.A
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