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Pd Surveillance Sample Storage-Extraction Experiment Data Release

Published by U.S. Geological Survey | Department of the Interior | Catalog Last Checked: May 05, 2026 at 07:55 PM | Dataset Last Updated: May 12, 2025 at 12:00 AM
Storage-Extraction_Experiment.csv: These data include the qPCR results (Ct values and copy numbers) of DNA extracted from swab samples inoculated with Pd conidia (1,000, 10,000, or 100,000 conidia), stored at various temperatures (ambient temperature, 4°C, or -20°C), with or without RNAlater® preservative, for various durations (3 days, 1 month, or 3 months), and extracted with either a Blood and Tissue Kit-based or PrepMan-based protocol. This data set was used to evaluate the effect of both storage condition and DNA extraction method on Pd DNA recovery from swab samples. LOD_Experiment.csv: These data include qPCR results (Ct values and copy numbers) of DNA extracted from swab samples using either a Blood and Tissue Kit-based or a PrepMan-based protocol following inoculation with a 1:2 dilution series of Pd conidia (4 to 256 conidia). An additional inoculation treatment of 10,000 conidia was also included with this data set. This data set was used to establish and compare the lower limit of detection (in terms of conidia concentration) for the two DNA extraction protocols.

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