Fig. 6

Community-based measurements of radial extension on media made from locally-sourced and centrally-provided Pringles™ are well correlated (R² = 0.90, n = 3). We distributed a measurement kit containing our proposed reference materials: G. lucidum (10597-SS1), T. versicolor (FP101664-Spp), S. commune (4.8B), P. chrysosporium (RP-78), and centrally-provided Original-flavor Pringles™. Participating labs also acquired their own local form of Original-flavor Pringles™ and used both substrate sources for radial extension experiments. Each data point represents the reported rates by each participating laboratory. The x- and y- components of each data point indicate the mean radial extension rate in millimeters per day for a given organism grown on centrally-provided Pringles™ versus the mean radial extension rate of the organism grown on locally-sourced Pringles™, respectively. Replicates were grouped by lab, organism, and substrate. Error bars indicate the standard deviation in the x- and y- axis. The blue line indicates the linear regression model with corresponding 95% confidence interval (shaded blue)