This dataset collates measures of Michaelis-Menten root uptake parameters for several nutrients based on reported literature. The analysis appears in a review article by Marcus Griffiths (mdgriffiths at noble.org) and Larry York (lmyork at noble.org). Please cite this repository and the review article if the data is reused. Citation: Griffiths, M. G., York, L. M. (In Press) Targeting root ion uptake kinetics to increase plant productivity and nutrient use efficiency. Plant Physiology. https://doi.org/10.1104/pp.19.01496 File descriptions and use The R script assumes that all data files are in the working directory and that the "tidyverse" meta-package is installed. Kinetics_metaanalysis_all_files_v2.zip - Contains all the files. Kinetics_metaanalysis_column_definitions.txt - Definitions of column names used in data files (not used by R script) Kinetics_metaanalysis_csv.csv - Complete dataset in CSV format (used by R script) Kinetics_metaanalysis_excel.xlsx - Complete dataset in Excel format (not used by R script) Kinetics_metaanalysis_figure_subset.csv - Subset of total data used for figure generation (used by R script) Kinetics_metaanalysis_figures_code.R - Required R script for statistical analysis Version 2 of this repository includes minor updates to include new papers and data.