Species: Species of plant for reported uptake rates
Line: Cultivar or genotype information
Plant_age_d: Plant age at uptake rate determination (days)
Root_sample_type: Roots sample type for uptake assay, either excised from shoots or still intact
Root_class: Root class used for uptake assay, either the whole root system or a specifc root class eg. Lateral roots only
Nutrient: Focal nutrient for reported uptake rates 
Concentration_growth_solution_uM: Molarity of focal nutrient during growth of plant before uptake assay (uM)
Kinetics_experiment_design: Type of experiment design used for uptake assay, either depletion over-time, depletion over-ranges or influx only
Root_measure: Root measure used for determining specific uptake rates, either by root length, root weight, root surface area or reported multiple measures
Plant_pretreatment: Pretreatment method used before uptake assay, either no pretreatment, induction only, deprivation only or both induction and deprivation
Kinetics_lowest_concentration_tested_uM: Lowest concentration used in experiment for determining uptake rates
Kinetics_highest_concentration_tested_uM: Highest concentration used in experiment for determining uptake rates
Imax_rdw_umol.gdw.h: Specific uptake rate reported in umol by gram dry root weight per hour. If reported as fresh root weight the values were multiplying by 12 (Raman et al., 1995) and labelled in 'gfw_converted_gdw_y.n' column
Imax_length_umol.cm.h: Specific uptake rate reported in umol by cm root length per hour.
Imax_surfacearea_umol.cm2.h: Specific uptake rate reported in umol by cm2 root surface area per hour.
Km_uM: Michaelis constant value (uM)
Cmin_uM: Focal nutrient minimum concentration at which net postive uptake occurs(uM)
Deprivation_time_h: Number of hours plant was deprived of focal nutrient before uptake assay (h)
Induction_concentration_uM: Concentration of focal nutrient used to induce the plant before uptake assay (uM)
Induction_time_h: Number of hours plant was induced with focal nutrient before uptake assay (h)
gfw_converted_gdw_y.n: Yes/no if uptake rates were reported by fresh weight and therefore converted to dry weight by multiplying by 12 (Raman et al., 1995)
Reference: Paper reference for collated uptake rates
Notes: Additional information in paper reference that is relevant to the reported uptake rates or experiment design