Extended Data Fig. 4: 15N isotope labelling of hydroponic culture for calculation of the contribution of biological N fixation to total N content in whole plants.
From: Genetically optimizing soybean nodulation improves yield and protein content
a, b Absolute isotopic 15N abundance (a) and atom % 15N (b) of HC-6 and ric1a/2a-1 plants grown with or without Rhizobia inoculation in a K15NO3-labelling assay (n ≥ 14). Mann-Whitney testing was performed. The central black lines in the dot plots represent the median.
