Transcriptomics profile of Medicago and pea SUT (top panel), MST (middle panel) and SWEET (bottom panel) from plant samples (leaf, shoot, stem, flower, seed and root); shoot and root supplemented with nitrogen (N+) or nitrogen limited (N-); roots inoculated with beneficial microorganisms like Rhizobia (at 4, 10, 28 days post inoculation), arbuscular mycorrhizal fungi (Rhizophagus irregularis: myc+Ri or Funneliformis mosseae: myc+Fm) and non-mycorrhizal root control (myc-). The heat map shows z-score normalized expression for genes/rows (green: low expression, red: high expression) and a hierarchical gene tree, highlighting coexpression clusters.