The 72 MtMST (regular font) were retrieved from the M. truncatula genome v4.0, 59 PsMST (bold font) from the pea Gene Atlas and 53 AtMST (grey font) from the Arabidopsis genome v11. MtMST and PsMST were named upon phylogenetic grouping into the seven MST clades: sugar transport protein (STP), polyol/monosaccharide transporter (PLT), inositol transporter (INT), vacuolar glucose transporter (VGT), tonoplast membrane transporter (TMT), pGlcT/SGB for plastidic glucose transporter (pGlcT) and suppressor of G Protein Beta1 (SGB1) and early-responsive to dehydration six-like (ESL). We then added a “.number” extension (eg. STP1.1 to STP1.8) to clearly identify gene accessions within subclades.