“…Using this PSPG motif as a search tool, 107 putative UGT genes were identified in the Arabidopsis thaliana genome [ 17 ]. Subsequently, putative UGT genes have been identified in other plants, including Prunus persica (168 genes), Malus domestica (254), Vitis vinifera (184), Linum usitatissimum (138), Glycine max (148), Zea mays (148), Glycine soja (128), Gossypium hirsutum (274), Eucommia ulmoides (91), Apple (237), Quercus robur (244), Vitis vinifera (257), Oryza sativa (41) Camellia sinensis and Triticum aestivum (179) [ 12 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 ]. A 40% amino acid similarity can be found among the UGTs, whereas 60% or greater similarity has been observed within subfamilies [ 13 , 30 , 31 , 32 ].…”