Table 1. Gene duplication and gene loss in gene families involved in sugar metabolism and transport in both grasses and dicots.

Species	Duplication type	Genes
Grass-specific	Old gene duplication	SPS(2), HK(5), NI(3), SUSY(3), PMT(1), STP(4), SUT(3), TMT(2), ERD6-like(2), INT(1)
	Recent gene duplication	SPS(3), HK(4), NI(3), SUSY(3), TMT(2), STP(2)
	Old gene loss	SUT
	Recent gene loss	HK, NI, SUSY, STP, TMT, ERD6-like,INT, pGlcT, SUT, PMT
Eudicot-specific	Old gene duplication	SPS(1), HK(1), SUSY(1), STP(1), TMT(1),
	Recent gene duplication	SPS(5), HK(10), NI(7), SUSY(9), PMT(15), STP(34), SUT(18), TMT(9), VGT(4), ERD6-like(16), INT(12), pGlcT(5)
	Old gene loss	N/D
	Recent gene loss	HK, SUSY, PMT, STP SUT, NI, SPS, ERD6-like, pGlcT, TMT