2.4.1.241 additional information a null-mutant of Arabidopsis, which lacks the DGDG synthase (DGD1) resulting in a 90% reduction in the amount of DGDG under normal growth conditions, accumulates digalactosyldiacylglycerol after phosphate deprivation up to 60% of the amount present in the wild-type. Extraplastidic biosynthesis of digalactosyldiacylglycerol induced by phosphate deprivation is a biochemical mechanism for plants to conserve phosphate Arabidopsis thaliana ? - 89 2.4.1.241 additional information DGD2 mRNA expression in leaves is very low but is strongly induced during growth under phosphate-limiting conditions Arabidopsis sp. ? - 89 2.4.1.241 additional information disruption of the two digalactosyldiacylglycerol synthase genes DGD1 and DGD2 in Arabidopsis reveals the existence of an additional enzyme of galactolipid synthesis Arabidopsis sp. ? - 89 2.4.1.241 UDP-alpha-D-galactose + 1,2-diacyl-3-O-(beta-D-galactosyl)-sn-glycerol - Arabidopsis thaliana UDP + 1,2-diacyl-3-O-[alpha-D-galactosyl-(1->6)-beta-D-galactosyl]-sn-glycerol - 457276 2.4.1.241 UDP-galactose + digalactosyldiacylglycerol - Arabidopsis sp. UDP + trigalactosyldiacylglycerol - 377966 2.4.1.241 UDP-galactose + monogalactosyldiacylglycerol - Arabidopsis sp. UDP + digalactosyldiacylglycerol - 375350 2.4.1.241 UDP-galactose + monogalactosyldiacylglycerol - Synechocystis sp. PCC 6803 UDP + digalactosyldiacylglycerol - 375350 2.4.1.241 UDP-galactose + monogalactosyldiacylglycerol - Vigna unguiculata UDP + digalactosyldiacylglycerol - 375350 2.4.1.241 UDP-galactose + monogalactosyldiacylglycerol - Xerophyta humilis UDP + digalactosyldiacylglycerol - 375350 2.4.1.241 UDP-galactose + monogalactosyldiacylglycerol DGD1 seems to act preferentially on monogalactosyldiacylglycerol molecular species with 18-carbon fatty acids in the two positions of monogalactosyldiacylglycerol in vivo Arabidopsis sp. UDP + digalactosyldiacylglycerol - 375350 2.4.1.241 UDP-galactose + monogalactosyldiacylglycerol DGD2 seems to act preferentially on monogalactosyldiacylglycerol molecular species with 16-carbon fatty acids in the sn-1 position and on 18-carbon fatty acid in the sn-2 position in vivo Arabidopsis sp. UDP + digalactosyldiacylglycerol - 375350