Patent ID: 8106256

Claim:
A genetically modified plant cell comprising (1) a foreign nucleic acid molecule coding for a hyaluronan synthase; (2) a foreign nucleic acid molecule coding for a protein having glutamine:fructose 6-phosphate amidotransferase-2 (GFAT-2) activity and originating from animals, or a foreign nucleic acid molecule coding for a protein having glutamine:fructose 6-phosphate amidotransferase (GFAT) activity and originating from bacteria; and (3) a foreign nucleic acid molecule coding for a protein having UDP-glucose dehydrogenase (UDP-Glc-DH) activity stably integrated into its genome, wherein said plant cell has an increased activity of a protein having the activity of a glutamine:fructose 6-phosphate amidotransferase-2 (GFAT-2) or a protein having the activity of a glutamine:fructose 6-phosphate amidotransferase (GFAT), and an increased activity of a protein having the activity of a UDP-glucose dehydrogenase (UDP-Glc-DH) compared to corresponding non genetically modified wild-type plant cells.