Process for the production of transgenic plants having high and starch yield and biomass.

摘要

Process for the production of transgenic plants that have high content and yield of starch and biomass. The starch synthases (SSs) in plants (including SSIV) and glycogen synthase (GlgA) in bacteria catalyse the transfer of the glucosidic part of the ADP-Glucose molecule (the activated donor of glucose) to a pre-existing ±(1, 4)-glucan. However, in contrast to the other SSs, SSIV is able to add glucose units to maltotriose. Also, in contrast to other soluble SSs, SSIV is bound to the starch granule. This invention describes for the first time how to obtain plants that have high levels and yields of starch and biomass as a consequence of the expression of genes coding for SSIV.