Genetically modified plants which synthesise a starch with low amylase content and higher swelling ability

摘要

Genetically modified monocot plant cells producing starch with an amylose content below 5 wt.% have increased starch synthase II and glucan-water dikinase activities compared with the wild type. Independent claims are also included for: (1) monocot plant comprising genetically modified cells as above; (2) propagation material of plants as above; (3) producing a genetically modified monocot plant by modifying a plant cell by introducing a genetic modifications that increase starch synthase II activity, increase glucan-water dikinase activity and reduce granule-bound starch synthase I activity; regenerating plants from the cell; and optionally using these plants to produce more plants; (4) producing modified starch by extracting starch from plant cells, plants or propagation material as above; (5) modified starch produced as above; (6) producing derivatized starch by derivatizing modified starch as above; (7) derivatized starch produced as above; (8) flour comprising modified starch as above; (9) products comprising starch or flour as above.