Plants synthesizing a modified starch, a process for the generation of the plants, their use, and the modified starch
AssigneeBayer CropScience AG
InventorVolker Landschütze
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Abstract
The present invention relates to recombinant nucleic acid molecules which contain two or more nucleotide sequences which encode enzymes which participate in the starch metabolism, methods for generating transgenic plant cells and plants which synthesize starch which is modified with regard to its phosphate content and its side-chain structure. The present invention furthermore relates to vectors and host cells which contain the nucleic acid molecules according to the invention, the plant cells and plants which originate from the methods according to the invention, to the starch synthesized by the plant cells and plants according to the invention, and to processes for the preparation of this starch.
Claims23
An isolated recombinant nucleic acid molecule comprising:
- (a) at least one fragment of a sequence encoding a potato soluble starch synthase III;
- and
- (b) at least one fragment of a sequence encoding a potato branching enzyme, wherein the fragments are at least 500 nucleotides in length, and wherein the nucleic acid molecule inhibits synthesis of endogenous soluble starch synthase III and endogenous branching enzyme when introduced into plants.
A method of generating a transgenic plant cell comprising simultaneously or subsequently integrating into the genome of said plant cell:
- (a) at least one fragment of a sequence encoding a potato soluble starch synthase III;
- and
- (b) at least one fragment of a sequence encoding a potato branching enzyme thereby inhibiting the synthesis of endogenous soluble starch synthase III and endogenous branching enzyme,
- wherein the plant cell is a potato plant cell, and
- wherein said fragments are at least 500 nucleotides in length.
Dependencies are inferred from the claim text.