Interference 103,579
19. Potato plant whose genome comprises the antisense
construct as claimed in claim 8.
20. Potato tubers whose genome comprises the antisense
construct as claimed in claim 8.
21. A method for tuber-specific expression of a gene
product in potato, comprising transforming said potato with
a DNA molecule comprising an isolated promoter from the
potato gene coding for granule-bound starch synthase (GBSS).
22. Antisense construct as claimed in claim 7,
characterized in that the promoter has the sequence
stated in SEQ ID No. 4.
23. A method for tuber-specific expression of a gene
product in potato, comprising transforming said potato with
a DNA molecule comprising an isolated promotor [sic] from
the potato gene coding for granule-bound starch synthase
(GBSS), said promoter having the nucleotide sequence stated
in SEQ ID No. 4.
50. A method of suppressing amylose formation in potato,
wherein the potato is modified by genetic engineering,
which method comprises cultivating a potato containing
in the genome of a tissue of said potato a gene construct
comprising a fragment of the potato gene which codes for
formation of granule-bound starch synthase (GBSS gene)
inserted in the anti-sense direction, wherein said fragment
has the nucleotide sequence of SEQ ID No. 1.
Visser’s claims designated as corresponding to Count 2 are
reproduced below:
1. A transgenic potato plant which, as a result of genetic
engineering has a genome containing at least one gene
construct containing a full length potato granule-bound
starch synthase (PGBSS) cDNA or genomic DNA sequence
coding for PGBSS in reverse orientation in an expression
cassette which is functional in potato plants, said gene
construct giving rise to tubers containing essentially
amylose free starch; wherein said expression cassette
comprises in the 5'-3' direction of transcription: an
upstream promoter base sequence, a base sequence for
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