| 摘要 |
The invention relates to transgenic expression cassettes for the expression of two nucleic acid sequences in a plant cell. Said cassettes comprise at least one regulatory sequence selected from the group consisting of: a) the promot er in SEQ ID NO: 1 or 2, b) functional equivalents of the promoter in SEQ ID NO : 1 or 2, which are at least 80 % homologous with the sequence in SEQ ID NO: 1 or 2 and exhibit essentially the same promoter activity as the promoter in S EQ ID NO: 1 or 2, c) functional equivalents of the promoter in SEQ ID NO: 1 or 2, which comprise at least 25 successive nucleotides of the sequences in SEQ ID NO: 1 or 2 and exhibit essentially the same promoter activity as the promote r in SEQ ID NO: 1 or 2, and d) functionally equivalent fragments of the sequences a) or b) or c), which comprise at least (25) successive nucleotide s of said sequences a) or b) or c) and exhibit essentially the same promoter activity as the promoter in SEQ ID NO: 1 or 2. Said regulatory element is positioned between two nucleic acid sequences, is heterogeneous in relation to said nucleic acid sequences and is functionally linked to said nucleic acid sequences in such a way that in at least one plant cell two different ribonucleic acid sequences are expressed, said ribonucleic acid sequences being selected from ribonucleic acid sequences that code for i) amino acid sequences or ii) ribonucleic acid sequences, which reduce the expression of at least one endogenous gene of said plant cell.
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