Patent ID: 7449623

Claim:
An isolated nucleic acid molecule comprising a promoter operably linked to a nucleic acid in antisense orientation thereto, wherein the nucleic acid comprises (a) nucleotides 2 to 4372 of SEQ ID NO: 1; (b) the coding region of the cDNA insert of plasmid pOs R1, a sample of which has been deposited as DSMZ deposit accession number DSM 12439; or (c) a nucleic acid sequence that is at least 95% identical to the nucleic acid sequence of nucleotides 2 to 4372 of SEQ ID NO: 1 or the coding region of the cDNA insert of plasmid pOs R1, a sample of which has been deposited as DSMZ deposit accession number DSM 12439; wherein the nucleic acid sequence is sufficient to reduce the expression of a gene encoding an R1 protein in a rice cell when introduced in antisense orientation with respect to the promoter.