Method to obtain male sterile plants
US6344602B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 10, 1999 |
| Grant date | Feb 5, 2002 |
| Priority date | — |
| Expiry date | Dec 10, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12N15/8289
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
A plant having in the nuclear genome of its cells foreign DNA comprising i) a male-sterility gene comprising a male-sterility DNA encoding a sterility RNA, protein or polypeptide which, when produced or overproduced in a stamen cell of the plant, significantly disturbs the metabolism, functioning and/or development of the stamen cell, and, a sterility promoter directing expression of the male-sterility DNA selectively in specific stamen cells of said plant, the male-sterility DNA being in the same transcriptional unit as, and under the control of, the sterility promoter, and ii) a coregulating gene comprising a coregulating DNA encoding a coregulating RNA, protein or polypeptide which, when produced in plant cells wherein said sterility RNA, protein or polypeptide is produced, prevents the activity of said sterility RNA, protein or polypeptide, and a coregulating promoter which is selected from the group consisting of a promoter directing expression of said coregulating DNA in non-stamen cells of said plant, while directing low-level expression in said specific stamen cells; and a promoter comprising a minimal promoter element, whereby said coregulating DNA is in a transcriptional …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.