Methods for controlling gibberellin levels
US6723897B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 1999 |
| Grant date | Apr 20, 2004 |
| Priority date | — |
| Expiry date | Aug 10, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12N15/8297
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
Methods and materials are disclosed for the inhibition and control of gibberellic acid levels. In particular, nucleic acid sequences of copalyl diphosphate synthase, 3-&bgr; hydroxylase, and 2-oxidase and additional nucleic acid sequences are disclosed. Gibberellic acid levels may be inhibited or controlled by preparation of a chimeric expression construct capable of expressing antisense RNA which suppresses the gibberellin biosynthetic pathway sequence. The antisense sequence is the complement of a copalyl diphosphate synthase sequence, a 3&bgr;-hydroxylase sequence, or a C20-oxidase sequence. Administration of a complementing agent, preferably a gibberellin or gibberellin precursor or intermediate restores bioactivity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.