Method of decreasing liquiritigenin-derived isoflavones relative to total isoflavones in plants and plants producing reduced ratio of liquiritigenin-derived isoflavones relative to total isoflavones
US7323621B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 11, 2003 |
| Grant date | Jan 29, 2008 |
| Priority date | — |
| Expiry date | Jul 2, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12N15/825
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
This invention pertains to methods for decreasing the ratio of liquiritigenin-derived isoflavones relative to total isoflavone levels in isoflavonoid-producing plants and plant parts by transforming plants with a recombinant DNA construct comprising a nucleic acid sequence of at least 200 nucleotides and having at least 75% sequence identity to a polynucleotide encoding a chalcone reductase. More preferably, this invention pertains to methods for decreasing the ratios of daidzein and glycitein and their conjugates relative to total isoflavone levels in soybean plants and soybean plant parts by transforming plants with a recombinant DNA construct comprising a nucleic acid sequence of at least 200 nucleotides and having at least 75% sequence identity to a polynucleotide encoding a chalcone reductase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.