摘要:
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.
摘要:
This invention pertains to methods of increasing isoflavonoid production in isoflavonoid-producing plants by transforming plants with at least one construct expressing at least a portion of a flavanone 3-hydroxylase, a C1 myb transcription factor, and an R-type myc transcription factor that regulate expression of genes in the phenylpropanoid pathway.
摘要:
This invention relates to an isolated nucleic acid fragment encoding an oxidosqualene cyclase. The invention also relates to the construction of a chimeric gene encoding all or a portion of the isolated polynucleotides of the invention, in sense or antisense orientation, operably linked to a suitable regulatory sequence.
摘要:
This invention relates to an isolated nucleic acid fragment encoding an oxidosqualene cyclase. The invention also relates to the construction of a chimeric gene encoding all or a portion of the isolated polynucleotides of the invention, in sense or antisense orientation, operably linked to a suitable regulatory sequence.
摘要:
This invention relates to an isolated nucleic acid sequence encoding isoflavone synthase. The invention also relates to the construction of chimeric sequences encoding all or a substantial portion of the enzymes, in sense or antisense orientation, wherein expression of the chimeric sequence results in production of altered levels of the enzyme in a transformed host cell.
摘要:
The present invention concerns a transgenic soybean plant producing seed having reduced activity of seed lipoxygenases, when compared to a soybean plant expressing wild type activity of native seed lipoxygenases, the transgenic soybean plant having a nucleic acid fragment from at least a portion of at least one soybean seed lipoxygenase gene, wherein the nucleic acid fragment is capable of suppressing expression of native seed lipoxygenases and has been introduced into the soybean plant by transformation. The present invention also concerns a transgenic soybean plant producing seed having reduced activity of seed lipoxygenases and a second native enzyme, when compared to a soybean plant expressing wild type activity of native seed lipoxygenases and the second native enzyme, the transgenic soybean plant having a first nucleic acid fragment from at least a portion of at least one soybean seed lipoxygenase gene, wherein the first nucleic acid fragment is capable of suppressing expression of said native seed lipoxygenases, and a second nucleic acid fragment from at least a portion of at least one second native enzyme gene, wherein the second nucleic acid fragment is capable of suppressing expression of the native second enzyme, wherein the first nucleic acid fragment and the second nucleic acid fragment have been introduced into the soybean plant by transformation, and wherein the second enzyme is selected from the group consisting of an enzyme of the lipid oxidation pathway, fatty acid desaturation pathway, phenylpropanoid pathway, triterpenoid pathway, and combinations thereof. Methods of suppressing wild type activity of native soybean seed lipoxygenases, alone or in combination with suppression of a second native enzyme are also embodied by the present invention.
摘要:
Recombinant constructs for reducing flavonol levels in a flavonol-producing plants are described. Such constructs comprise a promoter operably linked to a stem-loop structure wherein a nucleic acid sequence of at least 200 nucleotides and having at least 75% sequence identity to SEQ ID NO:4 forms part of loop part of the structure. Methods for reducing flavonol levels are also described.
摘要翻译:描述了用于在黄酮醇生产植物中降低黄酮醇水平的重组构建体。 这样的构建体包括可操作地连接到茎 - 环结构的启动子,其中至少200个核苷酸并且与SEQ ID NO:4具有至少75%的序列同一性的核酸序列形成结构的环部分的一部分。 还描述了降低黄酮醇水平的方法。