TRANSGENIC SOYBEAN SEEDS HAVING REDUCED ACTIVITY OF LIPOXYGENASES

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.