摘要:
The invention provides cereal plants having a high level of fructan useful for the production of a range of food, beverage, nutraceutical and pharmaceutical products. The invention provides methods of producing high-fructan products from plants modified to comprise a reduced level of an endogenous polypeptide with starch synthase activity, and products so produced. In some embodiments, plants are modified by introduction of an agent such as a nucleic acid molecule which down regulates endogenous starch synthase II gene expression.
摘要:
The invention provides cereal plants having a high level of fructan useful for the production of a range of food, beverage, nutraceutical and pharmaceutical products. The invention provides methods of producing high-fructan products from plants modified to comprise a reduced level of an endogenous polypeptide with starch synthase activity, and products so produced. In some embodiments, plants are modified by introduction of an agent such as a nucleic acid molecule which down regulates endogenous starch synthase II gene expression.
摘要:
The specification provides methods of obtaining a genetically modified plant which has increased production potential compared to a control plant, the method comprising the steps of i) obtaining a plurality of plants at least one of which comprises in its genome a heterologous polynucleotide, ii) identifying from the plurality of plants a plant which has increased production potential relative to the control plant and comprises the heterologous polynucleotide, and iii) selecting the genetically modified plant, wherein the polynucleotide comprises a transcriptional control sequence operably linked to a nucleic acid sequence which encodes an agent that modifies endogenous starch phosphorylation and/or starch degradation in the plant. In some embodiments, the plant has increased endogenous glycosylase or increased digestibility compared to a control plant. In some specific embodiments, the endogenous starch phosphorylation and/or starch degradation is modified by modifying expression or activity of one or more enzymes selected from the group consisting of α-amylase (EC 3.2.1.1), β-amylase (EC 3.2.1.2), glucoamylase (EC 3.2.1.3), starch phosphorylase (EC2.4.1.1), glycosylase (EC 3.1.33), sucrase-isomaltase (EC 3.2.10), amylomaltase (EC 2.4.1.25), maltase (EC 3.2.1.20), isoamylase, and α-glucan, water dikinase (GWD, EC 2.7.9.4).
摘要:
The present invention relates to rice oil, rice bran and rice seeds which have altered levels of oleic acid, palmitic acid and/or linoleic acid. The present invention also provides methods for genetically modifying rice plants such that rice oil, rice bran and rice seeds produced therefrom have altered levels of oleic acid, palmitic acid and/or linoleic acid. Specifically this is achieved through modulation of Fad2 and/or FatB expression.
摘要:
The present invention relates to methods of preparing food using rice oil which has increased levels of oleic acid and decreased palmitic and linoleic acids, for increased stability to oxidation and health benefits.
摘要:
Rice having reduced levels of starch branching enzymes produce grain having a high relative amylose content in the endosperm. The rice grain of this invention can be of a non-shrunken phenotype despite a lesion in the amylopectin synthesis pathway and may be transgenic or nontransgenic.
摘要:
The present invention relates to methods of preparing food using rice oil which has increased levels of oleic acid and decreased palmitic and linoleic acids, for increased stability to oxidation and health benefits.
摘要:
The present invention relates to rice oil, rice bran and rice seeds which have altered levels of oleic acid, palmitic acid and/or linoleic acid. The present invention also provides methods for genetically modifying rice plants such that rice oil, rice bran and rice seeds produced therefrom have altered levels of oleic acid, palmitic acid and/or linoleic acid. Specifically this is achieved through modulation of Fad2 and/or FatB expression.
摘要:
The present invention provides isolated nucleic acid molecules encoding wheat starch syntheses, and probes and primers derived therefrom, which are useful in the modificaiton of plant starch content and/or composition, and for screening plant lines to determine the presence of natural and/or induced mutations in starch synthase genes which affect starch content and/or composition. More particularly the isolated nucleic acid molecules of the present invention further provide for the screening-assisted breeding of plants having desirable starch content and/or composition, in addition to providing for the direct genetic manipulation of plant starch content and/or composition.
摘要:
The present invention relates to a nucleic acid sequence encoding an enzyme of the starch biosynthetic pathway in a cereal plant, wherein the enzyme is selected from the group consisting of starch branching enzyme I, starch branching enzyme II, starch soluble synthase I, and debranching enzyme, with the provisio that the enzyme is not soluble starch synthase I of rice, or starch branching enzyme I of rice or maize.