Rice plants and methods of producing rice grain
AssigneeCommonwealth Scientific and Industrial Research Organisation
InventorsElla Zaplin, Sadequr Rahman, Zhongyi Li, Qing Liu, Surinder Pal Singh, Robert Charles de Feyter
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Abstract
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.
Claims17
A rice plant comprising a transgene which encodes a polynucleotide that down-regulates the expression of a gene encoding a Fad2 polypeptide when compared to a corresponding non-modified rice plant, wherein the rice plant comprising the transgene produces rice oil, rice bran or rice seed having a fatty acid composition comprising greater than 60% w/w oleic acid, less than 15% w/w palmitic acid and less than 25% w/w linoleic acid.
A method of producing brown rice seed with an increased storage life, comprising the steps of
- i) obtaining a rice plant comprising a transgene which encodes a polynucleotide that down-regulates the expression of a gene encoding a Fad2 polypeptide when compared to a corresponding non-modified rice plant, wherein the rice plant comprising the transgene has a fatty acid composition in its seed comprising greater than 60% w/w oleic acid, less than 15% w/w palmitic acid and less than 25% w/w linoleic acid, and
- ii) harvesting the seed from the plant, thereby producing the brown rice seed with an increased storage life.
Dependencies are inferred from the claim text.