Calgene Corporation

Other

Monsanto Technology LLC

Monsanto Company

Gregory A Thompson

Vic C Knauf

Deborah J Hawkins

Kathryn Dennis Lardizabal

Katayoon Dehesh

Huw Maelor Davies

Toni Alois Voelker

Hue Maelor Davies

Deborah Hawkins

The invention provides diacylglycerol acyltransferase (DAGAT) proteins, wherein said proteins are active in the formation of triacylglycerol from fatty acyl and diacylglycerol substrates. In one aspect,DAGAT proteins have been isolated and have molecular weights of between approximately 36 and 37 kDa as measured by SDS-PAGE. The invention also provides novel DAGAT polynucleotide and polypeptide sequences and to methods of producing such polypeptides using recombinant techniques. In addition, methods are provided for using such sequences to alter triacylglycerol levels in plants and to treat diseases associated with altered DAGAT activity or expression.

Diacylglycerol acyl transferase proteins

By this invention, compositions and methods of use of plant desaturase enzymes, especially &#x394;-9 desaturases, are provided. Of special interest are methods and compositions of amino acids and nucleic acid sequences related to biologically active plant desaturases as well as sequences, especially nucleic acid sequences, which are to be used as probes, vectors for transformation or cloning intermediates. Biologically active sequences may be found in a sense or anti-sense orientation as to transcriptional regulatory regions found in various constructs.

Plant desaturases&#x2014;compositions and uses

By this invention, methods to produce oleic fatty acids in plant seed oils are provided. The methods of the present invention generally involve the suppression of a host plant cells endogenous &#x3b2;-ketoacyl-ACP synthase I protein. Also described in the instant invention are the plants, cells and oils obtained therefrom.

Plant oils with altered oleic acid content

The invention provides diacylglycerol acyltransferase (DAGAT) proteins, wherein said proteins are active in the formation of triacylglycerol from fatty acyl and diacylglycerol substrates. In one aspect,DAGAT proteins have been isolated and have molecular weights of between approximately 36 and 37 kDa as measured by SDS-PAGE. The invention also provides novel DAGAT polynucleotide and polypeptide sequences and to methods of producing such polypeptides using recombinannt techniques. In addition, methods are provided for using such sequences to alter triacylglycerol levels in plants and to treat diseases associated with altered DAGAT activity or expression.

By this invention, modification of the fatty acid composition of a plant seed may be achieved as a result of the activity of a DNA sequence foreign to the plant species to be modified. In particular, it has been found that a plant oil having a modified fatty acid composition can be obtained upon the expression of genes derived from plants of different species than the host plant, upon the expression of genes derived from bacteria, and from the transcription of anti-sense sequences which are complementary to endogenous genes of the plant host cell. In a preferred embodiment, transcription of the fatty acid modifying foreign DNA sequence is restricted to the developing seed tissues.

Plant seed oils

Plant desaturases compositions and uses

The invention provides diacylglycerol acyltransferase (DAGAT) proteins, wherein said proteins are active in the formation of triacylglycerol from fatty acyl and diacylglycerol substrates. In one aspect, DAGAT proteins have been isolated and have molecular weights of between approximately 36 and 37 kDa as measured by SDS-PAGE. The invention also provides novel DAGAT polynucleotide and polypeptide sequences and to methods of producing such polypeptides using recombinant techniques. In addition, methods are provided for using such sequences to alter triacylglycerol levels in plants and to treat diseases associated with altered DAGAT activity or expression.

By this invention, methods to produce oleic fatty acids in plant seed oils are provided. The methods of the present invention generally involve the suppression of a host plant cells endogenous &bgr;-ketoacyl-ACP synthase I protein. Also described in the instant invention are the plants, cells and oils obtained therefrom.

Methods for producing plants with elevated oleic acid content

By this invention, compositions and methods of use of cDNAs encoding &bgr;-ketoacyl-ACP synthase, are provided. Also of interest are plants, plant parts and plant cells comprising the nucleic acid sequences.

Ricinus communis &bgr;-ketoacyl-ACP synthase nucleic acids

The present invention relates to DNA constructs comprising a plant stearoyl-ACP desaturase and a second DNA sequence which is not naturally joined to the given plant stearoyl-ACP desaturase. The plant stearoyl-ACP desaturase is under the regulatory control of a transcription and translation initiation region preferentially expressed in plant embryo tissue. The amino acid sequence and methods to purify safflower stearoyl-ACP desaturase to homogenity are also provided.

Plant stearoyl-ACP desaturases genes

This invention relates to plant thioesterases, means to identify such proteins, amino acid and nucleic acid sequences associated with such protein, methods to obtain, make and/or use such plant thioesterases. Also, by this invention, the existence of a heretofore unproven factor critical to the biosynthesis of medium-chain fatty acids in plants is demonstrated.

Plant C18:1 preferring thioesterases

By this invention, compositions and methods of use of plant desaturase enzymes, especially .DELTA.-9 desaturases, are provided. Of special interest are methods and compositions of amino acids and nucleic acid sequences related to biologically active plant desaturases as well as sequences, especially nucleic acid sequences, which are to be used as probes, vectors for transformation or cloning intermediates. Biologically active sequences may be found in a sense or anti-sense orientation as to transcriptional regulatory regions found in various constructs.

Plant desaturases--compositions and uses

Plant fatty acid synthases

By this invention, compositions and methods of use related to .beta.-ketoacyl-ACP synthase, hereinafter also referred to as 'synthase', are provided. Also of interest are methods and compositions of amino acid and nucleic acid sequences related to biologically active plant synthase(s). In particular, synthase protein preparations which have relatively high turnover (specific activity) are of interest for use in a variety of applications, in vitro and in vivo. Especially, protein preparations having synthase I and/or synthase II activities are contemplated hereunder. Synthase activities are distinguished by the preferential activity towards longer and shorter acyl-ACPs. Protein preparations having preferential activity towards shorter chain length acyl-ACPs are synthase I-type. Synthases having preferential activity towards longer chain length acyl-ACPs are synthase II-type. Of special interest are synthases obtainable from Ricinus communis.

Growing community of inventors

Clarkston, WA, United States of America

Gregory A Thompson