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4-KETOCAROTENOIDS IN FLOWER PETALS, R Hauptmann, R Eisenreich, W Eschenfeldt & Z Khambatta (2003). Ball Horticultural Company, USA. Patent # WO03080849.
The formation of a carotenoid compound containing a 4-keto-beta-ionene ring such as astaxanthin or canthaxanthin in flowers, and particularly in the corolla and reproductive parts of a flower of a higher plant whose flowers produce a carotenoid compound containing a beta-ionene ring such as beta-carotene or zeaxanthin, but otherwise do not produce astaxanthin or canthaxanthin is disclosed. One or more genes controlled by a promoter are inserted (transformed) into a higher plant. The inserted gene encodes a chimeric enzyme including (a) a carotenoid-forming enzyme that is at least a ketolase. That gene is operatively linked to (b) a plastid-directed transit peptide. Some higher plants to be transformed produce at least zeaxanthin or beta-carotene in their flowers prior to transformation, whereas other plants produce little if any coloured carotenoid pigments prior to transformation and are transformed with a cassette of carotenoids-forming genes. Methods of transformation and use of the transformed plants are described. |
METHOD FOR PROMOTING FATTY ACID SYNTHESIS IN PLANT, S Sasaki, A Yokota & Y Tsubura Yuka (2002). NARA Institute of Science & Technology, Japan. Patent # JP2002335786.
The present invention provides a new method for promoting the synthesis of fatty acid in a plant. The amount of protein of carboxyl transferase & beta subunit encoded by accD gene is increased by introducing a promoter sequence of a gene highly expressed in chloroplast at the upstream of an E.coli-type acetyl CoA carboxylase accD gene by chloroplast transformation technique. The amount of protein of other subunit constituting acetyl CoA carboxylase is also increased by this process. Since acetyl CoA carboxylase is the key enzyme of the first stage of fatty acid synthesis, the synthesis of fatty acid can be promoted by the method of the present invention. The transformed vegetable produced by the method exhibits remarkable promotion of fatty acid synthesis, prolonged life of the leaf, increased yield of seeds and improved productivity of the plant body. |
PREPARING TRANSGENIC LEGUMINOUS PLANTS WITH INCREASED PROTEIN CONTENT, USEFUL E.G. AS FODDER, COMPRISES TRANSFORMATION WITH SPECIFIC GENES, DO NOT CONTAIN MARKER GENES, H Weber, I Saalbach, M Giersberg & P Hoffmeister (2001). Institut für Pflanzengenetik und Kulturpflanzenschung, Germany. Patent # WO0175128.
The invention relates to a method for the production of leguminous plants with increased protein content in the seeds and longer seed filling duration, by means of introduction of recombinant DNA molecules. Said recombinant DNA molecules are introduced into the plant, by means of a transformation system and comprise a DNA sequence from the plant, expressed in plants, the genetic product of which inhibits a protein in the seed with the enzymatic activity of an ADP glucose pyrophosphorylase (AGP) and/or a plastid phosphoglucomutase (pPGM) and, optionally, the regulatory sequence of a seed-specific promoter in leguminous plants. Furthermore, at least one selection marker gene is separately transferred, which is subsequently removed again. The plants which display an increased protein content and a lengthier seed-filling duration are chosen. |
PROCESS FOR THE PRODUCTION OF PLANTS WITH ENHANCED GROWTH CHARACTERISTICS, G Donn, P Eckes, H Muellner, G Dudits, K Paulovics & A Feher (1997). Hoechst Schering Agrevo GMBH, Germany. Patent # WO9738115.
Nitrogen often is the rate-limiting element in plant growth. Most field crops have a fundamental dependence on inorganic nitrogenous fertiliser. Mineral fertilisers are a major source for ground water pollution. Therefore it would be beneficial if plants could utilise the existing nitrogen more efficiently. Nitrogen is taken up by the plant as inorganic compounds, namely nitrate and ammonia. The majority of this nitrogen is assimilated into organic compounds like amino acids. Glutamine synthase plays a major role since it catalyses the assimilation of ammonia into glutamine. Glutamine, together with asparagines, are the main transport forms of nitrogen in plants. A process for the production of plants with improved growth characteristics by targeted expression of bacterial asparagines synthase in the chloroplasts or plastids, and plants therefrom, are disclosed and claimed, together with intermediates therefor. |
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