摘要:
In order to provide a vector and a method for introducing one copy of a desired gene to a predetermined position of a host DNA at a high frequency without any bad influences upon the host cell and a vector and a method for deleting or inverting a host DNA at a predetermined position without a crossing step and without any bad influences upon the host cell. A vector which has an introduction cassette inserted between two site-specific recombinase recognition sequences and a site-specific recombinase gene which recognizes these site-specific recombinase recognition sequences, wherein the recombinase gene is positioned outside the introduction cassette, is used, and this is introduced into a host cell having a DNA in which one or two site-specific recombinase recognition sequences are present. A recombinant of interest can be efficiently obtained by positioning a lethal induction gene or a morphological abnormality induction gene outside the introduction cassette, together with the site-specific recombinase gene.
摘要:
A method of producing a genetically engineered organism, by (a) incorporating into said organism a functional DNA sequence and (b) incorporating into said organism a non-functional DNA sequence, wherein said non-functional DNA sequence corresponds to the results of the application of a predefined coding scheme to an information message, said information message is related to said functional DNA sequence, said predefined coding scheme provides a mapping from a plurality of possible information messages into a plurality of DNA sequences. Said functional and said non-functional DNA sequence remain linked during reproduction of the organism for a practically relevant period of time.
摘要:
A method for producing a transgenic plant, which comprises: preparing a shoot having at least one end having a growing point and a base part having no growing point as a tissue for gene introduction; and introducing a desired gene into the base part while keeping the growing point in the at least one end to differentiate an adventitious bud.
摘要:
A vector for introducing a desired gene into a plant, which comprises the desired gene and at least one morphological abnormality induction (MAI) gene as a marker gene, or which comprises the desired gene, at least one MAI gene and a removable element. A method for producing a transgenic plant free from the influence of a marker gene. A method for multitudinously introducing desired genes into one plant.
摘要:
Plante portant dans son génomène un ou plusieurs gènes codant pour une ou plusieurs enzymes des étapes précoces de la voie de biosynthèse des phytostérols. Ces gènes peuvent coder pour une mévalonate kinase, une farnésyl diphosphate synthétase ou une mévalonyl 5-phosphate kinase et peuvent être les gènes ERG12, ERG20 et ERG8. Les plantes dans lesquelles ces gènes sont insérés de manière stable présentent de nombreux avantages tels qu'un développement plus important et une amélioration de leur productivité et de leur capacité à régénérer.
摘要:
A virus-resistant tobacco in accordance with the present invention is such that it includes a mutation in a translation initiation factor eIF(iso)4E gene, the mutation causing production of an eIF(iso)4E protein which is non-functional with respect to a virus or suppressing expression of the eIF(iso)4E gene, or a virus-resistant tobacco in accordance with the present invention is such that an expression level of the eIF(iso)4E gene is 20% or lower as compared to a wild type.
摘要:
The present invention provides transgenic plants resistant to bio-herbicides, particularly to phytotoxic non-protein amino acids including the meta-tyrosine (m-tyrosine) amino acid analog and salts thereof. The invention further provides means and methods for producing the transgenic plants.
摘要:
A method for the transformation of sugar beet protoplasts includes obtaining protoplasts from stomatal guard cells isolated from a sugar beet plant. The protoplasts are transformed with a nucleic acid construct including a nucleotide sequence of interest and a selection marker sequence. One or more ALS inhibitors at a concentration that is lethal to the in vitro culture of the protoplasts are applied to an in vitro culture of the protoplasts. Sugar beet plants are regenerated from the surviving protoplasts having integrated the nucleic acid construct including the sequence of interest and the selection marker sequence. The selection marker sequence is the mutated BvALS113 sequence carrying in its sequence a mutation at amino acid 113 position from Alanine to Tyrosine.
摘要:
Methods of, and compositions for, assembling one or more transcription units in a genome without a linked selectable marker or other unwanted transcription unit are provided. Also provided methods of, and compositions for, assembling one or more transcription units in a genome with a reduced frequency of vector backbone.