摘要:
Compositions and methods for regulating expression of nucleotide sequences of interest in a plant are provided. Compositions include novel nucleic acid molecules, and variants and fragments thereof, for promoter sequences isolated from the maize Ovule Development Protein 2 (ODP2) gene. A method for expressing a nucleotide sequence of interest in a plant using the promoter sequences disclosed herein is further provided. The method comprises introducing into a plant or plant cell an expression cassette comprising an ODP2 promoter of the present invention operably linked to a nucleotide sequence of interest. In particular, the compositions and methods find use in regulating expression of nucleotide sequences of interest in a seed-preferred manner. Transformed plants, plant cells, and seeds comprising the ODP2 promoter sequence or variants and fragments thereof are also provided.
摘要:
The present invention provides compositions and methods for regulating expression of isolated nucleotide sequences in a plant. The compositions are novel nucleic acid sequences for callus-tissue and seed embryo-preferred regulatory sequences. Methods for expressing an isolated nucleotide sequence in a plant or callus tissue using the regulatory sequences are also provided. The methods comprise transforming a plant cell to contain an isolated nucleotide sequence operably linked to the regulatory sequences of the present invention and regenerating a stably transformed plant or callus tissue from the transformed plant cell.
摘要:
This invention relates to isolated polynucleotides encoding WUS polypeptides. The invention further provides isolated WUS polypeptides. The invention also provides methods of using the polynucleotides to modulate the level of WUS, improve transformation efficiency, to stimulate plant cell growth, including stem cells, to stimulate organogenesis, to stimulate somatic embryogenesis, to induce apomixis, and to provide a positive selection for cells comprising the polynucleotide. The invention also relates to cells, plants and seeds comprising the polynucleotides of the invention or produced by the methods of the invention.
摘要:
The present invention relates to compositions and methods for identifying transformed cells. The method comprises introducing a visual marker polynucleotide into a plant cell and providing a growth stimulation protein. The compositions comprise a visual marker polynucleotide and a growth stimulation polynucleotide. Also provided are expression cassettes, plant cells, plant parts, and plants comprising same.
摘要:
The invention relates to the use of a modified Agrobacterium to deliver proteins directly to plant cells. Proteins of interest are delivered to the plant host in the form of a fusion protein with the Agrobacterium virulence protein VirF. Nucleotide sequences encoding such fusion proteins of VirF and a protein of interest are provided. Also provided are bacteria modified to comprise such fusion proteins of VirF and a protein of interest. Methods of introducing such fusion proteins into a plant host are provided. The invention finds use in facilitating plant transformation and particularly in the bio-engineering of desirable traits into crop plants.
摘要:
The invention provides isolated nucleic acids and their encoded proteins that are involved in cell cycle regulation. The invention further provides recombinant expression cassettes, host cells, transgenic plants, and antibody compositions. The present invention provides methods and compositions relating to altering cell cycle protein content, cell cycle progression, cell number and/or composition of plants.
摘要:
The invention provides isolated nucleic acids and their encoded proteins which act as transcriptional activators and methods of use thereof. The invention further provides expression cassettes, transformed host cells, transgenic plants and plant parts, and antibody compositions.
摘要:
The invention provides isolated nucleic acids and their encoded proteins that are involved in cell cycle regulation. The invention further provides recombinant expression cassettes, host cells, transgenic plants, and antibody compositions. The present invention provides methods and compositions relating to altering cell cycle protein content, cell cycle progression, cell number and/or composition of plants.
摘要:
This invention relates to an isolated nucleic acid fragment encoding a cyclin protein. The invention also relates to the construction of a chimeric gene encoding all or a portion of the cyclin protein, in sense or antisense orientation, wherein expression of the chimeric gene results in production of altered levels of the cyclin protein in a transformed host cell.
摘要:
The invention provides isolated Rb3 nucleic acids and their encoded proteins that are involved in cell cycle regulation. The invention further provides recombinant expression cassettes, host cells, transgenic plants, and antibody compositions. The present invention provides methods and compositions relating to altering cell cycle protein content, cell cycle progression, cell number and/or composition of plants.