摘要:
The invention provides methods and compositions for identifying transgenic seed that contain a transgene of interest, but lack a marker gene. Use of an identification sequence that results in a detectable phenotype increases the efficiency of screening for seed and plants in which transgene sequences not linked to a gene of interest have segregated from the sequence encoding a gene of interest.
摘要:
Provided in the present invention is a method for preparing hybrid rice, comprising the reproduction and maintenance of the female sterility line and the use thereof in preparing hybrid rice.
摘要:
A method of producing male or female sterile plants comprising the steps of transforming plant material with a polynucleotide which encodes at least one enzyme which reacts with a non-phytotoxic substance to produce a phytotoxic one, and regenerating the thus transformed material into a plant, wherein the said non-phytotoxic substance is applied to the plant up to the time of male or female gamete formation and/or maturation, so that the non-phytotoxic substance provides for the production of a phytotoxic one which selectively prevents the formation of or otherwise renders the said gametes non-functional, wherein the enzyme is expressed preferentially in either male or female reproductive structures, characterised in that (i) the non-phytotoxic substance is D-phosphinothricin and (ii) the enzyme is a D-amino acid oxidase.
摘要:
Plants having modulated expression of a HAF or BEE polypeptide and which modulate aspects of plant fertility, such as parthenocarpy, fertilization efficiency, and/or fruit size, are described. Methods of modulating fertility characteristics in a plant by modulating the expression of a HAF or BEE polypeptide in the plant are also described.
摘要:
The present invention relates to the regulation of reproductive development, particularly to the genetic ablation of reproductive tissues in angiosperm and gymnosperm species. Reproductive-preferred promoters, regulatory elements, and cytotoxic nucleotide sequences are disclosed herein, as are constructs and methods for genetic ablation.
摘要:
Methods are provided in which a promoter hairpin construct is introduced into a cell to suppress expression of a gene of interest; a change in phenotype of the cell, or of an organism regenerated from the cell, is detected; and the change in phenotype identifies the function of a product of the gene of interest. Also provided are methods for restoring the original phenotype.
摘要:
The present invention relates to isolated nucleotide sequences useful for the production of plants with a modified embryo sac, embryo and or endosperm development, and to transgenic cells and plants transformed with the nucleotide sequences.
摘要:
Broad experimental tools that include biochemical molecular developmental global genomics and loss and gain of function transgenic approaches have been applied to address target of rapamycin (TOR) signaling pathway in plants especially using Arabidopsis model system and Brassica napus crop Towards this objective, putative TOR interacting proteins (TIPs) have been identified and functions of these implicated in diverse developmental and biochemical processes have been investigated Functional studies including over-expression and silencing of TIPs have shown a range of phenotypes that include nutrition-use-efficiency, altered plant architecture and stress resistance in transgenic Arabidopsis and Brassica lines Some of these phenotypes are relevant to important developmental pathways implicated in canola crop yield and performance
摘要:
A promoter isolated from Zea mays, designated the P67 promoter, provides a high level of specificity for expression in developing pollen, particularly at the mid-uninucleate stage, as confirmed by RT-PCR and Northern blot analyses of RNA samples from various tissues. Compositions and methods of use of the P67 promoter are disclosed.
摘要:
The present invention relates to the regulation of reproductive development, particularly to the genetic ablation of reproductive tissues in angiosperm and gymnosperm species. Reproductive-preferred promoters, regulatory elements, and cytotoxic nucleotide sequences are disclosed herein, as are constructs and methods for genetic ablation.