60 results about "Plant genomics" patented technology

Transient gene expression is a powerful tool for plant genomics studies. Recently, the use of nanomaterials has drawn great interest. Delivery with mesoporous silica nanoparticles (MSNs) has many advantages. We used surface-functionalized MSNs to deliver and express foreign DNA in Arabidopsis thaliana root cells without the aid of particle bombardment. Gene expression was detected in the epidermis layer and in the more inner cortex and endodermis root tissues. This method is superior to the conventional gene-gun method to deliver DNA, which delivers the gene to the epidermis layer only. Less DNA is needed for the MSN method. Our system is the first use of nanoparticles to deliver DNA to plants with good efficiency and without external aids. MSNs, with multifunctionality and the capability of cargo delivery to plant cells as we demonstrated, provide a versatile system for biomolecule delivery, organelle targeting, and even agriculture, such as improved nutrient uptake.

This invention relates to glyphosate-resistant transgenic plants and methods of making the same. In a preferred embodiment, a DNA fragment which comprises an EPSPS 5′ regulatory sequence and a glyphosate-resistant EPSPS coding sequence is introduced into regenerable plant cells. The encoded EPSPS has a chloroplast transit peptide. The DNA fragment does not contain a non-EPSPS enhancer. Cells are selected for stable transformation, and the selected cells can be used to regenerate glyphosate-resistant transgenic plants. The DNA fragment used for transformation preferably comprises a modified plant genomic sequence, such as SEQ ID NO: 2, SEQ ID NO:4 or SEQ ID NO: 6. In one embodiment, two DNA fragments of this invention are stably transformed into a plant to confer glyphosate-resistance.

Expressed Sequence Tags (ESTs) isolated from maize are disclosed. The ESTs provide a unique molecular tool for the targeting and isolation of novel genes for plant protection and improvement. The disclosed ESTs have utility in the development of new strategies for understanding critical plant developmental and metabolic pathways. The disclosed ESTs have particular utility in isolating genes and promoters, identifying and mapping the genes involved in developmental and metabolic pathways, and determining gene function. Sequence homology analyses using the ESTs provided in the present invention, will result in more efficient gene screening for desirable agronomic traits. An expanding database of these select pieces of the plant genomics puzzle will quickly expand the knowledge necessary for subsequent functional validation, a key limitation in current plant biotechnology efforts.

Expressed Sequence Tags (ESTs) isolated from cotton are disclosed. The ESTs provide a unique molecular tool for the targeting and isolation of novel genes for plant protection and improvement. The disclosed ESTs have utility in the development of new strategies for understanding critical plant developmental and metabolic pathways. The disclosed ESTs have particular utility in isolating genes and promoters, identifying and mapping the genes involved in developmental and metabolic pathways, and determining gene function. Sequence homology analyses using the ESTs provided in the present invention, will result in more efficient gene screening for desirable agronomic traits. An expanding database of these select pieces of the plant genomics puzzle will quickly expand the knowledge necessary for subsequent functional validation, a key limitation in current plant biotechnology efforts.

Expressed Sequence Tags (ESTs) isolated from soybean are disclosed. The ESTs provide a unique molecular tool for the targeting and isolation of novel genes for plant protection and improvement. The disclosed ESTs have utility in the development of new strategies for understanding critical plant developmental and metabolic pathways. The disclosed ESTs have particular utility in isolating genes and promoters, identifying and mapping the genes involved in developmental and metabolic pathways, and determining gene function. Sequence homology analyses using the ESTs provided in the present invention, will result in more efficient gene screening for desirable agronomic traits. An expanding database of these select pieces of the plant genomics puzzle will quickly expand the knowledge necessary for subsequent functional validation, a key limitation in current plant biotechnology efforts.

Expressed Sequence Tags (ESTs) isolated from soybean are disclosed. The ESTs provide a unique molecular tool for the targeting and isolation of novel genes for plant protection and improvement. The disclosed ESTs have utility in the development of new strategies for understanding critical plant developmental and metabolic pathways. The disclosed ESTs have particular utility in isolating genes and promoters, identifying and mapping the genes involved in developmental and metabolic pathways, and determining gene function. Sequence homology analyses using the ESTs provided in the present invention, will result in more efficient gene screening for desirable agronomic traits. An expanding database of these select pieces of the plant genomics puzzle will quickly expand the knowledge necessary for subsequent functional validation, a key limitation in current plant biotechnology efforts.

The invention discloses a quick extraction method of plant genomic DNA (Deoxyribonucleic Acid). The quick extraction method is characterized by comprising the following steps of (1), taking a plant tissue sample, adding liquid nitrogen, grinding the plant tissue sample into powder and collecting into a centrifugal tube, and the like. SDS (Sodium Dodecyl Sulfonate) in a Buffer A in the quick extraction method can be used for cracking a cell membrane to denature protein; a Buffer B can act with the SDS; impurities of the protein, a polysaccharide and the like can be effectively removed; moreover, PVP40 (Polyvinyl Pyrrolidone 40) in the Buffer A can be used for effectively removing substances of the polysaccharide and polyphenol in plant tissue; the purity of the DNA is improved; the completeness of the DNA is enabled to be better; the quick extraction method can be directly used for a PCR (Polymerase Chain Reaction) and various enzyme digestion reaction; meanwhile, the quick extraction method does not need to use organic solvents of phenol chloroform and the like in the entire extraction process; therefore, steps of ethanol precipitation and the like do not need to be carried out; the extraction method provided by the invention, compared with a conventional extraction method, can be used for more quickly, simply and conveniently extracting the DNA; the operation, on a single sample, of the quick extraction method can be completed within 1 hour and the extraction time is greatly shortened.

Maize event HCEM485 is provided, in which plants comprising the event are tolerant to exposure to a glyphosate herbicide. Maize genomic polynucleotides flanking the insert DNA providing glyphosate tolerance are provided. The plant or part thereof having the event comprises a junction region of the insert DNA and maize plant genomic sequences. Methods and primers and probes to detect the presence of the event are provided, as well as kits which employ such primers and probes.

Expressed Sequence Tags (ESTs) isolated from soybean are disclosed. The ESTs provide a unique molecular tool for the targeting and isolation of novel genes for plant protection and improvement. The disclosed ESTs have utility in the development of new strategies for understanding critical plant developmental and metabolic pathways. The disclosed ESTs have particular utility in isolating genes and promoters, identifying and mapping the genes involved in developmental and metabolic pathways, and determining gene function. Sequence homology analyses using the ESTs provided in the present invention, will result in more efficient gene screening for desirable agronomic traits. An expanding database of these select pieces of the plant genomics puzzle will quickly expand the knowledge necessary for subsequent functional validation, a key limitation in current plant biotechnology efforts.

The current invention is a novel approach termed “parallel screening” which allows simultaneously screening of a population for insertions in all genes cloned from that or a closely related organism. In order to test this approach, the flowering plant Petunia hybrida was used as a model system. Petunia hybrida line W137 contains a high copy number of the endogenous transposable element dTph1 and has been previously presented as a genetic tool. A 3D library of the plant genomic DNA of 1000 Petunia hybrida W137 plants was generated. The 3D library consists of 30 pools of DNA from 100 plants each. These were used to generate 30 pools of insertion flanking sequences by nested iPCR using a set of transposon-specific primers or by Transposon Display PCR. Insertions into a gene were detected by hybridizing the amplified insertion flanking sequences fixed to a filter with a gene-specific probe, an approach termed simple screening for insertion elements. Alternatively, the amplified insertion element flanking sequences were labeled and used as a probe to hybridize a filter displaying multiple gene targets, an approach termed parallel screening for insertion elements, which allows the simultaneous screening for insertions in all genes of an organism, appearing in a population of insertion mutants.

Expressed Sequence Tags (ESTs) isolated from soybean are disclosed. The ESTs provide a unique molecular tool for the targeting and isolation of novel genes for plant protection and improvement The disclosed ESTs have utility in the development of new strategies for understanding critical plant developmental and metabolic pathways. The disclosed ESTs have particular utility in isolating genes and promoters, identifying and mapping the genes involved in developmental and metabolic pathways, and determining gene function. Sequence homology analyses using the ESTs provided m the present invention, will result in more efficient gene screening for desirable agronomic traits. An expanding database of these select pieces of the plant genomics puzzle will quickly expand the knowledge necessary for subsequent functional validation, a key limitation in current plant biotechnology efforts.

The present invention relates to the transformation of C4 plants. It also relates to the high-level expression of foreign genes in C4 plants. More specifically, the present invention relates to the creation of C4 plants retaining an excellent photosynthetic capacity at low temperature by achieving high-level expression of an enzyme constituting the C4 photosynthetic pathway. In the present invention, C4 plants are transformed using an expression cassette that comprises a promoter, a C4 plant genomic gene, under control of said promoter, encoding an enzyme constituting a photosynthetic pathway, and a terminator. The C4 plant genomic gene encoding an enzyme constituting a photosynthetic pathway is preferably a C4 plant genome-derived PPDK gene or a modified form thereof. The present invention is particularly useful in improving the production of C4 plants having PPDK (especially, in improving the production of maize under low temperature conditions).

A method for extracting total DNA from an agriophyllum squarrosum tissue includes the steps of kit equipment extraction pretreatment, extraction, and quality detection. According to the method, aiming at the defects of a conventional agriophyllum squarrosum DNA extraction technique, with combination of beta-mercaptoethanol and a commercial DNA extraction kit Plant Genomic DNA Kit of Tiangen biotech (Beijing) Co., Ltd., and through optimization tests, the method for extracting the total DNA with high quality, high yield and no protein and RNA pollution is developed for the agriophyllum squarrosum tissue; the method not only lays the foundation for development of agriophyllum squarrosum genome and mining of stress resistance resources, but also provides a model for extraction of high-quality whole genomic DNA of desert plants.