31 results about "Antiporters" patented technology

The present invention provides novel polynucleotides encoding plant Na+ / H+ antiporter polypeptides, fragments and homologs thereof. Also provided are vectors, host cells, antibodies, and recombinant methods for producing said polypeptides. The invention further relates to methods of applying these novel plants polypeptides to the identification, prevention, and / or conferment of resistence to various plant diseases and / or disorders, particularly those associated with modulating environmental stress responses, such as drought and salt tolerance.

The invention provides a novel CkNHX genen and excision adorn gene CkNHXn thereof. The gene stems from Caragana korshinskii Kom, its gene codes Na+ / H+ antiporter gene. The cDNA obtained by clone constructs yeast expression carrier and plant expression carrier. The yeast mutant strain vertifies salt resistance thereof by complament experiment. Moreover, a transgenic plant is also obtained. By testing salt resistance of transformed plant, transformation of the gene can make the transgenic plant with salt resistance.

The present invention provides isolated or genetically modified strains of microorganisms that display enhanced resistance to acetate as a result of increased expression of a sodium proton antiporter. The present invention also provides methods for producing such microbial strains, as well as related promoter sequences and expression vectors. Further, the present invention provides methods of producing alcohol from biomass materials by using microorganisms with enhanced resistance to acetate.

An SOS gene has been isolated through PCR cloning from Thellungiella halophila and is designated TSOS1. The polynucleotide encodes a transmembrane protein with similarities to plasma membrane Na+ / H+ antiporters from bacteria and fungi. The invention encompasses the TSOS1 gene, the corresponding protein, closely related polypeptides that confer salt tolerance, and related polynucleotides that encode a polypeptide that has Na+ / H+ antiporter activity.

The invention provides a novel plant strong salt tolerant gene AtNHXS1 acquired through DNA reshuffling technology, and the ionic transport activity of Na+ / H+ antiporter protein coded by the gene is stronger than that of wild Na+ / H+ antiporter protein ATNHX1. A nucleotide sequence of the gene as shown in SEQ ID NO:1 also comprises genes of the nucleotide sequence of sequence 1 in a sequence tablewith the homology between 70 and 100 percent, or a nucleotide sequence of an amino acid sequence of sequence 2 in a coded sequence table. The new Na+ / H+ antiporter has a protein of the amino acid sequence of sequence 2 in the sequence table, protein of the amino acid sequence of the sequence 2 with the homology between 70 and 100 percent, or protein which replaces, deletes or adds one or a plurality of amino acids in the amino acid sequence of the sequence 2 with the same homology. The invention also provides the construction of recombinant vector, the transgenic plant and other methods so asto apply the gene and the protein, thereby cultivating a novel variety of transgenic plant with strong capacity of salt tolerance or other improved biologic characters.

The present invention relates to the cloning, recombination and salt tolerance analysis of cotton Na+ / H+ reverse transport protein GhNHX1 gene, and belongs to the field of molecular biology and biological technology. Total RNA is extracted from cotton leaf treated with 0.4 mol / L NaCl solution and inversely transcribed into cDNA. Facultative primer is used for conventional PCR to obtain intermediate segment, and whole length cDNA is obtained through fast amplification in 3' and 5' ends. The gene is transformed to salt-sensitive yeast mutant to restore its salt tolerant capacity to some degree; and the gene is further transformed to tobacco to obtain transgenic plant capabl eof growing normally in salt concentration of 200 mmol / L. Therefore, the gene is one important salt tolerant gene and may be used in raising the salt tolerant capacity of plant for plantation in saline land.

The invention relates to the field of plant gene engineering, providing a buckwheat Na+ / H+ antiporter FtNHX. The buckwheat Na+ / H+ antiporter FtNHX is provided with SEQ ID No:2 amino acid residue sequence in a sequence table, or the buckwheat Na+ / H+ antiporter FtNHX is obtained by the substitution, deletion or adding of one or multiple amino acid residues by SEQ ID No: 2 in the sequence table, has the same activity with the SEQ ID No:2 amino acid residue sequence and is derived by SEQ ID No:2. The gene for coding the protein is preferably selected from a nucleotide sequence comprising the 288th-1949th bit of SEQ ID No:1, or the gene is a nucleotide sequence which has more than 90% of homology with a DNA sequence specified by the SEQ ID No:1 and codes same functional protein. The invention also provides methods for recombinant vector construction, transgenic plant and the like to apply the above gene and protein, and can cultivate new improved gene plant species with stronger salt tolerance or other biological characters.

A method for cultivating sugar beet with strong salt tolerance and drought resistance, the purpose of which is to avoid the defects of traditional breeding and the lack of previous techniques for single gene transformation, and realize the combination of two Na+ / H+ antiporter genes ZxNHX and vacuolar Membrane H+-pyrophosphatase gene ZxVP1-1 is polymerized, and a new transgenic sugar beet variety (line) co-expressing ZxNHX and ZxVP1-1 is obtained through genetic transformation, providing a method for cultivating sugar beets with strong salt tolerance and drought resistance and high sugar content; The steps include seedling cultivation, seedling infection, molecular identification and stress resistance evaluation. This method greatly shortens the cultivation time of transgenic seedlings, the whole cycle is controlled at about 5 months, no callus is required, and the genetic transformation efficiency is as high as 10%.

Provided herein are compositions and methods useful for identifying and counter-selecting maize plants having enhanced yield-related traits relative to control plants under abiotic stress conditions, such as salt stress and / or drought. The methods use molecular genetic markers to identify, select and / or construct salt stress tolerant and / or drought tolerant maize plants. Also provided is the enhancement of crop plants to salt stress and / or by transforming crop plants with maize antiporter / sodium ion transporter or by introducing favorable allelic variants of maize antiporter / sodium ion transporter gene via gene editing or drought tolerance methods.

The present invention belongs to the cloning, recombination and salt endurance function analysis of couchgrass sodium ion reverse transport protein ENHX1 gene, and belongs to the field of molecular biology and biological technology. General RNA is first extracted from couchgrass root and then inverse transcripted into cDNA. A pair of facultative primer is designed based on the conservative amino acid sequence of other plant's sodium ion reverse transport protein CycD2 for conventional PCR, land the PCR product is connected to pGEM-The vector to convert DH5 alpha cell and determine sequence. Then, whole length cDNA is obtained via fast amplification in 3' and 5' ends. Further, positive-sense expression vector is constituted to convert pseudomustard.

This invention is fake unicell bacteria Na+ / H+ antiport albumen gene and its clone method, it relates to one kind of gene clone. One kind of fake unicell bacteria Na+ / H+ antiport albumen structure gene and one kind of quickly and economic clone method are provided, gene length is 1089bp, coding 362 amino acids. Procedures are that extra anti-salt fake unicell bacteria is inoculated and cultivated, whole DNA is extracted, primer is designed, PCR reaction and amplified product is gel imaged system sweep record, then the amplified about 1.1kb tripe is cut down. One gland piao lin deoxyribonucleotide (A) is added to end of PCR product, above clear liquid is abandoned, and 20muL weight distilled water is added to dissolve DNA. Carrier is connected with DNA to form single colony. White colony is selected and recombination particle is extracted by caustic cracking solution. Goal gene is identificated and anti-salt level of transformant is detected, clone gene of transformant is sequenced and weight plasmid of transformant is identificated, then colone gene is estimated.

The present invention relates to cloning, recombination, salt endurance function analysis and applications of Na+ / H+ reverse transport protein MsNHX genes in alfalfa, and belongs to molecular biology and biological technology field. The total RNA is extracted from roots of alfalfa, then 1 microgramme total RNA is reversely transcripted into cDNA. According to conservative amino acid sequences in Na+ / H+ reverse transport protein in other plants, a pair of degenerated primers are designed to execute a routine polyase chain reaction (PCR), wherein the PCR product is connected to a pGEM-T carrier to converse DH5 alpha cells and execute sequence determination. Then, 3' and 5' tail ends rapid amplifications are executed to obtain cDNA with full-length. Right expression carriers are further constructed for conversion of arabidopsis thaliana. The transgenic arabidopsis thaliana possesses higher salt resistant capability. Hence the transgenic double-seminal leaf crops such as heart trefoil will improve its salt resistant capability, yield and quality, then the planted area of dicotyledon at alkaline land can be expanded to generate huge economic benefit and social benefit.