205 results about "Functional genes" patented technology

The invention belongs to the technical field of plant genetic engineering, and particularly relates to an SCRE10 gene for improving rice disease resistance and application of the SCRE10 gene, the base sequence of the SCRE10 gene is shown as SEQ ID NO.1, and the amino acid sequence of the SCRE10 gene is shown as SEQ ID NO.2. Through construction of a dexamethasone induced expression SCRE10 transgenic rice plant, it is found that the transgenic rice can significantly induce PR gene expression and active oxygen outbreak, and the resistance of rice to false smut and bacterial leaf blight can be improved. The invention proves that heterologous inducible expression of the Ustilaginoidea virens SCRE10 gene has the function of positively regulating the disease resistance of the rice, and the SCRE10 gene can be used for improving the disease resistance of the rice, which is of great significance to the creation of disease-resistant germplasm of the rice.

The invention discloses a crested ibis habitat ecological quality trend analysis method and system, and relates to ecological quality monitoring. The method comprises the following steps: S1, constructing an intelligent sensing network, synchronously obtaining multi-source data of a habitat, identifying activity events of crested ibis, and generating a multi-dimensional habitat parameter table; s2, collecting environmental samples, and generating a microbial functional gene abundance matrix through metagenome sequencing and bioinformatics analysis; s3, taking the activity events of the crested ibis as behavior tags, and generating habitat function health indexes by coupling the parameter table and the matrix training machine learning prediction model; s4, performing spatial interpolation and trend analysis based on the habitat function health index to generate an ecological quality space-time evolution graph; and S5, based on the ecological quality space-time evolution graph, performing quantitative analysis by using a spatial differentiation statistical model, and generating a trend analysis report. By fusing multi-source data, real-time dynamic evaluation of habitat ecological quality and quantitative analysis of driving factors are realized, and a direct decision basis is provided for accurate protection.

The invention discloses a pennisetum purpureum CpERF37 transcription factor and cold-resistant application thereof, and relates to the technical field of plant genetic engineering. According to the invention, the Pennisetum purpureum-sourced ERF transcription factor CpERF37 is cloned and functionally identified for the first time, and heterologous expression verification in a model plant arabidopsis thaliana proves that the Pennisetum purpureum-sourced ERF transcription factor CpERF37 has a remarkable effect on improving the low-temperature tolerance of plants, and functional gene resources related to low-temperature stress response are enriched. The method not only has theoretical innovation, but also has a definite application prospect, and can provide effective gene resources and technical support for cold-resistant improvement of pasture and crops.

The invention discloses a tobacco black shank-resistant G24 gene and application thereof in disease-resistant variety cultivation, and belongs to the technical field of tobacco molecular biology and genetic breeding. The nucleotide sequence of the G24 gene is as shown in SEQ ID NO: 1 or has the homology greater than or equal to 95% with the SEQ ID NO: 1; after the expression of the G24 gene is inhibited or the G24 gene is knocked out, tobacco with black shank resistance can lose the black shank resistance, and infected tobacco can obtain the black shank resistance by over-expression of the G24 gene. Based on the gene, the tobacco variety cultivated by the invention has high resistance to the phytophthora parasitica var nicotianae No. 0 microspecies, has excellent agronomic and quality characters, can be used for preparing tobacco products such as cigarettes and the like, and reduces the use of bactericides. The method solves the problems of undefined functional genes and low selection efficiency in existing black shank resistant breeding, and provides a key technology for green prevention and control of tobacco black shank.

The invention provides an agrobacterium rhizogenes-mediated forsythia suspensa hairy root genetic transformation method and application thereof, and belongs to the technical field of plant genetic engineering. The method comprises the following steps: introducing an expression vector into agrobacterium rhizogenes, and mixing with an infection solution to prepare an agrobacterium rhizogenes infection solution; the forsythia suspensa stem is put into the agrobacterium rhizogenes infection liquid to be infected for 0.5-1 h through a vacuum infiltration method, and the infected forsythia suspensa stem is cut into a matrix to be subjected to dark culture and then continues to grow till hairy roots are generated; the OD600 value of the agrobacterium rhizogenes infection liquid is 0.5 to 1.0. The method is suitable for an agrobacterium rhizogenes mediated genetic transformation system of the fructus forsythiae, and the system provides technical support for functional gene research, medicinal component analysis and molecular breeding of the fructus forsythiae, and has important significance for promoting genetic improvement and resource utilization of the fructus forsythiae.

The invention belongs to the technical field of gene editing, and particularly relates to a construction method and application of a needle mushroom CRISPR / Cas9 gene editing vector. The CRISPR / Cas9 gene editing vector for flammulina velutipes is characterized in that the vector takes pFgnpt as a skeleton vector, and further comprises a Cas9 expression cassette and an sgRNA expression cassette; the nucleotide sequence of the Cas9 expression cassette is as shown in SEQ ID NO. 10. The nucleotide sequence of the sgRNA expression cassette is as shown in SEQ ID NO. 11. According to the present invention, with the agrobacterium-mediated transformation technology, the stable expression of Cas9 and sgRNA in the flammulina velutipes body is achieved, the efficient and stable CRISPR / Cas9 gene editing system is established, and the technical support is provided for the flammulina velutipes variety improvement, the functional gene research and the industrial upgrading.

The invention relates to the technical field of animal molecular genetics, molecular marker breeding and aquatic genetic breeding, in particular to a Koi-TAT gene related to golden and silver scale traits of fancy carp, an SNP molecular marker, a primer pair and application. According to the invention, a functional gene highly associated with the Koi gold and silver scale character is found, a specific molecular marker and a detection method are developed on the basis of the gene, and by utilizing the molecular marker and the detection method disclosed by the invention, an individual with excellent gold and silver scale character can be efficiently identified, and the molecular marker is suitable for molecular-assisted selective breeding and early-stage seed selection. The invention provides an important molecular tool for phenotype genetic improvement of aquarium fish, also provides a basis for molecular mechanism research of gold and silver scale formation, and has a wide application prospect.

The invention discloses an application of Micropterus salmoides Piscidin polypeptide in preparation of an anti-fish virus drug. The amino acid sequence of the polypeptide is as shown in SEQ ID NO. 2 or SEQ ID NO. 3. The research finds that the micropterus salmoides Piscidin is an antibacterial peptide with an antiviral function, the polypeptide synthesized by the artificially synthesized micropterus salmoides Piscidin has the characteristic of inhibiting fish DNA virus replication, has a remarkable inhibiting effect on fish iridovirus replication at low concentration, and can be applied to preparation, research and development of fish antiviral drugs. Research of the antibacterial peptide has important scientific value and application value for further research and development of disease-resistant functional gene products.

The invention provides micropterus salmoides Hepcidin-1 (Ms-Hepcidin-1) and an application of a synthetic polypeptide of the micropterus salmoides Hepcidin-1 in preparation of an anti-fish virus drug. The research finds that the Ms-Hepcidin-1 synthetic polypeptide has a remarkable antiviral effect and is a novel antibacterial peptide with a function of inhibiting fish viruses. The Ms-Hepcidin-1 synthetic polypeptide and the recombinant eukaryotic expression vector of the Ms-Hepcidin-1 synthetic polypeptide can obviously reduce the transcription level of MCP, MMP and DNMT genes and the MCP protein level of LMBV, inhibit the replication of the LMBV and reduce the virus titer, and have an obvious fish virus resisting effect. Moreover, the polypeptide synthesized by Ms-Hepcidin-1 is simple to prepare, low in cost, safe to use and convenient to preserve, can be used as a novel antiviral functional gene product to prepare antiviral drugs for fishes, and has important significance on prevention and control of fish iridovirus diseases.

The invention discloses a method for assisting hawthorn breeding based on phenotypic omics, and relates to the technical field of phenotypic omics assisted hawthorn breeding. Comprising the following steps: S1, acquiring phenotypic data of normally growing hawthorns by using a high-throughput imaging system and a phenotypic analysis system, and detecting and analyzing various characters of the hawthorns; s2, establishing a hawthorn multi-dimensional phenotypic group database, and obtaining hawthorn breeding key character quantitative indexes; s3, constructing a phenotype-genotype correlation model according to the obtained hawthorn breeding key character quantitative indexes, and mining new functional genes to realize early prediction of breeding; and S4, creating a phenotype exponential weighting algorithm for parent matching. The method for assisting hawthorn breeding based on phenotypic omics is established, the problems of long hawthorn breeding period and high cost are solved, and the hawthorn breeding efficiency is effectively improved.

The invention discloses a corn genome breeding 45K chip and application thereof, the chip covers 44, 637 SNP loci and 27 InDel loci, and the SNP loci are uniformly distributed on 10 chromosomes and part of scaffold of a corn genome and have rich polymorphism. Compared with an existing corn chip, the SNP marker of the 45K chip is derived from re-sequencing results of 507 corn varieties, has better variety representativeness, and contains 925 key functional gene loci for close planting and high yield and 96 corn variety authenticity identification loci; the method can be more effectively used for functional gene identification, genetic diversity analysis, heterosis group division, whole genome selection analysis and variety authenticity identification.

The application belongs to the technical field of plant genetic engineering, and discloses a functional gene PbCOB.A.1 and application thereof. The in-vitro expressed recombinant protein PbCOB.A.1 can promote pollen tube growth of Rosaceae fruit trees, improve pollination efficiency, and expand the regulation mechanism of non-S factors participating in self-incompatibility reaction in pears. The mechanism of pear pollen tube elongation is researched by using magnetic transfection technology, so that the labor cost can be greatly reduced, and a theoretical basis is provided for pear breeding work.

The invention relates to the technical field of genome assembly, in particular to a medicinal plant genome assembly method and system based on high-throughput sequencing. The method comprises the following steps: acquiring a target sequencing sequence, and screening a function influence sequence; performing repetitive classification on the target sequencing sequence to obtain a non-repetitive sequence cluster and a repetitive sequence cluster, and dividing the repetitive sequence cluster into a functional repetitive sequence and a non-functional repetitive sequence; determining dynamic association strength by combining expression abundance of functional genes, content detection of medicinal components and base overlapping characteristics of adjacent sequences; constructing an association network; and according to the dynamic association strength in the association network, aiming at the functional association type repetitive sequence, the non-functional association type repetitive sequence and the adjacent non-repetitive sequence, respectively carrying out sequence splicing by adopting a differential assembly path to obtain a complete genome assembly result. According to the method, the problems of splicing errors, fragment breakage and redundancy caused by repeated sequences can be solved, and the assembly accuracy and integrity are remarkably improved.

The application belongs to the field of biological information visualization, and discloses a three-dimensional visualization functional gene browser and system based on Z series closed loop coding, which solves the problems of track disorder, arc winding, dependence on scaling and incomplete coding of existing tools. The application constructs Z series closed loop coding, packs genes and non-gene regions into Z0~ZN units, and adapts repeat sequences and ring chromosomes. L-X-Y three-dimensional coordinates are established, 65 standardized character libraries are constructed, and amino acids are labeled in a six-color degenerate system. Modular labeling is adopted, continuous functional elements are integrated into M modules, three types of background colors are used to classify levels, the trunk area and the independent labeling area are displayed separately, and tracks and arcs are abandoned. The system supports Z unit addressing, three-level interaction, module linkage, variation marking, Hi-C double-end alignment and reverse complementary strand switching, realizes full-link visualization from whole genome to single base, and is suitable for genomics and clinical variation analysis.

This invention provides a maize plant architecture regulating gene ZmEXO1 and its application, belonging to the field of maize molecular breeding technology. The amino acid sequence of ZmEXO1 is shown in SEQ ID NO.7. Studies have found that ZmEXO1 can regulate maize leaf angle and plant height; mutants with reduced or silenced ZmEXO1 expression lead to smaller leaf angles and reduced plant height. Therefore, gene editing of the ZmEXO1 gene or genetic breeding improvement using Zmexo1 low-expression mutants can obtain maize germplasm with improved plant architecture, which is of great significance for enriching maize germplasm and breeding high-yielding, dense-planting-tolerant varieties. This invention also provides a Kasp molecular marker and Kasp primers closely linked to ZmEXO1, which can be used for marker-assisted selection breeding and the discovery of related functional genes, enabling rapid screening and identification of maize germplasm containing ZmEXO1-modified molecules.

The invention provides a GMRM (Genome-based Mutant RNA Mapping) method taking a genome as a reference, in particular, the invention provides a method for cloning candidate functional genes of wheat stripe rust resistant plants and an analysis process, and the GMRM method disclosed by the invention can be used for simultaneously cloning two genes with complementary disease-resistant functions, namely Yr6NLR1 and Yr6NLR2. In an example of Yr6, the two disease-resistant genes are closely linked genetically, but the cloning process of the genes does not involve any genetic recombination. Therefore, theoretically, the method provided by the invention can be used for simultaneously cloning a plurality of functional complementary genes (namely genes participating in the same pathway) on the premise that the target gene can generate effective mutation through EMS mutagenesis.

The application discloses a SNP molecular marker related to corn plant height regulation and application thereof. The molecular marker sequence is shown as SEQ ID NO. 1, and the base at the 201bp site from the 5' end presents C / T polymorphism. The application uses a temperate corn inbred line Ye107 with lower plant height as a common father, and crosses with one temperate corn inbred line and four tropical / subtropical corn inbred lines as mother lines to construct a corn multi-parent population with significant plant height difference. GWAS analysis and linkage analysis are used to locate a plant height significantly related site Chr1:SNP-25,296,496 on chromosome 1, and the site can explain 3.59% of the plant height phenotype variation. A functional gene for regulating corn plant height is mined from the site, and qRT-PCR results show that the gene is highly expressed in corn intercalary at V14 stage, and it is proved that the gene is highly related to the regulation of corn plant height. The results of the application provide technical support for efficient and accurate breeding of high-stalk or short-stalk high-yield corn varieties by molecular markers.

The invention belongs to the technical field of molecular biology breeding, and particularly relates to application of nucleoside diphosphate kinase GhNDPK9 in promoting salt tolerance of cotton. The amino acid sequence of the protein coded by the GhNDPK9 gene is as shown in SEQ ID NO. 2. The invention discloses the effect of the GhNDPK9 gene in positive regulation and control of the salt tolerance of the cotton, enriches functional genes for salt-tolerant cotton breeding, and provides a new effective way for genetic improvement of salt stress resistance of the cotton. By means of transgenic genetic breeding, the expression level of the GhNDPK9 gene is improved, damage symptoms of plants under the salt stress condition are relieved, the salt tolerance of the plants is enhanced, and then the viability of cotton on salinized soil is improved; the method has wide application prospects and good social benefits in the aspects of genetic improvement of salt-tolerant new germplasm, widening of the suitable planting range of cotton and the like.

The invention discloses application of a functional gene ghrb recombinant variation molecular marker in breeding of hybrid megalobrama amblycephala, and the functional gene ghrb recombinant variation molecular marker is used for identifying germplasm of the hybrid megalobrama amblycephala or screening backcross filial generation of the hybrid megalobrama amblycephala with fast growth character. Wherein the functional gene ghrb recombinant variation molecular marker is obtained by mutation of bases located at the 2079th site, the 2083th site, the 2101th site and the 2161th site of the functional gene ghrb, the base at the 2079th site is C or A, the base at the 2083th site is A or G, the base at the 2101th site is C or A, and the base at the 2161th site is G or C. According to the functional gene ghrb recombinant variation molecular marker, the germplasm of the hybrid megalobrama amblycephala can be rapidly identified, the hybrid megalobrama amblycephala backcross filial generation with the rapid growth character can be accurately screened out, technical support can be provided for accurate cross breeding, and screening sites can be provided for development of breeding chips.

The present application relates to the field of agricultural biotechnology, in particular to a bidirectional promoter derived from Myceliopthora thermophila and application thereof. The bidirectional promoter derived from Myceliopthora thermophila has a unique bidirectional transcription activity feature, and can simultaneously and efficiently initiate the transcription and expression of two independent genes in the same regulation region in opposite directions. The present application provides a more favorable promoter element for the metabolic engineering of the industrial filamentous fungus Myceliopthora thermophila, significantly simplifies the construction process of a multi-gene co-expression system, and realizes the synergistic expression of two functional genes through a single promoter element, which has a wide application space and market prospect in the production of enzyme preparations, biological medicine products and the like.

The invention discloses a method for detecting subcellular localization of a functional gene by using a tea tree leaf, a target gene is expressed in the tea tree leaf through an agrobacterium transformation method, the method has the advantages of short period, rapidness, high conversion rate, low cost, easiness in operation and the like, and the localization condition of the target gene in the tea tree leaf can be more intuitively and accurately observed; and important technical support is provided for tea tree gene function research. Compared with mode plants such as tobacco and arabidopsis thaliana, the novel subcellular localization experimental material has the advantages that the tea tree leaves are used for observing subcellular localization, and a more intuitive and more accurate mode is provided for gene function research in tea trees. In addition, the method is short in conversion period, fluorescence signals can be observed 36-48 hours after conversion, and the method is fast and efficient.

This invention discloses a strain of Aspergillus sp., DLF18, and its applications, belonging to the field of microbial technology, with accession number CGMCC NO.41737. This strain can effectively utilize rice straw and / or sugarcane bagasse to produce humic acid, with a humic acid content of 16.5% per gram of fermentation supernatant after rice straw fermentation. Applying the fermentation product of DLF18 to crops can significantly improve crop growth and increase the humic content in the soil. Simultaneously, metagenomic analysis results show that, compared with the control group, the application of DLF18 to the soil significantly altered species β-diversity, functional gene abundance, and inter-group differences. These findings indicate that DLF18 has broad application prospects in agricultural straw utilization and soil remediation.

The application discloses a functional gene PaSPL8 for regulating apricot fruit ripening, and the nucleotide sequence of the PaSPL8 gene is shown as SEQ ID NO. 1. The functional gene PaSPL8 for regulating apricot fruit ripening is used for regulating apricot or tomato fruit ripening, and the fruit ripening is delayed by increasing the expression amount of the PaSPL8 gene; or the functional gene PaSPL8 for regulating apricot fruit ripening is used for regulating the content of abscisic acid in plant tissues. The application verifies that the PaSPL8 gene regulates the ripening of apricot fruits by regulating the content of ABA in apricots, and therefore, the PaSPL8 gene can be used for apricot breeding.

This invention provides the application of Hepcidin-1 (Ms-Hepcidin-1) and its synthetic polypeptide in the preparation of antiviral drugs for largemouth bass. The invention reveals that the Ms-Hepcidin-1 synthetic polypeptide exhibits significant antiviral activity and is a novel antimicrobial peptide with the function of inhibiting fish viruses. Both the Ms-Hepcidin-1 synthetic polypeptide and its recombinant eukaryotic expression vector can significantly reduce the transcriptional levels of MCP, MMP, and DNMT genes and the MCP protein level of LMBV, inhibit LMBV replication, and reduce viral titers, demonstrating significant antiviral activity against fish viruses. Furthermore, the polypeptide synthesized from Ms-Hepcidin-1 is simple to prepare, low in cost, safe to use, and easy to store. As a novel antiviral functional gene product, it can be applied to the preparation of antiviral drugs for fish, which is of great significance for the prevention and control of iridovirus disease in fish.

This invention discloses a rice OsRbohB protein, its encoding gene, and its applications. The amino acid sequence of the OsRbohB protein is shown in SEQ ID NO.2, and the nucleotide sequence of its encoding gene is shown in SEQ ID NO.1. This invention provides a rice transformation overexpression vector that overexpresses the OsRbohB gene using the ZmUbi promoter. The plant height, number of grains per panicle, and grain length of the overexpressed plants were significantly increased. This invention is the first to demonstrate that rice OsRbohB is a functional gene regulating rice plant height, number of grains per panicle, and grain length. The cloning and biological function verification of this gene have important reference value for the study of the molecular mechanisms regulating important agronomic traits in rice. Since the above traits are important traits related to rice plant type and yield, the functional analysis of OsRbohB in this invention provides a new candidate gene for rice design breeding and has great potential application value.

The invention belongs to the technical field of plant genetic engineering and biotechnology, and discloses a construction method of a Hainan camellia oleifera seedling transgenic hairy root system, which comprises the following steps: selecting a 3-month-old camellia oleifera seedling explant Haidao camellia oleifera No.4, pretreating, transferring a target plasmid into agrobacterium rhizogenes K599 by an agrobacterium-mediated method, and culturing to obtain the Hainan camellia oleifera seedling transgenic hairy root system. Preparing an infection solution, optimizing infection conditions, inducing hairy roots to generate, and finally verifying the transgenosis effect through fluorescence observation and molecular identification. According to the method, an infection liquid formula, infection conditions and culture conditions are optimized, the induction efficiency of the transgenic hairy roots is remarkably improved, technical support is provided for functional gene research and genetic improvement of Hainan camellia oleifera, and the method has important application value.

This invention relates to the field of biotechnology, specifically to... StNCED3 The application of genes in improving the abiotic resistance of potatoes: This invention involves constructing... StNCED3 The screening and identification of gene overexpression vectors and transgenic lines, and their application in improving potato resistance to drought and low-temperature stress, revealed the overexpression of... StNCED3 The gene can significantly enhance the drought and cold resistance of potato plants, providing core functional genes and high-quality breeding materials for molecular breeding of potatoes for drought and cold resistance. It effectively solves the technical bottlenecks of weak drought and cold resistance of the current main potato varieties and unstable yield in arid and low-temperature production areas, and has important theoretical research value and industrial application prospects.

The invention belongs to the field of molecular biology of forestry insects, and particularly relates to a fluorescent quantitative reference gene of different gender adults of yellow shield elephant, as well as a primer and application of the fluorescent quantitative reference gene. According to the method, 8 candidate genes commonly used as reference genes are referenced and selected according to transcriptome sequencing data of the hedychium aureum, gene sequences of the 8 reference genes are identified, the stability of the candidate reference genes is evaluated through five algorithms, and the fluorescent quantitative reference genes suitable for the hedychium aureum adults with different genders are obtained. And a real-time fluorescent quantitative PCR (Polymerase Chain Reaction) primer of the candidate reference gene is designed. The detection primer provided by the invention is strong in specificity and high in amplification efficiency, fills up the current situation that no reference gene exists under adults with different genders of the hedychium aureum, provides a reliable analysis basis for expression quantification of related functional genes under the adults with different genders of the hedychium aureum, and has a good application prospect. A necessary earlier-stage foundation is laid for analysis of subsequent molecular mechanisms and mining of key functional genes, and repeatability, stability and reliability of functional gene research can be improved at the same time.

The present application relates to the technical field of plant breeding, and particularly relates to a rice whole genome molecular marker combination and application thereof. The molecular marker combination comprises molecular markers with sequence numbers 1-329 shown in table 1 and molecular markers with sequence numbers 1-1058 shown in table 2. The present application carries out systematic screening on functional gene and non-functional gene related SNP sites of rice, and obtains a rice whole genome molecular marker detection system, which can be applied to gene typing of plants, molecular marker assisted breeding of plants, screening or identification of rice blast resistant plant plants or germplasm resources, genetic population structure analysis, kinship evaluation, dominant gene combination selection or germplasm resource diversity evaluation of plants, plant variety identification or purity detection, kinship evaluation of plants, plant variety improvement or excellent trait introduction, and preparation of molecular breeding chips of plants, and has important value in the field of plant breeding.

The application belongs to the technical field of crop molecular breeding, and particularly relates to application of rice OsGLP3-7 gene in regulation of drought tolerance of rice seedling stage. The application proves for the first time that the rice gene OsGLP3-7 is a functional gene for regulating drought tolerance of rice seedling stage, and cloning and biological function verification of the gene have important reference significance for the study of molecular mechanism of drought tolerance of rice seedling stage. The characteristics of the OsGLP3-7 gene and the protein coded by the gene in regulation of drought tolerance of rice seedling stage are utilized, and a genome targeting modification technology such as CRISPR / Cas9 is adopted to screen the strain with improved drought tolerance of rice seedling stage by mutating the nucleotide sequence of the gene, and the application has very important application in agricultural production. It is indicated that the rice OsGLP3-7 gene as a breakthrough point can provide an efficient breeding mode for creating rice varieties, germplasm resources and hybrid rice parents with enhanced drought tolerance of seedling stage.