8results about How to "High genetic stability" patented technology

The invention relates to the technical field of plant genetic engineering and agricultural planting, in particular to application and method of an SlGRXC9 gene in improvement of tomato cadmium stress tolerance, the number of the SlGRXC9 gene is Solyc07g053550, the core coding region sequence of the SlGRXC9 gene is SEQ ID NO.1, and the coded protein sequence is SEQ ID NO.2; through construction of SlGRXC9 overexpression transgenic tomatoes, heterologous expression of protein encoded by the gene in plant cells or use of the gene as a molecular breeding target, the system activity of antioxidant enzymes such as SOD, POD, CAT and GR in tomatoes can be enhanced, cadmium stress induced H2O2 and O2-accumulation and membrane lipid peroxidation damage are reduced, and absorption and accumulation of the tomatoes to cadmium ions are not affected; according to the method, the growth ability and physiological stability of the tomatoes under cadmium stress are remarkably improved, the risk of nutrient imbalance is avoided, the hereditary stability is high, and the method can be widely applied to safe production of the tomatoes in cadmium-contaminated soil and creation of stress-tolerant germplasm.

The present invention relates to a recombinant halomonas comprising an exogenously introduced xylose metabolic pathway and a metabolic pathway for synthesizing a copolymer of hydroxybutyric acid (HB) and lactic acid (LA), whereby the copolymer can be synthesized from a xylose-containing cellulose hydrolysate, the LA ratio can be controlled by further promoter modification and process optimization, and industrial enlargement is facilitated.

This invention discloses a drug-resistant Ewing sarcoma cell line, named human Ewing sarcoma cell ES 003, which was deposited at the China Center for Type Culture Collection on March 10, 2026, with accession number CCTCC NO: C202642. The cell line exhibits doxorubicin resistance; specifically, doxorubicin has an IC50 of [missing information - likely referring to an IC50 value] against the human Ewing sarcoma cell ES 003. 50 Above 5μM.

The invention relates to the technical field of microorganisms, in particular to streptomyces noursei for producing multi-fungal element B and a method for increasing the yield of the multi-fungal element B. According to the streptomyces noursei for producing the multi-fungal element B, negative regulation of the multi-fungal element B is relieved or negative regulation is relieved and positive regulation is enhanced through a combined genetic engineering strategy, so that the yield of the multi-fungal element B is remarkably increased, and byproducts are remarkably reduced; in addition, the strain also has relatively high genetic stability. The method for increasing the yield of the polymycotin B of the streptomyces nosella provides an effective transformation target for construction of a polymycotin B production strain, and has a relatively good application prospect in the production of the polymycotin B. The invention further provides a method for improving the yield of the polymycotin B of the streptomyces nosella.

The application relates to the fields of molecular biological technology and livestock breeding technology, in particular to a SNP molecular marker related to a total number of piglets character, a detection primer pair, a kit and application of the SNP molecular marker in a method for breeding large white pigs with high number of piglets, the SNP molecular marker is located on a pig 9th chromosome, a physical position is located at chr9:65633096 of a genome version Ensembl Sscrofa11.1, a polymorphism site is C or A, and the C allele is positively correlated with the high number of piglets character; through genotype discrimination, selection breeding can be carried out: an individual with a genotype of C / C is preferentially selected or reserved as a breeding pig, because the total number of piglets has the highest potential, so that the genetic improvement speed of a population breeding performance is accelerated.

The invention discloses an efficient implementation method for wheat breeding, and relates to the technical field of crop genetic breeding, and the method comprises the following steps: S1, setting a parent screening index system based on a target breeding demand, analyzing and calibrating indexes through big data, and screening parent materials conforming to the index system, hybridizing by using a flowering phase regulation and control technology and artificial pollination to obtain F1-generation seeds; and S2, constructing a filial generation stepped cultivation system, and carrying out expanding propagation from F1-generation mixed germplasm to F4-generation strain planting. According to the efficient implementation method for wheat breeding, by comprehensively applying technical means such as big data analysis, molecular marker-assisted selection and a stepped cultivation system, the efficiency and accuracy of wheat breeding are remarkably improved, parent screening indexes are calibrated by means of big data, the suitability of genetic differences of parent materials is ensured, and the method is suitable for popularization and application. A foundation is laid for polymerization of excellent characters, the breeding period is effectively shortened, and the completeness of standard execution and data recording is ensured.

This invention discloses a method for improving the stability of arginine production capacity in bacterial strains, comprising the following steps: using *Corynebacterium glutamicum* producing L-arginine as the base strain, inactivating or attenuating the gene NCgl2644 / cg3035 in the genome. The method of this invention can effectively improve the genetic stability of L-arginine-producing strains.

The invention discloses a seed production method and application of a terminal paternal line for producing tile grey chickens with crested characters, and belongs to the technical field of poultry genetic breeding and propagation. According to the method, the grey character of the tile grey chicken and the appearance character of the crested head of the Taihe black-bone chicken are successfully combined for the first time, high-quality gene resources of the tile grey chicken and the Taihe black-bone chicken are effectively integrated, the genetic advantages of local varieties are exerted, and a feasible path is provided for innovative utilization of local poultry varieties; by utilizing a molecular marker-assisted breeding mode, the genetic stability of target traits is directionally enhanced, the breeding period is shortened, and the breeding efficiency is remarkably improved; a new poultry strain with white feather is used as a terminal paternal line to be hybridized with other colored feather lines, so that commercial generation tile grey chickens with gray feather can be produced, and the difficulty of breeding the same commercial line by using commercial generation broiler chickens and the difficulty and cost of reverse imitation are greatly increased. The method has wide application prospects in the aspects of characteristic poultry breeding, ornamental poultry breeding and high-quality poultry breeding.