89 results about "Acetosyringone" patented technology

The invention discloses an efficient virus-induced phytoene desaturase gene silence system for Chinese pink. A specific primer is designed according to a coding gene sequence of PDS (phytoene desaturase), and about 500bp cDNA (complementary deoxyribonucleic acid) fragments are amplified in the Chinese pink through RT-PCR (reverse transcription-polymerase chain reaction). Obtained PDS cDNA fragments are connected to TRV2, and acetosyringone concentration, seedling age and preculture temperature after infection as well as light conditions for plants after preculture are integrated in an assorted manner by optimizing an agrobacterium-mediated virus-induced gene silence system according to photobleaching frequency, bleached leaf area and bleached conditions of the plants, so that the rapid efficient virus-induced silence system is established, virus-induced gene silence character can be obtained, and further, the problem that Chinese pink gene functions are verified effectively is solved.

The invention discloses laccase CotA and application thereof. DNA (deoxyribonucleic acid) sequences of the laccase CotA are shown as SEQ ID NO.2, and amino acid sequences of the laccase CotA are shown as SEQ ID NO.1. The laccase CotA and the application have the advantages that the prepared laccase CotA is mature in operation, easy and convenient to operate, high in enzyme activity and wide in pH (potential of hydrogen) and temperature catalysis range, is good in stability in high-salinity and high-concentration organic solvents under alkaline and high-temperature conditions and is high in applicability as compared with fungal laccase; synthetic dye with different chemical structures can be effectively decolorized by the laccase CotA under the condition of participation of acetosyringone which is a mediator substance, excellent decolorization effects still can be kept under alkaline conditions, and accordingly the laccase CotA has an excellent application prospect in the aspect of treatment on industrial dye wastewater.

The invention discloses a method for preparing acetovanillone and acetosyringone (AS) through oxidation of lignin by using an oxidizing agent. According to the method, an oxidizing agent reacts with the lignin in an alkaline solution; the resulting reaction solution is subjected to acidification, extraction and concentration to obtain the crude product after completing the reaction; the treatments of recrystallization and rectification are performed to obtain the acetovanillone and the AS. The oxidizing agent is the one selected from p-nitrobenzoic acid, 3,5-dinitrobenzoic acid, 3-nitrosalicylic acid, 5-nitrosalicylic acid or 3,5-dinitrosalicylic acid. According to the present invention, the oxidizing agent has low toxicity, such that the harm to the environment can be reduced; the post-treatment steps are simplified, and the uses of the organic solvents are reduced, such that the secondary pollution to the environment is reduced; the yield is relatively high, the purities of the products are respectively 97.3% and 98.2% through the gas chromatography analysis; the two important chemical raw materials of guaiacol and lilac alcohol can be synchronously obtained when preparing the acetovanillone and the AS.

The invention discloses a method for preparing acetovanillone and acetosyringone by catalytically saponifying lignin. The method comprises the following steps: by taking lignin as a raw material, performing microwave alcoholysis in an alcohols solvent containing a loaded metal catalyst; cooling, filtering and washing, thereby acquiring a liquid product containing acetovanillone and acetosyringone as primary components. The loaded metal catalyst is formed by active center Co and carrier. The invention provides an environment-friendly and low-cost loaded metal catalyst by modifying the traditional method for degrading lignin; two compounds in high yield, namely, acetovanillone and acetosyringone, are prepared by efficiently degrading the lignin under a microwave heating condition; the method is characterized by mild reaction condition, short heating time and higher reaction efficiency.

The invention discloses a non tissue culture gene transferring method by using half of a peanut seed as an acceptor, the method comprises: (1) shelling the peanut seed, flushing and soaking by distilled water; then disinfecting, shelling, cutting the seed, taking half of a seed containing embryo, cutting embryo along cotyledon nodes of the embryo to obtain an explant; (2) inoculating Agrobacterium to a YEP liquid nutrient solution and cultivating overnight; centrifuging to collect Agrobacterium thalline, hanging in a liquid MS medium containing acetosyringone to obtain an invasion, (3) immerging the explant into the invasion; taking out of the explant and laying in a co-culturing medium, culturing for 2 to 3 days in the dark; culturing for 7 to 10 days with light irradiation to obtain a co-culturing explant, (4) removing the co-cultured explant to disinfection sandy soil, culturing and acclimatizing, moving into a greenhouse for breeding. The method of the present invention has the advantages of short experimental period, high conversion efficiency and survival rate. The conversing effect is stable among the different genotype peanuts; the strict tissue culture technique required by a traditional co-culturing method can be avoided.

The invention relates to a method for introducing a RNA (ribonucleic acid) interfering gene resistant to root-knot nematodes into cucumber, which relates to the technology of cucumber transgene and is characterized in that by means of an exogenous gene contained gene pCAGC1341-dsMiMpkl, 100mg/L lipoic acid and 50mg/L acetosyringone are added in each neutral co-culture medium of Agrobacterium Tumefaciens suspension to increase conversion rate of Agrobacterium Tumefaciens. In addition, the invention further provides a hygromycin gradient screening method and corresponding medium schemes, so that the efficiency of obtaining cucumber positive transformants is increased further.

A method for producing transgenic plants, including treating a target tissue using plasmolying media (PM) which contains 4% to 10% of sucrose and 100 μM to 300 μM of Acetosyringone (AS) and gold particles. The target tissue is infected by a bacterial suspension using a suitable strain and a suitable transformation vector. A PM containing 4% to 10% sucrose and 100 μM to 300 μM AS is treated for a period between 1 to 3 days. Cultivation is performed in a cultivation media in a dark condition at a temperature between 25° C. to 30° C. A non-selection media with an antibiotic is introduced. A selection media containing an active ingredient phosphinothricin (PPT) is introduced in a light condition at a temperature of between 25° C. to 30° C. in a sub culture for a period of between 3 weeks to 1 month. The putative transformant is regenerated and the number of copies of the transgenes is analyzed.

The invention provides a tomato transformation method of agrobacterium tumefaciens mediation. Cotyledon explants (the seedling age is 8 days) are precultured for one day in an MSB5 culture medium with 2.0 mg/L of zeatin and 0.1mg/L of IAA, and are then infected by EHA105 agrobacterium for 20 minutes; the concentration of OD600 is 0.2 to 0.6; after the culture is performed for 3 days on a co-culture medium, the co-culture is performed for one day on a culture medium of 500mg/L of cephalosporin; the screening is performed for 6 to 8 weeks on the culture medium containing 100mg/L of kanamycin and 500mg/L of carbenicillin. The method has the advantages that the conversion efficiency is high; feeder layer cells, acetosyringone and bleeding sap are not needed; the conversion efficiency reaches 20 percent or higher; simplicity and high repeatability are realized.

The invention relates to a method for obtaining hairy roots of broccoli. The method comprises the step (1) of clipping explants of aseptic seedlings of rapid propagation of the same batch, putting the explants on sterile filter paper, using a sterile needle head to prick 2-8 wounds on the surfaces of the explants, inoculating the explants in an MS culture medium and performing preincubate in the dark to obtain the oreincubate sterile seedling explants; step (2) of using agrobacterium rhizogenes to infect the sterile seedling explants to be cultured, using the sterile filter paper to soak up residual bacterial liquid on the surfaces, inoculating the explants to an MS culture medium adding acetosyringone to culture the explants together in the dark to obtain receptor explants cultured together; and step (3) of transferring the receptor explants cultured together to an MS culture medium adding Carbencillin Disodium to be cultured in the dark, transferring the receptor explants once every 5 days and obtaining the aseptic hairy roots after the explants are transferred from 2 to 5 times. The method is simple and efficient and suitable for industrialized production.

The invention discloses a CheY2 mutant protein and application thereof. Specifically, at least one of amino acids, located in the 93rd position, 96th position, 107th position, 109th position and 123rdposition of a wild chemotactic response regulatory protein, of the CheY2 mutant protein mutates. Compared with a wild CheY2 protein, the CheY2 mutant protein can remarkably improve swimming capacityof agrobacteria on a swimming flat plate, remarkably improve chemotactic capacity for a single substance acetosyringone (AS), but not limited to AS, in capillary tubes, and remarkably improve bindingcapacity of the CheY2 protein and FliM protein in the flagellar motor regulating area.

The invention discloses an agrobacterium-mediated dendrocalamus latiflorus transformation method which comprises the steps of preparing explants, preparing an agrobacterium infected bacteria solution, infecting, screening, inducing of adventive buds, and inducting and rooting. agrobacterium is utilized to infect explant at stem apex of dendrocalamus latiflorus, co-culture is performed in a NB culture medium containing 2 mg/L, 2,4-D and 200 mu M acetosyringone, and steps such as screening are performed to finally obtain transgenic dendrocalamus latiflorus. The agrobacterium-mediated dendrocalamus latiflorus transformation method utilizes an agrobacterium-mediated efficient transformation system to firstly establish a transgenic system, which takes dendrocalamus latiflorus nutritive organs as start, of dendrocalamus latiflorus, and the system can overcome the obstacle that the conventional breeding method cannot be applied to bamboo, and provides premise for molecular breeding of dendrocalamus latiflorus through the transgenic technology. Through the method, technical support is provided for researching genetic functions of bamboos in the basic research field.

The invention discloses a method for improving the degradation rate of laccase for degrading diethylstilbestrol by using acetosyringone, and an application thereof, and belongs to the technical fieldof environmental pollution treatment. The method comprises the following steps: forming an acetosyringone-laccase medium buffer solution from acetosyringone and laccase, mixing the acetosyringone-laccase medium buffer solution with a diethylstilbestrol solution, performing a reaction in a shaking incubator, and quenching the reaction by using ethyl acetate to realize the degradation of the diethylstilbestrol. The acetosyringone is used as a redox medium for electron shuttle between laccase and a substrate, so that the steric hindrance of laccase is overcome, thereby the laccase can be well combined with the diethylstilbestrol, and the degradation efficiency of the laccase is remarkably improved. The method is simple and efficient to operate, and has extremely high application values in environmental pollution treatment.

The invention discloses an inducing method and proliferation method of red clover hairy roots, and belongs to the technical field of biology. The inducing method comprises the following steps of firstly, performing disinfection and cleaning treatment on red clover seeds, placing the treated red clover seeds in MS liquid culture mediums, and performing culture so as to obtain red clover bacteria-free seedlings; with the red clover bacteria-free seedlings as infestation materials, and injecting agrobacterium rhizogenes infestation liquid into the infestation materials; and then inoculating the MS culture mediums containing acetosyringone, with the infestation materials to which the agrobacterium rhizogenes infestation liquid is injected, performing co-culture treatment, then transferring theco-cultured MS culture mediums into MS culture mediums containing cefotaxime sodium, and performing bacteriostasis culture treatment so as to obtain induced converted hairy roots. According to the inducing method disclosed by the invention, through screening appropriate explants and improving a bacterial liquid infestation manner, besides, through controlling the addition concentration of the acetosyringone and the cefotaxime sodium and controlling co-culture time, the inducing conversion rate and the survival rate of the hairy roots can be greatly increased.

This invention relates to a method for transforming lily with agricillin mediaed ex-source function gene applying a way of transforming lily bulb with agricillins, and applying liquid Ms added by acety1 syringone activation mycelium to get the effect of setting up agricillin mediaed lily gene genetic transformation system and increasing its transformation rate. First of all, the lily bulb is disinfected and cut to small blocks and cultivated on a fix MS culture medium, unpolluted lepises are selected to be cut to form new wounds on the edge, an explant is infected by the resuspended agricillin to be cultivated on a co-culture medium to be selectively cultivated on a screen medium with kantlex to induce resistant adrentitious buds finally to be induced on a rooting medium and to be shift to get regeneration shoots and transformed lily plants.

The invention discloses a genetic transformation method for mung beans. The genetic transformation method comprises the steps: taking a hypocotyl segment containing cotyledonary nodes as explants to carry out infection and co-culture on the explants by an agrobacterium-mediated method, and inducing and regenerating transgenic plants after the infection is finished, wherein the infection liquid isan MSB liquid culture medium containing agrobacterium, 0.15-0.25 mg/L of 6-BA and 100-200 mg/L of acetosyringone, and OD is 0.5-0.6; during co-culturing, the co-culture medium is an MSB solid culturemedium containing 0.15-0.25 mg/L of 6-BA and 100-200 mg/L of acetosyringone. A technical system for genetic mung bean transformation is established, and the genetic transformation method can be used for genetic improvement of mung beans and innovative cultivation of new germplasms and provides a basis for functional gene verification and genome editing character improvement of the mung beans.

The invention discloses a method for efficiently screening out non-transgenic mutants in agrobacterium tumefacien mediated gene editing, which comprises the following steps: (1) connecting a CaMV 35Spromoter started GUS reporter gene to a traditional gene editing vector, and transferring the vector into an agrobacterium tumefacien EH105; (2) infecting common tobacco leaves with the agrobacteriumtumefacien EH105 transferred into the vector by using a leaf disc method, inoculating the infected leaves onto an MS solid culture medium containing acetosyringone, and co-culturing the leaves for 2 days at 25 DEG C in a dark environment; (3) inoculating a co-cultured explant onto a regeneration culture medium without screening pressure, and replacing the regeneration culture medium with a same fresh regeneration culture medium every 20 days; and (4) inoculating regenerated albino buds onto an MS culture medium containing Timentin, and carrying out sampling for GUS dyeing when albino seedlingsgrow to 3-4 leaves, wherein the albino seedlings without GUS signals are candidate non-transgenic mutants. According to the invention, transgenic mutants can be removed and non-transgenic mutant canbe obtained rapidly, and the method is rapid, convenient, simpler and more practical.

The invention relates to a gene transient expression method with in-vivo jujube fruits as materials. The method comprises the following steps of performing homologous cloning according to sequence information in an NCBI database to obtain a target gene, integrating the target gene into a plant overexpression plasmid vector through enzyme digestion-connection, and transferring a recombinant plant vector into agrobacterium GV3101; carrying out shake culture on the agrobacterium in an LB culture medium at 28 DEG C until OD600 reaches 1.0-1.2, centrifuging and collecting bacteria, pouring out theLB culture medium, and resuspending thalli by using a penetrating fluid containing MgCl2, MES and acetosyringone for later use; injecting the agrobacterium penetrating fluid into the in-vivo jujube fruits in the half-red period by using a medical injector; and verifying the function of the target gene by observing the phenotypic changes of the jujube fruits and detecting the expression quantity ofthe target gene and the content of related metabolites. The method avoids the problems of poor repeatability, low conversion rate, long time and the like of stable genetic transformation of ziziphusjujuba mill, can verify the gene function in a short time, is simple and quick, and saves the cost.

The invention relates to an agrobacterium tumefaciens-mediated genetic transformation method for toona ciliata. The method comprises the following steps: taking leaves of toona ciliata as an explant, infecting the explant with a bacterial solution of agrobacterium tumefaciens carrying a plant expression vector; inoculating the infected explant into a co-culture medium, and carrying out co-culture; and carrying out induction culture on the co-cultured explant, wherein the induction culture comprises induction culture of callus, induction culture of adventitious buds, induction culture of buds and induction culture of roots; the bacterial solution contains acetosyringone, and the co-culture medium contains acetosyringone. By adopting the method, agrobacterium tumefaciens-mediated toona ciliata genetic transformation is successfully realized, genetic transformation rate is kept at about 10%, and the method is good in repeatability and stability, suitable for batch seedling culture and beneficial to agricultural industrialization development.

The invention provides an Agrobacterium-mediated leptosphaeria biglobosa genetic transformation method, which belongs to the technical field of genetic transformation of plant pathogenic fungi. The method comprises the following steps: 1) inoculating agrobacterium containing plasmid pCHs-GFP in a LB liquid medium for culture, and then transferring the agrobacterium into a CM liquid medium containing 150-250 [mu]g/mL acetosyringone to obtain agrobacterium bacterial fluid; 2) collecting the conidiospore of the leptosphaeria biglobosa, and mixing the conidiospore with sterile water to prepare a conidiospore suspension having a concentration of (0.5-9)*10<6>/mL; and 3) mixing the agrobacteriumbacteria liquid with the conidiospore suspension, co-cultivating the material for 3-4 days, transferring the material to a screening medium, and screening and culturing the material for 7-15 days to obtain a transformant; The method has high transformation efficiency, low copy and genetic stability.