56 results about "Monokaryon" patented technology

The invention relates to a method for protecting a lentinus edodes strain through uracil auxotroph.The method comprises the steps that a lentinus edodes uracil auxotroph monokaryon 423-9 and a lentinus edodes monokaryon wild-type strain are crossbred, and single spore isolation is carried out after fruiting to obtain a monokaryon strain; a 5-fluororotic acid screening medium is inoculated with the monokaryon strain for culture, authentication is carried out to obtain a uracil auxotroph monokaryon strain, and then a uracil auxotroph dikaryon strain is obtained by means of mon-mon cross breeding.The method is simple, cost is low, a strain obtained through a conventional strain separation method cannot grow or reproduce normally, and the lentinus edodes strain can be effectively protected through the method.

The invention relates to a process for preparing pyrazine-2-formic acid through metalloporphyrin catalytic oxidation of 2-methylpyrazine. The process comprises the steps of using 2-methylpyrazine as raw materials; using a mixed solution of ethanol or 60% - 90% (by volume) of ethanol and water as a solvent; using monokaryon metalloporphyrin having a structure represented by formula (I) or formula (II) or dicaryon metalloporphyrin having a structure represented by formula (III) as a catalytic agent with the using amount accounting for 0.02% - 0.07% of raw material weight; reacting for 0.5 - 8 hours at a temperature between 80 DEG C - 140 DEG C under the oxygen pressure of 0.5 - 2.5 MPa in the presence of alkali sodium hydroxide or potassium hydroxide; subjecting the reacted product to acidification, filtration, extraction and hot water recrystallization; and obtaining the pyrazine-2-formic acid finally. According to the process, a small amount of the catalytic agent is consumed and the catalytic agent does not require to be separated, the reaction temperature is low, the solvent environment is friendly, and the process has wide application prospects in industry.

The invention discloses a method for identifying or assisting in identifying the mating type of Lepista sordid protoplast monokaryons and special primer pairs IS-818 thereof. The method for identifying or assisting in identifying the mating types of the Lepista sordid protoplast monokaryons comprises the following steps: respectively taking the genome DNA of two Lepista sordid protoplast monokaryons to be identified as templates; performing polymerase chain reaction (PCR) amplification by using PCR primer pairs shown in SEQ ID No. 1 and 2; detecting the size of the obtained PCR products; if the PCR products of the two Lepista sordid protoplast monokaryons to be identified comprise 800 to 1,000 bp of DNA segments or do not comprise 800 to 1,000 bp of DNA segments, the mating types of two Lepista sordid protoplast monokaryons are identical; and if the PCR product of one of the two Lepista sordid protoplast monokaryons to be identified comprises 800 to 1,000 bp of DNA segments and the PCR product of the other one of the two Lepista sordid protoplast monokaryons to be identified does not comprise 800 to 1,000 bp of DNA segments, the mating types of two Lepista sordid protoplast monokaryons are different.

The invention discloses a planting method for increasing the yield of late-maturing litchis. The method comprises the steps that slightly acidic soil which facilities drainage and irrigation, is deep in soil layer and achieves ventilation and light transmitting is selected, large core seeds are immediately sown after being washed and soaked with clear water, and after radical of the seeds is exposed, monokaryon is taken out for seedling growing; from the first ten days of February to the last ten days of March, planting is carried out in windless and warm weather, and the seeds are watered with enough rooting water; regular trimming is carried out, planting water supplementing is carried out to maintain the humidity of the soil, and biological control and chemical control are adopted as auxiliary means for controlling plant diseases and insect pests; 2-3 years after planting, the litchis are harvested from the middle ten days of August to the middle ten days of October after being mature. The late-maturing litchi planting method has the advantages of being low in cost, easy to operate and easy to popularize, increasing the yield and the like, and has good economic benefits.

The invention discloses a method for identifying the mating types of lepista sordida protoplasted monokaryons and a special primer pair IS-879b thereof. The method comprises the following steps of: taking genomes DNA of two lepista sordida protoplasted monokaryons to be identified as templates respectively, performing polymerase chain reaction (PCR) amplification by using a PCR primer pair consisting of two single chains DNA shown as SEQ ID No. 1 and SEQ ID No. 2, and detecting the magnitude of the obtained PCR products, wherein if the PCR products of both the two lepista sordida protoplasted monokaryons to be identified contain or do not contain DNA fragments of 1000bp-1500bp, the mating types of the two lepista sordida protoplasted monokaryons to be identified are identical; and if the PCR product of one protoplasted monokaryon contains the DNA fragments of 1000bp-1500bp and the PCR product of the other one does not contain the DNA fragments of 1000bp-1500bp, the mating types of the two lepista sordida protoplasted monokaryons to be identified are different.

The invention discloses a method for identifying or assisting in identifying the mating types of Lepista sordid protoplast monokaryons and special primer pairs IS-873 thereof. The method for identifying or assisting in identifying the mating types of the Lepista sordid protoplast monokaryons comprises the following steps: respectively taking the genome DNA of two Lepista sordid protoplast monokaryons to be identified as templates; performing polymerase chain reaction (PCR) amplification on by using PCR primer pairs shown in SEQ ID No. 1 and 2; detecting the size of the obtained PCR products; if the PCR products of the two Lepista sordid protoplast monokaryons to be identified comprise 500 to 600 bp of DNA segments or do not comprise 500 to 600 bp of DNA segments, the mating types of two Lepista sordid protoplast monokaryons are identical; and if the PCR product of one of the two Lepista sordid protoplast monokaryons to be identified comprises 500 to 600 bp of DNA segments and the PCR product of the other one of the two Lepista sordid protoplast monokaryons to be identified does not comprise 500 to 600 bp of DNA segments, the mating types of two Lepista sordid protoplast monokaryons are different.

The invention discloses a monocaryon mating type primer set for identifying Shenxiang 215 strains and substantive derivative varieties of shiitake mushrooms, an identifying method and an application,and relates to the technical field of edible mushroom molecular marked auxiliary breeding. The monocaryon mating type primer set specifically comprises 4 pairs of primers. The identifying method specifically comprises the steps of culturing mycelia, performing quick preparation of genomic DNA, performing mating type PCR detection, and determining the result of electrophoresis detection. Compared with a conventional monocaryon mating type identification method, the identifying method disclosed by the invention has the advantages that detection time is shoter and accuracy is higher; and throughthe adoption of the identifying method disclosed by the invention, the identifying time can be greatly shortened, the false detection rate can be reduced, and dicaryon elimination can be realized.

The invention discloses a method for preparing a precocious white needle mushroom strain. In the method, a yellow needle mushroom strain 'gold wire' and a white needle mushroom strain F092 are used as parents; and by using a di-monad hybridization method, the white needle mushroom strain F212-1 is prepared. The method comprises the following steps of separation and identification of a mononuclearbody, hybridization matching, screening of hybrids and construction of a hybrids selfing strain. The white needle mushroom strain prepared by using the method has the following characteristics that afruit body is white and precocious; the root of prostheca has no tomenta; not only are the characters of precocity and no tomenta at the root of the prostheca of a yellow needle mushroom maintained, but also the character that the fruit body of the white needle mushroom is white is maintained; the cultivating time is shortened; and the method is suitable for production in various cultivation technical modes.

The invention discloses a method for identifying the mating types of Lepista sordida protoplast monokaryons and a special primer pair SR-6*6 therefor. The method comprises the following steps: respectively taking genome DNAs (deoxyribonucleic acid) of two Lepista sordida protoplast monokaryons to be identified as templates, performing PCR (polymerase chain reaction) amplification by using a PCR primer pair composed of two single-chain DNAs as shown in SEQ ID NO.1 and SEQ ID NO.2, and detecting the sizes of the obtained PCR products; if both or neither of the PCR products of the two Lepista sordida protoplast monokaryons to be identified contains a DNA segment of 500-800bp, indicating that the mating types of the two Lepista sordida protoplast monokaryons to be identified are the same; and if one of the two contains a DNA segment of 500-800bp and the other does not contain a DNA segment of 500-800bp, indicating that the mating types of the two Lepista sordida protoplast monokaryons to be identified are different.

The invention discloses a method for identification or auxiliary identification of the mating type of the protoplast monokaryon of Lepista sordid and a special primer pair SR-5*16 used therein. The method comprises the following steps: with genome DNAs of the protoplast monokaryon of two to-be-identified Lepista sordid strains as templates respectively, carrying out PCR amplification by using a PCR primer pair as represented by SEQ ID No. 1 and 2; and detecting the size of obtained PCR products, determining that the mating types of the protoplast monokaryon of the two to-be-identified Lepista sordid strains are identical if both PCR products of the protoplast monokaryon of the two Lepista sordid strains contain or do not contain 500 bp to 800 bp DNA fragments, and determining that the mating types of the protoplast monokaryon of the two to-be-identified Lepista sordid strains are different if the PCR product of the protoplast monokaryon of one of the two Lepista sordid strains contains 500 bp to 800 bp DNA fragments while the PCR product of the protoplast monokaryon of the other of the two Lepista sordid strains does not contain 500 bp to 800 bp DNA fragments.

The invention discloses a mutagenization method for Aspergillus oryzae with hereditary stability. The mutagenization method comprises the following steps: filtering mutagenized Aspergillus oryzae suspension by virtue of a sterile membrane, so as to obtain a monokaryon Aspergillus oryzae strain; and further breeding the obtained monokaryon Aspergillus oryzae strain, so as to obtain a monokaryon Aspergillus oryzae mutant strain with hereditary stability. The Aspergillus oryzae strain processed by virtue of the method has good hereditary stability, so that an application value of the Aspergillusoryzae strain can be remarkably increased.

A recombinant mononuclear capsid nucleopolyhedrovirus of bollw orm able to express polyhedron and chitinase fusion protein is prepared through PCR amplification of polyhedron gene HaSNPV and chitinase gene, cloning to carrier pUC19 to configure fusion gene, inserted it in eukaryotic carrier pHaWHL5 to obtain eukaryotic transfer carrier pHaWD6, transfecting insection cell by it along with wild virus DNA, and homologous recombination.

The invention discloses a method and a special primer SR-5*13 for differentiating and auxiliarily differentiating mating types of bioplast monokaryons of lepista sordida (Fr) sings. The method comprises the following steps: genome DNAs of bioplast monokaryons of two lepista sordida (Fr) sings to be differentiated are respectively taken as templates; PCR primers shown by SEQ ID No. 1 and SEQ ID No. 2 are used for PCR increase; the sizes of the obtained PCR products are detected; if the PCR products of the bioplast monokaryons of both the two lepista sordida (Fr) sings to be differentiated contain DNA fragments of 500bp-800bp or don't contain the DNA fragments of 500bp-800bp, the mating types of the bioplast monokaryons of the two lepista sordida (Fr) sings are same; and if the PCR product of the bioplast monokaryon of one of the two lepista sordida (Fr) sings contains DNA fragments of 500bp-800bp, and the PCR product of the bioplast monokaryon of the other of the two lepista sordida (Fr) sings dose not contain the DNA fragments of 500bp-800bp, the mating types of the bioplast monkaryones of the two lepista sordida (Fr) sings are different.

The invention relates to a method for protection of a pleurotus eryngii strain by using uracil auxotrophy, which comprises the following steps of hybridizing a pleurotus eryngii uracil auxotrophy monokaryon NX2-0 with a pleurotus eryngii monokaryon strain, and after fruiting, performing single spore isolation to obtain a monokaryon strain; inoculating the monokaryon strain on a 5-fluororotic acidscreening medium for culture and identification, so as to obtain a uracil auxotrophy monokaryon strain, and then performing mon-mon crossing to obtain a uracil auxotrophy dikaryon strain. The method disclosed by the invention has the advantages of simpleness and low cost, and the strain obtained by the conventional strain isolation method cannot grow and multiply normally, and the pleurotus eryngii strain can be effectively protected.

The invention discloses a method for identifying a mating type of protoplasted monokaryon of lepista sordida and a special primer pair SR-6*4 thereof. The method comprises the following steps of: by taking the genome DNAs of the protoplasted monokaryons of two plants of lepista sordida as templates, respectively, performing PCR (Polymerase Chain Reaction) amplification by using a PCR primer pair composed of two single-stranded DNAs as shown in SEQ ID No.1 and SEQ ID No.2; detecting the sizes of the PCR products obtained; if the PCR products of the protoplasted monokaryons of the two plants of lepista sordida to be identified both contain DNA segments of 500 bp-800 bp or not, indicating that the mating types of the protoplasted monokaryons of the two plants of lepista sordida to be identified are the same; if one plant contains the DNA segments of 500 bp-800 bp while the other plant contains no DNA segment of 500 bp-800 bp, indicating that the mating types of the protoplasted monokaryons of the two plants of lepista sordida to be identified are different.

The invention discloses a method for identifying the protoplast monokaryon mating types of lepista sordida and a special primer pair SR-4*2 thereof. The method comprises the following steps of: with genome DNAs (deoxyribonucleic acids) of the protoplast monokaryons of two plants of lepista sordida to be identified as templates, performing PCR (Polymerase Chain Reaction) amplification by using a PCR primer pair composed of two single chain DNAs as shown in SEQ ID No.1 and SEQ ID No.2, and detecting the sizes of the obtained PCR products; if the PCR products of the protoplast monokaryons of the two plants of lepista sordida to be identified both contain or do not obtain 500 bp-800 bp of DNA segments, indicating that the mating types of the protoplast monokaryons of the two plants of lepista sordida are the same; and if one plant contains 500 bp-800 bp of DNA segments, while the other plant contains no 500 bp-800 bp of DNA segments, indicating that the mating types of the protoplast monokaryons of the two plants of lepista sordida are different.

The invention discloses a method for identifying the mating types of lepista sordida protoplasted monokaryons and a special primer pair SR-2x8 thereof. The method comprises the following steps of: taking genomes DNA of two lepista sordida protoplasted monokaryons to be identified as templates respectively, performing polymerase chain reaction (PCR) amplification by using a PCR primer pair consisting of two single chains DNA shown as SEQ ID No. 1 and SEQ ID No. 2, and detecting the magnitude of the obtained PCR products, wherein if the PCR products of both the two lepista sordida protoplasted monokaryons to be identified contain or do not contain DNA fragments of 300bp-500bp, the mating types of the two lepista sordida protoplasted monokaryons to be identified are identical; and if the PCR product of one protoplasted monokaryon contains the DNA fragments of 300bp-500bp and the PCR product of the other one does not contain the DNA fragments of 300bp-500bp, the mating types of the two lepista sordida protoplasted monokaryons to be identified are different.

The invention discloses primer pairs and kit for identifying the mating type of Coriolopsis trogii protoplast monokaryon and an application of the primer pairs. The invention discloses two primer pairs PMD_1 and PMD_2 for identifying the mating type of the Coriolopsis trogii protoplast monokaryon. According to the invention, genomic DNA of the to-be-identified Coriolopsis trogii protoplast monokaryon is used as a template, the primers PMD_1 and PMD_2 are used for amplification, and the mating type of the Coriolopsis trogii protoplast monokaryon is determined according to the size of a PCR product obtained by detection. The method provided by the invention is simple and easy to implement, shortens the identification time, simplifies the identification steps, has high accuracy, and can be suitable for research in the related fields of genetic breeding, genomics and the like of edible and medicinal fungi, especially Coriolopsis trogii.