56 results about "Monokaryon" patented technology

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 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 discloses a two-step inoculation method for increasing the fruiting body yield of Cordyceps militaris. The method comprises first inoculating the monokaryotic strain of Cordyceps militaris on the culture medium of Cordyceps militaris and cultivating it for a period of time; Inoculate the Cordyceps militaris monokaryon, heterokaryon or homokaryon strains of the opposite mating type gene of the inoculated monokaryotic strain to the culture of Cordyceps militaris inoculated for the first time, and continue to cultivate until the fruiting body of Cordyceps militaris is harvested . The two-step inoculation method adopted in the present invention can not only reduce the impact of strain degeneration caused by karyotype changes in large-scale production, but also greatly improve the biotransformation rate of the fruiting body of Cordyceps militaris, so the biological yield of the fruiting body of Cordyceps militaris can be effectively improved, The invention is an important innovation in the field of edible fungus strain inoculation.

The invention discloses a method utilizing acidic ionic liquid in catalyzing and synthesizing diphenolic acid and / or diphenolic acid ester. The method comprises heating and stirring 1-100 parts of the acidic ionic liquid, 1-200 parts of levulinic acid and 1-500 parts of phenol for 5-60 hours' reaction under the protection of nitrogen to obtain the diphenolic acid; and continuously adding alcohols into the reacted mixture, stirring and heating the mixture to obtain the corresponding diphenolic acid ester. The acidic ionic liquid utilized in the method is sulfonic acid ion liquid including tertiary amine base monokaryon sulfonic acid ion liquid, imidazolyl monokaryon sulfonic acid ion liquid, pyridyl monokaryon sulfonic acid ion liquid, ditertiary amine base dikaryon sulfonic acid ion liquid, diimidazolyl dikaryon sulfonic acid ion liquid or dipyridyl monokaryon sulfonic acid ion liquid. The method successfully enables the acidic ionic liquid to serve as a catalytic agent to prepare the diphenolic acid and / or the diphenolic acid ester and is simple in preparation process and high in yield. According to the method, the separation of the catalytic agent and the reaction substrate is achieved through a solvent extraction method, and the catalytic agent can be repeatedly used and has no significant inactivation.

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.