Primer pair and method for identifying hericium erinaceus houjie No.2 or large hericium erinaceus
A technology of Hericium erinaceus and primer pairs, applied in the direction of microorganism-based methods, biochemical equipment and methods, microorganisms, etc., can solve the problems of complex PCR amplification patterns, unsuitable for species identification, low specificity, etc., and achieve repeatability Good, short detection time, high specificity
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Embodiment 1
[0031] An exploratory study was carried out on the molecular identification of 15 main species of Hericium erinaceus using SRAP molecular marker technology. Extract the hyphae genome DNA of each Hericium erinaceus species as a template, carry out PCR amplification with a large number of SRAP random primer pairs, and detect the amplified products by agarose gel electrophoresis, and finally screen to obtain differential bands (only Hericium erinaceus L. A pair of primers for No. 2 and Hericium erinaceus but not for other varieties). The differential band was recovered by gel cutting, then connected to the cloning vector and sent for sequencing. The size of the obtained DNA fragment was 620bp, and its base sequence was shown in SEQIDNo.1. The DNA fragment was Houjie 2 and Big Hericium Share specific DNA segments.
[0032] A primer pair was designed for the specific DNA fragment shared by Houjie 2 and the monkey head. The sequence of the primer pair is:
[0033] Upstream primer:...
Embodiment 2
[0038] (1) Extraction of Hericium erinaceus Genomic DNA
[0039] Take 0.03g of Hericium erinaceus mycelium to be tested, add liquid nitrogen to grind thoroughly, use a new rapid plant genome DNA extraction kit (DP3111, BioTeke, Beijing BioTeke Biotechnology Co., Ltd.) to extract genomic DNA, and obtain improved varieties of Hericium erinaceus Genomic DNA crude extract. The integrity, purity and concentration of the obtained crude genomic DNA were detected by agarose gel electrophoresis and a DNA / RNA UV spectrophotometer (Nanodrop Technologies, USA). DNA samples with OD260 / OD280>1.8 were used for subsequent PCR amplification. DNA extracts were stored in a -20°C refrigerator for later use.
[0040] (2) PCR amplification
[0041]Composition of PCR reaction solution: 2×PowerTaqPCRMasterMix 10μL, 10μM upstream and downstream specific primer pairs 1.5μL each, 20ng / μL template DNA 3μL, ddH 2 04 μL.
[0042] The amplification reaction was carried out on a LifeECO amplification in...
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