PCR (Polymerase Chain Reaction) detection primer and qualitative detection method and kit for specificity of transgenic rice PA110-15 strain
A qualitative detection and specificity technology, applied in the fields of biochemical equipment and methods, DNA/RNA fragments, recombinant DNA technology, etc., can solve the problems such as PCR detection methods that have not yet been found, and achieve the effect of strong specificity
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Embodiment 1
[0033] Example 1 Acquisition of the Flanking Sequence of the Transgenic Rice PA110-15 Exogenously Inserted Gene
[0034] The target gene for exogenous insertion of transgenic rice PA110-15 with high lysine storage protein gene is LRP gene, and its base sequence is shown in SEQ ID No.1.
[0035] Obtain the integration structure (exogenous insertion gene flanking sequence) by Hi-TAIL PCR
[0036] Step 1: Design upstream and downstream nested primers on the target gene LRP
[0037] LRP-Sp-1TGGTCCTGGAACCATCAAGAAGATC
[0038] LRP-Sp-2ACGATGGACTCCAGTCCGGCCTGCTGGACCTTCTGGAGGCTCTGTT
[0039] LRP-Sp-3CCAAGGGTGATGCTCTCTTCAAGGC
[0040] LRP-Ap1CAGCCTTGAAGAGAGCATCACCCTT
[0041] LRP-Ap2ACGATGGACTCCAGTCCGGCCTGAGTTTCCCAACAGAGCCTCCAGAAGLRP-Ap3GCAAAGCAGCACCACCAACTATGCT
[0042] figure 1 These are the amplification products of the second and third rounds of upstream and downstream Hi-TAIL PCR of the target gene. For analysis of sequencing results, see figure 2 .
[0043] Step 2: Use ...
experiment example 1
[0055] Experimental example 1 Screening of specific primers for qualitative detection of transgenic rice PA110-15 with high lysine storage protein gene and optimization of amplification conditions
[0056] 1. Establishment of transformant-specific detection method
[0057] Nine pairs of transformant-specific primers were designed according to the 3' flanking sequences. The sequence of the junction region between the exogenous insertion vector and the rice genome is amplified, and the size of the amplified product is not less than 100bp.
[0058] A total of 9 pairs of primers were set up, and the primer sequences were as follows:
[0059] Primer 1: The target fragment length is 276bp
[0060] F: TTCGCTCATGTGTTGAGCATAT (SEQ ID No. 3)
[0061] R: GAGATTTGATTTGGCTGATCTAGG (SEQ ID No. 4)
[0062] Primer 2: The target fragment length is 314bp
[0063] F: TTCGCTCATGTGTTGAGCATAT (SEQ ID No. 5)
[0064] R: GTTAAATGTCAACAGCCATCTGC (SEQ ID No. 6)
[0065] Primer 3: The target frag...
experiment example 2
[0090] Experimental example 2 Establishment of specific detection system and reaction program for transgenic rice PA110-15 with high lysine storage protein gene
[0091] 1. Extraction and detection of plant genomic DNA
[0093] 1.1 Preparation of CTAB extraction buffer
[0094] Add 81.7g NaCl and 20g CTAB to 600mL water, after fully dissolved, add 100mL of 1mol / L Tris-HCl (pH7.5) solution, 100mL of 0.5mol / L EDTA (pH8.0) solution, and finally adjust the pH to 8.0 with HCl or NaOH solution , add water to make up to 1000mL. Use after being sterilized under high temperature and high pressure (103.4kPa / 121°C) conditions for 20 minutes.
[0095] 1.2 Extraction method
[0096] a. 100mg sample, fully ground into powder and transferred to a 2ml centrifuge tube;
[0097] b. 1ml of CTAB extraction buffer preheated to 65°C, mix thoroughly, suspend the sample, and mix gently.
[0098] c. Water bath at 65°C for 40 minutes, and mix by inverting several t...
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