Medicinal wild rice gene OobZIP2, and expression vector and construction method thereof
A technology of medicinal wild rice and expression vector, which is applied in the field of medicinal wild rice gene OobZIP2 and its expression vector and construction, and can solve the problems of ineffective utilization of favorable traits, reproductive obstacles and the like
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Embodiment 1
[0050] Example 1: Preparation of the medicinal wild rice gene OobZIP2 target gene
[0051] A medicinal wild rice gene OobZIP2 is prepared through the following steps:
[0052] 1) Extracting medicinal wild rice RNA;
[0053] 2) Synthesis of the first strand of cDNA: use the ZeroBackFastLigationKit kit to synthesize the first strand of cDNA;
[0054] 3) PCR amplification: using the first strand of cDNA as a template, using the upstream primer shown in SEQIDNo.2 and the downstream primer shown in SEQIDNo.3, perform PCR amplification to obtain the target gene band, and recover by gel electrophoresis ;
[0055] SEQ ID No. 2: CCGTCAAATCAAGCACCCC
[0056] SEQ ID No. 3: TTGATATGAACACAGCGAGCC
[0057] Among them, PCR amplification reaction system: 10×PCRBufferforKOD-Plus-Neo5μL; 2mMdNTPs5μL; 25mMMgSO 4 3 μL; upstream primer (10 μM) 1.5 μL, downstream primer (10 μM) 1.5 μL; template 5 μL; KOD-Plus-Neo (1U·μL-1) 1 μL; Autoclaved, distilledwater 28 μL; times;
[0058] The PCR rea...
Embodiment 2
[0061] Embodiment 2: Construction of prokaryotic expression vector of medicinal wild rice gene OobZIP2
[0062] A method for constructing a medicinal wild rice gene OobZIP2 prokaryotic expression vector, comprising the following steps:
[0063] a) PCR amplification: using the target gene recombinant plasmid obtained in Example 1 as a template, using an upstream primer such as SEQIDNo.4 and a downstream primer such as SEQIDNo.5, to perform PCR amplification, and recover by electrophoresis and gel cutting;
[0064] SEQ ID No. 4: C GAGCTC ATGGGGAATGATGAAGC;
[0065] SEQ ID No. 5: ATTT GCGGCCGC CCTTGCGGCTACAGCATCAGTC;
[0066] b) double digestion: use SacI and NotI to perform double digestion on the gel-cut recovery product obtained in step a), and obtain the enzyme-cut gene fragment after gel recovery;
[0067] c) Ligation: the plasmid pet32a(+) was double-enzymatically digested with SacI and NotI, and after recovery from gel cutting, it was ligated with the digested gene...
Embodiment 3
[0072] Embodiment 3: the construction of medicinal wild rice gene OobZIP2 overexpression vector
[0073] A method for constructing a medicinal wild rice gene OobZIP2 expression vector, comprising the following steps:
[0074] a) PCR amplification: with the objective gene recombinant plasmid that obtains in embodiment 1 as template, adopt the upstream primer such as SEQIDNo.6 and the downstream primer as shown in SEQIDNo.7 that have SamI, XbaI restriction site, carry out PCR Amplification, electrophoresis and gel recovery;
[0075] SEQ ID No. 6: TCC CCCGGG ATGGGGAATGATGAAGC;
[0076] SEQ ID No. 7: GC TCTAGA TTACCTTGCGGCTACAGCATCAGTC;
[0077] b) double digestion: use SamI and XbaI to perform double digestion on the gel-cut recovery product obtained in step a), and obtain the enzyme-cut gene fragment after gel recovery;
[0078] c) Ligation: Plasmid pCAMBIA1301 was double digested with SamI and XbaI, after gel cutting and recovery, ligated with the digested gene fragmen...
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