TuMV (Turnip Mosaic Virus) high-resistance RNA (Ribonucleic Acid) and an RNAi carrier for encoding RNA
A technology for expressing vectors and encoding genes, which is applied in the field of RNA and RNAi vectors encoding the RNA, and can solve problems such as ineffective effects and environmental pollution
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Embodiment 1
[0050] Embodiment 1, the preparation of RNAi carrier
[0051] (1) Preparation of HC-Pro gene conservative fragment
[0052] Extract the total RNA of the TuMV-C4 strain and reverse transcribe it into cDNA, use the cDNA as a template, and use the following HC-ProF and HC-Pro R (the underlined part is the enzyme cutting site EcoRI, XbaI, KpnI, ClaI) as primers , PCR amplification with high-fidelity enzyme Fastpfu DNA Polymerase:
[0053] HC-Pro F 5'-cg gaattctctaga GTTAGCAAGTTACAGGGTGAC-3';
[0054] HC-Pro R 5'-gg ggtaccatcgat GACGTGATATCCAGTTGACAGT-3'.
[0055] PCR amplification program: 94°C for 5min; 35 cycles of 94°C for 45s, 52°C for 30s, 72°C for 1min; 72°C for 7min.
[0056] The PCR product was purified by agarose electrophoresis and recovered. The obtained PCR product was sequenced to prove that the nucleic acid sequence was correct, and its nucleic acid sequence had the nucleic acid sequence shown in SEQ ID No. 1 in the sequence listing, and its encoded RNA had t...
Embodiment 2
[0072] Example 2, RNA with high resistance to TuMV and functional verification of the RNAi vector encoding the RNA
[0073] (1) Genetic transformation of Arabidopsis and screening of positive seedlings
[0074] The pBBBTu-HC-Pro vector was transformed into Agrobacterium GV3101 (pMP90) by electric shock method, and Arabidopsis was infected by Agrobacterium-mediated inflorescence dipping method. Arabidopsis thaliana to be harvested 0 The generation seeds were sown in culture trays filled with nutrient soil, and placed in an artificial climate chamber at 22°C (day) / 18°C (night) with a photoperiod of 16h (light) / 8h (dark). After the seedlings grow two cotyledons, spray the glufosinate-ammonium herbicide diluted 500 times by volume with water (the glufosinate-ammonium herbicide is a commercial herbicide purchased in the market, and the concentration of glufosinate-ammonium is 200mg / L) , Screen positive seedlings.
[0075] After spraying 2-3 times of glufosinate-ammonium herbicid...
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