摘要: 根据GenBank登录的牡丹ACS基因DNA全长序列(FJ769773),设计一对特异性引物,在优化的PCR扩增体系的基础上,应用高保真DNA聚合酶KOD-Plus从洛阳红牡丹叶片总DNA中扩增出牡丹ACC合成酶基因片段PsACS-4。测序结果表明:克隆序列长970 bp,不包含牡丹ACS基因内含子序列,与目标序列同源性达100%;用SacI和SmaI对重组质粒和空载体pBI121双酶切、连接,将PsACS-4基因片段反身插入到植物表达载体pBI121的35S启动子下游,成功构建了牡丹ACS反义基因植物表达载体。
关键词:
牡丹,
ACC合成酶,
反义植物表达载体
Abstract: According to the DNA full—length sequence of ACC synthase gene fragment of Paeonia suffruticosa (FJ769773)in GenBank database, a pair of specific primers, P1 and P2, were designed and synthesized.Based on the optimized PCR amplification system and high fidelity DNA polymerase KOD—Plus, ACS gene fragment PsACS-4 was successfully amplified from the total DNA which was extracted from leaves of peony cuhivar Luo Yang Hong.Sequencing resuh indicated that the length of PsACS-4 fragment was 970 bp, and the similarity of the sequence of PsACS-4 and the target sequence was 100%.Two sequences alignment analysis revealed that sequence of PsACS-4 didn 7t contain any intron sequence.The recombinant plasmid and the plant expression vector pBll21 were digested with the SacI and Sma I digest enzyme.After the fragment of ACC synthase gene and pBll21 were recovered and ligated, PsACS一4 gene fragment was inserted into 35S promoter downstream of plant expression vector pBll21 reverse in orientation, and an antisense plant expression vector pBll21一anti-PsACS-4 was constructed successfully.
Key words:
Paeonia suffruticosa,
ACS,
Antisense plant expression vector
中图分类号:
范丙友, 高水平, 刘改秀, 史国安, 李嘉珏, 孔祥生. 牡丹ACS基因片段的克隆及反义植物表达载体构建[J]. 华北农学报, 2010, 25(6): 34-37. doi: 10.7668/hbnxb.2010.06.007.
FAN Bing-you, GAO Shui-ping, LIU Gai-xiu, SHI Guo-an, LI Jia-jue, KONG Xiang-sheng. Cloning of ACC Synthase Gene from Paeonia suffruticosa and Construction of Antisense Plant Expression Vector[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2010, 25(6): 34-37. doi: 10.7668/hbnxb.2010.06.007.