摘要: 根据拟南芥miR399b茎环序列设计引物,PCR扩增克隆了拟南芥pre-miR399b(precursor miRNA)基因。采用LIC(Ligation-Independent cloning)法将pre-miR399b连接到双元植物表达载体pJG045上,构建成植物表达载体pS-DC2,并用冻融法将其导入根癌农杆菌(Agrobacterium tumefaciens)EHA105中。研究结果为将pre-miR399b基因转化大豆再生植株,鉴定miR399b基因在大豆磷吸收利用中的功能及培育磷高效大豆新品种奠定了基础。
关键词:
拟南芥,
pre-miR399b,
载体构建
Abstract: miR399 could regulate Pi homeostasis, consists of six members(miR399a-f)in Arabidopsis thaliana.Here we cloned pre-miR399b fragment with primers designed according to the stem—loop sequence.The fragement was inserted into the multiple cloning sites of the binary vector pJG045 with Ligation-Independent cloning.The vector was transformed into the Agrobacterium tumefaciens strain EHAl05.It may provide an excellent foundation for functional verification of miR399b in soybean and cultivating high Pi·-efficiency soybean by delivering pre—miR399b gene into soybean.
Key words:
Arabidopsis thaliana,
pre—miR399b,
Vector construction
中图分类号:
孙佃臣, 沙爱华, 单志慧, 陈李淼, 周新安. 拟南芥pre-miR399b植物表达载体的构建[J]. 华北农学报, 2010, 25(6): 30-33. doi: 10.7668/hbnxb.2010.06.006.
SUN Dian-chen, SHA Ai-hua, SHAN Zhi-hui, CHEN Li-miao, ZHOU Xin-an. Construction of A Plant Expression Vector Targeting the Arabidopsis thaliana pre-miR399b Gene[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2010, 25(6): 30-33. doi: 10.7668/hbnxb.2010.06.006.