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分子植物育种
(
网络版
), 2010
,
8
1
1
Fenzi Zhiwu Yuzhong (Online), 2010, Vol.8, No.1
1
http://mpb.
5th
.sophiapublisher.com 
10
页,第
1
研究报告
Research Report
rolC
基因植物表达载体构建及其对野生蕉的转化
胡春华
,
魏岳荣
,
刘凯
,
邵秀红
,
黄永红
,
易干军
广东省农业科学院果树研究所香蕉研究中心
,
广州
510640
通讯作者及电子邮件
: yiganjun@vip.163.com;
作者
分子植物育种
, 2010
,
8
,
1
doi: 10.5376/mpb.cn.2010.08.001
1
收稿日期:
2010
09
21
接受日期:
2010
10
27
发表日期:
2010
11
06
这是一篇开放阅取的论文,其论文发布和传播接受《
Creative Commons Attribution License
》所有条款。只要对本原作有恰当的引用,版权所有
人允许和同意第三方无条件的使用、传播以及任何媒介的复制或再制作。
建议最佳引用格式:
胡春华等
, 2010,
rolC
基因植物表达载体构建及其对野生蕉的转化
,
分子植物育种
Vol.8 No.1
1
(doi: 10.5376/mpb.cn.2010.08.001
1
)
摘要
本研究利用
Hin
d
Eco
R
从植物表达载体
pBI121
中将
“35S-GUS-NOSt”
片段切下并克隆到植物表达载体
pCAMBIA1301
上,构建成植物表达载体
pCB121
。在此基础上,根据
GenBank
公布的
rolC
序列设计引物,采用
PCR
方法
Ri
质粒中克隆获得
rolC
基因并将其插入到植物表达载体
pCB121
Xba
Sac
位点。利用根癌农杆菌介导,将
rolC
基因转化野生蕉
(
Musa itinerans
Cheesm.)
胚性细胞悬浮系。通过
GUS
组织染色检测、
PCR
RT-PCR
方法对再生苗鉴定,结
果表明
rolC
基因已经成功转入到野生蕉中并获得表达,转
rolC
基因生根能力有所提高。试验结果为下一步将该基因转化香
蕉其它栽培品种提供了技术参考。
关键词
野生蕉
;
rolC
基因
;
植物表达载体构建
;
遗传转化
Construction of plant expression vector of
rolC
gene and its genetic transformation
of wild Banana (
Musa itinerans
Cheesm.)
Hu Chunhua , Wei Yuerong , Liu Kai , Shao Xiuhong , Huang Yonghong , Yi Ganjun
Fruit Research Institute, Guangdong Academy of Agricultural Science, Guangzhou, 510640
Corresponding author, yiganjun@vip.163.com;
Authors
Abstract
In
this research, we excised the fragments containing “35S-GUS-NOSt” from the plant expression vector pBI121 by
using restriction endonucleases
Hin
d
and
Eco
R , and then directionally linked it to the plant expression vector pCAMBIA1301
in the same endonucleases digestion sites. Then we named the rec
o
mbinated binary plasmids as pCB121. Using PCR approach, the
rolC
gene was cloned from Ri plasmid by a pair of primers designed according to the sequence of
rolC
gene released on the GenBank,
and then it was inserted into the site between
Xba
and
Sac
of plasmid vector pCB121. The
rolC
gene was transformed into the
embryogenic cell suspensions of the wild banana via
Agrobacterium
-mediated transformation. The results of selection and
germination procedure, obtaining of regenerated plantlets, histochemical GUS assay, PCR and RT-PCR suggested that the
rolC
gene
was successfully transferred into wild banana. The transgenic plantlets showed higher rooting ability than the non-transgenic plantlet,
which indicated that the
rolC
gene was also expressed in the plantlets. The research would be lay a good foundation for the genetic
transformation of
rolC
gene into a main cultivar of banana and select new germ plasms with dwarf plants and powerful root system.
Keywords
Wild Banana(
Musa itinerans
Cheesm.),
rolC
gene, Construction of plant expression vector, Genetic transformation
研究背景
香蕉
(
Musa
spp.)
属大型草本果树,是一种重要
的热带水果和粮食作物。香蕉根系着生浅,叶柄、
假茎无木质化,叶大易折、果穗长重,很易遭受强
风、台风的危害。我国香蕉产区主要分布在沿海地