[Isolation and analysis of a high expression promoter in rice].
The expression of plant gene is controlled by its promoter. The isolation and the function analysis of promoter are important for studying the genetic engineering and the regulation expression of plant genes. In this paper, we cloned a promoter, 0s252, which was predicted to be highly expressed in the stem of rice from the EST database. After the construction of the Os252::GUS expression vector, it was transformed into rice. The integration of transgenes into transgenic rice genome was confirmed through PCR analysis. X-Gluc staining showed that Os252 can promote GUS gene expression in leaf, stem and matured seed. GUS enzyme activities driven by Os252 promoter in leaf and seed are about 190% and 250% of that driven by the 35S promoter. Thus, the Os252 promoter can be applied for rice genetic engineering.
College of Life and Envionment Science, Shanghai Normal University, Shanghai 200234, China.
Xiao-Li
XL
Zhong
Cheng
C
Zhang
Yong-Lan
YL
Cui
Ying-Ji
YJ
Shen
Yong-Ming
YM
Zhang
Zhong-Nan
ZN
Yang
D018506:Gene Expression Regulation, Plant; D012275:Oryza / Q000235:genetics* / Q000378:metabolism; D010940:Plant Proteins / Q000235:genetics; D030821:Plants, Genetically Modified / Q000235:genetics* / Q000378:metabolism; D011401:Promoter Regions, Genetic / Q000235:genetics*
D010940:Plant Proteins