JOURNAL ARTICLE

[Isolation and analysis of a high expression promoter in rice]

Xiao-Li Zhong, Cheng Zhang, Yong-Lan Cui, Ying-Ji Shen, Yong-Ming Zhang, Zhong-Nan Yang
Sheng Wu Gong Cheng Xue Bao, Chinese Journal of Biotechnology 2007, 23 (5): 836-40
18051861
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.

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