A strong constitutive gene expression system derived from ibAGP1 promoter and its transit peptide

Man Sup Kwak, Mi Joung Oh, Shin Woo Lee, Jeong Sheop Shin, Kyung Hee Paek, Jung Myung Bae

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

To develop a strong constitutive gene expression system, the activities of ibAGP1 promoter and its transit peptide were investigated using transgenic Arabidopsis and a GUS reporter gene. The ibAGP1 promoter directed GUS expression in almost entire tissues including rosette leaf, inflorescence stem, inflorescence, cauline leaf and root, suggesting that the ibAGP1 promoter is a constitutive promoter. GUS expression mediated by ibAGP1 promoter was weaker than that by CaMV35S promoter in all tissue types, but when GUS protein was targeted to plastids with the aid of the ibAGP1 transit peptide, GUS levels increased to higher levels in lamina, petiole and cauline leaf compared to those produced by CaMV35S promoter. The enhancing effect of ibAGP1 transit peptide on the accumulation of foreign protein was tissue-specific; accumulation was high in lamina and inflorescence, but low in root and primary inflorescence stem. The transit peptide effect in the leaves was maintained highly regardless of developmental stages of plants. The ibAGP1 promoter and its transit peptide also directed strong GUS gene expression in transiently expressed tobacco leaves. These results suggest that the ibAGP1 promoter and its transit peptide are a strong constitutive foreign gene expression system for transgenesis of dicot plants.

Original languageEnglish
Pages (from-to)1253-1262
Number of pages10
JournalPlant Cell Reports
Volume26
Issue number8
DOIs
Publication statusPublished - 2007 Aug 1

Fingerprint

promoter regions
peptides
gene expression
inflorescences
leaves
stems
laminae (animals)
Magnoliopsida
reporter genes
leaf blade
plastids
tobacco
proteins
Arabidopsis
developmental stages
genetically modified organisms
tissues

Keywords

  • Constitutive expression
  • Foreign protein accumulation
  • Promoter
  • Transgenesis
  • Transit peptide

ASJC Scopus subject areas

  • Plant Science

Cite this

A strong constitutive gene expression system derived from ibAGP1 promoter and its transit peptide. / Kwak, Man Sup; Oh, Mi Joung; Lee, Shin Woo; Shin, Jeong Sheop; Paek, Kyung Hee; Bae, Jung Myung.

In: Plant Cell Reports, Vol. 26, No. 8, 01.08.2007, p. 1253-1262.

Research output: Contribution to journalArticle

Kwak, Man Sup ; Oh, Mi Joung ; Lee, Shin Woo ; Shin, Jeong Sheop ; Paek, Kyung Hee ; Bae, Jung Myung. / A strong constitutive gene expression system derived from ibAGP1 promoter and its transit peptide. In: Plant Cell Reports. 2007 ; Vol. 26, No. 8. pp. 1253-1262.
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