Characterisation of LTR Sequences Involved in the Protoplast Specific Expression of the Tobacco Tnt1 Retrotransposon

Overview

Journal Nucleic Acids Res

Publisher Oxford University Press

Specialty Biochemistry

Date 1993 May 11

PMID 8389038

Citations 31

Authors

J M Casacuberta

M A Grandbastien

Affiliations

Soon will be listed here.

Abstract

The tobacco Tnt1 retrotransposon is the only plant retrotransposon that has been shown to be transcriptionally active, and its transcription is strongly induced when preparing leaf-derived protoplasts. We have analysed in this paper the LTR sequences important for Tnt1 expression in tobacco protoplasts. We show that LTR sequences upstream of the TATA box are sufficient to confer protoplast-dependent induction to a heterologous promoter. We also show that this region contains two short activator elements, and that one of these sequences, BII, interacts with protoplast-specific nuclear factors.

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