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Identification of tomato Lhc promoter regions necessary for circadian expression

Identification of tomato Lhc promoter regions necessary for circadian expression Expression of the light-harvesting complex protein genes (Lhc) is under the control of a circadian clock. To dissect the molecular regulatory components of the circadian clock a promoter deletion analysis of four tomato Lhc genes was performed in transgenic tobacco plants. The important 5′-upstream promoter regions are present at different positions relative to the transcription start site of Lhc b11, b12, Lhc a3 and Lhc a4. A short sequence of 47 nucleotides is necessary for conferring circadian Lhc mRNA oscillations. Sequence alignment of the specified promoter regions revealed a novel motif ‘CAANNNNATC’. This motif is conserved in 5′-upstream regions of clock controlled Lhc genes and overlaps with a sequence relevant in phytochrome mediated gene expression. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Plant Molecular Biology Springer Journals

Identification of tomato Lhc promoter regions necessary for circadian expression

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References (31)

Publisher
Springer Journals
Copyright
Copyright © 1998 by Kluwer Academic Publishers
Subject
Life Sciences; Biochemistry, general; Plant Sciences; Plant Pathology
ISSN
0167-4412
eISSN
1573-5028
DOI
10.1023/A:1006094015513
Publisher site
See Article on Publisher Site

Abstract

Expression of the light-harvesting complex protein genes (Lhc) is under the control of a circadian clock. To dissect the molecular regulatory components of the circadian clock a promoter deletion analysis of four tomato Lhc genes was performed in transgenic tobacco plants. The important 5′-upstream promoter regions are present at different positions relative to the transcription start site of Lhc b11, b12, Lhc a3 and Lhc a4. A short sequence of 47 nucleotides is necessary for conferring circadian Lhc mRNA oscillations. Sequence alignment of the specified promoter regions revealed a novel motif ‘CAANNNNATC’. This motif is conserved in 5′-upstream regions of clock controlled Lhc genes and overlaps with a sequence relevant in phytochrome mediated gene expression.

Journal

Plant Molecular BiologySpringer Journals

Published: Oct 6, 2004

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