Journal Article

High-Fluence Blue Light Stimulates Transcription from a Higher Plant Chloroplast <i>psbA</i> Promoter Expressed in a Cyanobacterium, <i>Synechococcus</i> (sp. Strain PCC7942)

Nicholas F. Tsinoremas, Alana Kawakami and David A. Christopher

in Plant and Cell Physiology

Published on behalf of Japanese Society of Plant Physiologists

Volume 40, issue 4, pages 448-452
Published in print January 1999 | ISSN: 0032-0781
Published online January 1999 | e-ISSN: 1471-9053 | DOI: http://dx.doi.org/10.1093/oxfordjournals.pcp.a029562
High-Fluence Blue Light Stimulates Transcription from a Higher Plant Chloroplast psbA Promoter Expressed in a Cyanobacterium, Synechococcus (sp. Strain PCC7942)

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High-fluence white and blue light, but not red light, enhanced transcription of the barley chloroplast psbA promoter when heterologously expressed as a lacZ transcriptional fusion in the cyanobacterium, Synechococcus sp. strain PCC7942. Analysis of Arabidopsis thaliana phytochrome mutants, phyAphyB and hy2, indicated that a distinct blue phototransduction pathway stimulates psbA expression. The evolutionary implications of these findings are discussed.

Keywords: Arabidopsis thaliana; Blue light; Chloroplast; Promoter; Synechococcus; Transcription

Journal Article.  0 words. 

Subjects: Biochemistry ; Molecular and Cell Biology ; Plant Sciences and Forestry

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