Journal Article

Photosynthetic Electron Transport Controls Expression of the High Light Inducible Gene in the Cyanobacterium <i>Synechococcus elongatus</i> Strain PCC 7942

Kavitha Salem and Lorraine G. van Waasbergen

in Plant and Cell Physiology

Published on behalf of Japanese Society of Plant Physiologists

Volume 45, issue 5, pages 651-658
Published in print May 2004 | ISSN: 0032-0781
Published online May 2004 | e-ISSN: 1471-9053 | DOI: http://dx.doi.org/10.1093/pcp/pch072
Photosynthetic Electron Transport Controls Expression of the High Light Inducible Gene in the Cyanobacterium Synechococcus elongatus Strain PCC 7942

More Like This

Show all results sharing these subjects:

  • Biochemistry
  • Molecular and Cell Biology
  • Plant Sciences and Forestry

GO

Show Summary Details

Preview

The hliA gene of Synechococcus, encoding a photoprotective high light inducible polypeptide, is up-regulated by high light (HL) or low intensity blue/UV-A light (BL). hliA expression was found to be up-regulated by KCN in low light (LL) (but not in the dark), and up-regulation in HL, BL, and LL (with KCN) was inhibited by 2,5-dibromo-3-methyl-6-isopropyl-benzoquinone. A working hypothesis is proposed whereby up-regulation is in response to the reduced state of cytochrome b6f or a carrier beyond in photosynthesis. Modest up-regulation occurs in LL by treatment with 3-(3,4-dichlorophenyl)-1,1-dimethylurea, but this is related to effects on hliA mRNA stability rather than on transcription.

Keywords: Keywords: Blue/UV-A light — Cyanobacteria — Electron transport control — High intensity light — High light inducible gene — Synechococcus elongatus PCC 7942.; Abbreviations: BL, blue/UV-A light; DCMU, 3-(3,4-dichlorophenyl)-1,1-dimethylurea; DBMIB, 2,5-dibromo-3-methyl-6-isopropyl-benzoquinone; HL, high light; LL, low light.

Journal Article.  5490 words.  Illustrated.

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

Full text: subscription required

How to subscribe Recommend to my Librarian

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.