liu.seSearch for publications in DiVA
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Role of Thylakoid ATP/ADP Carrier in Photoinhibition and Photoprotection of Photosystem II in Arabidopsis
Linköping University, Department of Physics, Chemistry and Biology. Linköping University, The Institute of Technology.
Linköping University, Department of Clinical and Experimental Medicine, Cell Biology. Linköping University, The Institute of Technology.
National Institute for Marine Science and Technology, France .
University of Turku.
Show others and affiliations
2010 (English)In: PLANT PHYSIOLOGY, ISSN 0032-0889, Vol. 153, no 2, 666-677 p.Article in journal (Refereed) Published
Abstract [en]

The chloroplast thylakoid ATP/ADP carrier (TAAC) belongs to the mitochondrial carrier superfamily and supplies the thylakoid lumen with stromal ATP in exchange for ADP. Here, we investigate the physiological consequences of TAAC depletion in Arabidopsis (Arabidopsis thaliana). We show that the deficiency of TAAC in two T-DNA insertion lines does not modify the chloroplast ultrastructure, the relative amounts of photosynthetic proteins, the pigment composition, and the photosynthetic activity. Under growth light conditions, the mutants initially displayed similar shoot weight, but lower when reaching full development, and were less tolerant to high light conditions in comparison with the wild type. These observations prompted us to study in more detail the effects of TAAC depletion on photoinhibition and photoprotection of the photosystem II (PSII) complex. The steady-state phosphorylation levels of PSII proteins were not affected, but the degradation of the reaction center II D1 protein was blocked, and decreased amounts of CP43-less PSII monomers were detected in the mutants. Besides this, the mutant leaves displayed a transiently higher nonphotochemical quenching of chlorophyll fluorescence than the wild-type leaves, especially at low light. This may be attributed to the accumulation in the absence of TAAC of a higher electrochemical H+ gradient in the first minutes of illumination, which more efficiently activates photoprotective xanthophyll cycle-dependent and independent mechanisms. Based on these results, we propose that TAAC plays a critical role in the disassembly steps during PSII repair and in addition may balance the trans-thylakoid electrochemical H+ gradient storage.

Place, publisher, year, edition, pages
American Society of Plant Biologists , 2010. Vol. 153, no 2, 666-677 p.
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-57386DOI: 10.1104/pp.110.155804ISI: 000278340200030OAI: oai:DiVA.org:liu-57386DiVA: diva2:325570
Available from: 2010-06-18 Created: 2010-06-18 Last updated: 2010-06-18

Open Access in DiVA

No full text

Other links

Publisher's full text

Authority records BETA

Yin, LanLundin, BjörnSpetea Wiklund, Cornelia

Search in DiVA

By author/editor
Yin, LanLundin, BjörnSpetea Wiklund, Cornelia
By organisation
Department of Physics, Chemistry and BiologyThe Institute of TechnologyCell BiologyDivision of cell biology
Engineering and Technology

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 77 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf