umu.sePublications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • 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
The Plastid Lipocalin LCNP is Required for Sustained Photoprotective Energy Dissipation in Arabidopsis
Show others and affiliations
2017 (English)In: Plant Cell, Vol. 30, p. 196-208Article in journal (Refereed) Published
Abstract [en]

Light utilization is finely tuned in photosynthetic organisms to prevent cellular damage. The dissipation of excess absorbed light energy, a process termed NPQ, plays an important role in photoprotection. Little is known about the sustained or slowly reversible form(s) of NPQ and whether they are photoprotective, in part due to the lack of mutants. The Arabidopsis thaliana suppressor of quenching1 (soq1) mutant exhibits enhanced sustained NPQ, which we term qH. To identify molecular players involved in qH, we screened for suppressors of soq1 and isolated mutants affecting either chlorophyllide a oxygenase (CAO) or the chloroplastic lipocalin (CHL), now renamed plastid lipocalin (LCNP). Analysis of the mutants confirmed that qH is localized to the peripheral antenna (LHCII) of photosystem II and demonstrated that LCNP is required for qH, either directly (by forming NPQ sites) or indirectly (by modifying the LHCII membrane environment). qH operates under stress conditions such as cold and high light and is photoprotective, as it reduces lipid peroxidation levels. We propose that, under stress conditions, LCNP protects the thylakoid membrane by enabling sustained NPQ in LHCII, thereby preventing singlet oxygen stress.

Place, publisher, year, edition, pages
2017. Vol. 30, p. 196-208
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:umu:diva-144801ISBN: 1532-298X (Electronic) 1040-4651 (Linking) OAI: oai:DiVA.org:umu-144801DiVA, id: diva2:1183511
Note

Malnoe, Alizee Schultink, Alex Shahrasbi, Sanya Rumeau, Dominique Havaux, Michel Niyogi, Krishna K eng 2017/12/14 06:00 Plant Cell. 2017 Dec 12. pii: tpc.17.00536. doi: 10.1105/tpc.17.00536.

Available from: 2018-02-17 Created: 2018-02-17 Last updated: 2018-06-09

Open Access in DiVA

No full text in DiVA

Other links

https://www.ncbi.nlm.nih.gov/pubmed/29233855

Authority records BETA

Malnoë, A.

Search in DiVA

By author/editor
Malnoë, A.
Biological Sciences

Search outside of DiVA

GoogleGoogle Scholar

isbn
urn-nbn

Altmetric score

isbn
urn-nbn
Total: 10 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • 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