Journal
FEBS LETTERS
Volume 590, Issue 8, Pages 1076-1085Publisher
WILEY
DOI: 10.1002/1873-3468.12130
Keywords
Chromera velia; light-harvesting antennae; nonphotochemical quenching; photoprotection; violaxanthin; zeaxanthin
Funding
- Czech Science Foundation [GACR P501-12-G055]
- Leverhulme Trust
- UK Biotechnology and Biological Sciences Research Council
- Royal Society for the Wolfson Research Merit Award
- project Algain [EE2.3.30.0059]
- Czech Ministry of Education, Youth and Sport [MSMT LO1416]
- BBSRC [BB/L019027/1] Funding Source: UKRI
- Biotechnology and Biological Sciences Research Council [BB/L019027/1] Funding Source: researchfish
Ask authors/readers for more resources
Non-photochemical quenching (NPQ) is a photoprotective mechanism in light-harvesting antennae. NPQ is triggered by chloroplast thylakoid lumen acidification and is accompanied by violaxanthin de-epoxidation to zeaxanthin, which further stimulates NPQ. In the present study, we show that violaxanthin can act in the opposite direction to zeaxanthin because an increase in the concentration of violaxanthin reduced NPQ in the light-harvesting antennae of Chromera velia. The correlation overlapped with a similar relationship between violaxanthin and NPQ as observed in isolated higher plant light-harvesting complex II. The data suggest that violaxanthin in C. velia can act as an inhibitor of NPQ, indicating that violaxanthin has to be removed from the vicinity of the protein to reach maximal NPQ.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available