Artykuł w czasopiśmie
Brak miniatury
Licencja
CC-BYCC-BY - Uznanie autorstwa
 

Mechanisms shaping the synergism of zeaxanthin and PsbS in photoprotective energy dissipation in the photosynthetic apparatus of plants

Uproszczony widok
cris.lastimport.scopus2024-02-12T20:02:18Z
dc.abstract.enSafe operation of photosynthesis is vital to plants and is ensured by the activity of processes protecting chloroplasts against photo‐damage. The harmless dissipation of excess excitation energy is considered to be the primary photoprotective mechanism and is most effective in the combined presence of PsbS protein and zeaxanthin, a xanthophyll accumulated in strong light as a result of the xanthophyll cycle activity. Here we address the problem of specific molecular mechanisms underlying the synergistic effect of zeaxanthin and PsbS. The experiments were conducted with Arabidopsis thaliana, the wild‐type and the mutants lacking PsbS (npq4) and affected in the xanthophyll cycle (npq1), with the application of molecular spectroscopy and imaging techniques. The results lead to the conclusion that PsbS interferes with the formation of densely packed aggregates of thylakoid membrane proteins, thus allowing easy exchange and incorporation of xanthophyll cycle pigments into such structures. It was found that xanthophylls trapped within supramolecular structures, most likely in the interfacial protein region, determine their photophysical properties. The structures formed in the presence of violaxanthin are characterized by minimized dissipation of excitation energy. In contrast, the structures formed in the presence of zeaxanthin show enhanced excitation quenching, thus protecting the system against photo‐damage.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorKluczyk, Dariusz
dc.contributor.authorReszczyńska, Emilia
dc.contributor.authorGrudziński, Wojciech
dc.contributor.authorSowinski, Karol
dc.contributor.authorLuchowski, Rafał
dc.contributor.authorMaksim, Magdalena
dc.contributor.authorGruszecki, Wiesław
dc.contributor.authorZubik-Duda, Monika
dc.contributor.authorWelc, Renata
dc.contributor.authorNosalewicz, Artur
dc.contributor.authorMazur, Radosław
dc.date.accessioned2024-01-25T11:26:11Z
dc.date.available2024-01-25T11:26:11Z
dc.date.copyright2021-04-29
dc.date.issued2021
dc.description.accesstimeBEFORE_PUBLICATION
dc.description.financePublikacja bezkosztowa
dc.description.versionFINAL_AUTHOR
dc.identifier.doi10.1111/TPJ.15297
dc.identifier.issn0960-7412
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/112202
dc.identifier.weblinkhttps://onlinelibrary.wiley.com/doi/pdf/10.1111/tpj.15297
dc.languageeng
dc.pbn.affiliationbiological sciences
dc.relation.ispartofPlant Journal
dc.rightsCC-BY
dc.sciencecloudnosend
dc.subject.enphotosynthesis
dc.subject.enPsbS
dc.subject.enzeaxanthin
dc.subject.enxanthophyll cycle
dc.subject.enphotoprotection
dc.titleMechanisms shaping the synergism of zeaxanthin and PsbS in photoprotective energy dissipation in the photosynthetic apparatus of plants
dc.typeJournalArticle
dspace.entity.typePublication