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Accumulation of geranylgeranylated chlorophylls in the pigment-protein complexes of Arabidopsis thaliana acclimated to green light: effects on the organization of light-harvesting complex II and photosystem II functions
V. Karlický, Z. Kmecová Materová, I. Kurasová, J. Nezval, M. Štroch, G. Garab, V. Špunda
Language English Country Netherlands
Document type Journal Article
Grant support
19-13637S
Grantová Agentura České Republiky
18-12178S
Grantová Agentura České Republiky
CZ.02.1.01/0.0/0.0/16_019/0000797
Ministerstvo Školství, Mládeže a Tělovýchovy
LM2018123
Ministerstvo Školství, Mládeže a Tělovýchovy
K 128679
Hungarian Scientific Research Fund
- MeSH
- Adaptation, Ocular physiology MeSH
- Arabidopsis metabolism MeSH
- Chlorophyll metabolism MeSH
- Photosystem II Protein Complex metabolism MeSH
- Prenylation MeSH
- Light-Harvesting Protein Complexes metabolism MeSH
- Publication type
- Journal Article MeSH
Light quality significantly influences plant metabolism, growth and development. Recently, we have demonstrated that leaves of barley and other plant species grown under monochromatic green light (500-590 nm) accumulated a large pool of chlorophyll a (Chl a) intermediates with incomplete hydrogenation of their phytyl chains. In this work, we studied accumulation of these geranylgeranylated Chls a and b in pigment-protein complexes (PPCs) of Arabidopsis plants acclimated to green light and their structural-functional consequences on the photosynthetic apparatus. We found that geranylgeranylated Chls are present in all major PPCs, although their presence was more pronounced in light-harvesting complex II (LHCII) and less prominent in supercomplexes of photosystem II (PSII). Accumulation of geranylgeranylated Chls hampered the formation of PSII and PSI super- and megacomplexes in the thylakoid membranes as well as their assembly into chiral macrodomains; it also lowered the temperature stability of the PPCs, especially that of LHCII trimers, which led to their monomerization and an anomaly in the photoprotective mechanism of non-photochemical quenching. Role of geranylgeranylated Chls in adverse effects on photosynthetic apparatus of plants acclimated to green light is discussed.
Biological Research Center Institute of Plant Biology Temesvári körút 62 6726 Szeged Hungary
Global Change Research Institute Czech Academy of Sciences Bělidla 986 4a 603 00 Brno Czech Republic
References provided by Crossref.org
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