Hydroxyectoine protects Mn-depleted photosystem II against photoinhibition acting as a source of electrons.
Hydroxyectoine
Photoinhibition
Photosystem II
Water-oxidizing complex
Journal
Photosynthesis research
ISSN: 1573-5079
Titre abrégé: Photosynth Res
Pays: Netherlands
ID NLM: 100954728
Informations de publication
Date de publication:
Aug 2019
Aug 2019
Historique:
received:
08
10
2018
accepted:
17
01
2019
pubmed:
1
2
2019
medline:
14
1
2020
entrez:
1
2
2019
Statut:
ppublish
Résumé
In the present study, we have investigated the effect of hydroxyectoine (Ect-OH), a heterocyclic amino acid, on oxygen evolution in photosystem II (PS II) membrane fragments and on photoinhibition of Mn-depleted PS II (apo-WOC-PS II) preparations. The degree of photoinhibition of apo-WOC-PS II preparations was estimated by the loss of the capability of exogenous electron donor (sodium ascorbate) to restore the amplitude of light-induced changes of chlorophyll fluorescence yield (∆F). It was found that Ect-OH (i) stimulates the oxygen-evolving activity of PS II, (ii) accelerates the electron transfer from exogenous electron donors (K
Identifiants
pubmed: 30701483
doi: 10.1007/s11120-019-00617-w
pii: 10.1007/s11120-019-00617-w
doi:
Substances chimiques
Amino Acids, Diamino
0
Photosystem II Protein Complex
0
hydroxyectoine
0
Water
059QF0KO0R
Manganese
42Z2K6ZL8P
Oxygen
S88TT14065
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
165-179Subventions
Organisme : Russian Foundation for Basic Research
ID : 17-00-00201
Organisme : Russian Science Foundation
ID : 14-14-00535
Organisme : Minobrnauki of Russia
ID : AAAA-A17-117030110140-5
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