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Article
15N photo-CIDNP MAS NMR on both photosystems and magnetic field-dependent 13C photo-CIDNP MAS NMR in photosystem II of the diatom Phaeodactylum tricornutum
Diatoms contribute about 20–25% to the global marine productivity and are successful autotrophic players in all aquatic ecosystems, which raises the question whether this performance is caused by differences i...
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Article
Unusual features of the high light acclimation of Chromera velia
In the present study, the high light (HL) acclimation of Chromera velia (Chromerida) was studied. HL-grown cells exhibited an increased cell volume and dry weight compared to cells grown at medium light (ML). The...
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Article
Influence of pH, Mg2+, and lipid composition on the aggregation state of the diatom FCP in comparison to the LHCII of vascular plants
In the present study, the influence of Mg2+ ions and low pH values on the aggregation state of the diatom FCP and the LHCII of vascular plants was studied. In addition, the concentration of thylakoid membrane lip...
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Article
Molecular dynamics of the diatom thylakoid membrane under different light conditions
During the last years significant progress was achieved in unraveling molecular characteristics of the thylakoid membrane of different diatoms. With the present review it is intended to summarize the current k...
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Article
Regulation and function of xanthophyll cycle-dependent photoprotection in algae
The xanthophyll cycle represents one of the important photoprotection mechanisms in plant cells. In the present review, we summarize current knowledge about the violaxanthin cycle of vascular plants, green and...
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Article
Structurally flexible macro-organization of the pigment–protein complexes of the diatom Phaeodactylum tricornutum
By means of circular dichroism (CD) spectroscopy, we have characterized the organization of the photosynthetic complexes of the diatom Phaeodactylum tricornutum at different levels of structural complexity: in in...
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Article
Light regulation of carotenoid biosynthesis in the prasinophycean alga Mantoniella squamata
We have studied carotenoid biosynthesis in the prasinophycean alga Mantoniella squamata, which contains a great variety of carotenoids belonging to both the a- and the ß-carotene (Car) biosyntheses pathways. This...
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Article
Non-photochemical chlorophyll fluorescence quenching and structural rearrangements induced by low pH in intact cells of Chlorella fusca (Chlorophyceae) and Mantoniella squamata (Prasinophyceae)
We have used circular dichroism (CD) spectroscopy and chlorophyll fluorescence induction measurements in order to examine low-pH-induced changes in the chiral macro-organization of the chromophores and in the ...
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Article
Stimulation of the diadinoxanthin cycle by UV-B radiation in the diatom Phaeodactylum tricornutum
In this study we show that the diadinoxanthin cycle in the diatom Phaeodactylum tricornutum is stimulated by mild UV-B radiation. High steady state concentrations of diatoxanthin established during a period of...