Changes in the LHCI aggregation state during iron repletion in the unicellular red alga Rhodella violacea

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Abstract

Red algae are well suited to study the effects of iron deficiency on light-harvesting complex for photosystem I (LHCI), since they are totally devoid of light-harvesting complex for photosystem II (LHCII). Iron starvation results in a reduction of the pigment content, an increase of the fluorescence yield and a new emission band at 705 nm in the 77 K fluorescence emission spectra. These changes reflect the accumulation of uncoupled, aggregated LHCI in iron-depleted cells. Reconnection of LHCI to de novo synthesized reaction center I (RCI) is the first event, which takes place after iron addition. The changes in the aggregation state of LHCI are likely to occur also in brown and green algae. © 2002 Federation of European Biochemical Societies. Published by Elsevier Science B.V. All rights reserved.

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Doan, J. M., Schoefs, B., Ruban, A. V., & Etienne, A. L. (2003). Changes in the LHCI aggregation state during iron repletion in the unicellular red alga Rhodella violacea. FEBS Letters, 533(1–3), 59–62. https://doi.org/10.1016/S0014-5793(02)03748-1

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