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Central role for ferritin in the day/night regulation of iron homeostasis in marine phytoplankton

H. Botebol, E. Lesuisse, R. Šuták, C. Six, JC. Lozano, P. Schatt, V. Vergé, A. Kirilovsky, J. Morrissey, T. Léger, JM. Camadro, A. Gueneugues, C. Bowler, S. Blain, FY. Bouget,

. 2015 ; 112 (47) : 14652-7. [pub] 20151109

Jazyk angličtina Země Spojené státy americké

Typ dokumentu časopisecké články, práce podpořená grantem

Perzistentní odkaz   https://www.medvik.cz/link/bmc16009909
E-zdroje Online Plný text

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Odkazy

PubMed 26553998
DOI 10.1073/pnas.1506074112
Knihovny.cz E-zdroje

In large regions of the open ocean, iron is a limiting resource for phytoplankton. The reduction of iron quota and the recycling of internal iron pools are among the diverse strategies that phytoplankton have evolved to allow them to grow under chronically low ambient iron levels. Phytoplankton species also have evolved strategies to cope with sporadic iron supply such as long-term storage of iron in ferritin. In the picophytoplanktonic species Ostreococcus we report evidence from observations both in the field and in laboratory cultures that ferritin and the main iron-binding proteins involved in photosynthesis and nitrate assimilation pathways show opposite diurnal expression patterns, with ferritin being maximally expressed during the night. Biochemical and physiological experiments using a ferritin knock-out line subsequently revealed that this protein plays a central role in the diel regulation of iron uptake and recycling and that this regulation of iron homeostasis is essential for cell survival under iron limitation.

Citace poskytuje Crossref.org

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