Zusammenfassung: | |
Many photosynthetic organisms have developed inorganic carbon (Ci) concentrating mechanisms (CCMs) that increase the CO 2 concentration within the vicinity of ribulose-1,5-bisphosphate carboxylase/oxygenase (RubisCO). Several CCMs, such as four carbon (C4) and crassulacean acid metabolism (CAM), bicarbonate accumulation systems and capsular structures around RubisCO have been described in great detail. These systems are believed to have evolved several times as mechanisms that acclimate organisms to unfavourable growth conditions. Based on recent experimental evidence we propose the occurrence of another more general CCM system present in all plants. This basal CCM (bCCM) is supposed to be composed of mitochondrial carbonic anhydrases (a β-type carbonic anhydrase and the γ-type carbonic anhydrase domain of the mitochondrial NADH dehydrogenase complex) and probably further unknown components. The bCCM is proposed to reduce leakage of CO 2 from plant cells and allow efficient recycling of mitochondrial CO 2 for carbon fixation in chloroplasts. © 2012 Elsevier Ireland Ltd.
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Lizenzbestimmungen: | Es gilt deutsches Urheberrecht. Das Dokument darf zum eigenen Gebrauch kostenfrei genutzt, aber nicht im Internet bereitgestellt oder an Außenstehende weitergegeben werden. |
Publikationstyp: | Article |
Publikationsstatus: | acceptedVersion |
Erstveröffentlichung: | 2012 |
Schlagwörter (englisch): | Carbon concentrating mechanism, Green algae, Mitochondria, Plant, carbon, carbon dioxide, carbonate dehydratase, reduced nicotinamide adenine dinucleotide dehydrogenase, ribulosebisphosphate carboxylase, biological model, chloroplast, metabolism, mitochondrion, photosynthesis, physiology, plant, plant cell, review, Carbon, Carbon Dioxide, Carbonic Anhydrases, Chloroplasts, Mitochondria, Models, Biological, NADH Dehydrogenase, Photosynthesis, Plant Cells, Plants, Ribulose-Bisphosphate Carboxylase, Chlorophyta, Crassulaceae |
Fachliche Zuordnung (DDC): | 580 | Pflanzen (Botanik), 570 | Biowissenschaften, Biologie |
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