151
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Hu P, Lv J, Fu P, Hualing M. Enzymatic characterization of an active NDH complex from Thermosynechococcus elongatus. FEBS Lett 2013; 587:2340-5. [DOI: 10.1016/j.febslet.2013.05.040] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2013] [Revised: 05/02/2013] [Accepted: 05/02/2013] [Indexed: 11/26/2022]
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152
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Grouneva I, Gollan PJ, Kangasjärvi S, Suorsa M, Tikkanen M, Aro EM. Phylogenetic viewpoints on regulation of light harvesting and electron transport in eukaryotic photosynthetic organisms. PLANTA 2013; 237:399-412. [PMID: 22971817 DOI: 10.1007/s00425-012-1744-5] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2012] [Accepted: 08/03/2012] [Indexed: 06/01/2023]
Abstract
The comparative study of photosynthetic regulation in the thylakoid membrane of different phylogenetic groups can yield valuable insights into mechanisms, genetic requirements and redundancy of regulatory processes. This review offers a brief summary on the current understanding of light harvesting and photosynthetic electron transport regulation in different photosynthetic eukaryotes, with a special focus on the comparison between higher plants and unicellular algae of secondary endosymbiotic origin. The foundations of thylakoid structure, light harvesting, reversible protein phosphorylation and PSI-mediated cyclic electron transport are traced not only from green algae to vascular plants but also at the branching point between the "green" and the "red" lineage of photosynthetic organisms. This approach was particularly valuable in revealing processes that (1) are highly conserved between phylogenetic groups, (2) serve a common physiological role but nevertheless originate in divergent genetic backgrounds or (3) are missing in one phylogenetic branch despite their unequivocal importance in another, necessitating a search for alternative regulatory mechanisms and interactions.
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Affiliation(s)
- Irina Grouneva
- Molecular Plant Biology, University of Turku, Tykistökatu 6A, Turku, Finland.
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153
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Blanco NE, Ceccoli RD, Vía MVD, Voss I, Segretin ME, Bravo-Almonacid FF, Melzer M, Hajirezaei MR, Scheibe R, Hanke GT. Expression of the minor isoform pea ferredoxin in tobacco alters photosynthetic electron partitioning and enhances cyclic electron flow. PLANT PHYSIOLOGY 2013; 161:866-79. [PMID: 23370717 PMCID: PMC3561025 DOI: 10.1104/pp.112.211078] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2012] [Accepted: 12/04/2012] [Indexed: 05/07/2023]
Abstract
Ferredoxins (Fds) are ferrosulfoproteins that function as low-potential electron carriers in plants. The Fd family is composed of several isoforms that share high sequence homology but differ in functional characteristics. In leaves, at least two isoforms conduct linear and cyclic photosynthetic electron transport around photosystem I, and mounting evidence suggests the existence of at least partial division of duties between these isoforms. To evaluate the contribution of different kinds of Fds to the control of electron fluxes along the photosynthetic electron transport chain, we overexpressed a minor pea (Pisum sativum) Fd isoform (PsFd1) in tobacco (Nicotiana tabacum) plants. The transplastomic OeFd1 plants exhibited variegated leaves and retarded growth and developmental rates. Photosynthetic studies of these plants indicated a reduction in carbon dioxide assimilation rates, photosystem II photochemistry, and linear electron flow. However, the plants showed an increase in nonphotochemical quenching, better control of excitation pressure at photosystem II, and no evidence of photoinhibition, implying a better dynamic regulation to remove excess energy from the photosynthetic electron transport chain. Finally, analysis of P700 redox status during illumination confirmed that the minor pea Fd isoform promotes enhanced cyclic flow around photosystem I. The two novel features of this work are: (1) that Fd levels achieved in transplastomic plants promote an alternative electron partitioning even under greenhouse light growth conditions, a situation that is exacerbated at higher light intensity measurements; and (2) that an alternative, minor Fd isoform has been overexpressed in plants, giving new evidence of labor division among Fd isoforms.
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Affiliation(s)
- Nicolás E Blanco
- Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, SE 901 87 Umea, Sweden.
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154
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Hertle AP, Blunder T, Wunder T, Pesaresi P, Pribil M, Armbruster U, Leister D. PGRL1 is the elusive ferredoxin-plastoquinone reductase in photosynthetic cyclic electron flow. Mol Cell 2013; 49:511-23. [PMID: 23290914 DOI: 10.1016/j.molcel.2012.11.030] [Citation(s) in RCA: 214] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2011] [Revised: 10/17/2012] [Accepted: 11/29/2012] [Indexed: 01/04/2023]
Abstract
During plant photosynthesis, photosystems I (PSI) and II (PSII), located in the thylakoid membranes of the chloroplast, use light energy to mobilize electron transport. Different modes of electron flow exist. Linear electron flow is driven by both photosystems and generates ATP and NADPH, whereas cyclic electron flow (CEF) is driven by PSI alone and generates ATP only. Two variants of CEF exist in flowering plants, of which one is sensitive to antimycin A (AA) and involves the two thylakoid proteins, PGR5 and PGRL1. However, neither the mechanism nor the site of reinjection of electrons from ferredoxin into the thylakoid electron transport chain during AA-sensitive CEF is known. Here, we show that PGRL1 accepts electrons from ferredoxin in a PGR5-dependent manner and reduces quinones in an AA-sensitive fashion. PGRL1 activity itself requires several redox-active cysteine residues and a Fe-containing cofactor. We therefore propose that PGRL1 is the elusive ferredoxin-plastoquinone reductase (FQR).
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Affiliation(s)
- Alexander P Hertle
- Plant Molecular Biology (Botany), Department Biology I, Ludwig-Maximilians-University Munich, Grosshaderner Strasse 2, 82152 Planegg-Martinsried, Germany
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155
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Leister D, Shikanai T. Complexities and protein complexes in the antimycin A-sensitive pathway of cyclic electron flow in plants. FRONTIERS IN PLANT SCIENCE 2013; 4:161. [PMID: 23750163 PMCID: PMC3664311 DOI: 10.3389/fpls.2013.00161] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2013] [Accepted: 05/09/2013] [Indexed: 05/04/2023]
Affiliation(s)
- Dario Leister
- Department Biology I, Plant Molecular Biology (Botany), Ludwig-Maximilians-University MunichMunich, Germany
- PhotoLab Trentino - A Joint Initiative of the University of Trento (Centre for Integrative Biology) and the Edmund Mach Foundation (Research and Innovation Centre)San Michele all'Adige and Mattarello, Italy
- *Correspondence:
| | - Toshiharu Shikanai
- Department of Botany, Graduate School of Science, Kyoto UniversityKyoto, Japan
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156
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Courteille A, Vesa S, Sanz-Barrio R, Cazalé AC, Becuwe-Linka N, Farran I, Havaux M, Rey P, Rumeau D. Thioredoxin m4 controls photosynthetic alternative electron pathways in Arabidopsis. PLANT PHYSIOLOGY 2013; 161:508-20. [PMID: 23151348 PMCID: PMC3532281 DOI: 10.1104/pp.112.207019] [Citation(s) in RCA: 82] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2012] [Accepted: 11/12/2012] [Indexed: 05/18/2023]
Abstract
In addition to the linear electron flow, a cyclic electron flow (CEF) around photosystem I occurs in chloroplasts. In CEF, electrons flow back from the donor site of photosystem I to the plastoquinone pool via two main routes: one that involves the Proton Gradient Regulation5 (PGR5)/PGRL1 complex (PGR) and one that is dependent of the NADH dehydrogenase-like complex. While the importance of CEF in photosynthesis and photoprotection has been clearly established, little is known about its regulation. We worked on the assumption of a redox regulation and surveyed the putative role of chloroplastic thioredoxins (TRX). Using Arabidopsis (Arabidopsis thaliana) mutants lacking different TRX isoforms, we demonstrated in vivo that TRXm4 specifically plays a role in the down-regulation of the NADH dehydrogenase-like complex-dependent plastoquinone reduction pathway. This result was confirmed in tobacco (Nicotiana tabacum) plants overexpressing the TRXm4 orthologous gene. In vitro assays performed with isolated chloroplasts and purified TRXm4 indicated that TRXm4 negatively controls the PGR pathway as well. The physiological significance of this regulation was investigated under steady-state photosynthesis and in the pgr5 mutant background. Lack of TRXm4 reversed the growth phenotype of the pgr5 mutant, but it did not compensate for the impaired photosynthesis and photoinhibition sensitivity. This suggests that the physiological role of TRXm4 occurs in vivo via a mechanism distinct from direct up-regulation of CEF.
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Affiliation(s)
| | | | - Ruth Sanz-Barrio
- Centre National de la Recherche Scientifique, Unité Mixte de Recherche 7265, Biologie Végétale et Microbiologie Environnementales, 13108 Saint-Paul-lez-Durance, France (A.C., S.V., N.B.-L., M.H., P.R., D.R.); Commissariat à l'Energie Atomique, Institut de Biologie Environnementale et Biotechnologie, Service de Biologie Végétale et Microbiologie Environnementales, Laboratoire d’Ecophysiologie Moléculaire des Plantes, 13108 Saint-Paul-lez-Durance, France (S.V., N.B.-L., M.H., P.R., D.R.); Université Aix-Marseille, 13108 Saint-Paul-lez-Durance, France (A.C., S.V., N.B.-L., M.H., P.R., D.R.); Instituto de Agrobiotecnologia, Universidad Pública de Navarra-Consejo Superior de Investigaciones Científicas-Gobierno de Navarra, 31006 Pamplona, Spain (R.S.-B., I.F.); Institut National de la Recherche Agronomique, Laboratoire des Interactions Plantes-Microorganismes, Unité Mixte de Recherche 441, F-31326 Castanet-Tolosan, France (A.-C.C.); and Centre National de la Recherche Scientifique, Laboratoire des Interactions Plantes-Microorganismes, Unité Mixte de Recherche 2594, F-31326 Castanet-Tolosan, France (A.-C.C.)
| | - Anne-Claire Cazalé
- Centre National de la Recherche Scientifique, Unité Mixte de Recherche 7265, Biologie Végétale et Microbiologie Environnementales, 13108 Saint-Paul-lez-Durance, France (A.C., S.V., N.B.-L., M.H., P.R., D.R.); Commissariat à l'Energie Atomique, Institut de Biologie Environnementale et Biotechnologie, Service de Biologie Végétale et Microbiologie Environnementales, Laboratoire d’Ecophysiologie Moléculaire des Plantes, 13108 Saint-Paul-lez-Durance, France (S.V., N.B.-L., M.H., P.R., D.R.); Université Aix-Marseille, 13108 Saint-Paul-lez-Durance, France (A.C., S.V., N.B.-L., M.H., P.R., D.R.); Instituto de Agrobiotecnologia, Universidad Pública de Navarra-Consejo Superior de Investigaciones Científicas-Gobierno de Navarra, 31006 Pamplona, Spain (R.S.-B., I.F.); Institut National de la Recherche Agronomique, Laboratoire des Interactions Plantes-Microorganismes, Unité Mixte de Recherche 441, F-31326 Castanet-Tolosan, France (A.-C.C.); and Centre National de la Recherche Scientifique, Laboratoire des Interactions Plantes-Microorganismes, Unité Mixte de Recherche 2594, F-31326 Castanet-Tolosan, France (A.-C.C.)
| | - Noëlle Becuwe-Linka
- Centre National de la Recherche Scientifique, Unité Mixte de Recherche 7265, Biologie Végétale et Microbiologie Environnementales, 13108 Saint-Paul-lez-Durance, France (A.C., S.V., N.B.-L., M.H., P.R., D.R.); Commissariat à l'Energie Atomique, Institut de Biologie Environnementale et Biotechnologie, Service de Biologie Végétale et Microbiologie Environnementales, Laboratoire d’Ecophysiologie Moléculaire des Plantes, 13108 Saint-Paul-lez-Durance, France (S.V., N.B.-L., M.H., P.R., D.R.); Université Aix-Marseille, 13108 Saint-Paul-lez-Durance, France (A.C., S.V., N.B.-L., M.H., P.R., D.R.); Instituto de Agrobiotecnologia, Universidad Pública de Navarra-Consejo Superior de Investigaciones Científicas-Gobierno de Navarra, 31006 Pamplona, Spain (R.S.-B., I.F.); Institut National de la Recherche Agronomique, Laboratoire des Interactions Plantes-Microorganismes, Unité Mixte de Recherche 441, F-31326 Castanet-Tolosan, France (A.-C.C.); and Centre National de la Recherche Scientifique, Laboratoire des Interactions Plantes-Microorganismes, Unité Mixte de Recherche 2594, F-31326 Castanet-Tolosan, France (A.-C.C.)
| | - Immaculada Farran
- Centre National de la Recherche Scientifique, Unité Mixte de Recherche 7265, Biologie Végétale et Microbiologie Environnementales, 13108 Saint-Paul-lez-Durance, France (A.C., S.V., N.B.-L., M.H., P.R., D.R.); Commissariat à l'Energie Atomique, Institut de Biologie Environnementale et Biotechnologie, Service de Biologie Végétale et Microbiologie Environnementales, Laboratoire d’Ecophysiologie Moléculaire des Plantes, 13108 Saint-Paul-lez-Durance, France (S.V., N.B.-L., M.H., P.R., D.R.); Université Aix-Marseille, 13108 Saint-Paul-lez-Durance, France (A.C., S.V., N.B.-L., M.H., P.R., D.R.); Instituto de Agrobiotecnologia, Universidad Pública de Navarra-Consejo Superior de Investigaciones Científicas-Gobierno de Navarra, 31006 Pamplona, Spain (R.S.-B., I.F.); Institut National de la Recherche Agronomique, Laboratoire des Interactions Plantes-Microorganismes, Unité Mixte de Recherche 441, F-31326 Castanet-Tolosan, France (A.-C.C.); and Centre National de la Recherche Scientifique, Laboratoire des Interactions Plantes-Microorganismes, Unité Mixte de Recherche 2594, F-31326 Castanet-Tolosan, France (A.-C.C.)
| | - Michel Havaux
- Centre National de la Recherche Scientifique, Unité Mixte de Recherche 7265, Biologie Végétale et Microbiologie Environnementales, 13108 Saint-Paul-lez-Durance, France (A.C., S.V., N.B.-L., M.H., P.R., D.R.); Commissariat à l'Energie Atomique, Institut de Biologie Environnementale et Biotechnologie, Service de Biologie Végétale et Microbiologie Environnementales, Laboratoire d’Ecophysiologie Moléculaire des Plantes, 13108 Saint-Paul-lez-Durance, France (S.V., N.B.-L., M.H., P.R., D.R.); Université Aix-Marseille, 13108 Saint-Paul-lez-Durance, France (A.C., S.V., N.B.-L., M.H., P.R., D.R.); Instituto de Agrobiotecnologia, Universidad Pública de Navarra-Consejo Superior de Investigaciones Científicas-Gobierno de Navarra, 31006 Pamplona, Spain (R.S.-B., I.F.); Institut National de la Recherche Agronomique, Laboratoire des Interactions Plantes-Microorganismes, Unité Mixte de Recherche 441, F-31326 Castanet-Tolosan, France (A.-C.C.); and Centre National de la Recherche Scientifique, Laboratoire des Interactions Plantes-Microorganismes, Unité Mixte de Recherche 2594, F-31326 Castanet-Tolosan, France (A.-C.C.)
| | - Pascal Rey
- Centre National de la Recherche Scientifique, Unité Mixte de Recherche 7265, Biologie Végétale et Microbiologie Environnementales, 13108 Saint-Paul-lez-Durance, France (A.C., S.V., N.B.-L., M.H., P.R., D.R.); Commissariat à l'Energie Atomique, Institut de Biologie Environnementale et Biotechnologie, Service de Biologie Végétale et Microbiologie Environnementales, Laboratoire d’Ecophysiologie Moléculaire des Plantes, 13108 Saint-Paul-lez-Durance, France (S.V., N.B.-L., M.H., P.R., D.R.); Université Aix-Marseille, 13108 Saint-Paul-lez-Durance, France (A.C., S.V., N.B.-L., M.H., P.R., D.R.); Instituto de Agrobiotecnologia, Universidad Pública de Navarra-Consejo Superior de Investigaciones Científicas-Gobierno de Navarra, 31006 Pamplona, Spain (R.S.-B., I.F.); Institut National de la Recherche Agronomique, Laboratoire des Interactions Plantes-Microorganismes, Unité Mixte de Recherche 441, F-31326 Castanet-Tolosan, France (A.-C.C.); and Centre National de la Recherche Scientifique, Laboratoire des Interactions Plantes-Microorganismes, Unité Mixte de Recherche 2594, F-31326 Castanet-Tolosan, France (A.-C.C.)
| | - Dominique Rumeau
- Centre National de la Recherche Scientifique, Unité Mixte de Recherche 7265, Biologie Végétale et Microbiologie Environnementales, 13108 Saint-Paul-lez-Durance, France (A.C., S.V., N.B.-L., M.H., P.R., D.R.); Commissariat à l'Energie Atomique, Institut de Biologie Environnementale et Biotechnologie, Service de Biologie Végétale et Microbiologie Environnementales, Laboratoire d’Ecophysiologie Moléculaire des Plantes, 13108 Saint-Paul-lez-Durance, France (S.V., N.B.-L., M.H., P.R., D.R.); Université Aix-Marseille, 13108 Saint-Paul-lez-Durance, France (A.C., S.V., N.B.-L., M.H., P.R., D.R.); Instituto de Agrobiotecnologia, Universidad Pública de Navarra-Consejo Superior de Investigaciones Científicas-Gobierno de Navarra, 31006 Pamplona, Spain (R.S.-B., I.F.); Institut National de la Recherche Agronomique, Laboratoire des Interactions Plantes-Microorganismes, Unité Mixte de Recherche 441, F-31326 Castanet-Tolosan, France (A.-C.C.); and Centre National de la Recherche Scientifique, Laboratoire des Interactions Plantes-Microorganismes, Unité Mixte de Recherche 2594, F-31326 Castanet-Tolosan, France (A.-C.C.)
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157
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Trouillard M, Shahbazi M, Moyet L, Rappaport F, Joliot P, Kuntz M, Finazzi G. Kinetic properties and physiological role of the plastoquinone terminal oxidase (PTOX) in a vascular plant. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2012; 1817:2140-8. [DOI: 10.1016/j.bbabio.2012.08.006] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2012] [Revised: 08/24/2012] [Accepted: 08/29/2012] [Indexed: 10/27/2022]
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158
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Nishikawa Y, Yamamoto H, Okegawa Y, Wada S, Sato N, Taira Y, Sugimoto K, Makino A, Shikanai T. PGR5-Dependent Cyclic Electron Transport Around PSI Contributes to the Redox Homeostasis in Chloroplasts Rather Than CO2 Fixation and Biomass Production in Rice. ACTA ACUST UNITED AC 2012; 53:2117-26. [DOI: 10.1093/pcp/pcs153] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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159
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Ueda M, Kuniyoshi T, Yamamoto H, Sugimoto K, Ishizaki K, Kohchi T, Nishimura Y, Shikanai T. Composition and physiological function of the chloroplast NADH dehydrogenase-like complex in Marchantia polymorpha. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2012; 72:683-93. [PMID: 22862786 DOI: 10.1111/j.1365-313x.2012.05115.x] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
The chloroplast NADH dehydrogenase-like (NDH) complex mediates cyclic electron transport and chloro-respiration and consists of five sub-omplexes, which in angiosperms further associate with photosystem I (PSI) to form a super-complex. In Marchantia polymorpha, 11 plastid-encoded subunits and all the nuclear-encoded subunits of the A, B, membrane and ferredoxin-binding sub-complexes are conserved. However, it is unlikely that the genome of this liverwort encodes Lhca5 and Lhca6, both of which mediate NDH-PSI super-complex formation. It is also unlikely that the subunits of the lumen sub-complex, PnsL1-L4, are encoded by the genome. Consistent with this in silico prediction, the results of blue-native gel electrophoresis showed that NDH subunits were detected in a protein complex with lower molecular mass in Marchantia than the NDH-PSI super-complex in Arabidopsis. Using the plastid transformation technique, we knocked out the ndhB gene in Marchantia. Although the wild-type genome copies were completely segregated out, the ΔndhB lines grew like the wild-type photoautotrophically. A post-illumination transient increase in chlorophyll fluorescence, which reflects NDH activity in vivo in angiosperms, was absent in the thalli of the ΔndhB lines. In ruptured chloroplasts, antimycin A-insensitive, and ferredoxin-dependent plastoquinone reduction was impaired, suggesting that chloroplast NDH mediates similar electron transport in Marchantia and Arabidopsis, despite its possible difference in structure. As in angiosperms, linear electron transport was not strongly affected in the ΔndhB lines. However, the plastoquinone pool was slightly more reduced at low light intensity, suggesting that chloroplast NDH functions in redox balancing of the inter system, especially under low light conditions.
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Affiliation(s)
- Minoru Ueda
- Department of Botany, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan CREST, Japan
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160
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Ueda T, Nomoto N, Koga M, Ogasa H, Ogawa Y, Matsumoto M, Stampoulis P, Sode K, Terasawa H, Shimada I. Structural basis of efficient electron transport between photosynthetic membrane proteins and plastocyanin in spinach revealed using nuclear magnetic resonance. THE PLANT CELL 2012; 24:4173-86. [PMID: 23032988 PMCID: PMC3517244 DOI: 10.1105/tpc.112.102517] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2012] [Revised: 09/01/2012] [Accepted: 09/14/2012] [Indexed: 05/29/2023]
Abstract
In the photosynthetic light reactions of plants and cyanobacteria, plastocyanin (Pc) plays a crucial role as an electron carrier and shuttle protein between two membrane protein complexes: cytochrome b(6)f (cyt b(6)f) and photosystem I (PSI). The rapid turnover of Pc between cyt b(6)f and PSI enables the efficient use of light energy. In the Pc-cyt b(6)f and Pc-PSI electron transfer complexes, the electron transfer reactions are accomplished within <10(-4) s. However, the mechanisms enabling the rapid association and dissociation of Pc are still unclear because of the lack of an appropriate method to study huge complexes with short lifetimes. Here, using the transferred cross-saturation method, we investigated the residues of spinach (Spinacia oleracea) Pc in close proximity to spinach PSI and cyt b(6)f, in both the thylakoid vesicle-embedded and solubilized states. We demonstrated that the hydrophobic patch residues of Pc are in close proximity to PSI and cyt b(6)f, whereas the acidic patch residues of Pc do not form stable salt bridges with either PSI or cyt b(6)f, in the electron transfer complexes. The transient characteristics of the interactions on the acidic patch facilitate the rapid association and dissociation of Pc.
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Affiliation(s)
- Takumi Ueda
- Graduate School of Pharmaceutical Sciences, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
- Japan Biological Informatics Consortium, Koto-ku, Tokyo 135-0064, Japan
| | - Naoko Nomoto
- Graduate School of Pharmaceutical Sciences, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
- Japan Biological Informatics Consortium, Koto-ku, Tokyo 135-0064, Japan
| | - Masamichi Koga
- Graduate School of Pharmaceutical Sciences, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Hiroki Ogasa
- Graduate School of Pharmaceutical Sciences, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Yuuta Ogawa
- Graduate School of Pharmaceutical Sciences, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Masahiko Matsumoto
- Graduate School of Pharmaceutical Sciences, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
- Japan Biological Informatics Consortium, Koto-ku, Tokyo 135-0064, Japan
| | - Pavlos Stampoulis
- Graduate School of Pharmaceutical Sciences, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
- Japan Biological Informatics Consortium, Koto-ku, Tokyo 135-0064, Japan
| | - Koji Sode
- Department of Biotechnology, Graduate School of Engineering, Tokyo University of Agriculture and Technology, Koganei-shi, Tokyo 184-8588, Japan
| | - Hiroaki Terasawa
- Graduate School of Pharmaceutical Sciences, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Ichio Shimada
- Graduate School of Pharmaceutical Sciences, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
- Biological Information Research Center, National Institute of Advanced Industrial Science and Technology, Koto-ku, Tokyo 135-0064, Japan
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161
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Serrot PH, Sabater B, Martín M. Activity, polypeptide and gene identification of thylakoid Ndh complex in trees: potential physiological relevance of fluorescence assays. PHYSIOLOGIA PLANTARUM 2012; 146:110-20. [PMID: 22324908 PMCID: PMC3457125 DOI: 10.1111/j.1399-3054.2012.01598.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Three evergreen (Laurus nobilis, Viburnum tinus and Thuja plicata) and two autumnal abscission deciduous trees (Cydonia oblonga and Prunus domestica) have been investigated for the presence (zymogram and immunodetection) and functionality (post-illumination chlorophyll fluorescence) of the thylakoid Ndh complex. The presence of encoding ndh genes has also been investigated in T. plicata. Western assays allowed tentative identification of zymogram NADH dehydrogenase bands corresponding to the Ndh complex after native electrophoresis of solubilized fractions from L. nobilis, V. tinus, C. oblonga and P. domestica leaves, but not in those of T. plicata. However, Ndh subunits were detected after SDS-PAGE of thylakoid solubilized proteins of T. plicata. The leaves of the five plants showed the post-illumination chlorophyll fluorescence increase dependent on the presence of active Ndh complex. The fluorescence increase was higher in autumn in deciduous, but not in evergreen trees, which suggests that the thylakoid Ndh complex could be involved in autumnal leaf senescence. Two ndhB genes were sequenced from T. plicata that differ at the 350 bp 3' end sequence. Comparison with the mRNA revealed that ndhB genes have a 707-bp type II intron between exons 1 (723 bp) and 2 (729 bp) and that the UCA 259th codon is edited to UUA in mRNA. Phylogenetically, the ndhB genes of T. plicata group close to those of Metasequoia, Cryptomeria, Taxodium, Juniperus and Widdringtonia in the cupresaceae branch and are 5' end shortened by 18 codons with respect to that of angiosperms.
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Boussardon C, Salone V, Avon A, Berthomé R, Hammani K, Okuda K, Shikanai T, Small I, Lurin C. Two interacting proteins are necessary for the editing of the NdhD-1 site in Arabidopsis plastids. THE PLANT CELL 2012; 24:3684-94. [PMID: 23001034 PMCID: PMC3480295 DOI: 10.1105/tpc.112.099507] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
After transcription, mRNA editing in angiosperm chloroplasts and mitochondria results in the conversion of cytidine to uridine by deamination. Analysis of Arabidopsis thaliana mutants affected in RNA editing have shown that many pentatricopeptide repeat proteins (PPRs) are required for specific cytidine deamination events. PPR proteins have been shown to be sequence-specific RNA binding proteins allowing the recognition of the C to be edited. The C-terminal DYW domain present in many editing factors has been proposed to catalyze C deamination, as it shows sequence similarities with cytidine deaminases in other organisms. However, many editing factors, such as the first to be discovered, CHLORORESPIRATORY REDUCTION4 (CRR4), lack this domain, so its importance has been unclear. Using a reverse genetic approach, we identified DYW1, an RNA editing factor acting specifically on the plastid ndhD-1 editing site recognized by CRR4. Unlike other known editing factors, DYW1 contains no identifiable PPR motifs but does contain a clear DYW domain. We were able to show interaction between CRR4 and DYW1 by bimolecular fluorescence complementation and to reconstitute a functional chimeric CRR4-DYW1 protein complementing the crr4 dyw1double mutant. We propose that CRR4 and DYW1 act together to edit the ndhD-1 site.
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Affiliation(s)
- Clément Boussardon
- Unité de Recherche en Génomique Végétale, Unité Mixte de Recherche, Institut National de la Recherche Agronomique/Université Evry Val d'Essonne/Equipe de Recherche Labellisée, Centre National de la Recherche Scientifique 91057, 91057 Evry cedex, France
- Australian Research Council Centre of Excellence in Plant Energy Biology, University of Western Australia, Crawley, Western Australia 6009, Australia
| | - Véronique Salone
- Unité de Recherche en Génomique Végétale, Unité Mixte de Recherche, Institut National de la Recherche Agronomique/Université Evry Val d'Essonne/Equipe de Recherche Labellisée, Centre National de la Recherche Scientifique 91057, 91057 Evry cedex, France
- Australian Research Council Centre of Excellence in Plant Energy Biology, University of Western Australia, Crawley, Western Australia 6009, Australia
| | - Alexandra Avon
- Unité de Recherche en Génomique Végétale, Unité Mixte de Recherche, Institut National de la Recherche Agronomique/Université Evry Val d'Essonne/Equipe de Recherche Labellisée, Centre National de la Recherche Scientifique 91057, 91057 Evry cedex, France
| | - Richard Berthomé
- Unité de Recherche en Génomique Végétale, Unité Mixte de Recherche, Institut National de la Recherche Agronomique/Université Evry Val d'Essonne/Equipe de Recherche Labellisée, Centre National de la Recherche Scientifique 91057, 91057 Evry cedex, France
| | - Kamel Hammani
- Australian Research Council Centre of Excellence in Plant Energy Biology, University of Western Australia, Crawley, Western Australia 6009, Australia
| | - Kenji Okuda
- Department of Botany, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - Toshiharu Shikanai
- Department of Botany, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - Ian Small
- Australian Research Council Centre of Excellence in Plant Energy Biology, University of Western Australia, Crawley, Western Australia 6009, Australia
| | - Claire Lurin
- Unité de Recherche en Génomique Végétale, Unité Mixte de Recherche, Institut National de la Recherche Agronomique/Université Evry Val d'Essonne/Equipe de Recherche Labellisée, Centre National de la Recherche Scientifique 91057, 91057 Evry cedex, France
- Address correspondence to
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163
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Marutani Y, Yamauchi Y, Kimura Y, Mizutani M, Sugimoto Y. Damage to photosystem II due to heat stress without light-driven electron flow: involvement of enhanced introduction of reducing power into thylakoid membranes. PLANTA 2012; 236:753-61. [PMID: 22526503 DOI: 10.1007/s00425-012-1647-5] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2012] [Accepted: 04/03/2012] [Indexed: 05/20/2023]
Abstract
Under a moderately heat-stressed condition, the photosystems of higher plants are damaged in the dark more easily than they are in the presence of light. To obtain a better understanding of this heat-derived damage mechanism that occurs in the dark, we focused on the involvement of the light-independent electron flow that occurs at 40 °C during the damage. In various plant species, the maximal photochemical quantum yield of photosystem (PS) II (Fv/Fm) decreased as a result of heat treatment in the dark. In the case of wheat, the most sensitive plant species tested, both Fv/Fm and oxygen evolution rapidly decreased by heat treatment at 40 °C for 30 min in the dark. In the damage, specific degradation of D1 protein was involved, as shown by immunochemical analysis of major proteins in the photosystem. Because light canceled the damage to PSII, the light-driven electron flow may play a protective role against PSII damage without light. Light-independent incorporation of reducing power from stroma was enhanced at 40 °C but not below 35 °C. Arabidopsis mutants that have a deficit of enzymes which mediate the incorporation of stromal reducing power into thylakoid membranes were tolerant against heat treatment at 40 °C in the dark, suggesting that the reduction of the plastoquinone pool may be involved in the damage. In conclusion, the enhanced introduction of reducing power from stroma into thylakoid membranes that occurs around 40 °C causes over-reduction of plastoquinone, resulting in the damage to D1 protein under heat stress without linear electron flow.
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Affiliation(s)
- Yoko Marutani
- Laboratory of Functional Phytochemistry, Graduate School of Agricultural Science, Kobe University, Nada-ku, 657-8501, Kobe, Japan
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164
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Peeva VN, Tóth SZ, Cornic G, Ducruet JM. Thermoluminescence and P700 redox kinetics as complementary tools to investigate the cyclic/chlororespiratory electron pathways in stress conditions in barley leaves. PHYSIOLOGIA PLANTARUM 2012; 144:83-97. [PMID: 21910736 DOI: 10.1111/j.1399-3054.2011.01519.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Cyclic electron flow around photosystem I drives additional proton pumping into the thylakoid lumen, which enhances the protective non-photochemical quenching and increases ATP synthesis. It involves several pathways activated independently. In whole barley leaves, P700 oxidation under far-red illumination and subsequent P700(+) dark reduction kinetics provide a major probe of the activation of cyclic pathways. Two 'intermediate' and 'slow' exponential reduction phases are always observed and they become faster after high light illumination, but dark inactivation of the Benson-Calvin cycle causes the emergence of both a transient in the P700 oxidation and a 'fast' phase in the P700(+) reduction. We investigate here the afterglow (AG) thermoluminescence emission as another tool to detect the activation of cyclic electron pathways from stroma reductants to the acceptor side of photosystem II. This transfer is activated by warming, yielding an AG band at about 45°C. However, treatments that accelerate the 'intermediate' and 'slow' P700(+) reduction phases (brief anoxia, hexose infiltration, fast dehydration of excised leaves) also produced a downshift of this AG band. This pathway ascribable to NADPH dehydrogenase (NDH) would be triggered by a deficit in ATP, while the 'fast' reduction phase corresponding to the ferredoxin plastoquinone reductase pathway is triggered by an overreduction of the photosystem I acceptor pool and is undetected in thermoluminescence. Contrastingly, slow dehydration of unwatered plants did not cause faster reduction of P700(+) nor temperature downshift of the AG band, that is no induction of the NDH pathway, whereas an increased intensity of the AG band indicated a strong NADPH + ATP assimilatory potential.
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Affiliation(s)
- Violeta N Peeva
- Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, G Bonchev Str., Bl. 21, Sofia 1113, Bulgaria
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165
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Peng L, Fukao Y, Fujiwara M, Shikanai T. Multistep assembly of chloroplast NADH dehydrogenase-like subcomplex A requires several nucleus-encoded proteins, including CRR41 and CRR42, in Arabidopsis. THE PLANT CELL 2012; 24:202-14. [PMID: 22274627 PMCID: PMC3289569 DOI: 10.1105/tpc.111.090597] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Chloroplast NADH dehydrogenase-like complex (NDH) mediates photosystem I cyclic electron transport and chlororespiration in thylakoids. Recently, substantial progress has been made in understanding the structure of NDH, but our knowledge of its assembly has been limited. In this study, a series of interactive proteomic analyses identified several stroma-localized factors required for the assembly of a stroma-protruding arm of NDH (subcomplex A). In addition to further characterization of the previously identified CHLORORESPIRATORY REDUCTION1 (CRR1), CRR6, and CRR7, two novel stromal proteins, CRR41 and CRR42, were discovered. Arabidopsis thaliana mutants lacking these proteins are specifically defective in the accumulation of subcomplex A. A total of 10 mutants lacking subcomplex A, including crr27/cpn60β4, which is specifically defective in the folding of NdhH, and four mutants lacking NdhL-NdhO subunits, were extensively characterized. We propose a model for subcomplex A assembly: CRR41, NdhO, and native NdhH, as well as unknown factors, are first assembled to form an NDH subcomplex A assembly intermediate (NAI500). Subsequently, NdhJ, NdhM, NdhK, and NdhI are incorporated into NAI500 to form NAI400. CRR1, CRR6, and CRR42 are involved in this process. CRR7 is likely to be involved in the final step, in which the fully assembled NAI, including NdhN, is inserted into thylakoids.
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Affiliation(s)
- Lianwei Peng
- Department of Botany, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
- Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
| | - Yoichiro Fukao
- Plant Global Educational Project, Graduate School of Biological Sciences, Nara Institute of Science and Technology, Takayama, Ikoma, Nara 630-0101, Japan
| | - Masayuki Fujiwara
- Plant Global Educational Project, Graduate School of Biological Sciences, Nara Institute of Science and Technology, Takayama, Ikoma, Nara 630-0101, Japan
| | - Toshiharu Shikanai
- Department of Botany, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
- Address correspondence to
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166
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Roose JL, Frankel LK, Bricker TM. Developmental defects in mutants of the PsbP domain protein 5 in Arabidopsis thaliana. PLoS One 2011; 6:e28624. [PMID: 22174848 PMCID: PMC3235149 DOI: 10.1371/journal.pone.0028624] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2011] [Accepted: 11/11/2011] [Indexed: 11/25/2022] Open
Abstract
Plants contain an extensive family of PsbP-related proteins termed PsbP-like (PPL) and PsbP domain (PPD) proteins, which are localized to the thylakoid lumen. The founding member of this family, PsbP, is an established component of the Photosystem II (PS II) enzyme, and the PPL proteins have also been functionally linked to other photosynthetic processes. However, the functions of the remaining seven PPD proteins are unknown. To elucidate the function of the PPD5 protein (At5g11450) in Arabidopsis, we have characterized a mutant T-DNA insertion line (SALK_061118) as well as several RNAi lines designed to suppress the expression of this gene. The functions of the photosynthetic electron transfer reactions are largely unaltered in the ppd5 mutants, except for a modest though significant decrease in NADPH dehydrogenase (NDH) activity. Interestingly, these mutants show striking plant developmental and morphological defects. Relative to the wild-type Col-0 plants, the ppd5 mutants exhibit both increased lateral root branching and defects associated with axillary bud formation. These defects include the formation of additional rosettes originating from axils at the base of the plant as well as aerial rosettes formed at the axils of the first few nodes of the shoot. The root-branching phenotype is chemically complemented by treatment with the synthetic strigolactone, GR24. We propose that the developmental defects observed in the ppd5 mutants are related to a deficiency in strigolactone biosynthesis.
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Affiliation(s)
- Johnna L Roose
- Department of Biological Sciences, Biochemistry and Molecular Biology Section, Louisiana State University, Baton Rouge, Louisiana, United States of America.
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167
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Battchikova N, Wei L, Du L, Bersanini L, Aro EM, Ma W. Identification of novel Ssl0352 protein (NdhS), essential for efficient operation of cyclic electron transport around photosystem I, in NADPH:plastoquinone oxidoreductase (NDH-1) complexes of Synechocystis sp. PCC 6803. J Biol Chem 2011; 286:36992-7001. [PMID: 21880717 PMCID: PMC3196108 DOI: 10.1074/jbc.m111.263780] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2011] [Revised: 08/25/2011] [Indexed: 11/06/2022] Open
Abstract
Cyanobacterial NADPH:plastoquinone oxidoreductase, or type I NAD(P)H dehydrogenase, or the NDH-1 complex is involved in plastoquinone reduction and cyclic electron transfer (CET) around photosystem I. CET, in turn, produces extra ATP for cell metabolism particularly under stressful conditions. Despite significant achievements in the study of cyanobacterial NDH-1 complexes during the past few years, the entire subunit composition still remains elusive. To identify missing subunits, we screened a transposon-tagged library of Synechocystis 6803 cells grown under high light. Two NDH-1-mediated CET (NDH-CET)-defective mutants were tagged in the same ssl0352 gene encoding a short unknown protein. To clarify the function of Ssl0352, the ssl0352 deletion mutant and another mutant with Ssl0352 fused to yellow fluorescent protein (YFP) and the His(6) tag were constructed. Immunoblotting, mass spectrometry, and confocal microscopy analyses revealed that the Ssl0352 protein resides in the thylakoid membrane and associates with the NDH-1L and NDH-1M complexes. We conclude that Ssl0352 is a novel subunit of cyanobacterial NDH-1 complexes and designate it NdhS. Deletion of the ssl0352 gene considerably impaired the NDH-CET activity and also retarded cell growth under high light conditions, indicating that NdhS is essential for efficient operation of NDH-CET. However, the assembly of the NDH-1L and NDH-1M complexes and their content in the cells were not affected in the mutant. NdhS contains a Src homology 3-like domain and might be involved in interaction of the NDH-1 complex with an electron donor.
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Affiliation(s)
- Natalia Battchikova
- Department of Biochemistry and Food Chemistry, Molecular Plant Biology, University of Turku, FI-20520 Turku, Finland
| | - Lanzhen Wei
- From the College of Life and Environment Sciences, Shanghai Normal University, Guilin Road 100, Shanghai 200234, China and
| | - Lingyu Du
- From the College of Life and Environment Sciences, Shanghai Normal University, Guilin Road 100, Shanghai 200234, China and
| | - Luca Bersanini
- Department of Biochemistry and Food Chemistry, Molecular Plant Biology, University of Turku, FI-20520 Turku, Finland
| | - Eva-Mari Aro
- Department of Biochemistry and Food Chemistry, Molecular Plant Biology, University of Turku, FI-20520 Turku, Finland
| | - Weimin Ma
- From the College of Life and Environment Sciences, Shanghai Normal University, Guilin Road 100, Shanghai 200234, China and
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168
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Ifuku K, Endo T, Shikanai T, Aro EM. Structure of the chloroplast NADH dehydrogenase-like complex: nomenclature for nuclear-encoded subunits. PLANT & CELL PHYSIOLOGY 2011; 52:1560-8. [PMID: 21785130 DOI: 10.1093/pcp/pcr098] [Citation(s) in RCA: 118] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
The chloroplast NADH dehydrogenase-like complex (NDH) was first discovered based on its similarity to complex I in respiratory electron transport, and is involved in electron transport from photoproduced stromal reductants such as NADPH and ferredoxin to the intersystem plastoqunone pool. However, a recent study suggested that it is a ferredoxin-dependent plastoquinone reductase rather than an NAD(P)H dehydrogenase. Furthermore, recent advances in subunit analysis of NDH have revealed the presence of a novel hydrophilic subcomplex on the stromal side of the thylakoid membrane, as well as an unexpected lumenal subcomplex. This review discusses these new studies on the structure of NDH, and proposes a unified nomenclature for newly discovered NDH subunits.
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Affiliation(s)
- Kentaro Ifuku
- Division of Integrated Life Science, Graduate School of Biostudies, Kyoto University, Sakyo, Kyoto, 606-8502 Japan
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169
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Chloroplast lipid droplet type II NAD(P)H quinone oxidoreductase is essential for prenylquinone metabolism and vitamin K1 accumulation. Proc Natl Acad Sci U S A 2011; 108:14354-9. [PMID: 21844348 DOI: 10.1073/pnas.1104790108] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Lipid droplets are ubiquitous cellular structures in eukaryotes and are required for lipid metabolism. Little is currently known about plant lipid droplets other than oil bodies. Here, we define dual roles for chloroplast lipid droplets (plastoglobules) in energy and prenylquinone metabolism. The prenylquinones--plastoquinone, plastochromanol-8, phylloquinone (vitamin K(1)), and tocopherol (vitamin E)--are partly stored in plastoglobules. This work shows that NAD(P)H dehydrogenase C1 (NDC1) (At5g08740), a type II NAD(P)H quinone oxidoreductase, associates with plastoglobules. NDC1 reduces a plastoquinone analog in vitro and affects the overall redox state of the total plastoquinone pool in vivo by reducing the plastoquinone reservoir of plastoglobules. Finally, NDC1 is required for normal plastochromanol-8 accumulation and is essential for vitamin K(1) production.
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