SwePub
Sök i LIBRIS databas

  Utökad sökning

WFRF:(Tokutsu Ryutaro)
 

Sökning: WFRF:(Tokutsu Ryutaro) > Chloroplast remodel...

Chloroplast remodeling during state transitions in Chlamydomonas reinhardtii as revealed by noninvasive techniques in vivo

Nagy, Gergely (författare)
Laboratory for Neutron Scattering, Paul Scherrer Institute, 5232 Villigen PSI, Switzerland;;Wigner Research Centre for Physics, Institute for Solid State Physics and Optics, Hungarian Academy of Sciences, H-1525, Budapest, Hungary;;Institut Laue-Langevin, BP 156, F-38042 Grenoble Cedex 9, France;
Ünnep, Renáta (författare)
Wigner Research Centre for Physics, Institute for Solid State Physics and Optics, Hungarian Academy of Sciences, H-1525, Budapest, Hungary;
Zsiros, Ottó (författare)
Institute of Plant Biology, Biological Research Center, Hungarian Academy of Sciences, H-6701, Szeged, Hungary;
visa fler...
Tokutsu, Ryutaro (författare)
Division of Environmental Photobiology, National Institute for Basic Biology, Nishigonaka 38, Myodaiji, Okazaki 444-8585, Japan;;CREST, Japan Science and Technology Agency, 4-1-8 Honcho, Kawaguchi 332-0012, Japan;
Takizawa, Kenji (författare)
Division of Environmental Photobiology, National Institute for Basic Biology, Nishigonaka 38, Myodaiji, Okazaki 444-8585, Japan;
Porcar, Lionel (författare)
Institut Laue-Langevin, BP 156, F-38042 Grenoble Cedex 9, France;
Moyet, Lucas (författare)
Laboratoire de Physiologie Cellulaire et Végétale, Unité Mixte de Recherche 5168, Centre National de la Recherche Scientifique, F-38054 Grenoble Cedex 9, France;;Université Grenoble Alpes, F-38054 Grenoble Cedex 9, France;;Institut National Recherche Agronomique, F-38054 Grenoble Cedex 9, France; and;Institut de Recherche en Sciences et Technologie du Vivant, Commissariat à l'Energie Atomique et aux Energies Alternatives (CEA) Grenoble, F-38054 Grenoble Cedex 9, France
Petroutsos, Dimitris (författare)
Laboratoire de Physiologie Cellulaire et Végétale, Unité Mixte de Recherche 5168, Centre National de la Recherche Scientifique, F-38054 Grenoble Cedex 9, France;;Université Grenoble Alpes, F-38054 Grenoble Cedex 9, France;;Institut National Recherche Agronomique, F-38054 Grenoble Cedex 9, France; and;Institut de Recherche en Sciences et Technologie du Vivant, Commissariat à l'Energie Atomique et aux Energies Alternatives (CEA) Grenoble, F-38054 Grenoble Cedex 9, France
Garab, Győző (författare)
Institute of Plant Biology, Biological Research Center, Hungarian Academy of Sciences, H-6701, Szeged, Hungary;
Finazzi, Giovanni (författare)
Laboratoire de Physiologie Cellulaire et Végétale, Unité Mixte de Recherche 5168, Centre National de la Recherche Scientifique, F-38054 Grenoble Cedex 9, France;;Université Grenoble Alpes, F-38054 Grenoble Cedex 9, France;;Institut National Recherche Agronomique, F-38054 Grenoble Cedex 9, France; and;Institut de Recherche en Sciences et Technologie du Vivant, Commissariat à l'Energie Atomique et aux Energies Alternatives (CEA) Grenoble, F-38054 Grenoble Cedex 9, France
Minagawa, Jun (författare)
Division of Environmental Photobiology, National Institute for Basic Biology, Nishigonaka 38, Myodaiji, Okazaki 444-8585, Japan;;CREST, Japan Science and Technology Agency, 4-1-8 Honcho, Kawaguchi 332-0012, Japan;
visa färre...
 (creator_code:org_t)
2014-03-17
2014
Engelska.
Ingår i: Proceedings of the National Academy of Sciences of the United States of America. - : Proceedings of the National Academy of Sciences (PNAS). - 0027-8424 .- 1091-6490. ; 111:13, s. 5042-5047
Relaterad länk:
https://www.pnas.org...
visa fler...
https://urn.kb.se/re...
https://doi.org/10.1...
visa färre...
  • Tidskriftsartikel (refereegranskat)
Abstract Ämnesord
Stäng  
  • Plants respond to changes in light quality by regulating the absorption capacity of their photosystems. These short-term adaptations use redox-controlled, reversible phosphorylation of the light-harvesting complexes (LHCIIs) to regulate the relative absorption cross-section of the two photosystems (PSs), commonly referred to as state transitions. It is acknowledged that state transitions induce substantial reorganizations of the PSs. However, their consequences on the chloroplast structure are more controversial. Here, we investigate how state transitions affect the chloroplast structure and function using complementary approaches for the living cells of Chlamydomonas reinhardtii. Using small-angle neutron scattering, we found a strong periodicity of the thylakoids in state 1, with characteristic repeat distances of ∼200 Å, which was almost completely lost in state 2. As revealed by circular dichroism, changes in the thylakoid periodicity were paralleled by modifications in the long-range order arrangement of the photosynthetic complexes, which was reduced by ∼20% in state 2 compared with state 1, but was not abolished. Furthermore, absorption spectroscopy reveals that the enhancement of PSI antenna size during state 1 to state 2 transition (∼20%) is not commensurate to the decrease in PSII antenna size (∼70%), leading to the possibility that a large part of the phosphorylated LHCIIs do not bind to PSI, but instead form energetically quenched complexes, which were shown to be either associated with PSII supercomplexes or in a free form. Altogether these noninvasive in vivo approaches allow us to present a more likely scenario for state transitions that explains their molecular mechanism and physiological consequences.

Ämnesord

NATURVETENSKAP  -- Biologi (hsv//swe)
NATURAL SCIENCES  -- Biological Sciences (hsv//eng)

Publikations- och innehållstyp

ref (ämneskategori)
art (ämneskategori)

Hitta via bibliotek

Till lärosätets databas

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy