Evidence map›Paper›PMID 24639515›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2014

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

Gergely Nagy, Renáta Ünnep, Ottó Zsiros, Ryutaro Tokutsu, Kenji Takizawa, Lionel Porcar, Lucas Moyet, Dimitris Petroutsos, Győző Garab, Giovanni Finazzi and 1 more

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 54 papers.

0numbers the graph read from it
0cells of the map it votes in
54citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

54 citing papers in PubMed.

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  13. State transition is quiet around pyrenoid and LHCII phosphorylation is not essential for thylakoid deformation inProceedings of the National Academy of Sciences of the United States of America · 2022
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  18. Evolution of the analytical scattering model of liveJournal of applied crystallography · 2021
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors.

Gergely NagyLaboratory for Neutron Scattering, Paul Scherrer Institute, 5232 Villigen PSI, Switzerland.
Renáta Ünnep
Ottó Zsiros
Ryutaro Tokutsu
Kenji Takizawa
Lionel Porcar
Lucas Moyet
Dimitris Petroutsos
Győző Garab
Giovanni Finazzi
Jun Minagawa

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

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.

Indexed as

BiochemistryChlamydomonas reinhardtiiChloroplastsCircular DichroismLight-Harvesting Protein ComplexesModels, BiologicalMutationNeutron DiffractionPhotosynthesisPhotosystem II Protein ComplexPhotosystem I Protein ComplexScattering, Small AngleThylakoidsLight-Harvesting Protein ComplexesPhotosystem II Protein ComplexPhotosystem I Protein Complexgreen algaephotosynthesisthylakoid membrane

Identifiers

PMID24639515
PMCPMC3977285

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.