Evidence map›Paper›PMID 21670225›Full record

ArticlePlant physiology2011

Light history influences the response of the marine cyanobacterium Synechococcus sp. WH7803 to oxidative stress.

Nicolas Blot, Daniella Mella-Flores, Christophe Six, Gildas Le Corguillé, Christophe Boutte, Anne Peyrat, Annabelle Monnier, Morgane Ratin, Priscillia Gourvil, Douglas A Campbell and 1 more

Open access · hybridAbstract read
In one paragraph

Article in Plant physiology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
2.7field-weighted citation impact, top 10% of its field
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

20 citing papers in PubMed, 52 citations in OpenAlex.

  1. Article
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  9. Review
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  13. Shedding new light on viral photosynthesis.Photosynthesis research · 2015
    Review
  14. Article
  15. Article
  16. Review
  17. Article
  18. Sensing and responding to UV-A in cyanobacteria.International journal of molecular sciences · 2012
    Review
  19. Article
  20. Article
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 at 1 institution in 1 country.

Nicolas BlotUPMC-Université Paris 06, Station Biologique, 29680 Roscoff, France.
Daniella Mella-Flores
Christophe Six
Gildas Le Corguillé
Christophe Boutte
Anne Peyrat
Annabelle Monnier
Morgane Ratin
Priscillia Gourvil
Douglas A Campbell
Laurence Garczarek
Centre National de la Recherche Scientifique · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Marine Synechococcus undergo a wide range of environmental stressors, especially high and variable irradiance, which may induce oxidative stress through the generation of reactive oxygen species (ROS). While light and ROS could act synergistically on the impairment of photosynthesis, inducing photodamage and inhibiting photosystem II repair, acclimation to high irradiance is also thought to confer resistance to other stressors. To identify the respective roles of light and ROS in the photoinhibition process and detect a possible light-driven tolerance to oxidative stress, we compared the photophysiological and transcriptomic responses of Synechococcus sp. WH7803 acclimated to low light (LL) or high light (HL) to oxidative stress, induced by hydrogen peroxide (H₂O₂) or methylviologen. While photosynthetic activity was much more affected in HL than in LL cells, only HL cells were able to recover growth and photosynthesis after the addition of 25 μM H₂O₂. Depending upon light conditions and H₂O₂ concentration, the latter oxidizing agent induced photosystem II inactivation through both direct damage to the reaction centers and inhibition of its repair cycle. Although the global transcriptome response appeared similar in LL and HL cells, some processes were specifically induced in HL cells that seemingly helped them withstand oxidative stress, including enhancement of photoprotection and ROS detoxification, repair of ROS-driven damage, and regulation of redox state. Detection of putative LexA binding sites allowed the identification of the putative LexA regulon, which was down-regulated in HL compared with LL cells but up-regulated by oxidative stress under both growth irradiances.

Indexed as

LightAcclimatizationBacterial ProteinsBase SequenceCluster AnalysisElectron TransportGene Expression Regulation, BacterialGenes, BacterialHydrogen PeroxideMolecular Sequence DataMultivariate AnalysisOligonucleotide Array Sequence AnalysisOxidative StressParaquatPhotosynthesisPhotosystem II Protein ComplexBacterial ProteinsHydrogen PeroxideParaquatPhotosystem II Protein Complex

Identifiers

PMID21670225
PMCPMC3149967
OpenAlexW2110500119

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.