Evidence map›Paper›PMID 21148414›Full record

ArticlePlant physiology2011

Hemin and magnesium-protoporphyrin IX induce global changes in gene expression in Chlamydomonas reinhardtii.

Björn Voss, Linda Meinecke, Thorsten Kurz, Salim Al-Babili, Christoph F Beck, Wolfgang R Hess

Open access · bronzeAbstract 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 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
2.4field-weighted citation impact, top 11% 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

22 citing papers in PubMed, 51 citations in OpenAlex.

  1. Review
  2. Review
  3. Review
  4. Review
  5. Proteomic analysis of haem-binding protein fromPhilosophical transactions of the Royal Society of London. Series B, Biological sciences · 2020
    Article
  6. Article
  7. Omics Application of Bio-Hydrogen Production Through Green AlgaFrontiers in bioengineering and biotechnology · 2019
    Review
  8. Article
  9. Review
  10. Article
  11. Review
  12. Tetrapyrrole Signaling in Plants.Frontiers in plant science · 2016
    Review
  13. Article
  14. Article
  15. Article
  16. Retrograde bilin signaling enables Chlamydomonas greening and phototrophic survival.Proceedings of the National Academy of Sciences of the United States of America · 2013
    Article
  17. Article
  18. Article
  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

6 authors at 1 institution in 1 country.

Björn VossFaculty of Biology, Institute of Biology III , University of Freiburg, D-79104 Freiburg, Germany.
Linda Meinecke
Thorsten Kurz
Salim Al-Babili
Christoph F Beck
Wolfgang R Hess
University of Freiburg · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Retrograde signaling is a pathway of communication from mitochondria and plastids to the nucleus in the context of cell differentiation, development, and stress response. In Chlamydomonas reinhardtii, the tetrapyrroles magnesium-protoporphyrin IX and heme are only synthesized within the chloroplast, and they have been implicated in the retrograde control of nuclear gene expression in this unicellular green alga. Feeding the two tetrapyrroles to Chlamydomonas cultures was previously shown to transiently induce five nuclear genes, three of which encode the heat shock proteins HSP70A, HSP70B, and HSP70E. In contrast, controversial results exist on the possible role of magnesium-protoporphyrin IX in the repression of genes for light-harvesting proteins in higher plants, raising the question of how important this mode of regulation is. Here, we used genome-wide transcriptional profiling to measure the global impact of these tetrapyrroles on gene regulation and the scope of the response. We identified almost 1,000 genes whose expression level changed transiently but significantly. Among them were only a few genes for photosynthetic proteins but several encoding enzymes of the tricarboxylic acid cycle, heme-binding proteins, stress-response proteins, as well as proteins involved in protein folding and degradation. More than 50% of the latter class of genes was also regulated by heat shock. The observed drastic fold changes at the RNA level did not correlate with similar changes in protein concentrations under the tested experimental conditions. Phylogenetic profiling revealed that genes of putative endosymbiontic origin are not overrepresented among the responding genes. This and the transient nature of changes in gene expression suggest a signaling role of both tetrapyrroles as secondary messengers for adaptive responses affecting the entire cell and not only organellar proteins.

Indexed as

Gene Expression Regulation, PlantChlamydomonas reinhardtiiCluster AnalysisGene Expression ProfilingGenes, PlantHeat-Shock ProteinsHeminOligonucleotide Array Sequence AnalysisPhylogenyPlant ProteinsProtoporphyrinsRNA, PlantHeat-Shock ProteinsHeminmagnesium protoporphyrinPlant Proteinsprotoporphyrin IXProtoporphyrinsRNA, Plant

Identifiers

PMID21148414
PMCPMC3032474
OpenAlexW2090012540

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.