Evidence map›Paper›PMID 18245855›Full record

ArticleGenetics2008

Early gene duplication within chloroplastida and its correspondence with relocation of starch metabolism to chloroplasts.

Philippe Deschamps, Hervé Moreau, Alexandra Z Worden, David Dauvillée, Steven G Ball

Erratum issuedOpen access · greenAbstract read
In one paragraph

Article in Genetics, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 34 papers.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed
3.7field-weighted citation impact, top 6% 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

34 citing papers in PubMed, 83 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Starch Synthesis inFrontiers in plant science · 2018
    Article
  9. Bioinformatic andFrontiers in plant science · 2018
    Article
  10. Article
  11. Article
  12. Crystal Structures of theFrontiers in plant science · 2018
    Article
  13. Article
  14. Formation of starch in plant cells.Cellular and molecular life sciences : CMLS · 2016
    Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors at 4 institutions in 2 countries.

Philippe DeschampsUnité de Glycobiologie Structurale et Fonctionnelle, UMR8576 CNRS/USTL, Université des Sciences et Technologies de Lille, 59655 Villeneuve d'Ascq, France.
Hervé Moreau
Alexandra Z Worden
David Dauvillée
Steven G Ball
Centre National de la Recherche Scientifique · FRMonterey Bay Aquarium Research Institute · USObservatoire Océanologique de Banyuls-sur-Mer · FRUnité de Glycobiologie Structurale et Fonctionnelle · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The endosymbiosis event resulting in the plastid of photosynthetic eukaryotes was accompanied by the appearance of a novel form of storage polysaccharide in Rhodophyceae, Glaucophyta, and Chloroplastida. Previous analyses indicated that starch synthesis resulted from the merging of the cyanobacterial and the eukaryotic storage polysaccharide metabolism pathways. We performed a comparative bioinformatic analysis of six algal genome sequences to investigate this merger. Specifically, we analyzed two Chlorophyceae, Chlamydomonas reinhardtii and Volvox carterii, and four Prasinophytae, two Ostreococcus strains and two Micromonas pusilla strains. Our analyses revealed a complex metabolic pathway whose intricacies and function seem conserved throughout the green lineage. Comparison of this pathway to that recently proposed for the Rhodophyceae suggests that the complexity that we observed is unique to the green lineage and was generated when the latter diverged from the red algae. This finding corresponds well with the plastidial location of starch metabolism in Chloroplastidae. In contrast, Rhodophyceae and Glaucophyta produce and store starch in the cytoplasm and have a lower complexity pathway. Cytoplasmic starch synthesis is currently hypothesized to represent the ancestral state of storage polysaccharide metabolism in Archaeplastida. The retargeting of components of the cytoplasmic pathway to plastids likely required a complex stepwise process involving several rounds of gene duplications. We propose that this relocation of glucan synthesis to the plastid facilitated evolution of chlorophyll-containing light-harvesting complex antennae by playing a protective role within the chloroplast.

Indexed as

Gene DuplicationAdenosine DiphosphateChloroplastsEukaryotaGlucoseIsoenzymesMembrane Transport ProteinsOligosaccharidesPhylogenyStarchAdenosine DiphosphateGlucoseIsoenzymesMembrane Transport ProteinsOligosaccharidesStarch

Identifiers

PMID18245855
PMCPMC2323822
OpenAlexW2163748575

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.