Evidence map›Paper›PMID 19880756›Full record

ArticleEukaryotic cell2009

Algal lipid bodies: stress induction, purification, and biochemical characterization in wild-type and starchless Chlamydomonas reinhardtii.

Zi Teng Wang, Nico Ullrich, Sunjoo Joo, Sabine Waffenschmidt, Ursula Goodenough

Abstract read
In one paragraph

Article in Eukaryotic cell, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 166 papers.

0numbers the graph read from it
0cells of the map it votes in
166citing 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

166 citing papers in PubMed.

  1. Article
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  6. The proteome is a terminal electron acceptor.Proceedings of the National Academy of Sciences of the United States of America · 2025
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  7. Article
  8. Increasing lipid production inFrontiers in bioengineering and biotechnology · 2024
    Article
  9. Article
  10. Article
  11. COPlants (Basel, Switzerland) · 2022
    Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Plant-environment interactions (Hoboken, N.J.) · 2022
    Article
  17. Article
  18. Underwater Light Manipulation by the Benthic DiatomNanomaterials (Basel, Switzerland) · 2021
    Article
  19. Article
  20. Review

106 more citing papers are in PubMed but not listed here.

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

5 authors.

Zi Teng WangDepartment of Biology, Washington University, St. Louis, MO 63130, USA.
Nico Ullrich
Sunjoo Joo
Sabine Waffenschmidt
Ursula Goodenough

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

When the unicellular green soil alga Chlamydomonas reinhardtii is deprived of nitrogen after entering stationary phase in liquid culture, the cells produce abundant cytoplasmic lipid bodies (LBs), as well as abundant starch, via a pathway that accompanies a regulated autophagy program. After 48 h of N starvation in the presence of acetate, the wild-type LB content has increased 15-fold. When starch biosynthesis is blocked in the sta6 mutant, the LB content increases 30-fold, demonstrating that genetic manipulation can enhance LB production. The use of cell wall-less strains permitted development of a rapid "popped-cell" microscopic assay to quantitate the LB content per cell and permitted gentle cell breakage and LB isolation. The highly purified LBs contain 90% triacylglycerol (TAG) and 10% free fatty acids (FFA). The fatty acids associated with the TAGs are approximately 50% saturated (C(16) and C(18)) fatty acids and approximately 50% unsaturated fatty acids, half of which are in the form of oleic acid (C(18:1)). The FFA are approximately 50% C(16) and approximately 50% C(18). The LB-derived TAG yield from a liter of sta6 cells at 10(7) cells/ml after starvation for 48 h is calculated to approach 400 mg. The LB fraction also contains low levels of charged glycerolipids, with the same profile as whole-cell charged glycerolipids, that presumably form LB membranes; chloroplast-specific neutral glycerolipids (galactolipids) are absent. Very low levels of protein are also present, but all matrix-assisted laser desorption ionization-identified species are apparent contaminants. Nitrogen stress-induced LB production in C. reinhardtii has the hallmarks of a discrete pathway that should be amenable to additional genetic and culture condition manipulation.

Indexed as

Lipid MetabolismStress, PhysiologicalAlgal ProteinsCells, CulturedChlamydomonas reinhardtiiChromatography, GasChromatography, Thin LayerLipidsMass SpectrometryMicroscopy, FluorescenceMutationNitrogenReference StandardsStaining and LabelingStarchTriglyceridesAlgal ProteinsLipidsNitrogenStarchTriglycerides

Identifiers

PMID19880756
PMCPMC2794211

What OpenQuestion holds

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Registered trials

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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.