Evidence map›Paper›PMID 27143359›Full record

ArticleThe Journal of biological chemistry2016

Membranes as Structural Antioxidants: RECYCLING OF MALONDIALDEHYDE TO ITS SOURCE IN OXIDATION-SENSITIVE CHLOROPLAST FATTY ACIDS.

Emanuel Schmid-Siegert, Olga Stepushenko, Gaetan Glauser, Edward E Farmer

Open access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed
3.0field-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

29 citing papers in PubMed, 72 citations in OpenAlex.

  1. Article
  2. Plants (Basel, Switzerland) · 2026
    Article
  3. Leaf Blight inPlants (Basel, Switzerland) · 2025
    Article
  4. Article
  5. Article
  6. Article
  7. AJournal of pharmaceutical analysis · 2023
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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

4 authors at 2 institutions in 1 country.

Emanuel Schmid-SiegertFrom the Department of Plant Molecular Biology, Biophore, University of Lausanne, 1015 Lausanne, Switzerland and.ORCID 0000-0003-1339-5120
Olga StepushenkoFrom the Department of Plant Molecular Biology, Biophore, University of Lausanne, 1015 Lausanne, Switzerland and.
Gaetan GlauserNeuchâtel Platform of Analytical Chemistry, University of Neuchâtel, 2009 Neuchâtel, Switzerland.
Edward E FarmerFrom the Department of Plant Molecular Biology, Biophore, University of Lausanne, 1015 Lausanne, Switzerland and edward.farmer@unil.ch.
University of Lausanne · CHUniversity of Neuchâtel · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Genetic evidence suggests that membranes rich in polyunsaturated fatty acids (PUFAs) act as supramolecular antioxidants that capture reactive oxygen species, thereby limiting damage to proteins. This process generates lipid fragmentation products including malondialdehyde (MDA), an archetypal marker of PUFA oxidation. We observed transient increases in levels of endogenous MDA in wounded Arabidopsis thaliana leaves, raising the possibility that MDA is metabolized. We developed a rigorous ion exchange method to purify enzymatically generated (13)C- and (14)C-MDA. Delivered as a volatile to intact plants, MDA was efficiently incorporated into lipids. Mass spectral and genetic analyses identified the major chloroplast galactolipid: α-linolenic acid (18:3)-7Z,10Z,13Z-hexadecatrienoic acid (16:3)-monogalactosyldiacylglycerol (18:3-16:3-MGDG) as an end-product of MDA incorporation. Consistent with this, the fad3-2 fad7-2 fad8 mutant that lacks tri-unsaturated fatty acids incorporated (14)C-MDA into 18:2-16:2-MGDG. Saponification of (14)C-labeled 18:3-16:3-MGDG revealed 84% of (14)C-label in the acyl groups with the remaining 16% in the head group. 18:3-16:3-MGDG is enriched proximal to photosystem II and is likely a major in vivo source of MDA in photosynthetic tissues. We propose that nonenzymatically generated lipid fragments such as MDA are recycled back into plastidic galactolipids that, in their role as cell protectants, can again be fragmented into MDA.

Indexed as

AcetatesAntioxidantsArabidopsisCell MembraneChloroplastsFatty AcidsLipid MetabolismMalondialdehydeMembrane LipidsOxidation-ReductionOxidative StressPlant LeavesAcetatesAntioxidantsFatty AcidsMalondialdehydeMembrane LipidsantioxidantArabidopsis thalianalipid oxidationomega-3photoprotectionphotosynthesispolyunsaturated fatty acid (PUFA)reactive oxygen species (ROS)singlet oxygen

Identifiers

PMID27143359
PMCPMC4933218
OpenAlexW2345789278

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.