Evidence map›Paper›PMID 25820807›Full record

ArticleLipids2015

Plant Sterol Diversity in Pollen from Angiosperms.

Claire Villette, Anne Berna, Vincent Compagnon, Hubert Schaller

Abstract read
PubMed Publisher
In one paragraph

Article in Lipids, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
1.7field-weighted citation impact, top 17% 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

19 citing papers in PubMed, 44 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Sterol and lipid metabolism in bees.Metabolomics : Official journal of the Metabolomic Society · 2023
    Review
  7. Article
  8. Assessing pollen nutrient content: a unifying approach for the study of bee nutritional ecology.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2022
    Article
  9. Article
  10. Article
  11. Article
  12. Membrane Sterol Composition inInternational journal of molecular sciences · 2021
    Article
  13. Article
  14. Article
  15. Inhibition of Phytosterol Biosynthesis by Azasterols.Molecules (Basel, Switzerland) · 2020
    Article
  16. Article
  17. Metabolism and Biological Activities of 4-Methyl-Sterols.Molecules (Basel, Switzerland) · 2019
    Review
  18. Article
  19. 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

4 authors at 2 institutions in 2 countries.

Claire VilletteInstitut de Biologie Moléculaire des Plantes du CNRS, UPR2357, Institut de Botanique, 28 rue Goethe, 67083, Strasbourg, France, claire.villette@ibmp-cnrs.unistra.fr.
Anne Berna
Vincent Compagnon
Hubert Schaller
Weatherford College · USInstitut de Biologie Moléculaire des Plantes · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Here we have examined the composition of free sterols and steryl esters of pollen from selected angiosperm species, as a first step towards a comprehensive analysis of sterol biogenesis in the male gametophyte. We detected four major sterol structural groups: cycloartenol derivatives bearing a 9β,19-cyclopropyl group, sterols with a double bond at C-7(8), sterols with a double bond at C-5(6), and stanols. All these groups were unequally distributed among species. However, the distribution of sterols as free sterols or as steryl esters in pollen grains indicated that free sterols were mostly Δ(5)-sterols and that steryl esters were predominantly 9β,19-cyclopropyl sterols. In order to link the sterol composition of a pollen grain at anthesis with the requirement for membrane lipid constituents of the pollen tube, we germinated pollen grains from Nicotiana tabacum, a model plant in reproductive biology. In the presence of radiolabelled mevalonic acid and in a time course series of measurements, we showed that cycloeucalenol was identified as the major neosynthesized sterol. Furthermore, the inhibition of cycloeucalenol neosynthesis by squalestatin was in full agreement with a de novo biogenesis and an apparent truncated pathway in the pollen tube.

Indexed as

Gas Chromatography-Mass SpectrometryGerminationMagnoliopsidaPollenSterolsSterols

Identifiers

PMID25820807
OpenAlexW1980236883

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.