Evidence map›Paper›PMID 28157236›Full record

ArticleScientific reports2017

Boreal pollen contain ice-nucleating as well as ice-binding 'antifreeze' polysaccharides.

Katharina Dreischmeier, Carsten Budke, Lars Wiehemeier, Tilman Kottke, Thomas Koop

Abstract read
In one paragraph

Article in Scientific reports, 2017. 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
–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

29 citing papers in PubMed.

  1. Article
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  4. Review
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  6. Article
  7. Measurement of Ice Nucleation Activity of Biological Samples.Methods in molecular biology (Clifton, N.J.) · 2024
    Article
  8. Article
  9. Functional aggregation of cell-free proteins enables fungal ice nucleation.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  10. Article
  11. Article
  12. Article
  13. A highly active mineral-based ice nucleating agent supportsJournal of the Royal Society, Interface · 2023
    Article
  14. Article
  15. Article
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  17. Article
  18. Article
  19. Article
  20. The contribution of black carbon to global ice nucleating particle concentrations relevant to mixed-phase clouds.Proceedings of the National Academy of Sciences of the United States of America · 2020
    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

5 authors.

Katharina DreischmeierBielefeld University, Faculty of Chemistry, Atmospheric and Physical Chemistry, D-33615 Bielefeld, Germany.
Carsten BudkeBielefeld University, Faculty of Chemistry, Atmospheric and Physical Chemistry, D-33615 Bielefeld, Germany.
Lars WiehemeierBielefeld University, Faculty of Chemistry, Atmospheric and Physical Chemistry, D-33615 Bielefeld, Germany.
Tilman KottkeBielefeld University, Faculty of Chemistry, Physical and Biophysical Chemistry, D-33615 Bielefeld, Germany.
Thomas KoopBielefeld University, Faculty of Chemistry, Atmospheric and Physical Chemistry, D-33615 Bielefeld, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Ice nucleation and growth is an important and widespread environmental process. Accordingly, nature has developed means to either promote or inhibit ice crystal formation, for example ice-nucleating proteins in bacteria or ice-binding antifreeze proteins in polar fish. Recently, it was found that birch pollen release ice-nucleating macromolecules when suspended in water. Here we show that birch pollen washing water exhibits also ice-binding properties such as ice shaping and ice recrystallization inhibition, similar to antifreeze proteins. We present spectroscopic evidence that both the ice-nucleating as well as the ice-binding molecules are polysaccharides bearing carboxylate groups. The spectra suggest that both polysaccharides consist of very similar chemical moieties, but centrifugal filtration indicates differences in molecular size: ice nucleation occurs only in the supernatant of a 100 kDa filter, while ice shaping is strongly enhanced in the filtrate. This finding may suggest that the larger ice-nucleating polysaccharides consist of clusters of the smaller ice-binding polysaccharides, or that the latter are fragments of the ice-nucleating polysaccharides. Finally, similar polysaccharides released from pine and alder pollen also display both ice-nucleating as well as ice-binding ability, suggesting a common mechanism of interaction with ice among several boreal pollen with implications for atmospheric processes and antifreeze protection.

Indexed as

FreezingIceAcclimatizationBetulaPollenPolysaccharidesIcePolysaccharides

Identifiers

PMID28157236
PMCPMC5291224

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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.