Evidence map›Paper›PMID 25624477›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2015

Nostopeptolide plays a governing role during cellular differentiation of the symbiotic cyanobacterium Nostoc punctiforme.

Anton Liaimer, Eric J N Helfrich, Katrin Hinrichs, Arthur Guljamow, Keishi Ishida, Christian Hertweck, Elke Dittmann

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed
12.1field-weighted citation impact, top 2% 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, 65 citations in OpenAlex.

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  10. Hormogonium Development and Motility in Filamentous Cyanobacteria.Applied and environmental microbiology · 2023
    Review
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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

7 authors at 3 institutions in 2 countries.

Anton LiaimerFaculty of Biosciences, Fisheries and Economics, Department of Arctic and Marine Biology, Molecular Environments Group, University of Tromsø, 9037 Tromsø, Norway;
Eric J N HelfrichLeibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, 07745 Jena, Germany; and.
Katrin HinrichsInstitute for Biochemistry and Biology, Department of Microbiology, University of Potsdam, 14476 Potsdam-Golm, Germany.
Arthur GuljamowInstitute for Biochemistry and Biology, Department of Microbiology, University of Potsdam, 14476 Potsdam-Golm, Germany.
Keishi IshidaLeibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, 07745 Jena, Germany; and.
Christian HertweckLeibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, 07745 Jena, Germany; and.
Elke DittmannInstitute for Biochemistry and Biology, Department of Microbiology, University of Potsdam, 14476 Potsdam-Golm, Germany editt@uni-potsdam.de.
Leibniz-Institut für Naturstoff-Forschung und Infektionsbiologie e. V. - Hans-Knöll-Institut (HKI) · DEUniversity of Potsdam · DEUiT The Arctic University of Norway · NO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Nostoc punctiforme is a versatile cyanobacterium that can live either independently or in symbiosis with plants from distinct taxa. Chemical cues from plants and N. punctiforme were shown to stimulate or repress, respectively, the differentiation of infectious motile filaments known as hormogonia. We have used a polyketide synthase mutant that accumulates an elevated amount of hormogonia as a tool to understand the effect of secondary metabolites on cellular differentiation of N. punctiforme. Applying MALDI imaging to illustrate the reprogramming of the secondary metabolome, nostopeptolides were identified as the predominant difference in the pks2(-) mutant secretome. Subsequent differentiation assays and visualization of cell-type-specific expression of nostopeptolides via a transcriptional reporter strain provided evidence for a multifaceted role of nostopeptolides, either as an autogenic hormogonium-repressing factor or as a chemoattractant, depending on its extracellular concentration. Although nostopeptolide is constitutively expressed in the free-living state, secreted levels dynamically change before, during, and after the hormogonium differentiation phase. The metabolite was found to be strictly down-regulated in symbiosis with Gunnera manicata and Blasia pusilla, whereas other metabolites are up-regulated, as demonstrated via MALDI imaging, suggesting plants modulate the fine-balanced cross-talk network of secondary metabolites within N. punctiforme.

Indexed as

Plant Physiological PhenomenaCell DifferentiationCell Surface ExtensionsChromatography, High Pressure LiquidEmbryophytaGene Expression Regulation, BacterialMagnoliopsidaMolecular StructureNostocPeptidesSpecies SpecificitySpectrometry, Mass, Matrix-Assisted Laser Desorption-IonizationSymbiosisPeptidescell differentiationMALDI imagingnonribosomal peptidesignalingsymbiosis

Identifiers

PMID25624477
PMCPMC4330735
OpenAlexW1993935949

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.