Evidence map›Paper›PMID 12746522›Full record

ArticlePlant physiology2003

A novel family in Medicago truncatula consisting of more than 300 nodule-specific genes coding for small, secreted polypeptides with conserved cysteine motifs.

Peter Mergaert, Krisztina Nikovics, Zsolt Kelemen, Nicolas Maunoury, Danièle Vaubert, Adam Kondorosi, Eva Kondorosi

Open access · bronzeAbstract read
In one paragraph

Article in Plant physiology, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 170 papers.

0numbers the graph read from it
0cells of the map it votes in
170citing papers in PubMed
11.3field-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

170 citing papers in PubMed, 375 citations in OpenAlex.

  1. Article
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  5. BacA(SbmA) importer of legume symbiotic NCR peptides: Protein architecture, function, and evolutionary implications.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
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  8. Review
  9. Article
  10. Review
  11. Article
  12. Article
  13. Genome-Wide Identification of the SPP/SPPL Gene Family andInternational journal of molecular sciences · 2024
    Article
  14. Review
  15. Autophagy and Symbiosis: Membranes, ER, and Speculations.International journal of molecular sciences · 2024
    Review
  16. Signaling in Legume-Rhizobia Symbiosis.International journal of molecular sciences · 2023
    Review
  17. Article
  18. Article
  19. Article
  20. Article

110 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

7 authors at 1 institution in 1 country.

Peter MergaertInstitut des Sciences du Végétal, Centre National de la Recherche Scientifique, Avenue de la Terrasse, 91198 Gif-sur-Yvette, France.
Krisztina Nikovics
Zsolt Kelemen
Nicolas Maunoury
Danièle Vaubert
Adam Kondorosi
Eva Kondorosi
Institut des Sciences du Végétal · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Transcriptome analysis of Medicago truncatula nodules has led to the discovery of a gene family named NCR (nodule-specific cysteine rich) with more than 300 members. The encoded polypeptides were short (60-90 amino acids), carried a conserved signal peptide, and, except for a conserved cysteine motif, displayed otherwise extensive sequence divergence. Family members were found in pea (Pisum sativum), broad bean (Vicia faba), white clover (Trifolium repens), and Galega orientalis but not in other plants, including other legumes, suggesting that the family might be specific for galegoid legumes forming indeterminate nodules. Gene expression of all family members was restricted to nodules except for two, also expressed in mycorrhizal roots. NCR genes exhibited distinct temporal and spatial expression patterns in nodules and, thus, were coupled to different stages of development. The signal peptide targeted the polypeptides in the secretory pathway, as shown by green fluorescent protein fusions expressed in onion (Allium cepa) epidermal cells. Coregulation of certain NCR genes with genes coding for a potentially secreted calmodulin-like protein and for a signal peptide peptidase suggests a concerted action in nodule development. Potential functions of the NCR polypeptides in cell-to-cell signaling and creation of a defense system are discussed.

Indexed as

Amino Acid SequenceConserved SequenceCysteineGene Expression Regulation, PlantMedicagoMolecular Sequence DataMultigene FamilyPeptidesPhylogenyPlant RootsProtein Sorting SignalsSequence Homology, Amino AcidSignal TransductionSinorhizobium melilotiSymbiosisCysteinePeptidesProtein Sorting Signals

Identifiers

PMID12746522
PMCPMC166962
OpenAlexW2091358620

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.