Evidence map›Paper›PMID 18441060›Full record

ArticleJournal of bacteriology2008

Glucomannan-mediated attachment of Rhizobium leguminosarum to pea root hairs is required for competitive nodule infection.

Alan Williams, Adam Wilkinson, Martin Krehenbrink, Daniela M Russo, Angeles Zorreguieta, J Allan Downie

Open access · bronzeAbstract read
In one paragraph

Article in Journal of bacteriology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 58 papers.

0numbers the graph read from it
0cells of the map it votes in
58citing papers in PubMed
8.2field-weighted citation impact, top 3% 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

58 citing papers in PubMed, 124 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Deciphering bacterial mechanisms of root colonization.Environmental microbiology reports · 2021
    Review
  10. Review
  11. Exopolysaccharide Carbohydrate Structure and Biofilm Formation byInternational journal of molecular sciences · 2021
    Article
  12. Review
  13. Pectin Induced Colony Expansion of Soil-DerivedFrontiers in microbiology · 2021
    Article
  14. Article
  15. Article
  16. Role ofJournal of bacteriology · 2019
    Article
  17. Article
  18. Transcriptomic Studies Reveal that theInternational journal of molecular sciences · 2019
    Article
  19. Article
  20. Defining the Genetic Basis of Plant⁻Endophytic Bacteria Interactions.International journal of molecular sciences · 2019
    Review
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

6 authors at 4 institutions in 2 countries.

Alan WilliamsJohn Innes Centre, Norwich Research Park, Colney, Norwich NR4 7UH, United Kingdom.
Adam Wilkinson
Martin Krehenbrink
Daniela M Russo
Angeles Zorreguieta
J Allan Downie
Norwich Research Park · GBConsejo Nacional de Investigaciones Científicas y Técnicas · ARFundación Instituto Leloir · ARJohn Innes Centre · GB

Funding

Biotechnology and Biological Sciences Research Council BB/ED17045Biotechnology and Biological Sciences Research Council P19980
6 · The paper itself

Abstract

The Rhizobium leguminosarum biovar viciae genome contains several genes predicted to determine surface polysaccharides. Mutants predicted to affect the initial steps of polysaccharide synthesis were identified and characterized. In addition to the known cellulose (cel) and acidic exopolysaccharide (EPS) (pss) genes, we mutated three other loci; one of these loci (gmsA) determines glucomannan synthesis and one (gelA) determines a gel-forming polysaccharide, but the role of the other locus (an exoY-like gene) was not identified. Mutants were tested for attachment and biofilm formation in vitro and on root hairs; the mutant lacking the EPS was defective for both of these characteristics, but mutation of gelA or the exoY-like gene had no effect on either type of attachment. The cellulose (celA) mutant attached and formed normal biofilms in vitro, but it did not form a biofilm on root hairs, although attachment did occur. The cellulose-dependent biofilm on root hairs appears not to be critical for nodulation, because the celA mutant competed with the wild-type for nodule infection. The glucomannan (gmsA) mutant attached and formed normal biofilms in vitro, but it was defective for attachment and biofilm formation on root hairs. Although this mutant formed nodules on peas, it was very strongly outcompeted by the wild type in mixed inoculations, showing that glucomannan is critical for competitive nodulation. The polysaccharide synthesis genes around gmsA are highly conserved among other rhizobia and agrobacteria but are absent from closely related bacteria (such as Brucella spp.) that are not normally plant associated, suggesting that these genes may play a wide role in bacterium-plant interactions.

Indexed as

Bacterial AdhesionBiofilmsCelluloseGenes, BacterialMannansMutationPisum sativumPlant RootsPolysaccharides, BacterialRhizobium leguminosarumRoot Nodules, Plant(1-6)-alpha-glucomannanCelluloseMannansPolysaccharides, Bacterial

Identifiers

PMID18441060
PMCPMC2446804
OpenAlexW2132103382

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.