Evidence map›Paper›PMID 36266335›Full record

ArticleNature microbiology2022

Diverse MarR bacterial regulators of auxin catabolism in the plant microbiome.

Jonathan M Conway, William G Walton, Isai Salas-González, Theresa F Law, Chloe A Lindberg, Laura E Crook, Suzanne M Kosina, Connor R Fitzpatrick, Adam D Lietzan, Trent R Northen and 4 more

Open access · hybridAbstract read
In one paragraph

Article in Nature microbiology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed, 1 pooled it
7.8field-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

30 citing papers in PubMed, 1 synthesis or guideline pooled it, 43 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Unlocking the power ofmSystems · 2026
    Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Review
  15. Article
  16. Microbial drivers of root plasticity.The New phytologist · 2025
    Review
  17. Review
  18. Article
  19. Review
  20. 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

14 authors at 2 institutions in 2 countries.

Jonathan M Conway *Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.ORCID 0000-0002-2715-2149
William G Walton *Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
Isai Salas-González *Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.ORCID 0000-0002-0347-5058
Theresa F LawDepartment of Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
Chloe A LindbergDepartment of Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
Laura E CrookDepartment of Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
Suzanne M KosinaEnvironmental Genomics and Systems Biology, Lawrence Berkeley National Laboratory, Berkeley, CA, USA.ORCID 0000-0003-2885-1248
Connor R FitzpatrickDepartment of Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
Adam D LietzanDivision of Oral and Craniofacial Health Sciences, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.ORCID 0000-0001-6388-2491
Trent R NorthenEnvironmental Genomics and Systems Biology, Lawrence Berkeley National Laboratory, Berkeley, CA, USA.ORCID 0000-0001-8404-3259
Corbin D JonesDepartment of Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
Omri M FinkelDepartment of Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.ORCID 0000-0003-4770-0402
Matthew R RedinboDepartment of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA. redinbo@unc.edu.ORCID 0000-0003-0814-5346
Jeffery L DanglDepartment of Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA. dangl@email.unc.edu.ORCID 0000-0003-3199-8654
University of North Carolina at Chapel Hill · USLawrence Berkeley National Laboratory · US

Funding

Howard Hughes Medical Institute
6 · The paper itself

Abstract

Chemical signalling in the plant microbiome can have drastic effects on microbial community structure, and on host growth and development. Previously, we demonstrated that the auxin metabolic signal interference performed by the bacterial genus Variovorax via an auxin degradation locus was essential for maintaining stereotypic root development in an ecologically relevant bacterial synthetic community. Here, we dissect the Variovorax auxin degradation locus to define the genes iadDE as necessary and sufficient for indole-3-acetic acid (IAA) degradation and signal interference. We determine the crystal structures and binding properties of the operon's MarR-family repressor with IAA and other auxins. Auxin degradation operons were identified across the bacterial tree of life and we define two distinct types on the basis of gene content and metabolic products: iac-like and iad-like. The structures of MarRs from representatives of each auxin degradation operon type establish that each has distinct IAA-binding pockets. Comparison of representative IAA-degrading strains from diverse bacterial genera colonizing Arabidopsis plants show that while all degrade IAA, only strains containing iad-like auxin-degrading operons interfere with auxin signalling in a complex synthetic community context. This suggests that iad-like operon-containing bacterial strains, including Variovorax species, play a key ecological role in modulating auxins in the plant microbiome.

Indexed as

ArabidopsisArabidopsis ProteinsMicrobiotaIndoleacetic AcidsPlant Growth RegulatorsPlantsArabidopsis ProteinsIndoleacetic AcidsPlant Growth Regulators

Identifiers

PMID36266335
PMCPMC9613470
OpenAlexW4306948671

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.