Evidence map›Paper›PMID 24714165›Full record

ArticlePLoS biology2014

Phytoplasma effector SAP54 hijacks plant reproduction by degrading MADS-box proteins and promotes insect colonization in a RAD23-dependent manner.

Allyson M MacLean, Zigmunds Orlovskis, Krissana Kowitwanich, Anna M Zdziarska, Gerco C Angenent, Richard G H Immink, Saskia A Hogenhout

Open access · goldAbstract read
In one paragraph

Article in PLoS biology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 117 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
117citing papers in PubMed, 1 pooled it
26.1field-weighted citation impact, top 1% 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

117 citing papers in PubMed, 1 synthesis or guideline pooled it, 252 citations in OpenAlex.

  1. Pooled it
  2. The pathogenic effector PHYL1The Plant journal : for cell and molecular biology · 2026
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  14. An In Vitro Ubiquitination Assay to Study Phytoplasmal Effector Function.Methods in molecular biology (Clifton, N.J.) · 2026
    Article
  15. Review
  16. Article
  17. Article
  18. Review
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57 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors at 3 institutions in 2 countries.

Allyson M MacLeanDepartment of Cell and Developmental Biology, John Innes Centre, Norwich Research Park, Norwich, Norfolk, United Kingdom.
Zigmunds OrlovskisDepartment of Cell and Developmental Biology, John Innes Centre, Norwich Research Park, Norwich, Norfolk, United Kingdom.
Krissana KowitwanichDepartment of Cell and Developmental Biology, John Innes Centre, Norwich Research Park, Norwich, Norfolk, United Kingdom.
Anna M ZdziarskaBioscience, Plant Research International, Wageningen, The Netherlands.
Gerco C AngenentBioscience, Plant Research International, Wageningen, The Netherlands; Laboratory of Molecular Biology, Wageningen University, Wageningen, The Netherlands.
Richard G H ImminkBioscience, Plant Research International, Wageningen, The Netherlands.
Saskia A HogenhoutDepartment of Cell and Developmental Biology, John Innes Centre, Norwich Research Park, Norwich, Norfolk, United Kingdom.
Centre for BioSystems Genomics · NLJohn Innes Centre · GBNorwich Research Park · GB

Funding

Biotechnology and Biological Sciences Research Council BB/J004553/1Biotechnology and Biological Sciences Research Council BB/K002848/1Biotechnology and Biological Sciences Research Council BBS/E/J/000C0623
6 · The paper itself

Abstract

Pathogens that rely upon multiple hosts to complete their life cycles often modify behavior and development of these hosts to coerce them into improving pathogen fitness. However, few studies describe mechanisms underlying host coercion. In this study, we elucidate the mechanism by which an insect-transmitted pathogen of plants alters floral development to convert flowers into vegetative tissues. We find that phytoplasma produce a novel effector protein (SAP54) that interacts with members of the MADS-domain transcription factor (MTF) family, including key regulators SEPALLATA3 and APETALA1, that occupy central positions in the regulation of floral development. SAP54 mediates degradation of MTFs by interacting with proteins of the RADIATION SENSITIVE23 (RAD23) family, eukaryotic proteins that shuttle substrates to the proteasome. Arabidopsis rad23 mutants do not show conversion of flowers into leaf-like tissues in the presence of SAP54 and during phytoplasma infection, emphasizing the importance of RAD23 to the activity of SAP54. Remarkably, plants with SAP54-induced leaf-like flowers are more attractive for colonization by phytoplasma leafhopper vectors and this colonization preference is dependent on RAD23. An effector that targets and suppresses flowering while simultaneously promoting insect herbivore colonization is unprecedented. Moreover, RAD23 proteins have, to our knowledge, no known roles in flower development, nor plant defence mechanisms against insects. Thus SAP54 generates a short circuit between two key pathways of the host to alter development, resulting in sterile plants, and promotes attractiveness of these plants to leafhopper vectors helping the obligate phytoplasmas reproduce and propagate (zombie plants).

Indexed as

AnimalsArabidopsisArabidopsis ProteinsBacterial ProteinsDNA-Binding ProteinsFlowersHemipteraHomeodomain ProteinsHost-Pathogen InteractionsMADS Domain ProteinsNicotianaPhytoplasmaPlant DiseasesPlant LeavesPlants, Genetically ModifiedTranscription FactorsAP1 protein, ArabidopsisArabidopsis ProteinsBacterial ProteinsDNA-Binding ProteinsHomeodomain ProteinsMADS Domain ProteinsRAD23a protein, ArabidopsisSEP3 protein, ArabidopsisTranscription Factors

Identifiers

PMID24714165
PMCPMC3979655
OpenAlexW2128570625

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.