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Related Experiment Video

Updated: May 22, 2025

Using the Overlay Assay to Qualitatively Measure Bacterial Production of and Sensitivity to Pneumococcal Bacteriocins

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Published on: September 30, 2014

Tailocin-Mediated Interactions Among Soft Rot Pectobacteriaceae.

Marcin Borowicz¹, Dorota M Krzyżanowska¹, Marta Sobolewska¹

¹Laboratory of Biologically Active Compounds, Intercollegiate Faculty of Biotechnology of UG and MUG, University of Gdansk, Gdansk, Poland.

Molecular Ecology

|March 15, 2025

Summary

Plant pathogenic bacteria use tailocins, phage-like particles, to kill kin. Dickeya bacteria are more aggressive killers than Pectobacterium, with tailocins playing a key role in plant infection competition.

Keywords:

Erwinia carotovora Erwinia chrysanthemi bacteriophage hydrogen peroxide interactions intergenus phage tail‐like particles prophage

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Published on: July 25, 2017

Area of Science:

Microbiology
Bacteriology
Plant Pathology

Background:

Bacteria harbor phage-derived elements, producing tailocins (phage-like particles) for intraspecies competition.
Plant-pathogenic bacteria genera Pectobacterium, Dickeya, and Musicola offer a model to study tailocin ecological roles due to niche competition.

Purpose of the Study:

Investigate tailocin production and activity in Pectobacterium, Dickeya, and Musicola.
Determine the ecological significance of tailocins in plant-pathogenic bacteria interactions.

Main Methods:

Microscopy to observe tailocin production.
Assessing tailocin-mediated killing across 351 strain pairs.
Genomic analysis of tailocin clusters.
Induction experiments using hydrogen peroxide.
Detection in infected potato tissue and river water.

Main Results:

88% of analyzed strains produced tailocins.
Dickeya spp. showed higher killing rates (57.1%) than Pectobacterium spp. (21.6%).
Dickeya tailocins exhibited broader phylogenetic killing; Pectobacterium tailocins were genus-specific.
Mutual killing occurred in 33.9% of interactions, mainly within Dickeya spp.
Genomic analysis revealed structural differences in tailocin clusters between genera.
Tailocin production increased with hydrogen peroxide.
Tailocins were found in infected potato tissue but not river water.

Conclusions:

Tailocins are widespread weapons in plant-pathogenic bacteria, mediating competition.
Dickeya spp. employ more potent and diverse tailocin-based antagonism than Pectobacterium spp.
Tailocin production is inducible by oxidative stress, relevant during plant-pathogen interactions.
Tailocins are ecologically significant in plant infection environments but not in aquatic systems.