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Journal Articles eLife Year : 2021

Pan-genome analysis identifies intersecting roles for Pseudomonas specialized metabolites in potato pathogen inhibition

Alba Pacheco-Moreno
  • Function : Author
Francesca Stefanato
Jonathan Ford
Christine Trippel
  • Function : Author
Simon Uszkoreit
  • Function : Author
Laura Ferrafiat
  • Function : Author
Ruth Dickens
  • Function : Author
Nathan Kelly
  • Function : Author
Alexander Dh Kingdon
Liana Ambrosetti
  • Function : Author
Sergey Nepogodiev
Kim Findlay
Jitender Cheema
  • Function : Author
Martin Trick
  • Function : Author
Govind Chandra
Graham Tomalin
  • Function : Author
Jacob Malone
Andrew Truman

Abstract

Agricultural soil harbors a diverse microbiome that can form beneficial relationships with plants, including the inhibition of plant pathogens. Pseudomonas spp. are one of the most abundant bacterial genera in the soil and rhizosphere and play important roles in promoting plant health. However, the genetic determinants of this beneficial activity are only partially understood. Here, we genetically and phenotypically characterize the Pseudomonas fluorescens population in a commercial potato field, where we identify strong correlations between specialized metabolite biosynthesis and antagonism of the potato pathogens Streptomyces scabies and Phytophthora infestans . Genetic and chemical analyses identified hydrogen cyanide and cyclic lipopeptides as key specialized metabolites associated with S. scabies inhibition, which was supported by in planta biocontrol experiments. We show that a single potato field contains a hugely diverse and dynamic population of Pseudomonas bacteria, whose capacity to produce specialized metabolites is shaped both by plant colonization and defined environmental inputs.

Dates and versions

hal-04459503 , version 1 (15-02-2024)

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Alba Pacheco-Moreno, Francesca Stefanato, Jonathan Ford, Christine Trippel, Simon Uszkoreit, et al.. Pan-genome analysis identifies intersecting roles for Pseudomonas specialized metabolites in potato pathogen inhibition. eLife, 2021, 10, ⟨10.7554/eLife.71900⟩. ⟨hal-04459503⟩
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