Commensal Pseudomonas strains facilitate protective response against pathogens in the host plant.

Autor: Shalev O; Department of Molecular Biology, Max Planck Institute for Biology Tübingen, Tübingen, Germany.; Systems Biology of Microbial Communities, University of Tübingen, Tübingen, Germany., Karasov TL; Department of Molecular Biology, Max Planck Institute for Biology Tübingen, Tübingen, Germany.; School of Biological Sciences, University of Utah, Salt Lake City, UT, USA., Lundberg DS; Department of Molecular Biology, Max Planck Institute for Biology Tübingen, Tübingen, Germany., Ashkenazy H; Department of Molecular Biology, Max Planck Institute for Biology Tübingen, Tübingen, Germany., Pramoj Na Ayutthaya P; Department of Molecular Biology, Max Planck Institute for Biology Tübingen, Tübingen, Germany.; Department of Civil, Environmental and Geomatic Engineering, Swiss Federal Institute of Technology (ETH) Zurich, Zurich, Switzerland., Weigel D; Department of Molecular Biology, Max Planck Institute for Biology Tübingen, Tübingen, Germany. weigel@tue.mpg.de.
Jazyk: angličtina
Zdroj: Nature ecology & evolution [Nat Ecol Evol] 2022 Apr; Vol. 6 (4), pp. 383-396. Date of Electronic Publication: 2022 Feb 24.
DOI: 10.1038/s41559-022-01673-7
Abstrakt: The community structure in the plant-associated microbiome depends collectively on host-microbe, microbe-microbe and host-microbe-microbe interactions. The ensemble of interactions between the host and microbial consortia may lead to outcomes that are not easily predicted from pairwise interactions. Plant-microbe-microbe interactions are important to plant health but could depend on both host and microbe strain variation. Here we study interactions between groups of naturally co-existing commensal and pathogenic Pseudomonas strains in the Arabidopsis thaliana phyllosphere. We find that commensal Pseudomonas prompt a host response that leads to selective inhibition of a specific pathogenic lineage, resulting in plant protection. The extent of protection depends on plant genotype, supporting that these effects are host-mediated. Strain-specific effects are also demonstrated by one individual Pseudomonas isolate eluding the plant protection provided by commensals. Our work highlights how within-species genetic differences in both hosts and microbes can affect host-microbe-microbe dynamics.
(© 2022. The Author(s).)
Databáze: MEDLINE
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