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Modulation of Arabidopsis growth by volatile organic compounds from a root-derived bacterial community

Gözde Merve Türksoy, Réjane Carron, Anna Koprivova, View ORCID ProfileStanislav Kopriva, View ORCID ProfileKathrin Wippel, View ORCID ProfileTonni Grube Andersen
doi: https://doi.org/10.1101/2022.04.12.488003
Gözde Merve Türksoy
1Max Planck Institute for Plant Breeding Research, Carl-von-Linne-Weg 10, 50829, Cologne, Germany
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Réjane Carron
1Max Planck Institute for Plant Breeding Research, Carl-von-Linne-Weg 10, 50829, Cologne, Germany
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Anna Koprivova
2Cluster of Excellence on Plant Sciences, University of Cologne, 50674 Cologne, Germany
3Institute for Plant Sciences, University of Cologne, 50674 Cologne, Germany; Germany
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Stanislav Kopriva
2Cluster of Excellence on Plant Sciences, University of Cologne, 50674 Cologne, Germany
3Institute for Plant Sciences, University of Cologne, 50674 Cologne, Germany; Germany
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  • ORCID record for Stanislav Kopriva
Kathrin Wippel
1Max Planck Institute for Plant Breeding Research, Carl-von-Linne-Weg 10, 50829, Cologne, Germany
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  • For correspondence: wippel@mpipz.mpg.de tandersen@mpipz.mpg.de
Tonni Grube Andersen
1Max Planck Institute for Plant Breeding Research, Carl-von-Linne-Weg 10, 50829, Cologne, Germany
2Cluster of Excellence on Plant Sciences, University of Cologne, 50674 Cologne, Germany
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  • ORCID record for Tonni Grube Andersen
  • For correspondence: wippel@mpipz.mpg.de tandersen@mpipz.mpg.de
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Abstract

Plant roots are surrounded by fluctuating biotic and abiotic factors. The living component – the microbiota – is actively shaped by the plant and plays an important role in overall plant health. While it has been shown that specialized metabolites exuded from the plant are involved in shaping host interactions with the microbiota, it is unclear how underground volatile organic compounds (VOCs) influence this communication. This is especially true for root-associated bacteria which are known to release VOCs that can influence plant growth. Using a simplified synthetic bacterial community (SynCom) representing the phylogenetic diversity of bacteria in the root microbiome, we set out to characterize plant growth and defense metabolites when subjected to bacterial VOCs (bVOCs). Moreover, by profiling the SynCom community composition after co-cultivation with the plant, we explored how members of the community influenced each other in our growth setup. Our findings reveal that plant growth promotion can occur via VOCs from a bacterial SynCom, but that the plant response differs for individual community members. In addition, we find that bVOCs are able to repress chemical defense responses in the plant, possibly to facilitate colonization. By removing key species from the SynCom, we find that complex bacteria-bacteria interactions are likely to underlie this phenomenon, and that bVOC-induced modulation of plant responses in the rhizosphere may be an emergent property of bacterial communities rather than depending on individual species.

Competing Interest Statement

The authors have declared no competing interest.

Footnotes

  • ↵* shared first-authors

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The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-NC-ND 4.0 International license.
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Posted April 13, 2022.
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Modulation of Arabidopsis growth by volatile organic compounds from a root-derived bacterial community
Gözde Merve Türksoy, Réjane Carron, Anna Koprivova, Stanislav Kopriva, Kathrin Wippel, Tonni Grube Andersen
bioRxiv 2022.04.12.488003; doi: https://doi.org/10.1101/2022.04.12.488003
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Modulation of Arabidopsis growth by volatile organic compounds from a root-derived bacterial community
Gözde Merve Türksoy, Réjane Carron, Anna Koprivova, Stanislav Kopriva, Kathrin Wippel, Tonni Grube Andersen
bioRxiv 2022.04.12.488003; doi: https://doi.org/10.1101/2022.04.12.488003

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