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The core metabolome and root exudation dynamics of three phylogenetically distinct plant species

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  • Sarah McLaughlin

    (Lawrence Berkeley National Laboratory, Environmental Genomics and Systems Biology
    University of Zurich)

  • Kateryna Zhalnina

    (Lawrence Berkeley National Laboratory, Environmental Genomics and Systems Biology)

  • Suzanne Kosina

    (Lawrence Berkeley National Laboratory, Environmental Genomics and Systems Biology)

  • Trent R. Northen

    (Lawrence Berkeley National Laboratory, Environmental Genomics and Systems Biology
    DOE Joint Genome Institute, Lawrence Berkeley National Laboratory)

  • Joelle Sasse

    (Lawrence Berkeley National Laboratory, Environmental Genomics and Systems Biology
    DOE Joint Genome Institute, Lawrence Berkeley National Laboratory
    University of Zurich)

Abstract

Root exudates are plant-derived, exported metabolites likely shaping root-associated microbiomes by acting as nutrients and signals. However, root exudation dynamics are unclear and thus also, if changes in exudation are reflected in changes in microbiome structure. Here, we assess commonalities and differences between exudates of different plant species, diurnal exudation dynamics, as well as the accompanying methodological aspects of exudate sampling. We find that exudates should be collected for hours rather than days as many metabolite abundances saturate over time. Plant growth in sterile, nonsterile, or sugar-supplemented environments significantly alters exudate profiles. A comparison of Arabidopsis thaliana, Brachypodium distachyon, and Medicago truncatula shoot, root, and root exudate metabolite profiles reveals clear differences between these species, but also a core metabolome for tissues and exudates. Exudate profiles also exhibit a diurnal signature. These findings add to the methodological and conceptual groundwork for future exudate studies to improve understanding of plant-microbe interactions.

Suggested Citation

  • Sarah McLaughlin & Kateryna Zhalnina & Suzanne Kosina & Trent R. Northen & Joelle Sasse, 2023. "The core metabolome and root exudation dynamics of three phylogenetically distinct plant species," Nature Communications, Nature, vol. 14(1), pages 1-13, December.
  • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-37164-x
    DOI: 10.1038/s41467-023-37164-x
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    References listed on IDEAS

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    1. Lingfei Hu & Christelle A. M. Robert & Selma Cadot & Xi Zhang & Meng Ye & Beibei Li & Daniele Manzo & Noemie Chervet & Thomas Steinger & Marcel G. A. van der Heijden & Klaus Schlaeppi & Matthias Erb, 2018. "Root exudate metabolites drive plant-soil feedbacks on growth and defense by shaping the rhizosphere microbiota," Nature Communications, Nature, vol. 9(1), pages 1-13, December.
    2. Richard Baran & Eoin L. Brodie & Jazmine Mayberry-Lewis & Eric Hummel & Ulisses Nunes Da Rocha & Romy Chakraborty & Benjamin P. Bowen & Ulas Karaoz & Hinsby Cadillo-Quiroz & Ferran Garcia-Pichel & Tre, 2015. "Exometabolite niche partitioning among sympatric soil bacteria," Nature Communications, Nature, vol. 6(1), pages 1-9, November.
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    Cited by:

    1. Carin J. Ragland & Kevin Y. Shih & José R. Dinneny, 2024. "Choreographing root architecture and rhizosphere interactions through synthetic biology," Nature Communications, Nature, vol. 15(1), pages 1-11, December.

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