Plant-derived coumarins shape the composition of an <i>Arabidopsis</i> synthetic root microbiome
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- Mathias J. E. E. E. Voges
- Department of Chemical Engineering, Stanford University, Stanford, CA 94305;
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- Yang Bai
- Department of Plant Microbe Interactions, Max Planck Institute for Plant Breeding Research, 50829 Cologne, Germany;
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- Paul Schulze-Lefert
- Department of Plant Microbe Interactions, Max Planck Institute for Plant Breeding Research, 50829 Cologne, Germany;
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- Elizabeth S. Sattely
- Department of Chemical Engineering, Stanford University, Stanford, CA 94305;
説明
<jats:title>Significance</jats:title> <jats:p> The root microbiome composition is largely determined by the soil inoculum, with a distinct contribution from the host. The molecular mechanisms with which the host influences its rhizobiome are only beginning to be discovered. Using a hydroponics-based synthetic community approach, we probe how root-exuded specialized metabolites sculpt the root microbiome. We uncover a role for coumarins in structuring the rhizobiome, particularly by limiting the growth of a <jats:italic>Pseudomonas</jats:italic> strain, for which we propose a mechanism of action involving reactive oxygen species. Our findings support the possibility that root-exuded coumarins form a part of the plant’s adaptive response to iron deficiency that goes beyond iron mobilization to modulate the rhizobiome, and highlight avenues toward engineering the rhizosphere for plant health. </jats:p>
収録刊行物
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- Proceedings of the National Academy of Sciences
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Proceedings of the National Academy of Sciences 116 (25), 12558-12565, 2019-05-31
Proceedings of the National Academy of Sciences