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Comment
. 2018 May 29;115(22):5629-5631.
doi: 10.1073/pnas.1805944115. Epub 2018 May 15.

Root-exuded coumarin shapes the root microbiome

Derek S Lundberg  1 , Paulo J P L Teixeira  2
Affiliations
Comment

Root-exuded coumarin shapes the root microbiome

Derek S Lundberg et al. Proc Natl Acad Sci U S A. .
No abstract available

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Fig. 1.
Fig. 1.
Model for the dual action of MYB72 and BGLU42 in iron mobilization and in shaping the root microbiome. The transcription factor MYB72 and the β-glucosidase BGLU42 are both required for the exudation of the coumarin scopoletin by Arabidopsis roots. Biosynthesis and secretion of scopoletin are induced under iron-limiting conditions or by beneficial root-colonizing bacteria such as P. simiae WCS417. Secreted scopoletin is proposed to increase iron mobilization and uptake by the roots. Moreover, scopoletin possess antimicrobial activity, and its accumulation in the rhizosphere may select tolerant microbes with beneficial effects to the plant while suppressing potentially negative microbes, including pathogens. Further research is required to elucidate the significance of scopoletin-selected microbial communities.
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References

    1. Howe AC, et al. Tackling soil diversity with the assembly of large, complex metagenomes. Proc Natl Acad Sci USA. 2014;111:4904–4909. - PMC - PubMed
    1. Sánchez-Cañizares C, Jorrín B, Poole PS, Tkacz A. Understanding the holobiont: The interdependence of plants and their microbiome. Curr Opin Microbiol. 2017;38:188–196. - PubMed
    1. Zhalnina K, et al. Dynamic root exudate chemistry and microbial substrate preferences drive patterns in rhizosphere microbial community assembly. Nat Microbiol. 2018;3:470–480. - PubMed
    1. Doornbos RF, van Loon LC, Bakker PA. Impact of root exudates and plant defense signaling on bacterial communities in the rhizosphere. A review. Agron Sustain Dev. 2012;32:227–243.
    1. Fitzpatrick CR, et al. Assembly and ecological function of the root microbiome across angiosperm plant species. Proc Natl Acad Sci USA. 2018;115:E1157–E1165. - PMC - PubMed

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