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Nature. 2017 Mar 23;543(7646):513-518. doi: 10.1038/nature21417. Epub 2017 Mar 15.

Root microbiota drive direct integration of phosphate stress and immunity.

Author information

1
Department of Biology, University of North Carolina, Chapel Hill, North Carolina 27599-3280, USA.
2
Howard Hughes Medical Institute, University of North Carolina, Chapel Hill, North Carolina 27599-3280, USA.
3
Curriculum in Bioinformatics and Computational Biology, University of North Carolina, Chapel Hill, North Carolina 27599-3280, USA.
4
Department of Plant Molecular Genetics, Centro Nacional de Biotecnología, CNB-CSIC, Darwin 3, 28049 Madrid, Spain.
5
Department of Genetics, University of North Carolina, Chapel Hill, North Carolina, USA.
6
Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, North Carolina 27599-3280, USA.
7
Carolina Center for Genome Sciences, University of North Carolina, Chapel Hill, North Carolina 27599-3280, USA.
8
Curriculum in Genetics and Molecular Biology, University of North Carolina, Chapel Hill, North Carolina 27599-3280, USA.
9
Department of Microbiology and Immunology, University of North Carolina, Chapel Hill, North Carolina 27599-3280, USA.

Abstract

Plants live in biogeochemically diverse soils with diverse microbiota. Plant organs associate intimately with a subset of these microbes, and the structure of the microbial community can be altered by soil nutrient content. Plant-associated microbes can compete with the plant and with each other for nutrients, but may also carry traits that increase the productivity of the plant. It is unknown how the plant immune system coordinates microbial recognition with nutritional cues during microbiome assembly. Here we establish that a genetic network controlling the phosphate stress response influences the structure of the root microbiome community, even under non-stress phosphate conditions. We define a molecular mechanism regulating coordination between nutrition and defence in the presence of a synthetic bacterial community. We further demonstrate that the master transcriptional regulators of phosphate stress response in Arabidopsis thaliana also directly repress defence, consistent with plant prioritization of nutritional stress over defence. Our work will further efforts to define and deploy useful microbes to enhance plant performance.

PMID:
28297714
PMCID:
PMC5364063
DOI:
10.1038/nature21417
[Indexed for MEDLINE]
Free PMC Article

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