Synthetic microbe-to-plant communication channels

Author:

Boo AliceORCID,Toth Tyler,Yu Qiguo,Pfotenhauer Alexander,Fields Brandon D.,Lenaghan Scott C.ORCID,Stewart C. NealORCID,Voigt Christopher A.ORCID

Abstract

AbstractPlants and microbes communicate to collaborate to stop pests, scavenge nutrients, and react to environmental change. Microbiota consisting of thousands of species interact with each other and plants using a large chemical language that is interpreted by complex regulatory networks. In this work, we develop modular interkingdom communication channels, enabling bacteria to convey environmental stimuli to plants. We introduce a “sender device” in Pseudomonas putida and Klebsiella pneumoniae, that produces the small molecule p-coumaroyl-homoserine lactone (pC-HSL) when the output of a sensor or circuit turns on. This molecule triggers a “receiver device” in the plant to activate gene expression. We validate this system in Arabidopsis thaliana and Solanum tuberosum (potato) grown hydroponically and in soil, demonstrating its modularity by swapping bacteria that process different stimuli, including IPTG, aTc and arsenic. Programmable communication channels between bacteria and plants will enable microbial sentinels to transmit information to crops and provide the building blocks for designing artificial consortia.

Funder

NSF | Directorate for Education & Human Resources | Division of Graduate Education

United States Department of Defense | Defense Advanced Research Projects Agency

Publisher

Springer Science and Business Media LLC

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