Poplar bacteria project on EurekAlert

In the current study — through genome sequencing performed at DOE’s Joint Genome Institute, manual genome annotation in collaboration with Brookhaven biologist Sebastien Monchy, and metabolic analyses performed at the University of South Carolina in collaboration with Brookhaven plant scientist Lee Newman — the scientists identified an extended set of genes that help Enterobacter (sp. 638) establish itself in this niche. The studies also revealed remarkable interactions between the microbe and its host that help the plant survive and thrive.
Among the bacterial genes identified are ones that code for proteins that: help the microbe survive and compete with other species for resources in the soil; take up nutrients released by plant roots; and move toward, adhere to, and colonize poplar root tissues. The microbes also have genes that provide benefits for the plant, including: genes that may help confer drought resistance and the ability to coexist with toxic metals; genes that produce antimicrobial agents that protect plants from fungal and bacterial infections; and genes that produce plant-growth enhancing “phytohormones” and precursors that poplar cannot produce on its own.

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