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Now that we have propagated the axenic Sporobolus alterniflorus partner, and we have cultured sulfate reducers and sulfur oxidizers, we are developing desktop  communities called "sym-cosms" to explore how plants and microbes interact.

 

Plants grow with their roots in hydrogel, a "transparent soil" that preserves natural root structure but, unlike marsh sediment, is transparent. This hydrogel can be produced using plant growth medium, bacterial growth medium, or a mix, and for experiments it can be held at low oxygen (hypoxic) or made oxic.