A newly discovered bacterial species, Candidatus Celerinatantimonas neptuna, lives in the roots of a marine plant called Neptune grass. Ca. C. neptuna takes in nitrogen from the environment and converts it to ammonium, which it uses to make amino acids. The bacteria share both ammonium and amino acids with the seagrass, which provides sugar and GABA in exchange.
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This article was featured in March 2022, Issue 2 of the digest