New Rhizobia-diatom symbiosis solves long-standing marine mystery

Scientists have discovered a new partnership between a marine diatom and a bacterium that can account for a large share of nitrogen fixation in vast regions of the ocean. The newly-discovered bacterial symbiont is closely related to the nitrogen-fixing Rhizobia which live in partnership with many crop plants and may open up new avenues to engineer nitrogen-fixing plants.

https://www.sciencedaily.com/releases/2024/05/240509124708.htm