A Protist Hosts Both Green Algae and Purple Bacteria Symbionts

In 1926, when he was almost 50, Kahl published a paper in which he identified, classified, and described hundreds of new species of protists. Although this particular combination of organisms is unique, symbiotic interactions “are very widespread, in any sort of aquatic ecosystem,” says Matthew Johnson, a protist ecologist at the Woods Hole Oceanographic Institute […]