Specialized structures in plants and animals help attract and mediate communication with bacterial symbionts.

A seagrass relies on symbiotic bacteria inside its roots to fix nitrogen. This is the first time scientists have demonstrated that this relationship occurs in a marine plant.

Researchers can now explain how some marine plants obtain their nitrogen.

Scientists have documented examples of corals “remembering” prior exposure to heat stress in the field, and are now simulating these phenomena in the lab to better understand their cellular and molecular underpinnings.

Corals that previously experienced heat stress respond better the next time around. Researchers are trying to figure out how, and hope to one day take advantage of the phenomenon to improve coral restoration efforts. 

The endosymbiont Coxiella affects tick serotonin production and subsequent blood-feeding behavior, a study finds.

Having two different endosymbionts may allow the ciliate Pseudoblepharisma tenue to live in both oxygen-rich and oxygen-poor zones of the muddy bogs of southern Germany.

Researchers uncover the “body-snatching” tactics of fungi that flourish immediately after wildfires.

A newly identified group of viruses may help suppress eukaryotes’ immune response and promote tolerance of endosymbiotic bacteria.

Researchers suggest the viruses can help endosymbiotic bacteria get along with their hosts.

Contrary to some hypotheses, the organelles did not descend from any known lineage of Alphaproteobacteria, researchers find.

A new study reports which types of corals make the most of the sunlight they receive. 

Spotted salamander (Ambystoma maculatum) embryos are tinted green by the oxygen-producing algae (Oophila amblystomatis) that grow inside.

Did endosymbiosis—and the innovations in membrane bioenergetics it engendered—make it possible for eukaryotic life to evolve?

Meet some of the people featured in the December 2014 issue of The Scientist.

In Chapter 7, “Green Evolution, Green Revolution,” author John Archibald describes how endosymbiosis helped color the Earth in a verdant hue.

What researchers are learning as they sequence, map, and decode species’ genomes

A chance encounter with a crab apple tree leads to the discovery of a new bacterial species and clues to the evolution of insect endosymbionts.

How plastid genetic information survived (or didn’t) the endosymbiotic experience