Another new study takes a further step toward revealing the pervasive influence microbial communities that inhabit plants and animals have on their biology. Scientists in the US have discovered that the luminous bacterium Vibrio fischeri regulates the daily rhythm of its host, the Hawaiian bobtail squid, by interacting with its clock genes.


Euprymna scolopes

V. fischeri

Vibrio fischeri

“Instead of environmental light, this animal responds and cycles in response to the luminescence from its own light organ,”