Mutualistic symbioses are symbioses that are beneficial to both (or all) symbiotic partners; they are intricate, complex and variable in their interactions. Widely distributed both geographically and taxonomically, they play an important ecological and evolutionary role in the biosphere.
Keywords: symbiosis; mutualism; parasite; lichens; legumes; symbiont; host; endosymbiont; bioluminescence; mycorrhizae; endophytes




