• IntroductionHolobiont
  • Overview
  • History of the holobiont concept
  • Holobiont components
  • The holobiont phenotypePlantsMarine
  • Effects of stressors
  • Holobiomics
  • Controversy
  • See also
  • References
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Holobiont

Host and associated species living as a discrete ecological unit / From Wikipedia, the free encyclopedia

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A holobiont is an assemblage of a host and the many other species living in or around it, which together form a discrete ecological unit through symbiosis,[2] though there is controversy over this discreteness. The components of a holobiont are individual species or bionts, while the combined genome of all bionts is the hologenome. The holobiont concept was initially introduced by the German theoretical biologist Adolf Meyer-Abich in 1943,[3] and then apparently independently by Dr. Lynn Margulis in her 1991 book Symbiosis as a Source of Evolutionary Innovation.[2] The concept has evolved since the original formulations.[4] Holobionts include the host, virome, microbiome, and any other organisms which contribute in some way to the functioning of the whole.[5][6] Well-studied holobionts include reef-building corals and humans.[7][8]

Microbiome relationships mirror host evolution. The more distantly related species are, the more distinct the composition of their cognate microbiomes, as reflected in the overlaid phylogeny of wasps and their microbiota.[1]
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