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Clonal Plants as Meta-Holobionts

Abstract : The holobiont concept defines a given organism and its associated symbionts as a potential level of selection over evolutionary time. In clonal plants, recent experiments demonstrated vertical transmission of part of the microbiota from one ramet (i.e., potentially autonomous individual) to another within the clonal network (i.e., connections by modified stems present in similar to 35% of all plants). Because of this heritability, and potentially reciprocal exchange of microbes between generations of ramets, we propose to extend the existing holobiont framework to the concept of meta-holobiont. A meta-holobiont is a network of holobionts that can exchange biomolecules and microbiota across generations, thus impacting the fitness of both biological scales: holobionts and meta-holobionts. Specifically, metaholobiont dynamics can result in sharing, specialization, and division of labor across plant clonal generations. This paper, which coins the meta-holobiont concept, is expected to stimulate discussion and to be applied beyond the context of networked clonal plants (e.g., to social insects).
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https://hal-univ-lyon1.archives-ouvertes.fr/hal-02092384
Contributor : Laurent Jonchère Connect in order to contact the contributor
Submitted on : Friday, July 3, 2020 - 4:57:35 PM
Last modification on : Friday, September 30, 2022 - 11:12:08 AM
Long-term archiving on: : Thursday, September 24, 2020 - 8:56:13 AM

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Nathan Vannier, Cendrine Mony, Anne‐kristel Bittebière, Kevin Theis, Eugene Rosenberg, et al.. Clonal Plants as Meta-Holobionts. mSystems, 2019, 4 (2), pp.e00213-18. ⟨10.1128/mSystems.00213-18⟩. ⟨hal-02092384⟩

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