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ISSN: 2329-9002

Journal of Phylogenetics & Evolutionary Biology
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  • Review Article   
  • J Phylogen Evolution Biol 2013, Vol 1(1): 103
  • DOI: 10.4172/2329-9002.1000103

To Fuse or Not to Fuse? An Evolutionary View of Self-Recognition Systems

JĂ©rĂ©mie Brusini1,2,3*, Cécile Robin1,2 and Alain Franc1,2
1INRA, UMR 1202 BIOGECO, , 69 route d’Arcachon, F-33612 Cestas cedex, France
2Université de Bordeaux, BIOGECO, , UMR 1202, F-33400 Talence, France
3Department of Ecology and Evolutionary Biology, University of California, Santa Cruz, 1156 High Street, Santa Cruz, CA 95064, USA
*Corresponding Author : JĂ©rĂ©mie Brusini, Department of Ecology and Evolutionary Biology, University of California, Santa Cruz, 1156 High Street, Santa Cruz, CA 95064, USA, Email: [email protected]

Received Date: Feb 05, 2013 / Accepted Date: Mar 12, 2013 / Published Date: Mar 19, 2013

Abstract

Self-recognition systems preventing chimera formation following somatic fusion between members of the same species have evolved only in certain phyla (e.g., fungi, cnidarians, poriferans, bryozoans, urochordates). We present here some of the biological features common to fungi and colonial marine invertebrates, which may have driven the evolution of such self-recognition systems. We conclude that the evolution of self-recognition mechanisms in fusible organisms is more likely to result from a complex trade-off between selection pressures linked with a gregariousness and sessile way of life. This trade-off also raises the question of how extrinsic interactions between a group of cooperative cells and its direct environment may have driven the evolution towards a form of individuality, via the emergence self-recognition systems in fusible organisms. Gregariousness and sessility being two features intrinsically associated emergence of multicellularity, somatic incompatibility systems could then be considered as one of the first expressions of individuality in early multicellular organisms.

Keywords: Somatic fusion; Fungi; Colonial marine organisms; Gregarious; Sessile; Coloniality; Individuality; Evolution; Chimera; Somatic incompatibility; Vegetative incompatibility; Self recognition; Individual

Citation: Brusini J, Robin C, Franc A (2013) To Fuse or Not to Fuse? An Evolutionary View of Self-Recognition Systems. J Phylogen Evolution Biol 1: 103. Doi: 10.4172/2329-9002.1000103

Copyright: © 2013 Brusini J, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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