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. 2015 Aug 18;112(33):10270-7.
doi: 10.1073/pnas.1421389112. Epub 2015 Apr 16.

Endosymbiosis and its implications for evolutionary theory

Maureen A O'Malley  1
Affiliations

Endosymbiosis and its implications for evolutionary theory

Maureen A O'Malley. Proc Natl Acad Sci U S A. .

Abstract

Historically, conceptualizations of symbiosis and endosymbiosis have been pitted against Darwinian or neo-Darwinian evolutionary theory. In more recent times, Lynn Margulis has argued vigorously along these lines. However, there are only shallow grounds for finding Darwinian concepts or population genetic theory incompatible with endosymbiosis. But is population genetics sufficiently explanatory of endosymbiosis and its role in evolution? Population genetics "follows" genes, is replication-centric, and is concerned with vertically consistent genetic lineages. It may also have explanatory limitations with regard to macroevolution. Even so, asking whether population genetics explains endosymbiosis may have the question the wrong way around. We should instead be asking how explanatory of evolution endosymbiosis is, and exactly which features of evolution it might be explaining. This paper will discuss how metabolic innovations associated with endosymbioses can drive evolution and thus provide an explanatory account of important episodes in the history of life. Metabolic explanations are both proximate and ultimate, in the same way genetic explanations are. Endosymbioses, therefore, point evolutionary biology toward an important dimension of evolutionary explanation.

Keywords: endosymbiosis; eukaryogenesis; evolutionary theory; macroevolution; metabolism.

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Conflict of interest statement

The author declares no conflict of interest.

References

    1. Sapp J. The dynamics of symbiosis: An historical overview. Can J Bot. 2004;82(8):1046–1056.
    1. Sapp J. Evolution by Association: A History of Symbiosis. Oxford Univ Press; New York: 1994.
    1. Archibald J. One Plus One Equals One: Symbiosis and the Evolution of Complex Life. Oxford Univ Press; Oxford: 2014.
    1. Martin W, Kowallik KV. Annotated English translation of Mereschowsky’s 1905 paper “Über Natur und Ursprung der Chromatophoren im Pflanzenreiche.”. Eur J Phycol. 1999;34(3):287–295.
    1. Vucinich A. 1992. Foreword. Concepts of Symbiogenesis: A Historical and Critical Study of the Research of Russian Botanists, transl Merkel S, Coalson R, eds Margulis L, McMenamin M (Yale Univ Press, New Haven, CT), pp vii–xiii.

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