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Published on: July 12, 2012
The genetic basis of epigenetic variation and its consequences for adaptation
1Institut de Biologie de l'École Normale Supérieure (IBENS), ENS, PSL University, CNRS, 46 rue d'Ulm, Paris 75005, France.
Abstract:
Recent population genomic studies in plants have shed new light on natural epigenetic variation by identifying key genetic determinants, "trans modifiers," that influence epigenetic states genome-wide and their interplay with environmental factors. Here, we review this progress by focusing on the epigenetic control of transposition and life-cycle transitions to highlight the ecological consequences of this genetic architecture and its evolutionary significance. This knowledge provides new opportunities to address long-standing questions about the establishment of environment-associated epigenetic variation and its relevance in adaptation.
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