Table of Contents
International Journal of Evolutionary Biology
Volume 2012, Article ID 698198, 12 pages
http://dx.doi.org/10.1155/2012/698198
Review Article

Evolutionary Implications of Mechanistic Models of TE-Mediated Hybrid Incompatibility

Department of Biology, Indiana University, 1003 Third Street, Bloomington, IN 47405, USA

Received 16 July 2011; Accepted 16 November 2011

Academic Editor: Chau-Ti Ting

Copyright © 2012 Dean M. Castillo and Leonie C. Moyle. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

New models of TE repression in plants (specifically Arabidopsis) have suggested specific mechanisms by which TE misregulation in hybrids might result in the expression of hybrid inviability. If true, these models suggest as yet undescribed consequences for (1) mechanistic connections between hybrid problems expressed at different postzygotic stages (e.g., inviability versus sterility), (2) the predicted strength, stage, and direction of isolation between diverging lineages that differ in TE activity, and (3) the association between species attributes that influence TE dynamics (e.g., mode of reproduction, geographical structure) and the rate at which they could accumulate incompatibilities. In this paper, we explore these implications and outline future empirical directions for generating data necessary to evaluate them.