PNAS paper on evolution of epigenetic variants published by Hollister, Smith, Guo, Ott, Weigel & Gaut.
Just out in PNAS: Transposable elements and small RNAs contribute to gene expression divergence between Arabidopsis thaliana and Arabidopsis lyrata, by Hollister, Smith, Guo, Ott, Weigel & Gaut.