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Reversible switching between epigenetic states in honeybee behavioral subcastes


In honeybee societies, distinct caste phenotypes are created from the same genotype, suggesting a role for epigenetics in deriving these behaviorally different phenotypes. We found no differences in DNA methylation between irreversible worker and queen castes, but substantial differences between nurses and forager subcastes. Reverting foragers back to nurses reestablished methylation levels for a majority of genes and provides, to the best of our knowledge, the first evidence in any organism of reversible epigenetic changes associated with behavior.

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Figure 1: DNA methylation changes were found between nurses and foragers, but not between queens and workers.
Figure 2: DNA methylation distinguishes nurses, foragers and reverted nurses.

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We thank E. Fennern, N. Baker, K. Flores and O. Kaftanoglu for assistance with colonies, bees and brain dissections, and A. Doi for reviewing the manuscript. We thank G. Klein for serving as scientific schadchen to A.P.F. and G.V.A. after hearing them lecture on different occasions at I. Ernberg's “What is Life” series at the Karolinska Institute, without which this research would not have taken place. G.V.A. was funded by the Research Council of Norway #191699 and the PEW Charitable Trust #2009-000068-001. A.P.F. was funded by US National Institutes of Health grant 1DP1OD008324.

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Authors and Affiliations



B.R.H. performed genome-scale, gene-specific DNA methylation analysis and performed gene expression analysis. F.W. raised bees and manipulated hives for reversion experiment, and collected bees and dissected brains. R.I., M.J.A., K.D.H., B.L. and B.R.H. performed statistical analysis. B.R.H. and M.J.A. generated microarray data sets. B.R.H., B.L. and K.D.H. generated WGBS and RNAseq data sets. A.P.F. and G.V.A. conceived, designed and oversaw the experiments. A.P.F., B.R.H. and G.V.A. wrote the paper with the assistance of K.D.H., M.J.A., B.L. and F.W.

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Correspondence to Gro V Amdam or Andrew P Feinberg.

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The authors declare no competing financial interests.

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Herb, B., Wolschin, F., Hansen, K. et al. Reversible switching between epigenetic states in honeybee behavioral subcastes. Nat Neurosci 15, 1371–1373 (2012).

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