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Comment
. 2017 Sep 25;42(6):563-564.
doi: 10.1016/j.devcel.2017.09.004.

No Winter Lasts Forever: Polycomb Complexes Convert Epigenetic Memory of Cold into Flowering

Jafar Sharif  1 , Haruhiko Koseki  2
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No Winter Lasts Forever: Polycomb Complexes Convert Epigenetic Memory of Cold into Flowering

Jafar Sharif et al. Dev Cell. .
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Abstract

Two recent papers in Science (Jiang and Berger, 2017 and Yang et al., 2017) reveal that an epigenetic mechanism, mediated by polycomb repressor complex 2 (PRC2), induces flowering after prolonged cold. This repression is biphasic, requiring nucleation and propagation; and, strikingly, appears to be intrinsically linked with DNA replication.

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