Planta (2017) 246:553–566 DOI 10.1007/s00425-017-2713-9 ORIGINAL ARTICLE The epigenetic memory of temperature during embryogenesis modiﬁes the expression of bud burst-related genes in Norway spruce epitypes 1,2 1 3 3 • • • • Elena Carneros Igor Yakovlev Marcos Viejo Jorunn E. Olsen Carl Gunnar Fossdal Received: 13 February 2017 / Accepted: 23 May 2017 / Published online: 2 June 2017 The Author(s) 2017. This article is an open access publication Abstract different epitype-inducing temperatures, before and during Main conclusion Epigenetic memory affects the timing spring bud burst. Earlier ﬂushing of epitypes originating of bud burst phenology and the expression of bud burst- from embryos developed at 18 C as compared to 28 C, related genes in genetically identical Norway spruce was associated with differential expression of these genes epitypes in a manner usually associated with ecotypes. between epitypes and between buds and last year’s needles. The majority of these genes showed signiﬁcantly different In Norway spruce, a temperature-dependent epigenetic expressions between epitypes in at least one time point. memory established during embryogenesis affects the The general trend in DHN expression pattern in buds timing of bud burst and bud set in a reproducible and showed the expected reduction in
Planta – Springer Journals
Published: Jun 2, 2017
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