PMID: 9421260Jan 8, 1998Paper

Development-dependent inheritance of 5-azacytidine-induced epimutations in triticale: analysis of rDNA expression patterns

Chromosome Research : an International Journal on the Molecular, Supramolecular and Evolutionary Aspects of Chromosome Biology
L AmadoWanda Viegas

Abstract

Genomic imprinting of rye origin rDNA sequences in triticale is modulated by DNA methylation responsible for ontogenic expression patterns of those sequences. Considering the dynamic nature of these phenomena, we evaluated the influence of plant development on the inheritance of modified rye rDNA expression patterns. DNA hypomethylation was induced in triticale by 5-azacytidine (5AC) treatments at distinct developmental stages of M1 plants, and expression patterns were analysed in M2. The activity of rye origin rRNA genes in progeny of untreated and 5AC-treated plants was evaluated by silver staining in meristematic root tip cells and in meiocytes at diplotene. In the progeny of 5AC-treated plants, a significant increase in rye rDNA expression was observed, contrasting with the residual activity in untreated plants. Significant differential effects of 5AC treatments were observed in M2 plants and correlated with the M1 plant developmental stage in which DNA hypomethylation was induced. Hypotheses to explain the origin of those differences are discussed here.

Citations

Jun 20, 2007·Annals of Botany·Keiko AkimotoHiroshi Sano
Jun 17, 2011·Journal of Genetics·Ana CarvalhoJosé Lima-Brito
Feb 3, 2005·The Plant Journal : for Cell and Molecular Biology·Nicole C Riddle, Eric J Richards
May 3, 2005·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·M A FieldesJ C L Brown
Aug 27, 2011·Journal of Genetics·Ana CarvalhoJosé Lima-Brito
Aug 29, 2013·Genetica·Ana CarvalhoJosé Lima-Brito
Nov 28, 2018·Journal of Experimental Botany·Natalia Borowska-ZuchowskaRobert Hasterok
Apr 29, 2008·Genome Génome / Conseil National De Recherches Canada·Dominika Idziak, Robert Hasterok
Aug 4, 2012·Journal of Experimental Botany·Moshe FeldmanAbraham Korol
Dec 6, 2001·Protoplasma·M Lengerova, B Vyskot
Sep 5, 2008·Annual Review of Genomics and Human Genetics·Neil A Youngson, Emma Whitelaw
Nov 24, 1999·Trends in Plant Science·C S Pikaard
Apr 19, 2007·Biochimica Et Biophysica Acta·Sasha Preuss, Craig S Pikaard

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