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FLOWERING INITIATION AND METHYLATION OF DNA IN ARABIDOPSIS

Wim J.J. Soppe and Maarten Koornneef
Flowering Newsletter
No. 30 (NOVEMBER 2000), pp. 3-7
Published by: Oxford University Press
Stable URL: http://www.jstor.org/stable/43008406
Page Count: 5
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Abstract

The change of the methylation status of DNA by vernalisation has been suggested as a mechanism that can explain the epigenetic nature of such a cold treatment in the initiation of flowering. Reduction of the methylation status by genetic and pharmaceutical tools produced plants with altered flowering time but did not reveal which are the genes that are directly affected by methylation changes. The recently cloned FWA gene revealed another link between methylation and flowering, because this repressor of flowering time was found not to be expressed in the WT but only in the fwa mutant, where expression and late flowering was correlated with hypomethylation of a region in the 5' end of the FWA homeodomain gene.

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