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. 2014 Nov 13;5:389. doi: 10.3389/fgene.2014.00389

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Copyright © 2014 Schubert, Rudnik and Schubert.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Configurations of adjacent euchromatin segments. (A) Scheme of chromosomes 1 and 3 showing the subtelomeric and interstitial position of adjacent segments (probed by two BACs in different colors). The percentage of nuclei where the adjacent segments were found not close together in 2C and 4C leaf and root nuclei, respectively, is indicated (number of investigated homologs (2C) and of sister chromatids (4C) in parentheses). (B) The top 2C and 4C nuclei show the T25K16 and F6F3 segments, as expected, close together. In the nuclei below, the homologous segments may also be completely (arrows) or partially associated (asterisks). In addition, due to chromatin fiber movement by elongation and/or sister chromatid separation, the adjacent segments may be localized distantly from each other. (C) Similar configurations as in (B). In particular segment F16M2 appears frequently elongated.