Fig. 6. Association frequency of the lac operator arrays with heterochromatic domains compared to that of flanking MGL6/F18C1 sequences. The percentage of FISH signals associated with heterochromatin in nuclei of wild type (MGL6, F18C1) and of homozygous EL702C plants without and after Dex treatment (MGL6, F18C1, lac operator) is shown. ***P<0.001 compared to the wild-type situation determined using
2 test.