PLANT DEDIFFERENTIATION. “In response to specific environmental signals, cells acquire competence to switch fate which is accomplished by going through a dedifferentiation process followed by the implementation of a new developmental pathway. This sequence of events is accompanied by changes at the chromatin level and reprogramming of gene expression, highlighting the central role of epigenetic regulation in these processes.”
http://jxb.oxfordjournals.org/content/62/11/3713.full