!style="background: #dedefa;" | repression<ref>{{Cite journal|last1=Liu|first1=Yuhao|last2=Liu|first2=Kunpeng|last3=Yin|first3=Liufan|last4=Yu|first4=Yu|last5=Qi|first5=Ji|last6=Shen|first6=Wen-Hui|last7=Zhu|first7=Jun|last8=Zhang|first8=Yijing|last9=Dong|first9=Aiwu|date=2019-07-02|title=H3K4me2 functions as a repressive epigenetic mark in plants|journal=Epigenetics & Chromatin|volume=12|issue=1|pages=40|doi=10.1186/s13072-019-0285-6|issn=1756-8935|pmc=6604379|pmid=31266517}}</ref>