HiChIP experiments were performed on shoots and roots of 14-d-old seedlings using the same procedure as in Concia et al. (2020) (link) with either anti-H3K9ac (MilliporeSigma 07–352) or anti-H3K27me3 (Sigma-Aldrich 07–449). The quality of the libraries was assessed with Agilent 2100 Bioanalyzer (Agilent), and the libraries were subjected to 2 × 75 bp paired-end high-throughput sequencing by NextSeq 500 (Illumina).