Plant AT-rich sequence and zinc-binding proteins (PLATZ) are zinc dependant DNA binding proteins. They bind to AT rich sequences and functions in transcriptional repression [1]. Included in this family is the protein RGF1 INDUCIBLE TRANSCRIPTION FACTOR 1 (RITF1), a transcription factor that plays a central role in mediating RGF1 hormone peptide signalling, leading to the production of reactive oxygen species (ROS) in roots to modulate meristem size and root growth, probably via oxidative post-translational modification of the transcription factor PLETHORA [2].

1: A novel class of plant-specific zinc-dependent DNA-binding protein that binds to A/T-rich DNA sequences. Nagano Y, Furuhashi H, Inaba T, Sasaki Y; Nucleic Acids Res. 2001;29:4097-4105. PMID:11600698

2: RGF1 controls root meristem size through ROS signalling. Yamada M, Han X, Benfey PN; Nature. 2020;577:85-88. PMID:31801996