May be involved in the brassinosteroids (BRs) signaling pathway and regulate the growth and development of rosette leaves (PubMed:28887625). Seems to prevent over development of leaves and inflorescence stems (PubMed:12012249). Highly expressed in stems, rosette leaves and siliques, and moderately expressed in roots, cauline leaves and flower (PubMed:28887625). Detected at low levels in seeds (PubMed:28887625). Repressed by brassinosteroids (BRs) such as brassinolide and 24-epi-brassinolide in a BRI1-dependent manner (PubMed:12012249). Induced rapidly but transiently induced by chitin, a fungal pathogen elicitor (PubMed:12012249). Vigorous plants with thick inflorescence stems and enlarged leaves; more rounded tip in rosette leaves and more serrated cauline leaves. Belongs to the RING-type zinc finger family.