ETT — Medicago truncatula

Summary

MTR_4G088210, designated MtETT (also known as ARF3, ARF16, or MtARF2), encodes an auxin response factor containing a B3 DNA-binding domain and a pseudobarrel scaffold, and is annotated as a transcription factor that binds DNA, chromatin, and cis-regulatory regions, and mediates protein homo- and heterodimerization. Localized to the nucleus and plant-type cell wall, MtETT is associated with auxin signaling and metabolism, compound leaf and lateral root morphogenesis, nodulation, ovule and integument development, abaxial cell fate specification, climacteric fruit ripening, vegetative phase change, and geotropism. The gene is linked to numerous traits including leaf shape, root length, branch position, phyllotaxy, seed coat pattern and color, pedicel length, carpel and anther morphology, meristem identity, and auxin sensitivity. Related genes in other species connect the family to leaf adaxial-abaxial polarity, gynoecium and floral organ patterning, female germline specification, somatic embryogenesis, and self-incompatibility.