Interacts with the heterotrimeric G protein beta subunit GB1 and plays an significant role in GB1-dependent regulation of lateral root formation. Involved in a signaling pathway that modulates root auxin transport and auxin gradients. Acts partially by positively regulating the auxin carrier PIN2 and AUX1 (PubMed:19948787). Acts, together with GB1 as positive regulator of meristem initiation and branching. GB1 and NDL1 positively regulate basipetal inflorescence auxin transport and modulate MAX2 expression in shoots, which regulates organ and lateral meristem formation by the establishment and maintenance of auxin gradients (PubMed:24223735). Interacts with GB1. Interacts with the heterodimers formed by GB1 and GG1, or GB1 and GG2. Interacts with RGS1. Localizes in punctate cytoplasmic structures. Expressed in root vasculature, cotyledons, leaves, petals, mature stamens and pollen grains. Induced by sucrose and glucose. Down-regulated by auxin. Slight reduction in length of primary root. Belongs to the NDRG family.