Transcription factor involved in the regulation of root hair elongation (PubMed:20139979, PubMed:27452638). Does not seem to be a direct transcriptional target of RHD6 and RSL1 (PubMed:20139979). Involved in the regulation of root hair elongation in response to low phosphate (PubMed:29651114). Homodimer. Expressed in roots (PubMed:12679534). Expressed in root epidermal hair cells (PubMed:20139979). Induced by jasmonate (JA) treatment (PubMed:12679534, PubMed:31988260). Induced by low phosphate conditions (PubMed:29651114). Reduced length of root hairs.