BHLH — Brachypodium distachyon

Summary

BdRHD6 (BdBHLH, BRADI_2G01000V3) encodes a basic helix-loop-helix (bHLH) transcription factor that binds RNA polymerase II cis-regulatory regions and exhibits DNA-binding and protein dimerization activities. In Brachypodium distachyon, this gene is associated with root hair cell differentiation, development, and tip growth, as well as regulation of flowering under both short-day and long-day photoperiods, secondary shoot formation, asymmetric cell division, and cell development. It is linked to root hair initiation, elongation, formation, and growth, ABA sensitivity and signaling, phosphorus acquisition, and seed longevity. The protein localizes to the nucleus and mitochondria. Studies of related genes in other species connect the family to root hair density and length, phosphorus content and uptake, grain weight, plant height, seedling vigor, panicle length, lateral root number, auxin content, and abscisic acid sensitivity.