ARF8 (TRAESCS2B02G578500) — triticum aestivum

Summary

TRAESCS2B02G578500, designated TaARF8 (also known as ARF12 or ARF8) on bread wheat chromosome 2B, encodes an auxin response factor containing B3 DNA-binding, AUX/IAA, and PB1-like domains. The product localises to the nucleus and binds DNA and transcription cis-regulatory regions. TaARF8 is associated with male sterility, anther development, root system development, lateral root development, meristem initiation and maintenance, flower morphogenesis, callus formation, and anthocyanin accumulation in response to UV light. It is linked to grain number, grain weight per spike, grain yield per plant, harvest index, grain protein content, starch content, leaf width and length, flag leaf width, shoot and root fresh and dry weight, root volume, days to heading and flowering, maturity, stem rust and stripe rust disease responses, auxin and IAA content, and self-incompatibility. Studies of related genes in other species link the family to grain size, grain filling, root development, iron and phosphate homeostasis, and brassinosteroid signaling.