Plant Transcription Factor Database
Previous version: v3.0
Brassica rapa
GRF Family
Species TF ID Description
XP_009102342.1GRF family protein
XP_009115989.1GRF family protein
XP_009117339.1GRF family protein
XP_009125239.1GRF family protein
XP_009127147.1GRF family protein
XP_009127148.1GRF family protein
XP_009133081.1GRF family protein
XP_009133704.1GRF family protein
XP_009133993.1GRF family protein
XP_009135347.1GRF family protein
XP_009135348.1GRF family protein
XP_009137420.1GRF family protein
XP_009137421.1GRF family protein
XP_009137422.1GRF family protein
XP_009138528.1GRF family protein
XP_009140632.1GRF family protein
XP_009142342.1GRF family protein
XP_009143588.1GRF family protein
XP_009146430.1GRF family protein
XP_009148749.1GRF family protein
XP_009148750.1GRF family protein
GRF Family Introduction

Previously, we identified a novel rice gene, GROWTH-REGULATING FACTOR1 (OsGRF1), which encodes a putative transcription factor that appears to play a regulatory role in stem elongation. We now describe the GRF gene family of Arabidopsis thaliana (AtGRF), which comprises nine members. The deduced AtGRF proteins contain the same characteristic regions--the QLQ (Gln, Leu, Gln) and WRC (Trp, Arg, Cys) domains--as do OsGRF1 and related proteins in rice, as well as features indicating a function in transcriptional regulation. Most of the AtGRF genes are strongly expressed in actively growing and developing tissues, such as shoot tips, flower buds, and roots, but weakly in mature stem and leaf tissues. Overexpression of AtGRF1 and AtGRF2 resulted in larger leaves and cotyledons, as well as in delayed bolting of the inflorescence stem when compared to wild-type plants. In contrast, triple insertional null mutants of AtGRF1-AtGRF3 had smaller leaves and cotyledons, whereas single mutants displayed no changes in phenotype and double mutants displayed only minor ones. The alteration of leaf growth in overexpressors and triple mutants was based on an increase or decrease in cell size, respectively. These results indicate that AtGRF proteins play a role in the regulation of cell expansion in leaf and cotyledon tissues.

Kim JH, Choi D, Kende H.
The AtGRF family of putative transcription factors is involved in leaf and cotyledon growth in Arabidopsis.
Plant J. 2003 Oct;36(1):94-104.
PMID: 12974814