PlantRegMap/PlantTFDB v5.0
Plant Transcription Factor Database
Previous version: v3.0 v4.0
Tarenaya hassleriana
GRF Family
Species TF ID Description
XP_010520938.1GRF family protein
XP_010523694.1GRF family protein
XP_010523695.1GRF family protein
XP_010526698.1GRF family protein
XP_010526699.1GRF family protein
XP_010527780.1GRF family protein
XP_010527788.1GRF family protein
XP_010528591.1GRF family protein
XP_010528592.1GRF family protein
XP_010528594.1GRF family protein
XP_010530421.1GRF family protein
XP_010531313.1GRF family protein
XP_010533032.1GRF family protein
XP_010534927.1GRF family protein
XP_010541983.1GRF family protein
XP_010548469.1GRF family protein
XP_010552235.1GRF family protein
XP_010552236.1GRF family protein
XP_010553336.1GRF family protein
XP_010553871.1GRF family protein
XP_010553873.1GRF family protein
XP_010556485.1GRF 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