PlantTFDB
Plant Transcription Factor Database
v4.0
Previous version: v1.0, v2.0, v3.0
Zea mays
GRF Family
Species TF ID Description
GRMZM2G004619_P01GRF family protein
GRMZM2G018414_P01GRF family protein
GRMZM2G018414_P02GRF family protein
GRMZM2G034876_P01GRF family protein
GRMZM2G034876_P02GRF family protein
GRMZM2G034876_P03GRF family protein
GRMZM2G041223_P01GRF family protein
GRMZM2G045977_P01GRF family protein
GRMZM2G067743_P02GRF family protein
GRMZM2G067743_P03GRF family protein
GRMZM2G096709_P01GRF family protein
GRMZM2G098594_P01GRF family protein
GRMZM2G098594_P02GRF family protein
GRMZM2G098594_P06GRF family protein
GRMZM2G099862_P01GRF family protein
GRMZM2G099862_P02GRF family protein
GRMZM2G099862_P03GRF family protein
GRMZM2G099862_P04GRF family protein
GRMZM2G105335_P01GRF family protein
GRMZM2G105335_P02GRF family protein
GRMZM2G124566_P01GRF family protein
GRMZM2G124566_P02GRF family protein
GRMZM2G129147_P01GRF family protein
GRMZM2G178261_P01GRF family protein
GRMZM2G178261_P02GRF family protein
GRMZM2G178261_P03GRF family protein
GRMZM2G178261_P04GRF family protein
GRMZM5G850129_P01GRF family protein
GRMZM5G850129_P02GRF family protein
GRMZM5G850129_P03GRF family protein
GRMZM5G850129_P04GRF family protein
GRMZM5G853392_P03GRF 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