Plant Transcription Factor Database
Previous version: v3.0
Populus euphratica
GRF Family
Species TF ID Description
CCG001468.1GRF family protein
CCG003652.1GRF family protein
CCG006318.1GRF family protein
CCG010577.1GRF family protein
CCG011804.2GRF family protein
CCG014363.1GRF family protein
CCG014365.1GRF family protein
CCG015382.1GRF family protein
CCG016350.1GRF family protein
CCG021012.1GRF family protein
CCG021329.1GRF family protein
CCG022471.1GRF family protein
CCG023815.1GRF family protein
CCG024408.1GRF family protein
CCG024718.1GRF family protein
CCG027670.1GRF family protein
CCG029619.1GRF family protein
CCG031268.1GRF family protein
CCG033904.1GRF family protein
CCG034010.1GRF 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