PlantRegMap/PlantTFDB v5.0
Plant Transcription Factor Database
Glycine max
ARR-B Family
Species TF ID Description
Glyma.01G200800.1.pARR-B family protein
Glyma.01G200800.2.pARR-B family protein
Glyma.02G085900.1.pARR-B family protein
Glyma.02G085900.2.pARR-B family protein
Glyma.04G062500.1.pARR-B family protein
Glyma.05G070200.1.pARR-B family protein
Glyma.05G070200.2.pARR-B family protein
Glyma.05G115400.1.pARR-B family protein
Glyma.05G144500.1.pARR-B family protein
Glyma.05G144500.2.pARR-B family protein
Glyma.05G144500.3.pARR-B family protein
Glyma.05G239800.1.pARR-B family protein
Glyma.06G063500.1.pARR-B family protein
Glyma.07G079000.1.pARR-B family protein
Glyma.07G079000.2.pARR-B family protein
Glyma.07G171200.1.pARR-B family protein
Glyma.07G171200.2.pARR-B family protein
Glyma.07G243300.1.pARR-B family protein
Glyma.08G046700.1.pARR-B family protein
Glyma.08G046800.1.pARR-B family protein
Glyma.08G100900.1.pARR-B family protein
Glyma.08G100900.2.pARR-B family protein
Glyma.09G040000.1.pARR-B family protein
Glyma.09G040000.2.pARR-B family protein
Glyma.09G098600.1.pARR-B family protein
Glyma.09G098600.2.pARR-B family protein
Glyma.10G101000.1.pARR-B family protein
Glyma.11G041300.1.pARR-B family protein
Glyma.11G246400.1.pARR-B family protein
Glyma.11G246400.2.pARR-B family protein
Glyma.11G246400.3.pARR-B family protein
Glyma.11G246400.4.pARR-B family protein
Glyma.11G246400.5.pARR-B family protein
Glyma.11G246400.6.pARR-B family protein
Glyma.13G155400.1.pARR-B family protein
Glyma.13G155400.2.pARR-B family protein
Glyma.14G110600.1.pARR-B family protein
Glyma.14G110600.2.pARR-B family protein
Glyma.15G145200.1.pARR-B family protein
Glyma.15G145200.2.pARR-B family protein
Glyma.15G145200.3.pARR-B family protein
Glyma.15G145200.4.pARR-B family protein
Glyma.15G206200.1.pARR-B family protein
Glyma.15G206200.2.pARR-B family protein
Glyma.16G198800.1.pARR-B family protein
Glyma.17G030600.1.pARR-B family protein
Glyma.17G076000.1.pARR-B family protein
Glyma.17G076000.3.pARR-B family protein
Glyma.17G076000.4.pARR-B family protein
Glyma.17G152800.1.pARR-B family protein
Glyma.17G217100.1.pARR-B family protein
Glyma.18G010800.1.pARR-B family protein
Glyma.19G047900.1.pARR-B family protein
Glyma.19G049400.1.pARR-B family protein
Glyma.19G049400.2.pARR-B family protein
ARR-B Family Introduction

The Arabidopsis genome codes for 22 response regulators (ARRs), 12 of which contain a Myb-like DNA binding domain called ARRM (type B). The remainder (type A) possess no apparent functional unit other than a signal receiver domain containing two aspartate and one lysine residues (DDK) at invariant positions, and their genes are transcriptionally induced by cytokinins without de novo protein synthesis. The type B members, ARR1 and ARR2, bind DNA in a sequence-specific manner and work as transcriptional activators.

Here we present evidence that ARR1 mediates a cytokinin signal, probably through its NH2-terminal signal receiver domain, and transactivates ARR6, which is immediately responsive to cytokinins. A paralogous response regulator, ARR2, shows almost identical characteristics to ARR1, suggesting a functional overlap. Residual cytokinin responses observed with the arr1-1 mutant may have been provided by ARR2. In addition to ARR6, other type A member genes, including ARR4, ARR5, ARR7, ARR8, and ARR9, were also activated by DEX at various levels in 35S::ARR1DDK::GR plants, suggesting that all the immediate cytokinin-responsive genes belonging to this group are directly activated by ARR1. Also, other cytokinin-responsive genes whose promoter regions contain the ARR1 recognition sequences are possibly transactivated by ARR1. A screening for ARR1 target genes using transgenic 35S::ARR1-DDK::GR plants will shed light on the whole view of the early cytokinin signal transduction pathway. We conclude that ARR1 is a principal transcription factor-type response regulator that is involved in an early step of cytokinin signal transduction, possibly as a partner of the sensor histidine kinase CRE1.

Hiroe Sakai, Takashi Honma, Takashi Aoyama, Shusei Sato, Tomohiko Kato, Satoshi Tabata, Atsuhiro Oka
ARR1, a Transcription Factor for Genes Immediately Responsive to Cytokinins
Science, Vol 294, Issue 5546, 1519-1521, 16 November 2001