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Basic Information
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CGSNL Gene Symbol
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RR21
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Gene Symbol Synonym
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OsRR21, Rrb1, Orr1, OsRR19, RR19, OsRRB1, ORR1, OsRRB4, RRB4
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CGSNL Gene Name
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B-TYPE RESPONSE REGULATOR 1
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Gene Name Synonym
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B-type response regulator 1, B-type RR 1, ORYZA SATIVA RESPONSE REGULATOR 1
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Protein Name
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B-TYPE RESPONSE REGULATOR 1
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Allele
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Chromosome No.
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3
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Explanation
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BR000250, AB246780. B-type RR. OsRR19 in Ga et al. 2021, Hu et al. 2023. OsRRB4 in Chen et al. 2025.
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Trait Class
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Vegetative organ - Root
Reproductive organ - Inflorescence
Reproductive organ - panicle
Heterochrony
Tolerance and resistance - Stress tolerance
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Expression
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Sequence/Locus
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cDNA Accession No.
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AK111864
AK111899
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MSU ID
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LOC_Os03g12350.1
LOC_Os03g12350.2
LOC_Os03g12350.4
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RAP ID
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Os03g0224200
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Links
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Oryzabase Chromosome View
(
IRGSP 1.0
/
Build5
)
RAP-DB
(
IRGSP 1.0
/
Build5
)
Related IDs List (
IRGSP 1.0
/
Build5
)
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INSD Accession List
(Test version)
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-
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Map
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Locate(cM)
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Link map
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Classical linkage map
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References
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Chen R., Huang Q., Xu Y., Wang Z., Li N., Lu Y., Tao T., Hua Y., Wang G., Wang S., Wang H., Zhou Y., Xu Y., Li P., Xu C., Yang Z.
Int J Mol Sci 2025 26(5)
Comparative Genomic Analysis of the Poaceae Cytokinin Response Regulator <i>RRB</i> Gene Family and Functional Characterization of <i>OsRRB5</i> in Drought Stress Tolerance in Rice.
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Chun Y., Fang J., Savelieva E.M., Lomin S.N., Shang J., Sun Y., ZHAO J., Kumar A., Yuan S., Yao X.F., Liu C.M., Arkhipov D.V., Romanov G.A., Li X.
Plant Cell 2023
The cytokinin receptor OHK4/OsHK4 regulates inflorescence architecture in rice via an IDEAL PLANT ARCHITECTURE1/WFP-mediated positive feedback circuit.
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Hu X., Yu P., Zhang Y., Gao Z., Sun B., Wu W., Deng C., Abbas A., Hong Y., Sun L., Liu Q., Xue P., Wang B., Zhan X., Cao L., Cheng S.
J. Exp. Bot. 2023 74(5) 1501-1516
Mutation of DEFECTIVE EMBRYO SAC1 results in a low seed-setting rate in rice by regulating embryo sac development.
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Ga E., Song J., Min M.K., Ha J., Park S., Lee S.B., Lee J.Y., Kim B.G.
Int J Mol Sci 2021 22(7)
Reconstitution of Cytokinin Signaling in Rice Protoplasts.
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Zhao H., Duan K.X., Ma B., Yin C.C., Hu Y., Tao J.J., Huang Y.H., Cao W.Q., Chen H., Yang C., Zhang Z.G., He S.J., Zhang W.K., Wan X.Y., Lu T.G., Chen S.Y., Zhang J.S.
Nat Commun 2020 11(1) 518
Histidine kinase MHZ1/OsHK1 interacts with ethylene receptors to regulate root growth in rice.
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Lee S.T., Huang W.L.
Botanical Studies 2013 54
Cytokinin, auxin, and abscisic acid affects sucrose metabolism conduce to de novo shoot organogenesis in rice (Oryza sativa L.) callus
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Tsai Y.C., Weir N.R., Hill K., Zhang W., Kim H.J., Shiu S.H., Schaller G.E., Kieber J.J.
Plant Physiol. 2012 158(4) 1666-84
Characterization of genes involved in cytokinin signaling and metabolism from rice.
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Du L., Jiao F., Chu J., Jin G., Chen M., WU P.
Genomics 2007 89(6) 697-707
The two-component signal system in rice (Oryza sativa L.): a genome-wide study of cytokinin signal perception and transduction.
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G Eric Schaller, Doi K., Hwang I., Joseph J Kieber, Jitendra P Khurana, Kurata N., Mizuno T., Pareek A., Shin-Han Shiu, Wu P., Wing Kin Yip
Plant Physiol. 2007 143(2) 555-7
Nomenclature for two-component signaling elements of rice.
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Ito,Y. and Kurata,N.
Gene 2006 382 57-65
Identification and characterization of cytokinin-signalling gene families in rice.
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Pareek A, Singh A, Kumar M, Kushwaha HR, Lynn AM, Singla-Pareek SL.
Plant Physiol. 2006 142(2) 380-97
Whole-genome analysis of Oryza sativa reveals similar architecture of two-component signaling machinery with Arabidopsis.
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DB Reference
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Gramene ID
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-
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Ontologies
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Gene Ontology
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response to water deprivation( GO:0009414 )
response to cold( GO:0009409 )
response to abscisic acid stimulus( GO:0009737 )
response to jasmonic acid stimulus( GO:0009753 )
inflorescence development( GO:0010229 )
nucleus( GO:0005634 )
response to cytokinin stimulus( GO:0009735 )
regulation of transcription( GO:0045449 )
response to ethylene stimulus( GO:0009723 )
cytokinin mediated signaling( GO:0009736 )
two-component signal transduction system (phosphorelay)( GO:0000160 )
two-component response regulator activity( GO:0000156 )
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Trait Ontology
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cytokinin sensitivity( TO:0000167 )
ethylene sensitivity( TO:0000173 )
primary branch number( TO:0000547 )
inflorescence development trait( TO:0000621 )
inflorescence size( TO:0006031 )
panicle length( TO:0000040 )
secondary branch number( TO:0000557 )
jasmonic acid sensitivity( TO:0000172 )
abscisic acid sensitivity( TO:0000615 )
cold tolerance( TO:0000303 )
drought tolerance( TO:0000276 )
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Plant Ontology
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inflorescence development stage( PO:0001083 )
shoot system( PO:0009006 )
leaf( PO:0025034 )
seed( PO:0009010 )
endosperm( PO:0009089 )
seedling( PO:0008037 )
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Related Strains
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Phenotype images
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Last updated
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Jul 1, 2025
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Update info.