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Basic Information
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CGSNL Gene Symbol
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FLO27
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Gene Symbol Synonym
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OsbZIP58, bZIP58, OsEnS-92, OsSMF1, SMF1, OsRISBZ1, RISBZ1/bZIP58, RISBZ1, OsFLO27
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CGSNL Gene Name
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FLOURY ENDOSPERM 27
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Gene Name Synonym
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bZIP transcription factor 58, rice seed b-Zipper 1, endosperm-specific gene 92, seed maturation factor 1, rice seed basic leucine zipper 1, RICE SEED bZIP1
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Protein Name
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RICE SEED B-ZIPPER 1
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Allele
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osbzip58, osbzip58-1, osbzip58-2, risbz1, flo27
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Chromosome No.
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7
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Explanation
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AB053472, AB053475, Q9AR01. AB574188. bZIP Activator. endosperm-specific basic Leu zipper (bZIP) trans-activator. an ortholog of maize O2. GO:2000034: regulation of seed maturation. GO:1905898: positive regulation of response to endoplasmic reticulum stress. GO:1900102: negative regulation of endoplasmic reticulum unfolded protein response. TO:0000975: grain width. TO:0000919: grain weight.
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Trait Class
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Seed - Morphological traits - Endosperm
Seed - Morphological traits - Grain shape
Seed - Physiological traits - Dormancy
Seed - Physiological traits - Storage substances
Tolerance and resistance - Stress tolerance
Character as QTL - Grain quality
Other
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Expression
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Sequence/Locus
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cDNA Accession No.
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AK241994
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MSU ID
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LOC_Os07g08420.1
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RAP ID
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Os07g0182000
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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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Link to INSD Accession List
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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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Sun Q., Duan E., Jing R., Ren Y., Xu H., Gu C., Lv W., Jiang X., Chen R., Wang Q., Zhang Y., Zhang R., Xu H., Zhang Y., Chi J., Fu Y., Zhu Y., Zhang Y., Zhang B., Teng X., Dong H., Yang X., Zhou L., Tian Y., Liu X., Liu S., Guo X., Lei C., Jiang L., Wang Y., Wan J.
Plant Commun 2025 6(9) 101458
The bZIP transcription factor RISBZ1 balances grain filling and ER stress response in rice grains.
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Qiu F., Zheng Y., Lin Y., Woldegiorgis S.T., Xu S., Feng C., Huang G., Shen H., Xu Y., Kabore M.A.F., Ai Y., Liu W., He H.
Int J Mol Sci 2023 24(6)
Integrated ATAC-Seq and RNA-Seq Data Analysis to Reveal <i>OsbZIP14</i> Function in Rice in Response to Heat Stress.
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Kim J.S., Chae S., Jun K.M., Lee G.S., Jeon J.S., Kim K.D., Kim Y.K.
Planta 2021 253(2) 40
Rice protein-binding microarrays: a tool to detect cis-acting elements near promoter regions in rice.
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Zhang H., Jang S.G., Lar S.M., Lee A.R., Cao F.Y., Seo J., Kwon S.W.
Plants (Basel) 2021 10(6)
Genome-Wide Identification and Genetic Variations of the starch synthase Gene Family in Rice.
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Paul P., Dhatt B.K., Miller M., Folsom J.J., Wang Z., Krassovskaya I., Liu K., Sandhu J., Yu H., Zhang C., Obata T., Staswick P., Walia H.
Plant Physiol. 2020 182(2) 933-948
<i>MADS78</i> and <i>MADS79</i> Are Essential Regulators of Early Seed Development in Rice.
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Lang Z., Gong Z.
Proc. Natl. Acad. Sci. U.S.A. 2018 115(46) 11659-11660
A role of <i>OsROS1</i> in aleurone development and nutrient improvement in rice.
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Liu J., Wu X., Yao X., Yu R., Larkin P.J., Liu C.M.
Proc. Natl. Acad. Sci. U.S.A. 2018 115(44) 11327-11332
Mutations in the DNA demethylase <i>OsROS1</i> result in a thickened aleurone and improved nutritional value in rice grains.
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Kim J.S., Chae S., Jun K.M., Pahk Y.M., Lee T.H., Chung P.J., Kim Y.K., Nahm B.H.
Rice (N Y) 2017 10(1) 16
Genome-wide identification of grain filling genes regulated by the OsSMF1 transcription factor in rice.
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Wu J., Zhu C., Pang J., Zhang X., Yang C., Xia G., Tian Y., He C.
Plant J. 2014
OsLOL1, a C2C2-type zinc finger protein, interacts with OsbZIP58 to promote seed germination through the modulation of GA biosynthesis in Oryza sativa.
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Chen Y., Sun A., Wang M., Zhu Z., Ouwerkerk P.B.
Plant Mol. Biol. 2014 84(6) 621-34
Functions of the CCCH type zinc finger protein OsGZF1 in regulation of the seed storage protein GluB-1 from rice.
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Zhang X., Rerksiri W., Liu A., Zhou X., Xiong H., Xiang J., Chen X., Xiong X.
Gene 2013 530(2) 185-92
Transcriptome profile reveals heat response mechanism at molecular and metabolic levels in rice flag leaf.
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Wang J.C., Xu H., Zhu Y., Liu Q.Q., Cai X.L.
J. Exp. Bot. 2013 64(11) 3453-66
OsbZIP58, a basic leucine zipper transcription factor, regulates starch biosynthesis in rice endosperm.
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Nie D.M., Ouyang Y.D., Wang X., Zhou W., Hu C.G., Yao J.
Gene 2013 530(2) 236-47
Genome-wide analysis of endosperm-specific genes in rice.
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Kawakatsu T., Takaiwa F.
Plant Cell Physiol. 2010 51(12) 1964-1974
Differences in transcriptional regulatory mechanisms functioning for free lysine content and seed storage protein accumulation in rice grain.
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Kawakatsu T,Yamamoto MP,Touno SM,Yasuda H,Takaiwa F
Plant J. 2009 59 908-20
Compensation and interaction between RISBZ1 and RPBF during grain filling in rice.
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Nijhawan A,Jain M,Tyagi AK,Khurana JP
Plant Physiol. 2008 146 333-50
Genomic survey and gene expression analysis of the basic leucine zipper transcription factor family in rice.
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Yamamoto MP, Onodera Y, Touno SM, Takaiwa F.
Plant Physiol. 2006 141(4) 1694-1707
Synergism between RPBF Dof and RISBZ1 bZIP activators in the regulation of rice seed expression genes.
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Onodera,Y., Suzuki,A., Wu,C., Washida,H. and Takaiwa,F.
J. Biol. Chem. 2001 276(17) 14139-14152
A rice functional transcriptional activator, RISBZ1, responsible for endosperm-specific expression of storage protein genes through GCN4 motif
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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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regulation of starch biosynthetic process( GO:0010581 )
endoplasmic reticulum unfolded protein response( GO:0030968 )
endosperm development( GO:0009960 )
nucleus( GO:0005634 )
response to endoplasmic reticulum stress( GO:0034976 )
transcription factor activity( GO:0003700 )
sequence-specific DNA binding( GO:0043565 )
response to heat( GO:0009408 )
seed germination( GO:0009845 )
regulation of gibberellin biosynthetic process( GO:0010371 )
programmed cell death( GO:0012501 )
seed maturation( GO:0010431 )
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Trait Ontology
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protein composition related trait( TO:0000490 )
temperature response trait( TO:0000432 )
seed maturation( TO:0002661 )
amino acid content( TO:0002673 )
heat tolerance( TO:0000259 )
endosperm storage protein content( TO:0002653 )
floury endosperm( TO:0000104 )
endosperm color( TO:0000487 )
shrunken endosperm( TO:0000100 )
starch grain shape( TO:0002656 )
starch content( TO:0000696 )
amylose content( TO:0000196 )
grain length( TO:0000734 )
grain width( TO:0000402 )
grain thickness( TO:0000399 )
grain weight( TO:0000590 )
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Plant Ontology
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aleurone layer( PO:0005360 )
0 seed germination stage( PO:0007057 )
seed maturation stage( PO:0007632 )
endosperm( PO:0009089 )
endosperm development stage( PO:0007633 )
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Related Strains
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Phenotype images
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Last updated
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Nov 19, 2025
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Update info.