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Basic Information
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CGSNL Gene Symbol
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EMF2B
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Gene Symbol Synonym
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OsEMF2b, EMF2b, GW9, OsGW9, GW9/OsEMF2b, OsPcG4, PcG4
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CGSNL Gene Name
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EMBRYONIC FLOWER 2B
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Gene Name Synonym
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EMBRYONIC FLOWER 2b, grain weight 9, Polycomb group protein 4
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Protein Name
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POLYCOMB GROUP PROTEIN 4
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Allele
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osemf2b, emf2b, gw9
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Chromosome No.
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9
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Explanation
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Q69KN0. Polycomb group protein, Suppressor of Zeste(12) homolog. a component of polycomb repression complex 2. Su(z)12 homolog. a PRC2 (Polycomb repressive complex 2) subunit. PO:0030123: panicle inflorescence. PO:0030104: caryopsis fruit.
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Trait Class
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Vegetative organ - Culm
Reproductive organ - Heading date
Seed - Morphological traits - Embryo
Seed - Morphological traits - Grain shape
Tolerance and resistance - Stress tolerance
Character as QTL - Germination
Reproductive organ - Spikelet, flower, glume, awn
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Expression
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Sequence/Locus
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cDNA Accession No.
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AK100856
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MSU ID
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LOC_Os09g13630.1
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RAP ID
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Os09g0306800
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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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Shi Z., Cao J., Li C., Liu J., Yang X., Cheng X.
Plants (Basel) 2025 14(17)
Genome-Wide Analysis of the Rice PcG Gene Family and Its Involvement in Salt Response and Development.
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Wen Y., Hu P., Fang Y., Tan Y., Wang Y., Wu H., Wang J., Wu K., Chai B., Zhu L., Zhang G., Gao Z., Ren D., Zeng D., Shen L., Dong G., Zhang Q., Li Q., Xiong G., Xue D., Qian Q., Hu J.
Plant Biotechnol. J. 2024 22(4) 915-928
GW9 determines grain size and floral organ identity in rice.
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Jia Q., Zhang X., Liu Q., Li J., Wang W., Ma X., Zhu B., Li S., Gong S., Tian J., Yuan M., Zhao Y., Zhou D.X.
Genome Biol. 2023 24(1) 198
A DNA adenine demethylase impairs PRC2-mediated repression of genes marked by a specific chromatin signature.
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Wang H., Tong X., Tang L., Wang Y., Zhao J., Li Z., Liu X., Shu Y., Yin M., Adegoke T.V., Liu W., Wang S., Xu H., Ying J., Yuan W., Yao J., Zhang J.
Plant Physiol. 2022 188(1) 460-476
RLB (RICE LATERAL BRANCH) recruits PRC2-mediated H3K27 tri-methylation on OsCKX4 to regulate lateral branching.
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Cheng X., Pan M., E Z., Zhou Y., Niu B., Chen C.
Plant Commun 2021 2(1) 100092
The maternally expressed polycomb group gene <i>OsEMF2a</i> is essential for endosperm cellularization and imprinting in rice.
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Tonosaki K., Ono A., Kunisada M., Nishino M., Nagata H., Sakamoto S., Kijima S.T., Furuumi H., Nonomura K.I., Sato Y., Ohme-Takagi M., Endo M., Comai L., Hatakeyama K., Kawakatsu T., Kinoshita T.
Plant Cell 2021 33(1) 85-103
Mutation of the imprinted gene OsEMF2a induces autonomous endosperm development and delayed cellularization in rice.
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Tang L., Xu H., Wang Y., Wang H., Li Z., Liu X., Shu Y., Li G., Liu W., Ying J., Tong X., Yao J., Xiao W., Tang S., Ni S., Zhang J.
Int J Mol Sci 2021 22(22)
OsABF1 Represses Gibberellin Biosynthesis to Regulate plant height and Seed Germination in Rice (<i>Oryza sativa</i> L.).
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Yang J., Cho L.H., Yoon J., Yoon H., Wai A.H., Hong W.J., Han M., Sakakibara H., Liang W., Jung K.H., Jeon J.S., Koh H.J., Zhang D., An G.
Plant Biotechnol. J. 2018
Chromatin interacting factor OsVIL2 increases biomass and rice grain yield.
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Huang X., Lu Z., Wang X., Ouyang Y., Chen W., Xie K., Wang D., Luo M., Luo J., Yao J.
Plant J. 2016
Imprinted gene OsFIE1 modulates rice seed development by influencing nutrient metabolism and modifying genome H3K27me3.
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Jeong H.J., Yang J., Cho L.H., An G.
Plant Cell Rep. 2016 35(4) 905-20
OsVIL1 controls flowering time in rice by suppressing OsLF under short days and by inducing Ghd7 under long days.
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Nallamilli B.R., Zhang J., Mujahid H., Malone B.M., Bridges S.M., Peng Z.
PLoS Genet. 2013 9(3) e1003322
Polycomb group gene OsFIE2 regulates rice (Oryza sativa) seed development and grain filling via a mechanism distinct from Arabidopsis.
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Yang J., Lee S., Hang R., Kim S.R., Lee Y.S., Cao X., Amasino R., An G.
Plant J. 2013 73(4) 566-78
OsVIL2 functions with PRC2 to induce flowering by repressing OsLFL1 in rice.
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Luo M,Platten D,Chaudhury A,Peacock WJ,Dennis ES
Mol Plant 2009 2(4) 711-23
Expression, imprinting, and evolution of rice homologs of the polycomb group genes.
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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 salt stress( GO:0009651 )
metal ion binding( GO:0046872 )
chromatin DNA binding( GO:0031490 )
regulation of cell growth( GO:0001558 )
regulation of cell proliferation( GO:0042127 )
photoperiodism, flowering( GO:0048573 )
maintenance of floral organ identity( GO:0048497 )
chromatin silencing complex( GO:0005677 )
nucleus( GO:0005634 )
PcG protein complex( GO:0031519 )
histone H3-K27 methylation( GO:0070734 )
regulation of long-day photoperiodism, flowering( GO:0048586 )
heterochromatin formation( GO:0031507 )
flower development( GO:0009908 )
cell differentiation( GO:0030154 )
negative regulation of seed germination( GO:0010187 )
gibberellic acid homeostasis( GO:0010336 )
gibberellic acid mediated signaling( GO:0009740 )
intracellular( GO:0005622 )
zinc ion binding( GO:0008270 )
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Trait Ontology
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plant height( TO:0000207 )
germination rate( TO:0000430 )
gibberellic acid content( TO:0002675 )
grain size( TO:0000397 )
floral organ identity( TO:0006019 )
days to heading( TO:0000137 )
flowering time( TO:0002616 )
grain weight( TO:0000590 )
tiller number( TO:0000346 )
grain length( TO:0000734 )
1000-seed weight( TO:0000382 )
seed length to width ratio( TO:0000411 )
filled grain number( TO:0000447 )
secondary branch number( TO:0000557 )
internode length( TO:0000145 )
stem thickness( TO:0000339 )
spikelet anatomy and morphology trait( TO:0000657 )
salt tolerance( TO:0006001 )
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Plant Ontology
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tegmen( PO:0020056 )
shoot system( PO:0009006 )
root( PO:0009005 )
leaf( PO:0025034 )
inflorescence( PO:0009049 )
pollen( PO:0025281 )
endosperm development stage( PO:0007633 )
stem( PO:0009047 )
leaf sheath( PO:0020104 )
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Related Strains
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Phenotype images
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Last updated
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Dec 12, 2025
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Update info.