Gene - Detail

Detail of Gene

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Basic Information
CGSNL Gene Symbol RE2
Gene Symbol Synonym re2
Gene Name Synonym reduced embryo2, reduced embryo 2, reduced embryo-2
Protein Name
Allele re2, re2-1
Chromosome No. 10
Explanation Significant development of endosperm results in the restriction of space for embryo development, embryo size being reduced to 35-45% of that of the wild type. Size of every organ in embryo is reduced. This gene controls the development of endosperm, being located on the short arm of chromosome 10 flanked by CAPS markers C10 7.7 (2.6cM) and C10 11.5 (2.6cM). PO:0009009; embryo ; PO:0009089; endosperm. GRO:0007044; 06-heading stage ; GRO:0007042; 08-dough stage ; GRO:0007045; 09-mature grain stage ; GRO:0007046; 07-milk stage. RE1 and RE2 act upstream of GE in embryo-facing endosperm and are epistatic to GE in endosperm, but non-epistatic in embryo. They have opposite roles to GE in embryo/endosperm size balance (Nagasawa et al. 2013).
Trait Class Seed - Morphological traits - Embryo
Seed - Morphological traits - Endosperm
cDNA Accession No. -
Links -
INSD Accession List
(Test version)
Link map Classical linkage map
Nagasawa N., Hibara K.I., Heppard E.P., Vander Velden KA., Luck S., Beatty M., Nagato Y., Sakai H.
Plant J. 2013  75(4)  592-605
GIANT EMBRYO, encoding CYP78A13, affects size balance between embryo and endosperm in rice.
Nagasawa, N., Y. Nagato, H. Sakai
RGN 2003  20  22-24
Physical mapping of the REDUCED EMBRYO2 gene.
Hong, S.K., H. Kitano, H. Satoh and Y. Nagato
Development 1996  122  2051-2058.
How is embryo size genetically regulated in rice?
Hong, S.K., T, Aoki, H. Kitano, H. Satoh and Y. Nagato
Dev Genet. 1995  16  298-310.
Phenotypic diversity of 188 rice embryo mutants.
Hong, S.K., H. Kitano, H. Satoh and Y. Nagato
RGN 1995  12  196-199.
Mutations affecting embryo size in rice.
TextPresso Search Search textpresso for RE2 ( Recent references may be retrievable, but without any warranty )
DB Reference
Gramene ID GR:0060735
Gene Ontology organ morphogenesis( GO:0009887 )
tissue development( GO:0009888 )
endosperm development( GO:0009960 )
Trait Ontology embryo related trait( TO:0000064 )
endosperm quality( TO:0000587 )
endosperm related trait( TO:0000575 )
Plant Ontology plant embryo( PO:0009009 )
endosperm( PO:0009089 )
Related Strains
Phenotype images
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Photo from Y. Nagato
Last updated
Jan 26, 2015