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expand all sections collapse all sections  Oryza sativa Gene "GIF1"
ID 86431
Name GIF1 (GENE SYMBOL)
Synonyms (2)
GRAMENE GENEGR:0080062
Type Gene
Species Oryza sativa (Oryza sativa) [ GR_tax:013681 ]
Germplasm
Description Rice GIF1 (GRAIN INCOMPLETE FILLING 1) gene that encodes a cell-wall invertase
is required for carbon partitioning during early grain-filling. The cultivated
GIF1 gene shows a restricted expression pattern during grain-filling compared to
the wild rice allele, probably a result of accumulated mutations in the gene's
regulatory sequence through domestication. Fine mapping with introgression lines
revealed that the wild rice GIF1 is responsible for grain weight reduction.
Ectopic expression of the cultivated GIF1 gene with the 35S or rice Waxy
promoter resulted in smaller grains, whereas overexpression of GIF1 driven by
its native promoter increased grain production.
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