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expand all sections collapse all sections Oryza sativa gene "GIF1" (GR:0080062)
Species Oryza sativa (Rice) [ GR_tax:013681 ]
Accession GR:0080062
Gene Symbol GIF1
Gene Name GRAIN INCOMPLETE FILLING 1 
Synonyms (3)
E.C. Numbers (1) 3.2.1.26
Pathway Reactions (0)
Chromosome No. 4
Gene Type CDS (Protein coding)
Has Phenotype yes
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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