GEPHE SUMMARY Print
Gephebase Gene
Entry Status
Published
GepheID
GP00001204
Main curator
Martin
PHENOTYPIC CHANGE
Trait Category
Trait State in Taxon A
Oryza sativa
Trait State in Taxon B
Oryza sativa japonicus
Ancestral State
Data not curated
Taxonomic Status
Taxon A
Latin Name
Common Name
rice
Synonyms
rice; red rice; Oryza sativa L.
Rank
species
Lineage
Show more ... ytina; Embryophyta; Tracheophyta; Euphyllophyta; Spermatophyta; Magnoliophyta; Mesangiospermae; Liliopsida; Petrosaviidae; commelinids; Poales; Poaceae; BOP clade; Oryzoideae; Oryzeae; Oryzinae; Oryza
NCBI Taxonomy ID
is Taxon A an Infraspecies?
No
Taxon B
Latin Name
Common Name
rice
Synonyms
rice; red rice; Oryza sativa L.
Rank
species
Lineage
Show more ... ytina; Embryophyta; Tracheophyta; Euphyllophyta; Spermatophyta; Magnoliophyta; Mesangiospermae; Liliopsida; Petrosaviidae; commelinids; Poales; Poaceae; BOP clade; Oryzoideae; Oryzeae; Oryzinae; Oryza
NCBI Taxonomy ID
is Taxon B an Infraspecies?
Yes
Taxon B Description
Oryza sativa japonicus
GENOTYPIC CHANGE
Generic Gene Name
waxy
Synonyms
GBSSI
String
-
Sequence Similarities
Belongs to the glycosyltransferase 1 family. Bacterial/plant glycogen synthase subfamily.
UniProtKB
Setaria italica
GenebankID or UniProtKB
Presumptive Null
No
Molecular Type
Aberration Type
SNP
SNP Coding Change
-
Molecular Details of the Mutation
substitution G->T in the 5' splice site of intron 1
Experimental Evidence
Taxon A Taxon B Position
Codon - - -
Amino-acid - - -
Authors
Wang ZY; Zheng FQ; Shen GZ; Gao JP; Snustad DP; Li MG; Zhang JL; Hong MM
Abstract
The waxy (Wx) gene of rice encodes a granule-bound starch synthase (GBSS = waxy protein) required for the synthesis of amylose in endosperm. An analysis of Wx transcripts, Wx protein, and amylose content of 31 rice cultivars revealed that endosperm amylose and Wx protein contents are correlated with the ability of the cultivar to excise intron I from the leader sequence of the Wx transcript. Cultivars with high endosperm amylose content (group I) contain high levels of amylose, Wx protein, and the mature 2.3 kb Wx mRNA. Cultivars with intermediate amylose content (group II) produce substantial amounts of a large 3.3 kb Wx pre-mRNA, with intron I still present, in addition to the mature Wx mRNA, and intermediate levels of Wx protein. Glutinous rice (group III cultivars) contains no amylose, no Wx protein, and no mature Wx mRNA; only the incompletely spliced 3.3 kb Wx pre-mRNA is present in group III cultivars. Based on these results, it is hypothesized that the amylose content of rice endosperm is regulated at the level of Wx transcript processing, and, more specifically, at the stage of intron I excision from the Wx pre-mRNA.
RELATED GEPHE
Related Genes
Related Haplotypes
No matches found.
COMMENTS
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