GEPHE SUMMARY
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Gephebase Gene
Entry Status
Published
GepheID
GP00000241
Main curator
Martin
PHENOTYPIC CHANGE
Trait Category
Trait
Trait State in Taxon A
Zea mays
Trait State in Taxon B
Zea mays
Ancestral State
Taxon A
Taxonomic Status
Taxon A
Latin Name
Common Name
-
Synonyms
Zea mays var. japonica; maize; Zea mays L.; Zea mays mays
Rank
species
Lineage
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phyta; Euphyllophyta; Spermatophyta; Magnoliophyta; Mesangiospermae; Liliopsida; Petrosaviidae; commelinids; Poales; Poaceae; PACMAD clade; Panicoideae; Andropogonodae; Andropogoneae; Tripsacinae; Zea
Parent
NCBI Taxonomy ID
is Taxon A an Infraspecies?
No
Taxon B
Latin Name
Common Name
-
Synonyms
Zea mays var. japonica; maize; Zea mays L.; Zea mays mays
Rank
species
Lineage
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phyta; Euphyllophyta; Spermatophyta; Magnoliophyta; Mesangiospermae; Liliopsida; Petrosaviidae; commelinids; Poales; Poaceae; PACMAD clade; Panicoideae; Andropogonodae; Andropogoneae; Tripsacinae; Zea
Parent
NCBI Taxonomy ID
is Taxon B an Infraspecies?
No
GENOTYPIC CHANGE
Generic Gene Name
D8
Synonyms
-
String
Sequence Similarities
Belongs to the GRAS family. DELLA subfamily.
GO - Molecular Function
GO:0003700 : DNA-binding transcription factor activity
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GO - Biological Process
GO:0009740 : gibberellic acid mediated signaling pathway
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GO - Cellular Component
Presumptive Null
Molecular Type
Aberration Type
Deletion Size
100-999 bp
Molecular Details of the Mutation
330bp deletion to V84
Experimental Evidence
Authors
Peng J; Richards DE; Hartley NM; Murphy GP; Devos KM; Flintham JE; Beales J; Fish LJ; et al.
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Abstract
World wheat grain yields increased substantially in the 1960s and 1970s because farmers rapidly adopted the new varieties and cultivation methods of the so-called 'green revolution'. The new varieties are shorter, increase grain yield at the expense of straw biomass, and are more resistant to damage by wind and rain. These wheats are short because they respond abnormally to the plant growth hormone gibberellin. This reduced response to gibberellin is conferred by mutant dwarfing alleles at one of two Reduced height-1 (Rht-B1 and Rht-D1) loci. Here we show that Rht-B1/Rht-D1 and maize dwarf-8 (d8) are orthologues of the Arabidopsis Gibberellin Insensitive (GAI) gene. These genes encode proteins that resemble nuclear transcription factors and contain an SH2-like domain, indicating that phosphotyrosine may participate in gibberellin signalling. Six different orthologous dwarfing mutant alleles encode proteins that are altered in a conserved amino-terminal gibberellin signalling domain. Transgenic rice plants containing a mutant GAI allele give reduced responses to gibberellin and are dwarfed, indicating that mutant GAI orthologues could be used to increase yield in a wide range of crop species.
RELATED GEPHE
Related Genes
Related Haplotypes
No matches found.
EXTERNAL LINKS
COMMENTS
Various mutant alleles (gai in Arabidopsis; Rht1 in sunflowers, and Rht-B1b/Rht-D1b in wheat) resembles the phenotypic effect of d8 described here: they act in a genetically dominant fashion and encode active (altered function) mutant products that decrease GA response and thus confer reduced height.
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