GEPHE SUMMARY Print
Gephebase Gene
Entry Status
Published
GepheID
GP00001022
Main curator
Martin
PHENOTYPIC CHANGE
Trait Category
Trait State in Taxon A
Oryza sativa japonica
Trait State in Taxon B
Oryza sativa indica
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?
Yes
Taxon A Description
Oryza sativa japonica
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 indica
GENOTYPIC CHANGE
Generic Gene Name
SaF+
Synonyms
-
String
-
Sequence Similarities
-
GO - Molecular Function
-
GO - Biological Process
-
GO - Cellular Component
-
UniProtKB
Oryza sativa subsp. indica
GenebankID or UniProtKB
Presumptive Null
Molecular Type
Aberration Type
Molecular Details of the Mutation
Intron structure + aa changes on two adjacent coding genes
Experimental Evidence
Authors
Long Y; Zhao L; Niu B; Su J; Wu H; Chen Y; Zhang Q; Guo J; et al. ... show more
Abstract
Sterility is common in hybrids between divergent populations, such as the indica and japonica subspecies of Asian cultivated rice (Oryza sativa). Although multiple loci for plant hybrid sterility have been identified, it remains unknown how alleles of the loci interact at the molecular level. Here we show that a locus for indica-japonica hybrid male sterility, Sa, comprises two adjacent genes, SaM and SaF, encoding a small ubiquitin-like modifier E3 ligase-like protein and an F-box protein, respectively. Most indica cultivars contain a haplotype SaM(+)SaF(+), whereas all japonica cultivars have SaM(-)SaF(-) that diverged by nucleotide variations in wild rice. Male semi-sterility in this heterozygous complex locus is caused by abortion of pollen carrying SaM(-). This allele-specific gamete elimination results from a selective interaction of SaF(+) with SaM(-), a truncated protein, but not with SaM(+) because of the presence of an inhibitory domain, although SaM(+) is required for this male sterility. Lack of any one of the three alleles in recombinant plants does not produce male sterility. We propose a two-gene/three-component interaction model for this hybrid male sterility system. The findings have implications for overcoming male sterility in inter-subspecific hybrid rice breeding.
RELATED GEPHE
Related Haplotypes
No matches found.
EXTERNAL LINKS
COMMENTS
The locus for indica-japonica hybrid male sterility; Sa; comprises two adjacent genes; SaM and SaF; encoding a small ubiquitin-like modifier E3 ligase-like protein and an F-box protein; respectively
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