GEPHE SUMMARY Print
Gephebase Gene
Hd1
Entry Status
Published
GepheID
GP00000439
Main curator
Martin
PHENOTYPIC CHANGE
Trait Category
Trait State in Taxon A
Oryza glaberrima; Oryza sativa Nipponbare and Kasalath
Trait State in Taxon B
Oryza sativa - Taichung 65
Ancestral State
Taxon A
Taxonomic Status
Taxon A
Common Name
African rice
Synonyms
African rice; Oryza glaberrima Steud.
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 glaberrima; Oryza sativa Nipponbare and Kasalath
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 - Taichung 65
GENOTYPIC CHANGE
Presumptive Null
Yes
Molecular Type
Aberration Type
Insertion Size
1-10 kb
Molecular Details of the Mutation
Retro-element-like inserted in exon 2
Experimental Evidence
Authors
Doi K; Izawa T; Fuse T; Yamanouchi U; Kubo T; Shimatani Z; Yano M; Yoshimura A
Abstract
Two evolutionarily distant plant species, rice (Oryza sativa L.), a short-day (SD) plant, and Arabidopsis thaliana, a long-day plant, share a conserved genetic network controlling photoperiodic flowering. The orthologous floral regulators-rice Heading date 1 (Hd1) and Arabidopsis CONSTANS (CO)-integrate circadian clock and external light signals into mRNA expression of the FLOWERING LOCUS T (FT) group floral inducer. Here, we report that the rice Early heading date 1 (Ehd1) gene, which confers SD promotion of flowering in the absence of a functional allele of Hd1, encodes a B-type response regulator that might not have an ortholog in the Arabidopsis genome. Ehd1 mRNA was induced by 1-wk SD treatment, and Ehd1 may promote flowering by inducing FT-like gene expression only under SD conditions. Microarray analysis further revealed a few MADS box genes downstream of Ehd1. Our results indicate that a novel two-component signaling cascade is integrated into the conserved pathway in the photoperiodic control of flowering in rice.
Additional References
RELATED GEPHE
Related Haplotypes
No matches found.
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