GEPHE SUMMARY Print
Gephebase Gene
Entry Status
Published
GepheID
GP00000340
Main curator
Martin
PHENOTYPIC CHANGE
Trait Category
Trait State in Taxon A
Brassica rapa
Trait State in Taxon B
Brassica rapa
Ancestral State
Data not curated
Taxonomic Status
Taxon A
Latin Name
Common Name
field mustard
Synonyms
field mustard; Brassica rapa L.; Brassica rapa L., 1753
Rank
species
Lineage
Show more ... ina; Embryophyta; Tracheophyta; Euphyllophyta; Spermatophyta; Magnoliopsida; Mesangiospermae; eudicotyledons; Gunneridae; Pentapetalae; rosids; malvids; Brassicales; Brassicaceae; Brassiceae; Brassica
NCBI Taxonomy ID
is Taxon A an Infraspecies?
No
Taxon B
Latin Name
Common Name
field mustard
Synonyms
field mustard; Brassica rapa L.; Brassica rapa L., 1753
Rank
species
Lineage
Show more ... ina; Embryophyta; Tracheophyta; Euphyllophyta; Spermatophyta; Magnoliopsida; Mesangiospermae; eudicotyledons; Gunneridae; Pentapetalae; rosids; malvids; Brassicales; Brassicaceae; Brassiceae; Brassica
NCBI Taxonomy ID
is Taxon B an Infraspecies?
No
GENOTYPIC CHANGE
Presumptive Null
Molecular Type
Aberration Type
Molecular Details of the Mutation
unknown
Experimental Evidence
Authors
Zhao J; Kulkarni V; Liu N; Del Carpio DP; Bucher J; Bonnema G
Abstract
Flowering time is an important agronomic trait, and wide variation exists among Brassica rapa. In Arabidopsis, FLOWERING LOCUS C (FLC) plays an important role in modulating flowering time and the response to vernalization. Brassica rapa contains several paralogues of FLC at syntenic regions. BrFLC2 maps under a major flowering time and vernalization response quantitative trait locus (QTL) at the top of A02. Here the effects of vernalization on flowering time in a double haploid (DH) population and on BrFLC2 expression in selected lines of a DH population in B. rapa are descibed. The effect of the major flowering time QTL on the top of A02 where BrFLC2 maps clearly decreases upon vernalization, which points to a role for BrFLC2 underlying the QTL. In all developmental stages and tissues (seedlings, cotyledons, and leaves), BrFLC2 transcript levels are higher in late flowering pools of DH lines than in pools of early flowering DH lines. BrFLC2 expression diminished after different durations of seedling vernalization in both early and late DH lines. The reduction of BrFLC2 expression upon seedling vernalization of both early and late flowering DH lines was strongest at the seedling stage and diminished in subsequent growth stages, which suggests that the commitment to flowering is already set at very early developmental stages. Taken together, these data support the hypothesis that BrFLC2 is a candidate gene for the flowering time and vernalization response QTL in B. rapa.
Additional References
RELATED GEPHE
Related Genes
Related Haplotypes
No matches found.
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