GEPHE SUMMARY Print
Gephebase Gene
Entry Status
Published
GepheID
GP00000398
Main curator
Martin
PHENOTYPIC CHANGE
Trait Category
Trait State in Taxon A
Arabidopsis spp.
Trait State in Taxon B
Arabidopsis spp.
Ancestral State
Data not curated
Taxonomic Status
Taxon A
Latin Name
Common Name
-
Synonyms
Cardaminopsis; Arabidopsis (DC.) Heynh., 1842; Cardaminopsis Hayek
Rank
genus
Lineage
Show more ... treptophytina; Embryophyta; Tracheophyta; Euphyllophyta; Spermatophyta; Magnoliophyta; Mesangiospermae; eudicotyledons; Gunneridae; Pentapetalae; rosids; malvids; Brassicales; Brassicaceae; Camelineae
NCBI Taxonomy ID
is Taxon A an Infraspecies?
No
Taxon B
Latin Name
Common Name
-
Synonyms
Cardaminopsis; Arabidopsis (DC.) Heynh., 1842; Cardaminopsis Hayek
Rank
genus
Lineage
Show more ... treptophytina; Embryophyta; Tracheophyta; Euphyllophyta; Spermatophyta; Magnoliophyta; Mesangiospermae; eudicotyledons; Gunneridae; Pentapetalae; rosids; malvids; Brassicales; Brassicaceae; Camelineae
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
Hauser MT; Harr B; Schlötterer C
Abstract
GLABROUS1 (GL1) belongs to the large family of MYB transcription factors and is known to play a central role in trichome initiation. We studied trichome distribution and the molecular variation of GL1 in 28 A. thaliana accessions. Trichome density on rosette leaves was highly variable among those accessions. On the molecular level, we detected substantial sequence variation in a 3-kb fragment which included the complete coding region of the GL1 locus (pi = 0.01). Phylogenetic analysis of GL1 indicates the presence of two diverged clades among 28 accessions. Using ANOVA, we show that the phenotypic variation in trichome density cannot be explained by the sequence divergence between the two phylogenetic lineages. Sequence analysis of wild-type Arabidopsis thaliana and Arabidopsis lyrata accessions indicates that all amino acid substitutions are located outside of the conserved helix-turn-helix DNA-binding domains R2 and R3. Using plants of A. thaliana and A. lyrata with either naturally occurring or ethyl methane sulfonate--induced glabrous phenotypes, we demonstrate that the last 14 C-terminal amino acids of the GL1 gene have no major impact on the initiation of trichomes.
RELATED GEPHE
Related Genes
Related Haplotypes
5
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