Claim · model-written summary
The 32-bp deletion enhances LiBBX16 activation of anthocyanin synthesis-related genes, particularly LiF3GT and LiMYB75.
- Taxon
- crape myrtle
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Lagerstroemia indicat0 - Gene
- LiBBX16e0
- Outcome
- activation of anthocyanin synthesis-related genese0
Not reportedMaterialCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
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Verbatim
t0“crape myrtle”
e0“the 32-bp deletion enhances LiBBX16’s activation of anthocyanin synthesis-related genes, particularly LiF3GT and LiMYB75”
Title
A 32-bp deletion in LiBBX16 underlies the dominant purple leaf trait in crape myrtle
Ping Shen; Lu Feng; Xiufeng Chi; et al. Horticulture Research 2026. doi:10.1093/hr/uhag179
Other claims from this paper (11)
- Observation In crape myrtle the purple leaf trait is a single-gene dominant trait, confirmed with five segregating populations.
- Observation Bulked segregant analysis combined with metabolomics and RNA-seq identified LiBBX16, a B-box zinc-finger transcription factor, in crape myrtle.
- Observation LiBBX16 has two alleles in purple-leafed plants (LiBBX16p and LiBBX16a) and two in green-leafed plants (LiBBX16g and LiBBX16a).
- Observation LiBBX16p contains a unique 32-bp deletion causing a frameshift, premature termination and nucleo-cytoplasmic localization.
- Method / resource An InDel marker derived from the 32-bp deletion effectively distinguished purple-leafed from green-leafed crape myrtle plants.
- Observation All crape myrtle plants homozygous for LiBBX16p are seedling lethal.
- Intervention effect Heterologous expression of LiBBX16p in Arabidopsis resulted in purple leaves and stems.
- Intervention effect Heterologous expression of LiBBX16p in Arabidopsis gave anthocyanin content approximately 9.5-fold higher than in controls.
- Intervention effect Silencing LiBBX16 in purple-leafed L. indica reduced anthocyanin content.
- Intervention effect Silencing LiBBX16 in purple-leafed L. indica turned the leaves green.
- Mechanism Unlike LiBBX16g, which binds DNA directly, LiBBX16p likely acts as a co-activator recruited through protein-protein interactions.