Gene Information
NCBI Gene ID 818827
Symbol UVI4
LocusTag AT2G42260
Description UVI4 (UV-B-INSENSITIVE 4)
Gene Type protein-coding
Corresponding sequence in Trichome EST library AM781964 AM792664 AM797541 AM813260 AM823244 AW257304 BF639140 BI927163 BP529221 CA922504 EY086503 EY086983 EY086984 HS081808 TCMT44242 TCNT60467 


Trichome cell growth in Arabidopsis thaliana can be derepressed by mutations in at least five genes.
Perazza D, Herzog M, Hulskamp M, Brown S, Dorne AM, Bonneville JM. Genetics. 1999 May;152(1):461-76.

...... trichome nuclear DNA content, such as triptychon or glabra3, alter trichome branching. We isolated new mutants with supernumerary trichome branches, which fall into three unlinked complementation groups: KAKTUS and the novel loci, POLYCHOME and RASTAFARI. They map to chromosomes IV, II, and V, respectively. The trichomes of these mutants presented an increased DNA content, although to a variable extent. The spindly-5 mutant, which displays a constitutive gibberellin response, ......

...... produces overbranched trichomes containing more nuclear DNA. We analyzed genetic interactions using double mutants and propose that two independent pathways, defined by SPINDLY and TRIPTYCHON, act to limit trichome growth. KAKTUS and POLYCHOME might have redundant actions mediating gibberellin control via SPINDLY. The overall leaf polysomaty was not notably affected by these mutations, suggesting that they affect the control of DNA synthesis in a tissue- or cell type-specific ......