...Silvia Costa; Liam Dolan Epidermal cells in the root of Arabidopsis seedling differentiate either as hair or non-hair cells, while in the hypocotyl they become either stomatal or elongated cells. WEREWOLF ( WER ) and GLABRA2 ( GL2 ) are positive regulators of non-hair and elongated cell development...

...Yan Lin; John Schiefelbein A position-dependent pattern of epidermal cell types is produced during the development of the Arabidopsis seedling root and hypocotyl. To understand the origin and regulation of this patterning mechanism, we have examined the embryonic expression of the GLABRA2 ( GL2...

... ) and TRANSPARENT TESTA GLABROUS ( TTG ) genes. The GLABRA2 ( GL2 ) gene is required for subsequent phases of trichome morphogenesis such as cell expansion, branching, and maturation of the trichome cell wall. Previous studies have shown that GL2 is a member of the homeodomain class of transcription factors. Here...