... cell wall patterning. ICR5 has a unique function in protoxylem secondary cell wall patterning, whereas icr2 , but not icr5 , mutants develop split root hairs, demonstrating functional diversification. Taken together, our results show that ICR2 and ICR5 have unique and cooperative functions...

...Sheena R. Gayomba; Gloria K. Muday ABSTRACT Reactive oxygen species (ROS) are signaling molecules produced by tissue-specific respiratory burst oxidase homolog (RBOH) enzymes to drive development. In Arabidopsis thaliana , ROS produced by RBOHC was previously reported to drive root hair elongation...

...Delphine Gendre; Anirban Baral; Xie Dang; Nicolas Esnay; Yohann Boutté; Thomas Stanislas; Thomas Vain; Stéphane Claverol; Anna Gustavsson; Deshu Lin; Markus Grebe; Rishikesh P. Bhalerao ABSTRACT Root hairs are protrusions from root epidermal cells with crucial roles in plant soil interactions...

...Michitaro Shibata; Christian Breuer; Ayako Kawamura; Natalie M. Clark; Bart Rymen; Luke Braidwood; Kengo Morohashi; Wolfgang Busch; Philip N. Benfey; Rosangela Sozzani; Keiko Sugimoto ABSTRACT How plants determine the final size of growing cells is an important, yet unresolved, issue. Root hairs...

...Rumi Tominaga-Wada; Takuji Wada The CAPRICE ( CPC ) gene encodes a R3-type MYB transcription factor that promotes differentiation of root hair cells in Arabidopsis thaliana . Here, we have compared the functions of five CPC -homologous genes for epidermal cell differentiation using CPC promoter...

... and hornworts. Physcomitrella patens RHD SIX-LIKE1 (PpRSL1) and PpRSL2 transcription factors are necessary for rhizoid development in mosses. Similar proteins, AtRHD6 and AtRSL1, control the development of root hairs in Arabidopsis thaliana . Auxin positively regulates root hair development independently...

... GL3 CPC TRY WER Transcription factor pBridge Lac OP/I-GFP Endoreduplication Endoreplication Elemental analysis GFP Nuclear localization Interphase chromosomes Cell fate Differentiation Cell cycle Cytoskeleton Root hair Arabidopsis leaf trichomes are unicellular...

...Takuji Wada; Tetsuya Kurata; Rumi Tominaga; Yoshihiro Koshino-Kimura; Tatsuhiko Tachibana; Koji Goto; M. David Marks; Yoshiro Shimura; Kiyotaka Okada In Arabidopsis , root hairs are formed only from a set of epidermal cells named trichoblasts or hair-forming cells. Previous studies showed CAPRICE...

... with defective radial patterning. In scz mutants, the subepidermal layer (ground tissue) develops root hairs. Root hairs normally only form on epidermal cells of wild-type plants. Moreover, extra periclinal divisions (new wall parallel to surface of the root) occur in the scz root resulting in the formation...

...Tatiana N. Bibikova; Tobias Jacob; Ingo Dahse; Simon Gilroy ABSTRACT Morphogenesis in plants is characterized by highly regulated cell enlargement. However, the mechanisms controlling and localizing regions of growth remain essentially unknown. Root hair formation involves the induction...

... that give rise to the columella root cap cells, epidermis and lateral root-cap cells, and the cells of the cortex and endodermis respectively. The mature epidermis is composed of two cell types, root hair cells (derived from trichoblasts) and non-hair cells (derived from atrichoblasts). These cells...