Role of a positive regulator of root hair development, CAPRICE, in Arabidopsis root epidermal cell differentiation

Takuji Wada, Tetsuya Kurata, Rumi Tominaga, Yoshihiro Koshino-Kimura, Tatsuhiko Tachibana, Koji Goto, M. David Marks, Yoshiro Shimura, Kiyotaka Okada

    Research output: Contribution to journalArticlepeer-review

    242 Scopus citations

    Abstract

    In Arabidopsis, root hairs are formed only from a set of epidermal cells named trichoblasts; or hair-forming cells. Previous studies showed CAPRICE (CPC) promotes differentiation of hair-forming cells by controlling a negative regulator, GLABRA2 (GL2), which is preferentially expressed in hairless cells. Here, we show that CPC is also predominantly expressed in the hairless cells, but not in the neighboring hair-forming cells, and that CPC protein moves to the hair-forming cells and represses the GL2 expression. We also show that the N terminus of bHLH protein interacts with CPC and is responsible for the GL2 expression. We propose a model in which CPC plays a key role in the fate-determination of hair-forming cells.

    Original languageEnglish (US)
    Pages (from-to)5409-5419
    Number of pages11
    JournalDevelopment
    Volume129
    Issue number23
    DOIs
    StatePublished - Dec 2002

    Keywords

    • Arabidopsis
    • CAPRICE
    • Epidermis
    • Myb
    • Protein movement
    • Root hair
    • Transcriptional regulation
    • bHLH

    Fingerprint

    Dive into the research topics of 'Role of a positive regulator of root hair development, CAPRICE, in Arabidopsis root epidermal cell differentiation'. Together they form a unique fingerprint.

    Cite this