The YORE-YORE gene regulates multiple aspects of epidermal cell differentiation in Arabidopsis

Tetsuya Kurata, Chie Kawabata-Awai, Eiji Sakuradani, Sakayu Shimizu, Kiyotaka Okada, Takuji Wada

    Research output: Contribution to journalArticlepeer-review

    89 Citations (Scopus)

    Abstract

    We have identified a new Arabidopsis mutant, yore-yore (yre), which has small trichomes and glossy stems. Adhesion between epidermal cells was observed in the organs of the yre shoot. The cloned YRE had high homology to plant genes involved in epicuticular wax synthesis, such as ECERIFERUM1 (CER1) and maize GLOSSY1. The phenotype of transgenic plants harboring double-stranded RNA interference (dsRNAi) YRE was quite similar to that of the yre mutant. The amount of epicuticular wax extracted from leaves and stems of yre-1 was approximately one-sixth of that from the wild type. YRE promoter::GUS and in situ hybridization revealed that YRE was specifically expressed in cells of the L1 layer of the shoot apical meristem and young leaves, stems, siliques, and lateral root primordia. Strong expression was detected in developing trichomes. The trichome structure of cer1 was normal, whereas that of the yre cer1 double mutant was heavily deformed, indicating that epicuticular wax is required for normal growth of trichomes. Double mutants of yre and trichome-morphology mutants, glabra2 (gl2) and transparent testa glabra1 (ttg1), showed that the phenotype of the trichome structure was additive, suggesting that the wax-requiring pathway is distinct from the trichome development pathway controlled by GL2 and TTG1.

    Original languageEnglish
    Pages (from-to)55-66
    Number of pages12
    JournalPlant Journal
    Volume36
    Issue number1
    DOIs
    Publication statusPublished - 2003 Oct

    Keywords

    • Arabidopsis thaliana
    • Epidermal cell differentiation
    • Organ adhesion
    • Trichome
    • Wax synthesis

    ASJC Scopus subject areas

    • Genetics
    • Plant Science
    • Cell Biology

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