WEREWOLF and ENHANCER of GLABRA3 are interdependent regulators of the spatial expression pattern of GLABRA2 in Arabidopsis

Sang Kee Song, Su Hwan Kwak, Soo Chul Chang, John Schiefelbein, Myeong Min Lee

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

In multicellular organisms, cell fates are specified through differential regulation of transcription. Epidermal cell fates in the Arabidopsis thaliana root are precisely specified by several transcription factors, with the GLABRA2 (GL2) homeodomain protein acting at the farthest downstream in this process. To better understand the regulation of GL2 expression, we ectopically expressed WEREWOLF (WER) and ENHANCER OF GLABRA3 (EGL3) in various tissues and examined GL2 expression. Here we show that WER expressed ubiquitously in the root induced GL2 expression only in the root epidermis, whereas co-expression of WER and EGL3 induced GL2 expression in the corresponding tissues. We also found that GL3 accumulated in the nucleus at the early meristematic region and EGL3 accumulated later in the nucleus of epidermal cells. We further found that ectopic expression of WER and EGL3 in ground tissues inhibited GL2 expression in the epidermis. Our results suggest that the co-expression of WER and EGL3 is sufficient for driving GL2 and CPC expression.

Original languageEnglish
Pages (from-to)94-100
Number of pages7
JournalBiochemical and Biophysical Research Communications
Volume467
Issue number1
DOIs
Publication statusPublished - 2015 Nov 6

All Science Journal Classification (ASJC) codes

  • Biophysics
  • Biochemistry
  • Molecular Biology
  • Cell Biology

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