Recommend Plant Signaling & Behavior (PS&B) to your librarian for 2008. Download form here.
Sign up for Table of Contents Alerts!
PS&B is the official journal of the Society for Plant Neurobiology. Full membership ($60 annually) and student membership ($30 annually) include online access to the journal. Click here to join.
Email this page
Print this page
Article Addendum
Cellular pattern formation by SCRAMBLED, a leucine-rich repeat receptor-like kinase in Arabidopsis
Su-Hwan Kwak and John Schiefelbein
volume 3 | issue 2
february 2008Pages: 110 - 112
Subscribe to this journal for $79/year
The appropriate specification of distinct cell types is important for generating the proper tissues and bodies of multicellular organisms. In the root epidermis of Arabidopsis, cell fate determination is accomplished by a transcriptional regulatory circuit that is influenced by positional signaling. A leucine-rich repeat receptor-like kinase, SCRAMBLED (SCM), has been shown to be responsible for the position-dependent aspect of this epidermal pattern. In a recent report, we find that SCM affects the transcriptional regulatory network by down-regulating the WEREWOLF (WER) MYB gene expression in a set of epidermal cells located in a specific position. We also find that SCM and the SCM-related SRF1 and SRF3 are not required for embryonic epidermal patterning and that SRF1 and SRF3 do not act redundantly with SCM. This suggests that distinct positional signaling mechanisms exist for embryonic and post-embryonic epidermal patterning. In this addendum, we discuss the implications of our recent findings and extend our working model for epidermal cell pattering.
Authors
Su-Hwan Kwak
Department of Molecular, Cellular and Developmental Biology; University of Michigan; Ann Arbor, Michigan USA
John Schiefelbein
Department of Molecular, Cellular and Developmental Biology; University of Michigan; Ann Arbor, Michigan USA