Recommend Plant Signaling & Behavior (PS&B) to your librarian for 2008. Download form here.

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

From the Notch Signaling Pathway to Ribosome Biogenesis

SierChing Chantha, Faiza Tebbji and Daniel P. Matton

volume 2 | issue 3

may/june 2007
Pages: 168 - 170

We now provide open access to journal articles published online for one year or more. This article may be downloaded at the following link:

Download PDF

If the document does not open, please right-click on the link (control-click on a Macintosh) and select the option to save the file to disk.

Nearly 240 WD repeat proteins have been identified from the Arabidopsis genome. Among these, some well characterized WDR proteins were shown to regulate various developmental processes in plants.¹ We have recently isolated in Solanum chacoense a homolog of the Drosophila NOTCHLESS gene. In Drosophila, NOTCHLESS regulates the activity of the Notch signaling pathway through a direct interaction with the intracellular domain of the Notch receptor. Although no Notch signaling pathway exists in plants, the NLE gene is conserved in animals, plants and yeast. Furthermore, functional conservation was suggested by expression of the plant NLE gene in Drosophila. In plants, underexpression of the plant NLE gene altered numerous developmental processes including seed development, and resulted in a reduction in aerial organ size, in organ numbers, in delayed flowering, and in an increased stomatal index. Surprisingly, the link between these pleiotropic phenotypes is the recent discovery of the involvement of NLE in ribosome biogenesis, emphasizing its role in proper cellular growth and proliferation during plant development.

Authors

SierChing Chantha

Université de Montréal, Montréal, Canada

Faiza Tebbji