Editors' ChoicePlant biology

Making Roots

Science Signaling  31 Aug 2010:
Vol. 3, Issue 137, pp. ec267
DOI: 10.1126/scisignal.3137ec267

A tiny bunch of stem cells generates the bulk and diversity of plant roots. These cells are found at the root meristem and are themselves regulated by signaling inputs from a variety of sources. In Arabidopsis, Matsuzaki et al. have identified a family of peptide factors that regulate these root stem cells. These peptides, known as root meristem growth factors, carry the posttranslational modification tyrosine sulfation and are essential for maintaining the root stem cell niche.

Y. Matsuzaki, M. Ogawa-Ohnishi, A. Mori, Y. Matsubayashi, Secreted peptide signals required for maintenance of root stem cell niche in Arabidopsis. Science 329, 1065–1067 (2010). [Abstract] [Full Text]