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Uridine,a cell division factor in pea roots |
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| Authors: | Gerrit Smit Christiaan C. de Koster Jan Schripsema Herman P. Spaink Anton A. van Brussel Jan W. Kijne |
| Affiliation: | (1) Institute of Molecular Plant Sciences, Leiden University, Wassenaarseweg 64, 2333 AL Leiden, The Netherlands;(2) Bijvoet Center for Biomolecular Research, Utrecht University, P.O.Box 80083, 3508 TB Utrecht, The Netherlands;(3) Centre for Biopharmaceutical Sciences, Leiden University, P.O.Box 9502, 2300 RA Leiden, The Netherlands;(4) Netherlands Institute for Dairy Research (NIZO), P.O.Box 20, 6710 BA Ede, The Netherlands |
| Abstract: | Nodulation (root nodule formation) in legume roots is initiated by the induction of cell divisions and formation of root nodule primordia in the plant root cortex, usually in front of the protoxylem ridges of the central root cylinder. We isolated a factor from the central cylinder (stele) of pea roots which enhances hormone-induced cell proliferation in root cortex explants at positions similar to those of nodule primordia. The factor was identified as uridine. Uridine may act as a morphogen in plant roots at picomolar concentrations. |
| Keywords: | cell division pea root stele uridine |
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