Uridine, a cell division factor in pea roots.
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.
Smit
G
G
Institute of Molecular Plant Sciences, Leiden University, The Netherlands.
de Koster
C C
CC
Schripsema
J
J
Spaink
H P
HP
van Brussel
A A
AA
Kijne
J W
JW
D002455:Cell Division / Q000187:drug effects; D004305:Dose-Response Relationship, Drug; D009682:Magnetic Resonance Spectroscopy; D018532:Pisum sativum / Q000737:chemistry / Q000166:cytology / Q000187:drug effects / Q000254:growth & development*; D010937:Plant Growth Regulators / Q000302:isolation & purification / Q000494:pharmacology*; D018517:Plant Roots / Q000737:chemistry / Q000166:cytology / Q000187:drug effects / Q000254:growth & development*; D014529:Uridine / Q000302:isolation & purification / Q000494:pharmacology*
D010937:Plant Growth Regulators; D014529:Uridine