Premium
Effect of changes in nitrogen nutrition on the polyamine content of Alnus glutinosa
Author(s) -
TONIN G. S.,
WHEELER C. T.,
CROZIER A.
Publication year - 1991
Publication title -
plant, cell and environment
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.646
H-Index - 200
eISSN - 1365-3040
pISSN - 0140-7791
DOI - 10.1111/j.1365-3040.1991.tb00951.x
Subject(s) - spermidine , putrescine , polyamine , alnus glutinosa , spermine , chemistry , root nodule , nitrogen , botany , horticulture , nitrogen fixation , food science , biochemistry , biology , alder , enzyme , organic chemistry
. The principal polyamines in Alnus glutinosa roots, nodules and root pressure sap, putrescine, spermidine and spermine, were quantified by reversed‐phase, high‐performance liquid chromatography with fluorescence detection following precolumn derivatization with 9‐fluorenylmethyl chloroformate and 1‐ada‐mantanamine. Putrescine was the major component of all tissues and sap. It comprised 70% or more of the polyamine pool except in roots of KNO 3 ‐fed plants, in which similar amounts of putrescine and spermidine were present at levels five‐fold lower than plants fed (NH 4 ) 2 SO 4 . Polyamine levels in nodules were 50% greater than in roots. The polyamine content of roots and nodules was not altered significantly when the nitrogen nutrition was changed from sole reliance on nitrogen fixation to partial or complete utilization of (NH 4 ) 2 SO 4 . However, the polyamine content of root pressure sap from nodulated plants increased almost four‐fold when they were fed with increasing concentrations of NH 4 NO 3 , although the total polyamine content remained low (5mmol m −3 sap). The polyamine content of the Alnus root system changed with plant age. In particular, the spermidine content of both roots and nodules was higher in 10‐ as compared to 16‐week‐old plants.