© 2004 Heron Publishing—Victoria, Canada
Changes in polyamine concentration associated with aging in Pinus radiata and Prunus persica
Mario F. Fraga (1, 2, 3), María Berdasco (1), L. Borja Diego (1), Roberto Rodríguez (1, 4) and Maria Jesús Cañal (1, 4)
1. Lab. Fisiología Vegetal, Dpto. Biología de Organismos y Sistemas, Universidad de Oviedo, C/Catedrático Rodrigo Uría s/n, E-33071
Oviedo, Spain / 2. Cancer Epigenetics Laboratory, Program of Molecular Pathology, National Cancer Centre (CNIO), C/Melchor Fernàndez Almagro,
nº3, E-28029 Madrid, Spain / 3. Corresponding author (mffraga@cnio.es) / 4. Instituto de Biotecnología de Asturias (asociado al CSIC), E-33071 Oviedo, Spain / Received February 11, 2004; accepted May 9, 2004; published online September 1, 2004
Summary
Endogenous polyamine concentrations in apical buds of peach (Prunus persica (L.) Batsch cv. ‘Hakuho’) and monterey pine (Pinus radiata D. Don) seedlings, saplings and mature trees were analyzed by high performance liquid chromatography coupled with fluorescence
detection to establish physiological correspondences and disparities between the species. Although there were many differences
in polyamine metabolism between peach and monterey pine, several similarities were found. Specifically, in both species, the
ratio between concentrations of free polyamines and low molecular-weight polyamine conjugates was greater than and less than
unity in juvenile and adult plants, respectively. Free putrescine concentration decreased with age in both species.
Keywords:
forestry, phase change, Pinus radiata, polyamines, Prunus persica
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