Variability of peroxidase activity and heavy metal content in the needles of Austrian pine (Pinus nigra Arnold) half-sib lines
2007
Isajev, V., Faculty of Forestry, Belgrade (Serbia) | Radotic, K., University of Belgrade, Belgrade (Serbia). Center for Multidisciplinary Studies
Enzyme activity of peroxidases of total proteins and heavy metal contents were studied in the needles of eight different half-sib lines of Austrian pine. The samples were taken from a fourteen-year-old seedling seed orchard on Jelova Gora (near Uzice, Serbia). The results show the pronounced variability of the concentration of total proteins, heavy metal concentration and enzyme activity of peroxidases in the study Austrian pine half-sib lines. Concentration of total proteins and activities of peroxidase enzyme are significantly different in various Austrian pine half-sib lines while the proteins have various level of expression in individual lines. In addition, peroxidase enzyme shows different activity which depends on genetic constitution of the trees from analyzed half-sib lines, because based on the seed orchard size and the planting pattern, it can be assumed that the effect of external factors is reduced to minimum. Peroxidases present as soluble in apoplast, or covalently bound to cell wall, play an important role in lignification, suberization, healing injuries, defense against pathogens and airborne pollutants.
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