Publication Title: 
Polle et al. (1993)
Title: 
Seasonal changes in the axial distribution of peroxidase activity in the xylem sap of beech (Fagus sylvatica L.) trees
Authors: 
Polle Andrea, Glavac Vjekoslav
Publication Year: 
1993
Series Name: 
Tree Physiology
Abstract: 
Xylem sap was collected from trunk segments of adult beech (Fagus sylvatica L.) trees by water displacement. Peroxidase activity was analyzed in xylem saps collected in different phases of the yearly growth cycle and from different heights up the trunks (up to 14 m). The xylem saps contained two major peroxidase isozymes with acidic isoelectric points of 4.1 and 4.6, respectively. Mean peroxidase activity was low during the emergence of the new leaves and high in summer and in winter. In the cold season, peroxidase activity decreased from the stem base to the top, whereas significant gradients were not observed during the vegetative period.
Publication Species: 
Fagus sylvatica (European beech)
Volume: 
13
Issue: 
4
Page Numbers: 
409-413
DOI: