The biological activity of humic matter extracted from pasture and forested alpine soils, located in a unique climatic area, was investigated in Picea abies seedlings and Zea mays roots. The humic extracts were characterized by 13C-NMR-spectra and by the amount of indole-3-acetic acid (IAA). Results evidenced that the forest humus, endowed with a higher phenolic C and IAA content, exhibits a better influence on peroxidase activity, esterase and peroxidase polymorphism and redox membrane activity.
Effect of humic substances extracted from pasture and forested soils on plant metabolism
NARDI, SERENELLA
2001
Abstract
The biological activity of humic matter extracted from pasture and forested alpine soils, located in a unique climatic area, was investigated in Picea abies seedlings and Zea mays roots. The humic extracts were characterized by 13C-NMR-spectra and by the amount of indole-3-acetic acid (IAA). Results evidenced that the forest humus, endowed with a higher phenolic C and IAA content, exhibits a better influence on peroxidase activity, esterase and peroxidase polymorphism and redox membrane activity.
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