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Der Einfluß von kontinuierlichen, niedrigen SO 2 ‐Begasungen auf den Phenolgehalt und die Phenoloxidase‐Aktivität in Blättern einiger Waldbaumarten
Author(s) -
YeeMeiler Dorothea
Publication year - 1978
Publication title -
european journal of forest pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.535
H-Index - 49
eISSN - 1439-0329
pISSN - 0300-1237
DOI - 10.1111/j.1439-0329.1978.tb00609.x
Subject(s) - fumigation , alder , horticulture , botany , chemistry , biology
Influence of continuous fumigation by low levels of SO 2 on the phenolic contents and phenoloxidase activities in leaves of forest trees. Potted clonal trees of Norway spruce, black alder and English birch were continuously exposed to low levels of So 2 in fumigation chambers. The phenolic content of the Norway spruce needles was increased consiberably over the controls months before the trees showed any symptoms of damage to the naked eye. Fumigated black alder had a significant higher phenoloxidase activity in the leaves; but this increase only occurred two weeks before the development of necroses. In English birch neither the phenolic content nor the phenoloxidase activity was changed against the unfumigated controls during the course of the experiment.