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Histological studies on the bundle sheath in needles of Picea abies (L.) Karst., diseased or fumigated with SO 2 1
Author(s) -
MaterMaercker Uta
Publication year - 1986
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.1439-0329.1986.tb00201.x
Subject(s) - picea abies , vascular bundle , bundle , fumigation , karst , botany , horticulture , chemistry , materials science , biology , composite material , paleontology
In current year needles of diseased Picea abies the radial walls of the bundle sheath were found in a state of partial delignification, while the cells were filled with granular, heavily fluorescent substances which absorbed UV light at 280 nm. The same symptoms were observed after fumigation of healthy young plants with 0.3 ppm SO 2 for 20 days. Findings may bear relevance to disturbances in water transport from the vascular system towards the evaporating surfaces of the needle.