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Composition of callus resin of Norway spruce, Scots pine, European larch and Douglas fir


Composition of callus resin of Norway spruce, Scots pine, European larch and Douglas fir



Holzforschung: 4, 417-422



ISSN/ISBN: 0018-3830

DOI: 10.1515/hf.2008.070

Upon damage of conifer trees, oleoresin is exuded onto the tree stem. The oleoresin is typically composed of monoterpenes and resin acids. It serves to protect the tree from dehydration and microbial attack. Callus resin, in the traditional German term "Uberwallungsharz", is a resin exuded from the callus tissue formed as the wound is closed by annual growth. These resins can usually be found as nodules or lumps on the rim of the closing wound.

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Accession: 030663131

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