papyriferic acid
National Institutes of Health
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The plant secondary metabolite papyriferic acid (PA) deters browsing by snowshoe hares (Lepus americanus) on the juvenile…
Papyriferic acid (PA) is a triterpene that is secreted by glands on twigs of the juvenile ontogenetic phase of resin producing…
SummaryA sample of one-year-old seedlings of European white birch (Betula pendula) was analyzed to determine the content of…
Long-term outdoor experiments were conducted to investigate the effects of elevated ultraviolet-B (UV-B, 280-320 nm) radiation on…
Abstract Phenolics and terpenoids characteristic for silver birch (Betula pendula Roth) were screened in current-growth twigs of…
SummaryPlant carbon/nutrient balance has been implicated as an important factor in plant defensive chemistry and palatability to…
Inhibitory effects of metabolites from balsam poplar (Pops Unpublished data, P.B. Reichardt) and the relative amounts present in…
SummaryMature growth-phase internodes of Alaska paper birch (Betula resinifera) are preferred by the snowshoe hare (Lepus…
On studying the unsaponifiable part of ethereal extracts of the leaves of the birches Betula ermanii, B. lanata, and B…