| 单词 |
pinosylvin |
| 释义 |
pinosylvin Biol.|paɪnəʊˈsɪlvɪn|
Formerly also -sylvine.
[a. G. pinosylvin (H. Erdtman 1939, in Naturwiss. XXVII. 130), f. mod.L. Pinus sylvestris, taxonomic name of Scots pine (f. L. pīnus pine n.2 + syl-, silvestris of a wood (f. silva a wood)): see -in1.]
a. A colourless, toxic, crystalline compound, 3,5-dihydroxystilbene, C14H12O2, which occurs in the heartwood of the Scots pine, where it confers resistance to fungal and insect attack.
b. Any of the related antifungal compounds that occur in pines.
1939Chem. Abstr. XXXIII. 4776 Pinosylvine is poisonous, fishes die in 0·002% soln. 1945Svensk Bot. Tidskr. XXXIX. 312 In order to get an idea of the relative toxicity of the pinosylvin compounds experiments were made at the same time in solutions containing phenol. 1955Ibid. XLIX. 421 The heartwoods of trees belonging to the Pinaceae family contain a number of peculiar phenolic constituents,..of which only the hydroxystilbenes (pinosylvins) show high fungicidal activity. 1968New Scientist 11 Jan. 68/2 The natural resistance of certain types of wood to termite attack has been attributed to the presence of specific repellent chemicals such as..pinosylvin. 1973Ann. Rev. Phytopathol. XI. 204 The formation of pinosylvins in P. resinosa cultures..may have been caused directly by ethylene. |
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