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单词 plasmolyticum
释义

plasmolyticumn.

Brit. /ˌplazməˈlɪtɪkəm/, U.S. /ˌplæzməˈlɪdɪkəm/
Inflections: Plural plasmolytica.
Origin: A borrowing from German. Etymon: German Plasmolytikum.
Etymology: < German Plasmolytikum (1916 or earlier) < plasmo- plasmo- comb. form + ancient Greek λυτικός able to loosen (see lytic adj.; compare -lytic comb. form). Compare earlier plasmolyte n.
Biology.
Any substance or solution used to cause plasmolysis in plant cells.
ΘΚΠ
the world > life > biology > laboratory analysis > material > [noun] > plasmolyte
plasmolyte1927
plasmolyticum1936
1936 New Phytologist 35 279 Tissue is placed in a series of solutions of the plasmolyticum of various osmotic pressures.
1943 Ann. Bot. 7 269 In experiments on rates of plasmolysis or deplasmolysis one would expect to find the wall-resistance exercising an effect when sucrose is used as the plasmolyticum.
1974 A. J. Peel Transport of Nutrients in Plants x. 189 The sections were irrigated with plasmolytica composed of 0·5–2·0 M solutions of glucose or fructose.
1993 Botanica Acta 106 249/2 Probably sucrose of the plasmolyticum was gradually accumulating in epidermal cells by cell-to-cell transport from the excision zone.
This entry has been updated (OED Third Edition, June 2006; most recently modified version published online March 2022).
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n.1936
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