Effect of Mercury Vapour on the Active Uptake of Sucrose by Leaf Tissues

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Scientific paper

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Scientific paper

ALTHOUGH the poisonous action of mercury vapour on plants was noticed as far back as 1797 1, little attention has been paid to this compared with the action of mercury compounds. In 1934, Zimmerman and Crocker2, investigating the damage done to roses by mercuric chloride applied to the soil, found that the effect was due to the formation of free mercury in the soil, the vapour of which attacked the shoot. In the course of studying the uptake of sucrose by floating leaf disks of Atropa belladonna (deadly nightshade) and Lactuca sativa var. capitata (lettuce), we have found that the active uptake is greatly reduced by the presence of free mercury.

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