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Time course of uptake of 14 C‐abscisic acid by Lemna gibba in relation to growth
Author(s) -
TILLBERG ELISABETH,
ELIASSON LENNART,
ERICSSON TOM
Publication year - 1980
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1980.tb03309.x
Subject(s) - lemna gibba , abscisic acid , lemna , dry matter , dry weight , botany , biology , chemistry , horticulture , aquatic plant , biochemistry , ecology , macrophyte , gene
The time course of growth of Lemna gibba L. in low concentrations of abscisic acid (ABA) and of uptake of 14 C‐labelled ABA into the plants was followed for up to 15 days. Fresh weight increase was arrested when the plants were transferred to ABA solutions. This inhibition was greatest during the first days after which a marked recovery took place. Dry matter production was only slightly affected by ABA. On a culture basis, the uptake of ABA was almost linear with time during the experimental period. The rate of uptake on a fresh weight basis was highest during the first two days but decreased rapidly from the third day. Most of the applied 14 C remained in the culture solution throughout the experiments. Plants transferred to a solution without ABA retained most of their accumulated 14 C. Possible explanations for the decrease in rate of ABA uptake and restoration of growth are discussed.