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Abscisic acid stimulates sucrose uptake into tobacco leaf discs
Author(s) -
Vreugdenhil D.,
Kerckhoffs L. H. J.
Publication year - 1992
Publication title -
acta botanica neerlandica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.871
H-Index - 87
eISSN - 1438-8677
pISSN - 0044-5983
DOI - 10.1111/j.1438-8677.1992.tb00495.x
Subject(s) - abscisic acid , sucrose , nicotiana tabacum , stimulation , botany , osmotic concentration , chemistry , biology , horticulture , biochemistry , neuroscience , gene
SUMMARY The effects of abscisic acid (ABA) on the uptake of sucrose into discs from tobacco ( Nicotiana tabacum ) source leaves were studied. ABA stimulated an increase in sucrose uptake up to three‐fold, depending on the osmotic potential of the medium. Maximal stimulation was observed around 200 mOsm, and at 1 μ m ABA. A tentative explanation for the discrepancy between these results and the previously described inhibition by ABA of sucrose uptake into leaf discs from other plant species is presented.