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Action du diméthylsulfoxyde sur l'absorption du 42 K et du glucose‐ 14 C (U) par des disques foliaires de Zea mays et Pelargonium zonale
Author(s) -
CHAMEL ANDRÉ,
CARLIER GEORGES
Publication year - 1974
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.1399-3054.1974.tb03739.x
Subject(s) - mannitol , zea mays , absorption (acoustics) , chemistry , dimethyl sulfoxide , botany , biology , biochemistry , agronomy , physics , organic chemistry , acoustics
42 K and 14 C (U)‐glucose uptake by foliar discs of maize ( Zea mays L.) and pelargonium ( Pelargonium zonale L.) is inhibited by dimethyl sulfoxide (DMSO) at concentrations of 5 and 10%. This effect increases with the duration of the absorption and appears with varied concentrations in K or glucose. In most cases, this inhibitory effect is less with aged discs than with freshly cut discs. Besides, the DMSO (10%) enhances the exsorption of 42 K by foliar discs of maize. The effects of DMSO and two osmotic agents, mannitol and polyethylene glycol 1000, on the uptake and water content of discs are compared. It seems that the effect of DMSO on the uptake is not only an osmotic effect. It may also be related to other actions of this substance in affecting an active uptake.