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Sodium/proton antiporter activity in the plasma membrane and tonoplast of cucumber seedling roots treated with 200 mM NaCl for 24 h was determined. It was observed that plasma membrane and tonoplast antiporter activity was only present in membranes from salt-treated plants. In addition, the plasma membrane antiporter protein was present in membranes after induction with NaCl, whereas tonoplast antiporter...
Plant calcium pumps, similarly to animal Ca2+ pumps, belong to the superfamily of P-type ATPases comprising also the plasma membrane H+-ATPase of fungi and plants, Na+/K+ ATPase of animals and H+/K+ ATPase of mammalian gastric mucosa. According to their sensitivity to calmodulin the plant Ca2+-ATPases have been divided into two subgroups: type IIA (homologues of animal SERCA) and type IIB (homologues...
Kwasy fenolowe stanowią szeroką grupę allelozwiązków, które mogą w istotny sposób modyfikować procesy wzrostowe. Enzymem odgrywającym kluczową rolę we wzroście komórek roślinnych jest plazmolemowa ATPaza. Celem pracy było określenie wpływu kwasów fenolowych na wzrost elongacyjny siewek ogórków i aktywność plazmolemowej pompy protonowej. Spośród losowo wybranych kwasów fenolowych, dwa: salicylowy i...
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