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International Journal on Algae

ISSN for PRINT: 1521-9429

Institutional price:	$905.00
Issues per year:	4

Best Paper Award Selection - Editorial Board Site

2002, Volume4

112 pages

Issue price - $216.00

Active transport of inorganic carbon into cells of blue-green algae (Cyanophyta)

A. F. Tereshchenko
N.G. Kholodny Institute of Botany, National Academy of Sciences of Ukraine, 2, Tereshchenkavskaya St., 01001 Kiev, Ukraine

V. V. Podorvanov
N.G. Kholodny Institute of Botany, National Academy of Sciences of Ukraine, 2, Tereshchenkovskaya St., 01001 Kiev, Ukraine

E. K. Zolotareva
N.G. Kholodny Institute of Botany, National Academy of Sciences of Ukraine, 2, Tereshchenkovskaya St., 01010 Kiev, Ukraine

ABSTRACT

The review is devoted to studies in energy requirements of the mechanisms supplying the active transport of inorganic carbon (C_i ) into cells of blue-green algae. The data presented show that either the energy of the transmembrane eleetrochemical potential of hydrogen ions (Dm_H⁺) ог the transmembrane eleetrochemical potential of sodium ions (Dm_Na⁺) supplies the active transport of C_i via the plasmalemma of the Cyanophyta cells only within very narrow limits of environmental conditions. Neither (Dm_H⁺) nor (DmNa+(Dm_Na⁺) may be considered a universal source of energy for C_i transport. An assumption is advanced that the energy for the active transport of C_i is provided at the expense of ATP hydrolysis by НСО₃^- transport ATPase, the electron-transport chain of photosystem I participating directly.