Effects of Salt Stress on Cell Structure and N2 Fixation in Blue-Green Alga Anabaena cylindrica
盐胁迫对柱胞鱼腥藻细胞结构和固氮作用的影响

Growing in the medium containing KCl, NaNO3, (NH4)2SO4, the cells of the blue-green alga inflated in size and became spherical, the pigment region gathered at one side of the cell and the other side became transparent. The changes in cell structure were reversible and the effect of KCl could be offset by CaCl2. Growing in the nitrogen-free medium containing 0.1 mol KCl the trichomes became yellow and the N2 fixing activity decreased by 95%.