  Combined effects of 137Cs gamma irradiation and heavy metal ions Ni(II),
Zn(II), Ag(I) on Spirulina platensis cells using UV-VIS spectrometry after
three times irradiation and recultivation were discussed.
  It was shown, that possible use of gamma irradiation together with Ni(II) and
Zn(II) ions does not change nature of interaction of these metal ions on
Spirulina platensis. Whereas in contrast to the ions Ni (II) and Zn (II) for
silver ions, an increase in intensity is observed in both the irradiated and
non-irradiated states. The combined effects of ionizing radiation and other
stressors such is silver ions for Spirulina platensis exhibit synergetic
effects for C-phycocyanin as a stimulatory agent to raise the contents of it.
