Wavelength dependence of energy transduction in Rhodopseudomonas sphaeroides: action spectrum of growth.


We determined the wavelength dependence of the specific growth rate of Rhodopseudomonas sphaeroides (the action spectrum of growth). A half-maximal (light-limited) growth rate was obtained when the culture vessel was illuminated with photon intensities between 0.8 x 10(14) and 3.5 x 10(14) photons cm-2 s-1 in the wavelength region between 400 and 950 nm. In… (More)