In vivo photoinactivation of ribulose bisphosphate carboxylase in the gas-vacuolate cyanobacteriumMicrocystis aeruginosa

摘要

Irradiation of buoyant, gas-vacuolate cells of the cyanobacteriumMicrocystis aeruginosaby 5·104Wm−2of blue light for 1 h caused a 5 loss of extractable ribulose bisphosphate carboxylase activity compared to dark and red-light controls. Ribulose bisphosphate carboxylase activity was unaffected by blue light in similar experiments conducted with cells containing collapsed gas vacuol