Differential response of photosynthetic apparatus of cyanobacterium Nostoc muscorum to Pb and Cd toxicity
作者： S. Dixit , D. P. Singh
DOI: 10.1007/S11099-015-0096-3
关键词:
摘要: Nostoc muscorum cells showed metal-induced decrease in the relative growth, pigment contents, O2 evolution, and Hill activity response to lead (Pb2+) cadmium (Cd2+) treatment, which was further accentuated with increase metal exposure time concentration. I50 concentrations (50% growth inhibitory concentrations) of Pb2+ Cd2+ for N. were 55 21 μg mL−1, respectively. These results indicated that more susceptible comparison Pb2+. The production relatively sensitive both heavy metals (I50: 16 10 mL−1 Cd2+, respectively) than 61 39 respectively). Further, measurement presence electron donors inhibition sites located on oxidizing site PSII. chlorophyll a (Chl a) phycobilisome (PB) fluorescence emission spectra energy transfer from Chl PB PSII reaction center
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