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Copper Toxicity In Erwinia Amylovora : An X-Ray Microanalytical Study, N. Hodson, D. C. Sigee
Copper Toxicity In Erwinia Amylovora : An X-Ray Microanalytical Study, N. Hodson, D. C. Sigee
Scanning Microscopy
The effect of Cu2+ ions on the growth and elemental composition of the phytopathogenic bacterium Erwinia amylovora was investigated by in vitro culture in nutrient broth supplemented with CuSO4.
No detectable inhibition in bacterial growth occurred with medium supplemented at 10-4M Cu (compared to control medium with no added Cu), but partial inhibition occurred at 10-3M Cu (limiting toxicity) and complete inhibition at 10-2M Cu.
Under conditions of limiting toxicity, incubation in Cu2+ ions leads to a reduction in the general synthesis of cell materials and the formation of abnormally …