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Based on equal number of cells, supplementation of 10-6M cadmium highly stimulated the intracellular amylase, GGT, LDH as well as the glucose and urea content of E. carotovora var. carotovora cells. This was coupled with initiation of highly active GOT, CPK as well as accumulation of cholesterol in the cells. Lanthanum was less active and unable to initiate GOT or CPK. Nickel was almost without effect though reduced LDH activity without initiating either enzyme or cholesterol production. Similar stimulations and/or initiations were observed, though to variable extents, when the same concentration of the three elements were supplied to E. carotovora var. citullis or E. toxica. In the meantime, lanthanum arrested GPT whereas nickel arrested GOT activity of E. toxica. The highest yield of amylase, GPT, GGT or glucose was obtained when E. carotovora var. carotovora was supplemented with Cd + Ni. The highest urea level was recorded in Erwinia carotovara var. citrulis, amended with Cd + La.
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