The effects of growth conditions on the esterases of Paramecium aurelia
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The esterase isozymes of Paramecium aurelia grown in the presence and absence of bacteria were examined by starch gel electrophoresis. Where present, bacteria make a positive contribution to the esterase zymograms. Different bacteria contribute different esterases. Paramecia growing in axenic medium possess a different esterase which is not produced by the same parmecia growing in the presence of bacteria. This axenic esterase disappears when bacteria are added back to the medium.
KeywordsStarch Growth Condition Positive Contribution Axenic Medium Esterase Isozyme
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