Ref ID : 3986
I. Joan Lorch and Kwang W. Jeon; Nuclear Lethal Effect and Nucleocytoplasmic Incompatibility Induced by Endosymbionts in Amoeba proteus. J.Protozool. 29(3):468-470, 1982
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The role of bacterial endosymbionts in the acquisition of new phenotypic characters was studied by transplanting nuclei from an uninfected strain of Amoeba proteus into the enucleated cytoplasm of a symbiont-carrying strain. After 1-10 cell cycles, the nuclei were tested for two characters: compatibility with uninfected and infected cytoplasm, and their lethal effect against amoebae of the uninfected parent strain. A significant number of transplanted nuclei displayed both of the new phenotypic traits after a few divisions in the infected cytoplasm. Thus the influence of these endosymbionts on the nucleus of A. proteus was virtually instantaneous.