The effect of penicillin on the encystment of Bdellovibrio sp. strain W |
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Authors: | John J Tudor Joseph A DiGiuseppe |
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Institution: | (1) Biology Department, Saint Joseph's University, 5600 City Avenue, 19131 Philadelphia, PA, USA;(2) Present address: Washington University School of Medicine, 63110 St. Louis, MO, USA |
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Abstract: | When penicillin, and other inhibitors of peptidoglycan synthesis were added to encysting cultures of Bdellovibrio strain W, the encysting process continued, resulting in the production of cysts which were spherical in shape. Transmission electron micrographs of these spherical bdellocysts revealed the absence of an outer cyst wall. These cysts, devoid of cyst wall, were capable of germination under appropriate condition with the emergence from the prey ghost of highly motile spheroplasts. Withdrawl of the antibiotics after encystment had begun led to the production of spherical cysts that were surrounded by an outer cyst wall. |
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Keywords: | Bdellovibrio Bdellocyst Cyst Cyst wall Encystment Penicillin Peptidoglycan Peptidoglycan synthesis |
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