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Cytological Analysis of the Mother Cell Death Process during Sporulation in Bacillus subtilis

International Environmental and Agricultural Science, Tokyo University of Agriculture and Technology, Fuchu, Tokyo 183-8509, Japan

Received 13 November 2006/ Accepted 21 December 2006

We have identified the following events during the late stage in the mother cell in Bacillus subtilis: spore detachment from the polar site of the mother cell, membrane rupture, cell wall collapse, and release of the free spore. The membrane rupture was followed by mother cell lysis. Moreover, we found that NucB, an extracellular nuclease, is involved in DNA degradation after mother cell lysis.

Published ahead of print on 5 January 2007.

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