Cannibalism by Sporulating Bacteria
Top Cited Papers
- 25 July 2003
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 301 (5632) , 510-513
- https://doi.org/10.1126/science.1086462
Abstract
Spore formation by the bacterium Bacillus subtilis is an elaborate developmental process that is triggered by nutrient limitation. Here we report that cells that have entered the pathway to sporulate produce and export a killing factor and a signaling protein that act cooperatively to block sister cells from sporulating and to cause them to lyse. The sporulating cells feed on the nutrients thereby released, which allows them to keep growing rather than to complete morphogenesis. We propose that sporulation is a stress-response pathway of last resort and that B. subtilis delays a commitment to spore formation by cannibalizing its siblings.Keywords
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