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An unknown substance found in bacteria (Escherichia coli) is especially effective in attracting the vegetative amoebae of the cellular slime mold, Dictyostelium discoideum. However, the aggregating amoebae are not attracted to it at all. On the other hand, the vegetative amoebae show very little chemotactic response to cyclic adenosine monophosphate (cyclic AMP), whereas the aggregating amoebae are exceptionally responsive to it. It is suggested that the new factor may be used in food seeking, whereas cyclic AMP, the chemotactic substance responsible for aggregation, is the acrasin of this species. The important point is that the amoebae are differentially stage-specific in their responses to these two chemotactic agents.
J T Bonner, and
E M Hall, and
W Sachsenmaier, and
B K Walker
December 1975,
Proceedings of the National Academy of Sciences of the United States of America,
J T Bonner, and
E M Hall, and
W Sachsenmaier, and
B K Walker
January 1977,
Developmental biology,
J T Bonner, and
E M Hall, and
W Sachsenmaier, and
B K Walker
October 1974,
Proceedings of the National Academy of Sciences of the United States of America,
J T Bonner, and
E M Hall, and
W Sachsenmaier, and
B K Walker
February 1978,
Proceedings of the National Academy of Sciences of the United States of America,
J T Bonner, and
E M Hall, and
W Sachsenmaier, and
B K Walker
August 1979,
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J T Bonner, and
E M Hall, and
W Sachsenmaier, and
B K Walker
January 1983,
Methods in enzymology,
J T Bonner, and
E M Hall, and
W Sachsenmaier, and
B K Walker
June 1967,
The Biological bulletin,
J T Bonner, and
E M Hall, and
W Sachsenmaier, and
B K Walker
August 1966,
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J T Bonner, and
E M Hall, and
W Sachsenmaier, and
B K Walker
September 1972,
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J T Bonner, and
E M Hall, and
W Sachsenmaier, and
B K Walker
October 1970,
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