Heat Adaptation and Ion Exchange in Bacillus megaterium Spores

See allHide authors and affiliations

Science  10 Jan 1964:
Vol. 143, Issue 3602, pp. 141-143
DOI: 10.1126/science.143.3602.141


A new spore phenomenon is described in which induction of increased heat resistance occurs during the process of heating. In buffered environments the acid form of dormant mature bacterial spores shows a temperature dependent adaptation to heat which is correlated with the rate of uptake of Ca(OH)2 by titration at constant pH in neutral salt solution.