Activation energy for glucose-induced germination of Bacillus megaterium spores.
نویسندگان
چکیده
The maximum germination rate of Bacillus megaterium QM B1551 spores in glucose increased, and the lag before its attainment decreased, with increasing germination temperature. The activation energy for germination (mu = approximately 20 kcal/mole), based on rate or on lag, was consistent with an enzymatic mechanism.
منابع مشابه
Effects of temperature on activation, germination, and outgrowth of Bacillus megaterium spores.
The effects of temperature on the activation, glucose-induced germination, and outgrowth of Bacillus megaterium QM B1551 spores were investigated. There was no evidence for discontinuities in the response of spores to temperature in these processes reflecting reported thermal anomalies in the physical structure of water. Increasing the temperature of heat activation (aqueous suspensions, 5 min)...
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When heat-activated spores of Bacillus megaterium germinated in glucose-containing medium, 10 to 30% of the glucose was found to be oxidized to gluconate.
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Hyatt, Mildred T. (Pioneering Research Division. U.S. Army Natick Laboratories, Natick, Mass.), and Hillel S. Levinson. Effect of sugars and other carbon compounds on germination and postgerminative development of Bacillus megaterium spores. J. Bacteriol. 88:1403-1415. 1964.-A total of 77 carbon-containing compounds were tested for their ability to support germination and postgerminative develo...
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Spores of Bacillus megaterium QM B1551 germinate rapidly when exposed to a number of single-trigger germinant compounds, including glucose, proline, leucine, and certain inorganic salts. However, spores of strain PV361, a plasmidless QM B1551 derivative that lacks the GerU germinant receptor (GR) responsible for mediating germination in response to single-trigger compounds, can germinate effici...
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Spores of Bacillus megaterium QM B1551 germinated, elongated, and resporulated (microcycle sporogenesis) in simple chemically defined media which permitted no cell division. The second-stage spores thus produced were heat-stable and required heat activation for germination. The original amount of spore deoxyribonucleic acid tripled before completion of the cycle. Acetate and a small amount of a...
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ورودعنوان ژورنال:
- Journal of bacteriology
دوره 103 1 شماره
صفحات -
تاریخ انتشار 1970