Biochemical changes occurring during the germination of bacterial spores
نویسندگان
چکیده
منابع مشابه
Germination of single bacterial spores.
Changes in refractility and optical density occurring in individual spores of Bacillus cereus T and B. megaterium QM B1551 during germination were investigated by use of a Zeiss microscope photometer. The curves revealed that the germination process in single spores had two distinct phases; an initial rapid phase was followed by a second slower phase. Under the experimental condition employed, ...
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During germination and subsequent outgrowth of bacterial spores a number of well documented physical and biochemical changes occur (Gould & Dring, 1972). A wide variety of chemical and physical stimuli will initiate these changes, including potential metabolites such as amino acids, sugars and purine ribosides, non-nutrients such as EDTA and surfactants and physical treatments such as hydrostat...
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Changes in the content of starch, protein, and RNA and in the activity of their hydrolases in the rice endosperm (Oryza sativa L., variety IR8) were determined during the first week of germination without added nutrient both in the dark and in the light. Changes were generally more rapid in the dark than in the light. Oxygen uptake and RNase activity started to increase and the root protruded o...
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Dormant spores of Bacillus megaferium contain DPN+, TPN+, and FAD at levels comparable to those in log phase vegetative cells, but little or no reduced pyridine nucleotides are present. The levels of free nucleotides, the most abundant of which are the adenine nucleotides, are also similar in spores and cells. In cells, however, 80% of the adenine nucleotide pool is ATP, whereas in spores it is...
متن کاملBiochemical changes occurring during sporulation in Bacillus species.
is too fast to be measured by the methods used. The second step, which involves the acylation of the enzyme and the concomitant liberation of pnitrophenol, is characterized by the rate constant k2= 3-15 sec.-'. The third step involves the liberation of acetate and reactivation of the enzyme; the rate of this reaction is defined by kI3= 0-0254 sec.-'. 2. The rate constant k2 for the second step ...
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ژورنال
عنوان ژورنال: Biochemical Journal
سال: 1953
ISSN: 0306-3283
DOI: 10.1042/bj0540205