Quantitative Studies of Rod-Coccus Morphogenesis in a Temperature-sensitive Rod- Mutant of Bacillus subtilis
نویسندگان
چکیده
منابع مشابه
Electron microscope study of the rod-to-coccus shape change in a temperature-sensitive rod- mutant of Bacillus subtilis.
The changes in cell morphology of Bacillus subtilis rodB during a temperature shift from 20 to 42 degrees C, in the absence of added anions, are described. At 20 degrees C the organisms grow as rods but gradually become spherical in shape when placed at 42 degrees C. The shape change is initiated by an increase in diameter at the cell equator, resulting in a bulged morphology, which is further ...
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The Mg2+ requirement of a morphological mutant of Bacillus subtlis, rodB strain 104 was highly temperature sensitive in the presence of halide or nitrate anions. Likewise the morphological change from rod shapes to spheres was dependent upon temperature, the same anions, and the Mg2+ concentration. The three factors interacted. Other rodB mutants behaved similarly. If the rodB strain 104 in its...
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A new mutant of Bacillus subtilis defective in the outgrowth phase of spore germination has been isolated. When incubated at 46 C, the spores of the mutant gave rise to abnormally large swollen cells. Genetic crosses show that the mutant is different from the three previously described. The genetic analysis indicates two regions of the B. subtilis chromosome involved in the control of the spore...
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Wall teichoic acid (WTA) is essential for the growth of Bacillus subtilis 168. To clarify the function of this polymer, the WTAs of strains 168, 104 rodB1, and 113 tagF1 (rodC1) grown at 32 and 42 degrees C were characterized. At the restrictive temperature, the rodB1 and tagF1 (rodC1) mutants undergo a rod-to-sphere transition that is correlated with changes in the WTA content of the cell wall...
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A class of rifampin-resistant (rfm) mutations of Bacillus subtilis suppresses the temperature-sensitive sporulation of a fusidic acid-resistant mutant. FUS426, which has an altered elongation factor G. The rfm mutation suppressed only the sporulation defect caused by the elongation factor G mutation, but could not suppress other types of induced sporulation defects. Genetic and biochemical anal...
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ژورنال
عنوان ژورنال: Microbiology
سال: 1980
ISSN: 1350-0872,1465-2080
DOI: 10.1099/00221287-121-1-93