Genomic and Physiological Comparisons Between Heterotrophic Thiobacilli and Acidiphilium cryptum, Thiobacillus versutus sp. nov., and Thiobacillus acidophilus nom. rev.
نویسندگان
چکیده
منابع مشابه
Colonial heterogeneity of Thiobacillus versutus.
In acetate-limited chemostat cultures started with single-colony cultures of Thiobacillus versutus, a mutant appeared after approximately 85 volume changes. The inhomogeneity of the culture was detected by the development of two different types of colonies on agar plates. When a pure culture of the mutant was grown in a chemostat, parent colonies appeared after almost the same period of time. E...
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The complete 5S and 16S ribosomal DNA (rDNA) sequences of the facultatively chemolithotrophic bacterium Thiobacillus cuprinus and results of a comparison of these sequences with homologous sequences from several proteobacterial species supported affiliation of T. cuprinus with the beta 1 subgroup of the Proteobacteria. T. cuprinus, Thiobacillus intermedius, Thiobacillus perometabolis, and Thiob...
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Forty strains isolated from soil taken from a hay meadow were assigned to the genus Dactylosporangium on the basis of colonial properties. 16S rRNA gene sequence analysis showed that the isolates formed a group that was most closely related to the type strain of Dactylosporangium aurantiacum, but well separated from other Dactylosporangium type strains and from 'Dactylosporangium salmoneum' NRR...
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At optimal growth pH (3.0) Thiobacillus acidophilus maintained an internal pH of 5.6 (delta pH of 2.6 units) and a membrane potential (delta psi) of some +73 mV, corresponding to a proton motive force (delta p) of -83 mV. The internal pH remained poised at this value through external pH values of 1 to 5, so that the delta pH increased with decreasing external pH. The positive delta psi increase...
متن کاملCytoplasmic pH homeostasis in an acidophilic bacterium, Thiobacillus acidophilus.
The cytoplasmic buffering capacity of Thiobacillus acidophilus (along with membrane properties) is responsible for the cytoplasmic pH homeostasis in metabolically compromised cells. When a large influx of H+ occurs, the cytoplasmic buffering capacity prevents drastic changes in pH; in addition, this influx, by increasing the positive membrane potential, eventually leads to a cessation of furthe...
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ژورنال
عنوان ژورنال: International Journal of Systematic Bacteriology
سال: 1983
ISSN: 0020-7713,1465-2102
DOI: 10.1099/00207713-33-2-211