Culturable diversity of lithotrophic haloalkaliphilic sulfate-reducing bacteria in soda lakes and the description of Desulfonatronum thioautotrophicum sp. nov., Desulfonatronum thiosulfatophilum sp. nov., Desulfonatronovibrio thiodismutans sp. nov., and Desulfonatronovibrio magnus sp. nov.
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The cbbL gene is required for thiosulfate-dependent autotrophic growth of Bradyrhizobium japonicum.
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Bradyrhizobium japonicum is a facultative chemolithoautotroph capable of using thiosulfate and H(2) as an electron donor and CO(2) as a carbon source. In B. japonicum USDA110, the mutant of cbbL gene encoding a large subunit of ribulose 1,5-bisphosphate carboxylase/oxygenase (RuBisCO) was unable to grow using thiosulfate and H(2) as an electron donor. The cbbL deletion mutant was able to grow and oxidize thiosulfate in the presence of succinate. These results showed that the major route of CO(2) fixation for thiosulfate-dependent chemoautotrophic growth is the Calvin-Benson-Bassham cycle involving RuBisCO in B. japonicum. (+info)
Cultivation-independent detection of autotrophic hydrogen-oxidizing bacteria by DNA stable-isotope probing.
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