Browsing by Author "Dobereiner, J."

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    Acetobacter diazotrophicus sp. nov., a Nitrogen-Fixing Acetic Acid Bacterium Associated with Sugarcane
    (1989-07) Gillis, M.; Kersters, K.; Hoste, B.; Janssens, D.; Stephan, M.P.; Teixeira, K.R.S.; Dobereiner, J.; De Ley, J.
    Results of deoxyribonUtleic acid (DNA)-ribosomal ribonucleic acid and DNA-DNA hybridizations, together with a phenotypic and chemotaxonomic analysis, revealed that nitrogen-fixing bacteria isolated from roots and stems of sugarcane belong to a new species in the genus Acetobacter, for which the name Acetobacter diazotrophicus sp. nov. is proposed. Strain LMG 7603 (= Dobereiner PAl 5 = ATCC 49037) is the type strain.
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    Ecological distribution of Spirillum lipoferum Beijerinck
    (1976) Dobereiner, J.; Marriel, I.E.; Nery, M.
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    Hydrogen-uptake Hydrogenase Activity in Nitrogen-fixing AzospiriHum brasilense
    (1982) Pedrosa, F.O.; Stephan, M.; Dobereiner, J.; Yates, M.G.
    N2-fixing Azospirillum brasilense possesses an Hruptake hydrogenase activity capable of Importing H,-dependent acetylene reduction by whoie cells starved of carbon metabolites. H2 did not support acetylene reduction in carbon-sufficient bacteria, although carbon subtrates did not inhibit H2-dependent respiration. H,-dependent respiration was extremely O2 sensitive and could not usually protect nitrogenase against inhibition by O2. H2 partly inhibited nitrogenase activity at sub-optimal 0, concentrations: this may be because H2-dependent respiration has a greater affinity for 0, but is less efficiently coupled to ATP production than is carbon-dependent respiration.