Characterization of New Denitrifying Rhodobacter Strains Isolated from Photosynthetic Sludge for Wastewater Treatment

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概要

• 論文の詳細を見る

• New denitrifying strains of phototrophic bacteria isolated from photosynthetic sludge reactors for wastewater treatment were characterized. All of the new isolates were mesophilic, nonhalophilic, facultative photoheterotrophs that were able to grow by anaerobic photosynthesis, aerobic respiration, or nitrate respiration. They had ovoid cells that were motile by single polar flagella, formed vesicular photosynthetic membranes together with bacteriochlorophyll α and carotenoids of the spheroidene series, required biotin, thiamine, and biotin as growth factors, and utilized a wide variety of organic compounds as electron donor and carbon sources. In these respects, the isolates most closely resembled Rhodobacter sphaeroides. However, they differed from this species in utilizing malonate and dulcitol but not tartrate as carbon sources and in their inability to grow anaerobically in darkness with trimethylamine N-oxide or dimethylsulfoxide as a terminal oxidant. Partial sequencing of 16S rRNA genes provided evidence for genetic differences between the new isolates and R. sphaeroides or other members of the genus Rhodobacter. Activities of nitrate reductase, nitrite reductase, and nitrous oxide reductase were detected in intact cells of one of the new isolates. All these enzyme activities were induced by cultivation with nitrate.

• 公益社団法人日本生物工学会の論文
• 1995-01-25

著者

• Hiraishi Akira

  Laboratory Of Environmental Biotechnology Konishi Co.:(present Address)central Research Laboratories

• Hiraishi Akira

  Laboratory Of Environmental Biotechnology Konishi Co.

• Katsuro Urata

  Department Of Materials Chemistry And Bioengineering Oyama National College Of Technology

• MURAMATSU KEIGO

  Laboratory of Environmental Biotechnology, Konishi Co.

• Muramatsu Keigo

  Laboratory Of Environmental Biotechnology Konishi Co.:(present Address)department Of Biology Tokyo M

関連論文

• Use of Levulinic Acid by Rhodopseudomonas sp. No. 7 for Phototrophic Growth and Enhanced Hydrogen Evolution
• Use of Polymerase Chain Reaction-amplified 16S rRNA Gene Sequences to Identify Pink-pigmented Bacteria Found in a Potable Water Treatment System
• Discovery of Natural Photosynthesis using Zn-Containing Bacteriochlorophyll in an Aerobic Bacterium Acidiphilium rubrum
• Characterization of New Denitrifying Rhodobacter Strains Isolated from Photosynthetic Sludge for Wastewater Treatment
• Polymerase Chain Reaction Amplification and Restriction Fragment Length Polymorphism Analysis of 16S rRNA Genes from Methanogens
• Identification of the Psychrophilic Histamine-Producing Marine Bacteria Previously Referred to as the N-group Bacteria

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