Communities of ammonia-oxidizing bacteria in activated sludge of various sewage treatment plants in Tokyo.
- T. Limpiyakorn, Y. Shinohara, F. Kurisu, O. Yagi
- BiologyFEMS Microbiology Ecology
- 1 October 2005
Degradation of natural estrogen and identification of the metabolites produced by soil isolates of Rhodococcus sp. and Sphingomonas sp.
- F. Kurisu, M. Ogura, S. Saitoh, A. Yamazoe, O. Yagi
- BiologyJournal of Bioscience and Bioengineering
- 1 June 2010
Degradation of polychlorinated biphenyls by microorganisms
A possible relationships between the structure and biodegradability of related biphenyl compounds was examined and only several strains of bacteria, Achromobacter sp.
Degradation of polycyclic aromatic hydrocarbons by a newly isolated dibenzofuran-utilizing Janibacter sp. strain YY-1
- A. Yamazoe, O. Yagi, H. Oyaizu
- ChemistryApplied Microbiology and Biotechnology
- 22 January 2004
Results indicate that strain YY-1 can catalyze angular dioxygenation, lateral dioxylation, and sulfoxidation and can cometabolize a variety of polycyclic aromatic hydrocarbons including dibenzo-p-dioxin, phenanthrene, and anthracene.
Effects of ammonium and nitrite on communities and populations of ammonia-oxidizing bacteria in laboratory-scale continuous-flow reactors.
- T. Limpiyakorn, F. Kurisu, Yoriko Sakamoto, O. Yagi
- BiologyFEMS Microbiology Ecology
- 1 June 2007
This study investigated the effects of ammonium and nitrite on ammonia-oxidizing bacteria (AOB) from an activated sludge process in laboratory-scale continuous-flow reactors using enriched culture possessing both N. oligotropha and N. europaea.
Transformation of Pseudomonas putida by electroporation.
- K. Iwasaki, H. Uchiyama, O. Yagi, T. Kurabayashi, K. Ishizuka, Y. Takamura
- EngineeringBioscience, biotechnology and biochemistry
- 23 May 1994
Electrotransformation efficiencies of relaxed plasmid DNA treated with topoisomerase I and that linearized by EcoRI digestion were high and are useful for the direct cloning of P. putida PpY101.
Identification of putative benzene-degrading bacteria in methanogenic enrichment cultures.
- Nahoko Sakai, F. Kurisu, O. Yagi, F. Nakajima, K. Yamamoto
- BiologyJournal of Bioscience and Bioengineering
- 1 December 2009
Isolation and Characterization of the Slime from a Cyanobacterium, Microcystis aeruginosa K-3A
- Michihiko Nakagawa, Y. Takamura, O. Yagi
- Biology
- 1 February 1987
A slime material was isolated from axenic cells of the cyanobacterium, Microcystis aeruginosa K-3A, grown in a synthetic medium by the application of a mild mechanical force followed by specific coagulation with calcium ions to form gel.
Growth Inhibition of Microcystis Cyanobacteria by L -Lysine and Disappearance of Natural Microcystis Blooms with Spraying
- Y. Takamura, Takashi Yamada, O. Yagi
- Biology
- 1 March 2004
Results confirmed in experimental ponds outdoors by spraying L-lysine onto natural Microcystis blooms in the summer of 1999 and 2000 and showed a dramatic change in the color and transparency of the pond surface water.
Random amplified polymorphic DNA (RAPD) analyses for discriminating genotypes of Microcystis cyanobacteria.
- H. Nishihara, H. Miwa, M. Watanabe, M. Nagashima, O. Yagi, Y. Takamura
- BiologyBioscience, biotechnology and biochemistry
- 23 July 1997
A good accordance between the RAPD analysis and allozyme divergence indicated a high reliability of both methods for discrimination of the affiliated groups of Microcystis.
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