Pseudoxanthomonas taiwanensis sp nov., a novel thermophilic, N2O-producing species isolated from hot springs

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Title:	Pseudoxanthomonas taiwanensis sp nov., a novel thermophilic, N2O-producing species isolated from hot springs
Authors:	Chen M.Y. Tsay S.S. Chen K.Y. Shi Y.C. Lin Y.T. Lin G.H.
Contributors:	生命科學
Keywords:	thermophilic Pseudoxanthomonas nitrous oxide
Date:	2002
Issue Date:	2009-12-04 14:32:51 (UTC+8)
Abstract:	Two novel thermophilic bacterial strains, with an optimum growth temperature of between 50 and 60 degreesC, were isolated from the Chi-ban Hot Springs in eastern Taiwan. Strains CB-225 and CB-226(T) were aerobic, thermophilic, non-sporulating, yellow-pigmented heterotrophic organisms. These strains exhibited an unusual denitrification reaction, reducing nitrite, but not nitrate, with the production of N2O only. On the basis of a phylogenetic analysis of 16S rDNA sequences, DNA-DNA similarity data, morphological, physiological and biochemical characteristics, and fatty acid compositions, it was found that the novel strains belonged to the genus Pseudoxanthomonas and represented a novel species within this genus, for which the name Pseudoxanthomonas taiwanensis is proposed; the type strain is CB-226(T) (= ATCC BAA-404(T) = CCRC 17172(T)). A taiwanensis differs from the only member of the genus Pseudoxanthomonas, the mesophilic species Pseudoxanthomonas broegbernensis, in that it exhibits a higher growth temperature and different morphological characteristics, such as the absence of polar flagella.
Relation:	INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY Volume: 52 Pages: 2155-2161
Appears in Collections:	[Department of Biology ] journal articles

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