title: Stenotrophomonas terrae sp. nov. and Stenotrophomonas humi sp. nov., two nitrate-reducing bacteria isolated from soil.
abstract: Three Gram-negative, rod-shaped, non-spore-forming, nitrate-reducing isolates (R-32746, R-32768(T) and R-32729(T)) were obtained from soil. Analysis of repetitive sequence-based PCR showed that the three isolates represented two different strains. 16S rRNA gene sequence analysis and DNA-DNA hybridization placed them within the genus Stenotrophomonas and revealed that they were genotypically different from each other and from all recognized Stenotrophomonas species. Analysis of the fatty acid composition and physiological and biochemical tests allowed differentiation from their closest phylogenetic neighbours. They are therefore considered to represent two novel species, for which the names Stenotrophomonas terrae sp. nov. and Stenotrophomonas humi sp. nov. are proposed, with strains R-32768(T) (=LMG 23958(T)=DSM 18941(T)) and R-32729(T) (=LMG 23959(T)=DSM 18929(T)), respectively, as the type strains.
authors.affiliation: Laboratory of Microbiology, Department of Biochemistry, Physiology and Microbiology, Ghent University, K.L. Ledeganckstraat 35, B-9000 Gent, Belgium.
authors.forename: Kim
authors.initials: K
authors.lastname: Heylen
authors.affiliation: Laboratory of Microbiology, Department of Biochemistry, Physiology and Microbiology, Ghent University, K.L. Ledeganckstraat 35, B-9000 Gent, Belgium.
authors.forename: Bram
authors.initials: B
authors.lastname: Vanparys
authors.affiliation: Laboratory of Microbiology, Department of Biochemistry, Physiology and Microbiology, Ghent University, K.L. Ledeganckstraat 35, B-9000 Gent, Belgium.
authors.forename: Filip
authors.initials: F
authors.lastname: Peirsegaele
authors.affiliation: Laboratory of Microbiology, Department of Biochemistry, Physiology and Microbiology, Ghent University, K.L. Ledeganckstraat 35, B-9000 Gent, Belgium.
authors.forename: Liesbeth
authors.initials: L
authors.lastname: Lebbe
authors.affiliation: Laboratory of Microbiology, Department of Biochemistry, Physiology and Microbiology, Ghent University, K.L. Ledeganckstraat 35, B-9000 Gent, Belgium.
authors.forename: Paul
authors.initials: P
authors.lastname: De Vos
mesh_terms: D001426:Bacterial Proteins / Q000032:analysis; D015373:Bacterial Typing Techniques; D050260:Carbohydrate Metabolism; D016000:Cluster Analysis; D004269:DNA, Bacterial / Q000737:chemistry / Q000235:genetics; D004275:DNA, Ribosomal / Q000737:chemistry / Q000235:genetics; D004591:Electrophoresis, Polyacrylamide Gel; D005227:Fatty Acids / Q000032:analysis; D020459:Genes, rRNA; D008969:Molecular Sequence Data; D009566:Nitrates / Q000378:metabolism*; D009693:Nucleic Acid Hybridization; D010802:Phylogeny; D012329:RNA, Bacterial / Q000235:genetics; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D017422:Sequence Analysis, DNA; D012689:Sequence Homology, Nucleic Acid; D012988:Soil Microbiology; D013171:Spores, Bacterial / Q000166:cytology; D020588:Stenotrophomonas / Q000737:chemistry / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification*
chemical_list: D001426:Bacterial Proteins; D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D005227:Fatty Acids; D009566:Nitrates; D012329:RNA, Bacterial; D012336:RNA, Ribosomal, 16S