Phenylobacterium falsum sp. nov., an Alphaproteobacterium isolated from a nonsaline alkaline groundwater, and emended description of the genus Phenylobacterium.
A Gram-negative bacterium designated AC-49T was isolated from an alkaline groundwater with a pH 11.4. This organism formed rod-shaped cells, was strictly aerobic, catalase and oxidase positive, with an optimum growth temperature of 35 degrees C and an optimum pH value of 8.0. Strain AC-49T assimilated primarily amino acids and some Krebs cycle metabolites, did not use sugars for growth. The organism did not grow on L-phenylalanine or antipyrin. The G+ C content of DNA was 66.9 mol%. The phylogenetic analyses based on the 16S rRNA sequencing showed that the closest relatives of strain AC-49T were Phenylobacterium lituiforme and Phenylobacterium immobile, indicating that the organism is a member of the order Caulobacterales of the Alphaproteobacteria. Based on the phylogenetic analyses and distinct phenotypic characteristics, we are of the opinion that strain AC-49T, represents a novel species of the genus Phenylobacterium for which we propose the name Phenylobacterium falsum sp. nov.
Departamento de Zoologia and Centro de Neurociências de Biologia Celular, Universidade de Coimbra, 3004-517 Coimbra, Portugal.
Igor
I
Tiago
Vítor
V
Mendes
Carlos
C
Pires
Paula V
PV
Morais
António
A
Verśsimo
D000332:Aerobiosis; D000596:Amino Acids / Q000378:metabolism; D001482:Base Composition; D002241:Carbohydrates; D002264:Carboxylic Acids / Q000378:metabolism; D002374:Catalase / Q000032:analysis; D042063:Caulobacteraceae / Q000145:classification* / Q000166:cytology / Q000302:isolation & purification* / Q000502:physiology; D004269:DNA, Bacterial / Q000737:chemistry / Q000302:isolation & purification; D004275:DNA, Ribosomal / Q000737:chemistry / Q000302:isolation & purification; D020459:Genes, rRNA; D006863:Hydrogen-Ion Concentration; D008969:Molecular Sequence Data; D010088:Oxidoreductases / Q000032:analysis; D010802:Phylogeny; D012329:RNA, Bacterial / Q000235:genetics; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D017422:Sequence Analysis, DNA; D013696:Temperature; D014871:Water Microbiology
D000596:Amino Acids; D002241:Carbohydrates; D002264:Carboxylic Acids; D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D012329:RNA, Bacterial; D012336:RNA, Ribosomal, 16S; D010088:Oxidoreductases; D002374:Catalase