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Phylogenetic relationships among ammonia-oxidizing bacteria as revealed by gene sequences of glyceraldehyde 3-phosphate dehydrogenase and phosphoglycerate kinase

Authors
Journal
Journal of Bioscience and Bioengineering
1389-1723
Publisher
Elsevier
Publication Date
Volume
99
Issue
6
Identifiers
DOI: 10.1263/jbb.99.569
Keywords
  • Ammonia-Oxidizing Bacteria
  • Chemoautotrophic
  • Phylogenetic Relationship
  • Species Determination
Disciplines
  • Biology

Abstract

The three previously recognized genera of ‘ Nitrosolobus’, Nitrosospira and ‘ Nitrosovibrio’ were combined into one genus, Nitrosospira, on the basis of 16S rDNA sequence similarities. However, this classification has been controversial for some time, since the marked differences in their shapes suggest that they are not closely related. In this study, the phylogenetic analyses of the three groups using two genotypical markers, glyceraldehyde-3-phosphate dehydrogenase (GAP, gap), and 3-phosphoglycerate kinase (PGK, pgk), were performed. In the phylogenetic tree inferred from gap and pgk, the three genera appeared as clearly separated clusters. This is the first study of markers that are able to reveal the precise phylogenetic relationship among ‘ Nitrosolobus’, Nitrosospira and ‘ Nitrosovibrio’.

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