Genomic analysis of Hyphomonas neptunium contradicts 16S rRNA gene-based phylogenetic analysis: implications for the taxonomy of the orders ‘Rhodobacterales’ and Caulobacterales

Author:

Badger Jonathan H.1,Eisen Jonathan A.1,Ward Naomi L.1

Affiliation:

1. The Institute for Genomic Research, 9712 Medical Center Dr., Rockville, MD 20850, USA

Abstract

Hyphomonas neptunium is a marine prosthecate α-proteobacterium currently classified as a member of the order ‘Rhodobacterales’. Although this classification is supported by 16S rRNA gene sequence phylogeny, 23S rRNA gene sequence analysis, concatenated ribosomal proteins, HSP70 and EF-Tu phylogenies all support classifying Hyphomonas neptunium as a member of the Caulobacterales instead. The possible reasons why the 16S rRNA gene sequence gives conflicting results in this case are also discussed.

Publisher

Microbiology Society

Subject

General Medicine,Ecology, Evolution, Behavior and Systematics,Microbiology

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