International Journal of Systematic and Evolutionary Microbiology, Vol 50, 459-469, Copyright © 2000 by Society for General Microbiology

ARTICLES

Hyphomonas adhaerens sp. nov., Hyphomonas johnsonii sp. nov. and Hyphomonas rosenbergii sp. nov., marine budding and prosthecate bacteria

RM Weiner, M Melick, K O'Neill and E Quintero
Department of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD 20742, USA

Three strains of prosthecate, budding bacteria, MHS-2(T), MHS-3(T) and VP6(T), were isolated from marine habitats including the open ocean (the pelagic zone), the offshore region (the neritic zone) and the hydrothermal vent region. A polyphasic approach including 16S rDNA sequencing, phenotypic analyses, serology, fatty acid analyses, membrane protein profiles and DNA--DNA hybridizations was used to place these strains in the genus Hyphomonas, a taxon of the alpha-Proteobacteria. The results of these analyses also showed that strains MHS-3(T), MHS-2(T) and VP6(T) each represent a new species of Hyphomonas. The names Hyphomonas adhaerens (type strain MHS-3(T), ATCC 43965(T)), Hyphomonas johnsonii (type strain MHS-2(T), ATCC 43964(T)) and Hyphomonas rosenbergii (type strain VP6(T), ATCC 43869(T)) are proposed for the new species. With these additions, Hyphomonas now contains eight species.

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