A phylogenetically novel aerobic bacterium was isolated from activated sludge in a wastewater treatment system. The isolate, named Gemmatimonas aurantiaca gen. and sp. nov., was a Gram-negative, rod-shaped aerobe. Cells often appeared to divide by budding replication. Comparative analyses of 16S rRNA gene sequences indicated that the new bacterium should be classified a brand-new phylum-level lineage in the bacterial domain. Based on the phylogenetic and phenotypic findings, we proposed a new phylum with the name of Gemmatimonadetes phyl. nov. for the new organism, and the proposal was validated on September, 2003.
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Transmission electron micrograph of Gemmatimonas aurantiaca showing a Gram-negative cell envelope structure (Bar: 0.5µm)
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| Relational Information |
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AIST Today Vol. 4, No.1 (2004) 7-9
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No.12 Spring 2004
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