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Department of Microbiology and Cell Science, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL 32611-0700, USA
Correspondence
Eric W. Triplett
ewt{at}ufl.edu
A Gram-negative, rod-shaped, non-spore-forming betaproteobacterium (TRO-001DR8T) was isolated from humic-lake samples collected from northern Wisconsin, USA. On the basis of 16S rRNA gene sequence analysis, strain TRO-001DR8T belonged to the family Neisseriaceae, and the phylogenetic distance from its closest relative, Chromobacterium violaceum, was 95 %. Strain TRO-001DR8T lacked the violet pigmentation of C. violaceum and shared only 26 % DNA–DNA relatedness with C. violaceum. The DNA G+C content of strain TRO-001DR8T was 59 mol%. The predominant fatty acids were C16 : 1
7c + C16 : 17c 2-OH iso (52·5 %), C16 : 0 (21·7 %), C18 : 17c (8·0 %) and C12 : 0 (5·1 %). Strain TRO-001DR8T grew optimally at 35 °C and pH 6·0, did not utilize sucrose, but did use glucose, some organic acids and most protein amino acids. Biochemical, physiological, chemotaxonomic and phylogenetic analyses showed that strain TRO-001DR8T could not be assigned to any known genus of the Betaproteobacteria. Therefore, the isolate represents a novel genus and species, for which the name Aquitalea magnusonii gen. nov., sp. nov. is proposed. The type strain is TRO-001DR8T (=ATCC BAA-1216T=BCCM/LMG 23054T).
A table showing some genotypic, phenotypic and nutritional characteristics that distinguish strain TRO-001DR8T from related betaproteobacteria is available as supplementary material in IJSEM Online.
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