A new species of the genus , for which the name sp. nov. is proposed, was isolated from the leaf sheath of sugar cane and from the pink sugar-cane mealy bug, , found on sugar cane growing in Queensland and northern New South Wales, Australia. The nearest phylogenetic relatives in the α-subclass of the are and , which have 98·8–99·3% and 97·9–98·5% 16S rDNA sequence similarity, respectively, to members of . On the basis of the phylogenetic positioning of the strains, DNA reassociation studies, phenotypic tests and the presence of the Q10 ubiquinone, this new species was assigned to the genus . No single phenotypic characteristic is unique to the species, but the species can be differentiated phenotypically from closely related members of the acetic acid bacteria by growth in the presence of 0·01% malachite green, growth on 30% glucose, an inability to fix nitrogen and an inability to grow with the L-amino acids asparagine, glycine, glutamine, threonine and tryptophan when D-mannitol was supplied as the sole carbon and energy source. The type strain of this species is strain SRI 1794 (=DSM 12717).


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