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Dispelling the "Nocardia amarae" myth: a phylogenetic and phenotypic study of mycolic acid-containing actinomycetes isolated from activated sludge foam.

Stainsby, Fiona M, Soddell, Jacques A, Seviour, Robert J, Upton, J and Goodfellow, Michael (2002) Dispelling the "Nocardia amarae" myth: a phylogenetic and phenotypic study of mycolic acid-containing actinomycetes isolated from activated sludge foam. Water Science & Technology, 46 (1-2). pp. 81-90. ISSN 0273-1223

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Abstract/Description

Right-angle branched filaments and rods micromanipulated from activated sludge foam and mixed liquor were identified as putatively novel members of the genera Gordonia, Mycobacterium and Rhodococcus using a combination of chemical, molecular and morphological data. Pyrolysis mass spectrometric analyses of gordoniae isolated in both the present and a previous study revealed pyro-groups, distinct from validly described Gordonia species, which could be equated with those based on morphological properties and 16S rDNA data. Putative gordoniae assigned to one of these groups were found to be closely related to strains currently identified as "Rhodococcus australis". These strains were also found to have properties consistent with their classification in the genus Gordonia. The results of this study highlight the limitations of the microscopic approach to filament identification and cast further doubt on the view that foaming can be attributed to members of one or a few Nocardia species.

Item Type: Article
Print ISSN: 0273-1223
Related URLs:
Uncontrolled Keywords: Activated sludge; Foam; Rods; Filaments; Microscopy; Gordonia; Mycobacterium; Rhodococcus; Pyrolysis; Mass spectrometry; Diverse organisms in foam;
University Divisions/Research Centres: Faculty of Health, Life & Social Sciences > School of Life Sciences
Dewey Decimal Subjects: 600 Technology > 620 Engineering > 628 Sanitary & municipal engineering
500 Science > 570 Life sciences; biology > 579 Microorganisms, fungi & algae
Library of Congress Subjects: T Technology > TD Environmental technology. Sanitary engineering
Q Science > QR Microbiology
Item ID: 1730
Depositing User: RAE Import
Date Deposited: 16 Jul 2008 15:35
Last Modified: 04 Jul 2012 16:25
URI: http://researchrepository.napier.ac.uk/id/eprint/1730

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