Quadricoccus australiensis gen. nov., sp. nov., a beta-proteobacterium from activated sludge biomass.

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Title Quadricoccus australiensis gen. nov., sp. nov., a beta-proteobacterium from activated sludge biomass.
Author Maszenan, A. M.; Seviour, R. J.; Patel, Bharat Kumar; Schumann, P.
Journal Name International Journal of Systematic and Evolutionary Microbiology
Year Published 2002
Place of publication Reading, UK
Publisher Society of General Microbiology
Abstract A Gram-negative coccus, designated strain Ben 117(T), was obtained in axenic culture by micromanipulation from an Australian activated sludge biomass sample, which had been subjected to chlorination in order to alleviate problems associated with foaming and bulking. This isolate was a strict aerobe and grew in axenic culture, also appearing in biomass samples as cocci or clusters of cocci in tetrads, thus resembling the morphotype 'G-bacteria' seen commonly in activated sludge samples. Strain Ben 117(T) was non-motile, aerobic, oxidase-negative and catalase-positive and grew between 15 and 30 degrees C, with an optimum of 25--30 degrees C. The pH range for growth was between 6.0 and 8.5, with an optimum of 7.5--8.5. The isolate stained positively for intracellular polyphosphate and poly-beta-hydroxybutyrate and its G+C content was 67 mol%. 16S rDNA sequence analysis suggests that strain Ben 117(T) is phylogenetically different from members of the genera Amaricoccus, Gram-negative 'G-bacteria' isolated previously in this laboratory. Ben 117(T) is a member of the Rhodocyclus group in the beta-Proteobacteria and equidistantly placed (similarity value of 95%) between Ferribacterium limneticum and Dechloromonas agitata (mean similarity value of 92% with the genus Rhodocyclus). Based on phenotypic and phylogenetic evidence, it is proposed that strain Ben 117(T) be designated a novel species in a new genus, Quadricoccus australiensis gen. nov., sp. nov.; the type strain is Ben 117(T) (=NCIMB 13738(T)=CIP 107055(T)).
Peer Reviewed Yes
Published Yes
Publisher URI http://ijs.sgmjournals.org/
Alternative URI http://ijs.sgmjournals.org/cgi/content/abstract/52/1/223
Volume 52
Page from 223
Page to 228
ISSN 1466-5026
Date Accessioned 2003-06-04
Date Available 2009-09-16T07:42:21Z
Language en_AU
Research Centre Queensland Micro and Nanotechnology Centre
Faculty Faculty of Science
Subject PRE2009-Science & Technology
URI http://hdl.handle.net/10072/6974
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1

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