1887

Abstract

Thirteen isolates of were obtained from activated sludge plants in Victoria, Australia. Earlier 16S–23S rDNA genomic fingerprinting and partial 16S rDNA sequence data had suggested that these isolates might contain previously undescribed species. This view was confirmed here. A polyphasic taxonomic approach involving phenotypic characterization, near-complete 16S rDNA sequence data and DNA–DNA hybridization analyses support the view that seven novel genomic species can be differentiated in this group of isolates. However, when fluorescence hybridization (FISH) studies were performed with a 16S-rRNA-targeted probe specific for the genus , used to identify in activated sludge plants, all these strains responded positively. This suggests that these isolates would not have been missed in earlier FISH studies where their role as polyphosphate-accumulating bacteria has been questioned. This report describes these isolates and proposes that they be named (type strain B2=DSM 14961 =CIP 107474), (type strain 4B02=DSM 14964 =CIP 107468), (type strain 17A04=DSM 14968 =CIP 107470), (type strain 7N16=DSM 14971 =CIP 107465), (type strain AB1110=DSM 14962 =CIP 107472), (type strain 4N13=DSM 14670 =CIP 107469) and (type strain 9A01=DSM 14967 =CIP 107464).

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2003-07-01
2019-09-20
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