Diversity and distribution of a deeply branched novel proteobacterial group found in anaerobic-aerobic activated sludge processes

被引：134

作者：

Kong, YH ^{[1
]}

Ong, SL ^{[1
]}

Ng, WJ ^{[1
]}

Liu, WT ^{[1
]}

机构：

[1] Natl Univ Singapore, Dept Civil Engn, Singapore 117576, Singapore

来源：

ENVIRONMENTAL MICROBIOLOGY | 2002年 / 4卷 / 11期

关键词：

D O I：

10.1046/j.1462-2920.2002.00357.x

中图分类号：

Q93 [微生物学];

学科分类号：

071005 ; 100705 ;

摘要：

A novel coccobacilli group found previously in enhanced biological phosphorus removal (EBPR) systems was further revealed to have a high degree of diversity and distribution in various activated sludge systems. Phylogenetic analysis based on 14 existing and 18 newly retrieved 16S rRNA sequences revealed that these sequences formed a novel cohesive cluster with seven subgroups in the gamma-Proteobacteria. Fluorescence in situ hybridization with a set of probes designed specifically targeting the novel group at different hierarchical levels showed that the novel group with a coccoid (2-4 mum) to occasionally long-rod (up to 20 mum) shape widely distributed and in some cases predominated in sludge samples taken from nine lab- and full-scale EBPR systems (10-50% of total cells) and four conventional activated sludge systems (1-10%). Variation of predominance was also observed among those subgroups in systems showing deteriorated or effective EBPR activity.

引用

页码：753 / 757

页数：5

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