Document Detail

Microbiology of the 'G-bacteria' in activated sludge.
MedLine Citation:
PMID:  11214792     Owner:  NLM     Status:  MEDLINE    
This review discusses a group of bacteria, the 'G-bacteria', which have a distinctive morphology of cocci in tetrads, sheets or clusters, that are seen in large numbers in many activated sludge biomass samples. Isolates of 'G-bacteria' that have been grown axenically are phylogenetically diverse. The Gram-negative members include several alpha- and beta-proteobacteria, among which is the genus Amaricoccus, while the Gram-positive 'G-bacteria' contain several members of the actinobacteria. It is probable that other, as yet uncharacterized, 'G-bacteria' exist in activated sludge. The hypothesis that these 'G-bacteria' are detrimental to the process of enhanced biological phosphate removal by competing for substrates anaerobically with the phosphate-accumulating bacteria in such systems, based as it is largely on mixed-culture studies, receives little support from studies using those available in pure culture. The evidence on which these conclusions are founded is discussed, as are the arguments used to explain why these 'G-bacteria' all appear to thrive under conditions found in certain activated sludge systems.
R J Seviour; A M Maszenan; J A Soddell; V Tandoi; B K Patel; Y Kong; P Schumann
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Review    
Journal Detail:
Title:  Environmental microbiology     Volume:  2     ISSN:  1462-2912     ISO Abbreviation:  Environ. Microbiol.     Publication Date:  2000 Dec 
Date Detail:
Created Date:  2001-02-14     Completed Date:  2001-03-29     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  100883692     Medline TA:  Environ Microbiol     Country:  England    
Other Details:
Languages:  eng     Pagination:  581-93     Citation Subset:  IM    
Biotechnology Research Centre, La Trobe University, Bendigo, Victoria, Australia.
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MeSH Terms
Actinobacteria* / classification,  growth & development
Glucose / metabolism
Glycogen / metabolism
Micrococcus / classification,  growth & development
Phosphates / metabolism
Propionibacteriaceae / classification,  growth & development
Proteobacteria* / classification,  growth & development
Sewage / microbiology*
Reg. No./Substance:
0/Phosphates; 0/Sewage; 50-99-7/Glucose; 9005-79-2/Glycogen

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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