Jon_2013_ISME.J_7_1161

Reference

Title : Metabolic model for the filamentous 'Candidatus Microthrix parvicella' based on genomic and metagenomic analyses - Jon_2013_ISME.J_7_1161
Author(s) : Jon McIlroy S , Kristiansen R , Albertsen M , Michael Karst S , Rossetti S , Lund Nielsen J , Tandoi V , James Seviour R , Nielsen PH
Ref : Isme J , 7 :1161 , 2013
Abstract :

'Candidatus Microthrix parvicella' is a lipid-accumulating, filamentous bacterium so far found only in activated sludge wastewater treatment plants, where it is a common causative agent of sludge separation problems. Despite attracting considerable interest, its detailed physiology is still unclear. In this study, the genome of the RN1 strain was sequenced and annotated, which facilitated the construction of a theoretical metabolic model based on available in situ and axenic experimental data. This model proposes that under anaerobic conditions, this organism accumulates preferentially long-chain fatty acids as triacylglycerols. Utilisation of trehalose and/or polyphosphate stores or partial oxidation of long-chain fatty acids may supply the energy required for anaerobic lipid uptake and storage. Comparing the genome sequence of this isolate with metagenomes from two full-scale wastewater treatment plants with enhanced biological phosphorus removal reveals high similarity, with few metabolic differences between the axenic and the dominant community 'Ca. M. parvicella' strains. Hence, the metabolic model presented in this paper could be considered generally applicable to strains in full-scale treatment systems. The genomic information obtained here will provide the basis for future research into in situ gene expression and regulation. Such information will give substantial insight into the ecophysiology of this unusual and biotechnologically important filamentous bacterium.

PubMedSearch : Jon_2013_ISME.J_7_1161
PubMedID: 23446830
Gene_locus related to this paper: 9actn-r4z4q4 , 9actn-r4yy51 , 9actn-r4yzg1 , 9actn-r4z330 , 9actn-r4z3c7

Related information

Gene_locus 9actn-r4z4q4    9actn-r4yy51    9actn-r4yzg1    9actn-r4z330    9actn-r4z3c7

Citations formats

Jon McIlroy S, Kristiansen R, Albertsen M, Michael Karst S, Rossetti S, Lund Nielsen J, Tandoi V, James Seviour R, Nielsen PH (2013)
Metabolic model for the filamentous 'Candidatus Microthrix parvicella' based on genomic and metagenomic analyses
Isme J 7 :1161

Jon McIlroy S, Kristiansen R, Albertsen M, Michael Karst S, Rossetti S, Lund Nielsen J, Tandoi V, James Seviour R, Nielsen PH (2013)
Isme J 7 :1161