Please use this identifier to cite or link to this item: https://doi.org/10.1038/ismej.2010.125
Title: Multiple syntrophic interactions in a terephthalate-degrading methanogenic consortium
Authors: Lykidis, A.
Chen, C.-L. 
Tringe, S.G.
McHardy, A.C.
Copeland, A.
Kyrpides, N.C.
Hugenholtz, P.
MacArie, H.
Olmos, A.
Monroy, O.
Liu, W.-T. 
Keywords: carbon cycling
metagenomics
methanogenesis
microbial diversity
syntroph
Issue Date: Jan-2011
Citation: Lykidis, A., Chen, C.-L., Tringe, S.G., McHardy, A.C., Copeland, A., Kyrpides, N.C., Hugenholtz, P., MacArie, H., Olmos, A., Monroy, O., Liu, W.-T. (2011-01). Multiple syntrophic interactions in a terephthalate-degrading methanogenic consortium. ISME Journal 5 (1) : 122-130. ScholarBank@NUS Repository. https://doi.org/10.1038/ismej.2010.125
Abstract: Terephthalate (TA) is one of the top 50 chemicals produced worldwide. Its production results in a TA-containing wastewater that is treated by anaerobic processes through a poorly understood methanogenic syntrophy. Using metagenomics, we characterized the methanogenic consortium inside a hyper-mesophilic (that is, between mesophilic and thermophilic), TA-degrading bioreactor. We identified genes belonging to dominant Pelotomaculum species presumably involved in TA degradation through decarboxylation, dearomatization, and modified Β-oxidation to H2/CO2 and acetate. These intermediates are converted to CH4/CO2 by three novel hyper-mesophilic methanogens. Additional secondary syntrophic interactions were predicted in Thermotogae, Syntrophus and candidate phyla OP5 and WWE1 populations. The OP5 encodes genes capable of anaerobic autotrophic butyrate production and Thermotogae, Syntrophus and WWE1 have the genetic potential to oxidize butyrate to CO2/H2 and acetate. These observations suggest that the TA-degrading consortium consists of additional syntrophic interactions beyond the standard H 2-producing syntroph-methanogen partnership that may serve to improve community stability.
Source Title: ISME Journal
URI: http://scholarbank.nus.edu.sg/handle/10635/91088
ISSN: 17517362
DOI: 10.1038/ismej.2010.125
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