Metagenome approaches revealed a biological prospect for improvement on mesophilic cellulose degradation

Verfasser / Beitragende:
[Yubo Wang, Yu Xia, Feng Ju, Tong Zhang]
Ort, Verlag, Jahr:
2015
Enthalten in:
Applied Microbiology and Biotechnology, 99/24(2015-12-01), 10871-10879
Format:
Artikel (online)
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024 7 0 |a 10.1007/s00253-015-6945-y  |2 doi 
035 |a (NATIONALLICENCE)springer-10.1007/s00253-015-6945-y 
245 0 0 |a Metagenome approaches revealed a biological prospect for improvement on mesophilic cellulose degradation  |h [Elektronische Daten]  |c [Yubo Wang, Yu Xia, Feng Ju, Tong Zhang] 
520 3 |a Improvement on the bioconversion of cellulosic biomass depends much on the expanded knowledge on the underlying microbial structure and the relevant genetic information. In this study, metagenomic analysis was applied to characterize an enriched mesophilic cellulose-converting consortium, to explore its cellulose-hydrolyzing genes, and to discern genes involved in methanogenesis. Cellulose conversion efficiency of the mesophilic consortium enriched in this study was around 70%. Apart from methane, acetate was the major fermentation product in the liquid phase, while propionate and butyrate were also detected at relatively high concentrations. With the intention to uncover the biological factors that might shape the varying cellulose conversion efficiency at different temperatures, results of this mesophilic consortium were then compared with that of a previously reported thermophilic cellulose-converting consortium. It was found that the mesophilic consortium harbored a larger pool of putative carbohydrate-active genes, with 813 of them in 54 GH modules and 607 genes in 13 CBM modules. Methanobacteriaceae and Methanosaetaceae were the two methanogen families identified, with a preponderance of the hydrogenotrophic Methanobacteriaceae. In contrast to its relatively high diversity and high abundance of carbohydrate-active genes, the abundance of genes involved in the methane metabolism was comparatively lower in the mesophilic consortium. A biological enhancement on the methanogenic process might serve as an effective option for the improvement of the cellulose bioconversion at mesophilic temperature. 
540 |a Springer-Verlag Berlin Heidelberg, 2015 
690 7 |a Mesophilic  |2 nationallicence 
690 7 |a Cellulose degradation  |2 nationallicence 
690 7 |a Metagenomics  |2 nationallicence 
690 7 |a Methanogenesis  |2 nationallicence 
700 1 |a Wang  |D Yubo  |u Environmental Biotechnology Lab, The University of Hong Kong SAR, Pokfulam Road, Hong Kong, China  |4 aut 
700 1 |a Xia  |D Yu  |u Environmental Biotechnology Lab, The University of Hong Kong SAR, Pokfulam Road, Hong Kong, China  |4 aut 
700 1 |a Ju  |D Feng  |u Environmental Biotechnology Lab, The University of Hong Kong SAR, Pokfulam Road, Hong Kong, China  |4 aut 
700 1 |a Zhang  |D Tong  |u Environmental Biotechnology Lab, The University of Hong Kong SAR, Pokfulam Road, Hong Kong, China  |4 aut 
773 0 |t Applied Microbiology and Biotechnology  |d Springer Berlin Heidelberg  |g 99/24(2015-12-01), 10871-10879  |x 0175-7598  |q 99:24<10871  |1 2015  |2 99  |o 253 
856 4 0 |u https://doi.org/10.1007/s00253-015-6945-y  |q text/html  |z Onlinezugriff via DOI 
898 |a BK010053  |b XK010053  |c XK010000 
900 7 |a Metadata rights reserved  |b Springer special CC-BY-NC licence  |2 nationallicence 
908 |D 1  |a research-article  |2 jats 
949 |B NATIONALLICENCE  |F NATIONALLICENCE  |b NL-springer 
950 |B NATIONALLICENCE  |P 856  |E 40  |u https://doi.org/10.1007/s00253-015-6945-y  |q text/html  |z Onlinezugriff via DOI 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Wang  |D Yubo  |u Environmental Biotechnology Lab, The University of Hong Kong SAR, Pokfulam Road, Hong Kong, China  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Xia  |D Yu  |u Environmental Biotechnology Lab, The University of Hong Kong SAR, Pokfulam Road, Hong Kong, China  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Ju  |D Feng  |u Environmental Biotechnology Lab, The University of Hong Kong SAR, Pokfulam Road, Hong Kong, China  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Zhang  |D Tong  |u Environmental Biotechnology Lab, The University of Hong Kong SAR, Pokfulam Road, Hong Kong, China  |4 aut 
950 |B NATIONALLICENCE  |P 773  |E 0-  |t Applied Microbiology and Biotechnology  |d Springer Berlin Heidelberg  |g 99/24(2015-12-01), 10871-10879  |x 0175-7598  |q 99:24<10871  |1 2015  |2 99  |o 253