Abstract
The draft genome of Clostridium beijerinckii strain Ne1 was reconstructed from the metagenomic sequence of a mixed-microbial consortium that produced commercially significant quantities of hydrogen from xylan as a sole feedstock. The organism possesses relatively limited hemicellulolytic capacity and likely requires the action of other organisms to completely degrade xylan.
Highlights
The termite hindgut has been described as the world’s smallest bioreactor [1]
Ne1 was a strain of Clostridium beijerinckii, Ne2 was a novel taxon related to Clostridium magnum [6], while Ne3 was a Ruminiclostridium species [7]
Ne1 was the second most abundant clostridia in the 1 TC consortia, accounting for 27% of the reads in the 1 TC metagenome
Summary
The termite hindgut has been described as the world’s smallest bioreactor [1]. Within the gut, lignocellulose is digested by the host in conjunction with its microbiome, and various byproducts, including hydrogen, are produced in the process [2]. Lignocellulose is digested by the host in conjunction with its microbiome, and various byproducts, including hydrogen, are produced in the process [2]. One recently derived hydrogenogenic mixed-microbial culture (designated 1 TC) obtained from the gut of a worker Nasutitermes exitiosus (collected 33°45=34ЉS; 150°59=25ЉE), was capable of producing commercially significant quantities of hydrogen, with little CO2, using xylan as a feedstock. The 1 TC metagenome was sequenced using Illumina HiSeq 2000 and assembled using Velvet 1/1/07 [4].
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