Document Detail


Genome of an endosymbiont coupling N2 fixation to cellulolysis within protist cells in termite gut.
MedLine Citation:
PMID:  19008447     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Termites harbor diverse symbiotic gut microorganisms, the majority of which are as yet uncultivable and their interrelationships unclear. Here, we present the complete genome sequence of the uncultured Bacteroidales endosymbiont of the cellulolytic protist Pseudotrichonympha grassii, which accounts for 70% of the bacterial cells in the gut of the termite Coptotermes formosanus. Functional annotation of the chromosome (1,114,206 base pairs) unveiled its ability to fix dinitrogen and recycle putative host nitrogen wastes for biosynthesis of diverse amino acids and cofactors, and import glucose and xylose as energy and carbon sources. Thus, nitrogen fixation and cellulolysis are coupled within the protist's cells. This highly evolved symbiotic system probably underlies the ability of the worldwide pest termites Coptotermes to use wood as their sole food.
Authors:
Yuichi Hongoh; Vineet K Sharma; Tulika Prakash; Satoko Noda; Hidehiro Toh; Todd D Taylor; Toshiaki Kudo; Yoshiyuki Sakaki; Atsushi Toyoda; Masahira Hattori; Moriya Ohkuma
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Science (New York, N.Y.)     Volume:  322     ISSN:  1095-9203     ISO Abbreviation:  Science     Publication Date:  2008 Nov 
Date Detail:
Created Date:  2008-11-14     Completed Date:  2008-12-03     Revised Date:  2009-11-19    
Medline Journal Info:
Nlm Unique ID:  0404511     Medline TA:  Science     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1108-9     Citation Subset:  IM    
Affiliation:
Ecomolecular Biorecycling Science Research Team, RIKEN Advanced Science Institute, Saitama 351-0198, Japan. yhongo@riken.jp
Data Bank Information
Bank Name/Acc. No.:
GENBANK/AP010656;  AP010657;  AP010658;  AP010659;  AP010660
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MeSH Terms
Descriptor/Qualifier:
Amino Acids / metabolism
Animals
Bacteroidetes / classification,  genetics*,  isolation & purification,  metabolism
Cellulose / metabolism*
Chromosomes, Bacterial / genetics
Digestive System / metabolism,  microbiology,  parasitology
Eukaryota / isolation & purification,  metabolism,  microbiology*
Fermentation
Genes, Bacterial
Genome, Bacterial*
Glycolysis
Isoptera / metabolism,  microbiology*,  parasitology
Metabolic Networks and Pathways
Molecular Sequence Data
Monosaccharides / metabolism
Nitrogen Fixation* / genetics
Oxidoreductases / genetics
Phylogeny
Symbiosis*
Wood / metabolism
Chemical
Reg. No./Substance:
0/Amino Acids; 0/Monosaccharides; 9004-34-6/Cellulose; EC 1.-/Oxidoreductases; EC 1.18.6.1/nitrogenase reductase

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


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