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Termite symbiotic systems: efficient bio-recycling of lignocellulose
  • M. Ohkuma
  • Biology, Medicine
  • Applied Microbiology and Biotechnology
  • 14 January 2003
In so-called lower termites, a dual decomposing system, consisting of the termite's own cellulases and those of its gut protists, was elucidated at the molecular level, and the nature of symbioses in the gut shows a highly structured spatial organization. Expand
Molecular analysis of bacterial microbiota in the gut of the termite Reticulitermes speratus (Isoptera; Rhinotermitidae).
The molecular diversity and community structure of bacteria from the gut of the termite Reticulitermes speratus were analyzed by the sequencing of near-full-length 16S rRNA genes, amplified by polymerase chain reaction, indicating a predominance of spirochetes in the gut. Expand
Intra- and Interspecific Comparisons of Bacterial Diversity and Community Structure Support Coevolution of Gut Microbiota and Termite Host
The results suggest that the majority of gut bacteria are not allochthonous but are specific symbionts that have coevolved with termites and that their community structure is basically consistent within a genus of termites. Expand
Phylogenetic Diversity, Localization, and Cell Morphologies of Members of the Candidate Phylum TG3 and a Subphylum in the Phylum Fibrobacteres, Recently Discovered Bacterial Groups Dominant in
The results suggest that the TG3 and Fibrobacteres bacteria are autochthonous gut symbionts of various termites and that theTG3 members are also widely distributed among various other environments. Expand
Intracolony variation of bacterial gut microbiota among castes and ages in the fungus‐growing termite Macrotermes gilvus
It is suggested that gut bacteria have co‐evolved with the termite host and form a microbiota specific to atermite taxonomic and/or feeding group, and furthermore, to caste and age within a termite species. Expand
Candidatus Methanogranum caenicola: a Novel Methanogen from the Anaerobic Digested Sludge, and Proposal of Methanomassiliicoccaceae fam. nov. and Methanomassiliicoccales ord. nov., for a Methanogenic
The provisional taxonomic assignment is proposed, named Candidatus Methanogranum caenicola, for the enriched archaeon Kjm51a belonging to Group E2, and the methanogenic lineage of the class Thermoplasmata is placed in a novel order, Methanomassiliicoccales ord. nov. Expand
Complete genome of the uncultured Termite Group 1 bacteria in a single host protist cell
The first complete genome sequence of a termite gut symbiont—an uncultured bacterium named Rs-D17 belonging to the candidate phylum Termite Group 1—is presented, suggesting that this bacterial group plays a key role in the gut symbiotic system by stably supplying essential nitrogenous compounds deficient in lignocelluloses to their host protists and the termites. Expand
Tempo and Mode of Genome Evolution in the Budding Yeast Subphylum
It is argued that reductive evolution is a major mode of evolutionary diversification and chronicle the tempo and mode of genomic and phenotypic evolution across the subphylum, which is characterized by very low HGT levels and widespread losses of traits and the genes that control them. Expand
Phylogenetic Diversity of Nitrogen Fixation Genes in the Symbiotic Microbial Community in the Gut of Diverse Termites
The results indicate the presence of diverse potentially nitrogen-fixing microbial assemblages in the guts of termites, and the majority of them are as yet uncharacterized. Expand
Cospeciation in the triplex symbiosis of termite gut protists (Pseudotrichonympha spp.), their hosts, and their bacterial endosymbionts
The members of this triplex symbiotic system appear to have cospeciated during their evolution with minor exceptions; the evolutionary relationships were probably established by termite sociality and the complex microbial community in the gut. Expand