Nitrogenase diversity and activity in the gastrointestinal tract of the wood-eating catfish Panaque nigrolineatus

@article{Mcdonald2015NitrogenaseDA,
  title={Nitrogenase diversity and activity in the gastrointestinal tract of the wood-eating catfish Panaque nigrolineatus},
  author={Ryan Mcdonald and Fan Zhang and Joy E.M. Watts and Harold J. Schreier},
  journal={The ISME Journal},
  year={2015},
  volume={9},
  pages={2712 - 2724}
}
The Amazonian catfish, Panaque nigrolineatus, consume large amounts of wood in their diets. The nitrogen-fixing community within the gastrointestinal (GI) tract of these catfish was found to include nifH phylotypes that are closely related to Clostridium sp., Alpha and Gammaproteobacteria, and sequences associated with GI tracts of lower termites. Fish fed a diet of sterilized palm wood were found to contain nifH messenger RNA within their GI tracts, displaying high sequence similarity to the… Expand

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References

SHOWING 1-10 OF 102 REFERENCES
Phylogenetic Analysis of Microbial Communities in Different Regions of the Gastrointestinal Tract in Panaque nigrolineatus, a Wood-Eating Fish
TLDR
Using 16S rRNA gene phylogeny, it is reported that the P. nigrolineatus gastrointestinal tract possesses a microbial community closely related to microorganisms capable of cellulose degradation and nitrogen fixation. Expand
Examination of a Culturable Microbial Population from the Gastrointestinal Tract of the Wood-Eating Loricariid Catfish Panaque nigrolineatus
TLDR
This study verifies the presence of a resident microbial community in the gastrointestinal tract of P. nigrolineatus by fluorescence microscopy and focuses on the cellulose-degrading members by culture-based and 13 C-labeled cellulose DNA stable-isotope probing (SIP) approaches. Expand
Occurrence of rhizobia in the gut of the higher termite Nasutitermes nigriceps.
TLDR
The first report on the detailed identification of a rhizobia-related strain from the intestinal tract of animals is reported, which possesses the capacity to nodulate plant roots. Expand
Nitrogen-fixing Enterobacter agglomerans isolated from guts of wood-eating termites
TLDR
It was concluded that the N2-fixing activity of E. agglomerans may be important to the N economy of C. formosanus and may be related to the marked decrease in N2 fixation rates observed when intact termites or their extracted guts were manipulated for the isolation of bacteria. Expand
Diversity of Nitrogen Fixation Genes in the Symbiotic Intestinal Microflora of the Termite Reticulitermes speratus
TLDR
The phylogenetic analysis of the nifH product amino acid sequences showed that there was a remarkable diversity of nitrogenase genes in the termite gut, and revealed that little knowledge is known of the organisms responsible for nitrogen fixation in termites. Expand
Inside the guts of wood-eating catfishes: can they digest wood?
  • D. P. German
  • Biology, Medicine
  • Journal of Comparative Physiology B
  • 2009
TLDR
Results corroborate digestive enzyme activity profiles and gastrointestinal fermentation levels in the fishes’ GI tracts, suggesting that the wood-eating catfishes are not true xylivores such as beavers and termites, but rather, are detritivores like so many other fishes from the family Loricariidae. Expand
Microbial diversity of intestinal contents and mucus in yellow catfish (Pelteobagrus fulvidraco)
TLDR
The traditional culture-based techniques and the 16S rDNA sequencing method were used to investigate the microbial community of the intestinal contents and mucosal layer in the intestine of yellow catfish, and the abundance and diversity of bacterial populations in mucus might be different from the microbiota in gut contents. Expand
Microbial population dynamics in the faeces of wood‐eating loricariid catfishes
TLDR
The diet‐associated in situ microbial diversity and population dynamic in the faeces of catfish exposed to consecutive diets of pellet food and then wood are characterized and extensive microbial diversity was found in catfish faece, evidenced using culture‐independent molecular techniques. Expand
Bacteroidales ectosymbionts of gut flagellates shape the nitrogen-fixing community in dry-wood termites
TLDR
The findings suggest that the diazotrophic nature of ‘Armantifilum devescovinae’ has an important role in the nitrogen metabolism of dry-wood termites and is the driving force of co-evolution with its flagellate host. Expand
Bacterial microbiota associated with ants of the genus Tetraponera
TLDR
The bacterial diversity associated with several representatives of three species groups of the arboreal ant genus Tetraponera was examined based on genes encoding 16S rRNA, citrate synthase and a structural protein of the dinitrogenase complex ( nifH). Expand
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