N2O-Producing Microorganisms in the Gut of the Earthworm Aporrectodea caliginosa Are Indicative of Ingested Soil Bacteria

@article{Ihssen2003N2OProducingMI,
  title={N2O-Producing Microorganisms in the Gut of the Earthworm Aporrectodea caliginosa Are Indicative of Ingested Soil Bacteria},
  author={J. Ihssen and M. Horn and C. Matthies and A. Gö{\ss}ner and A. Schramm and H. Drake},
  journal={Applied and Environmental Microbiology},
  year={2003},
  volume={69},
  pages={1655 - 1661}
}
ABSTRACT The main objectives of this study were (i) to determine if gut wall-associated microorganisms are responsible for the capacity of earthworms to emit nitrous oxide (N2O) and (ii) to characterize the N2O-producing bacteria of the earthworm gut. The production of N2O in the gut of garden soil earthworms (Aporrectodea caliginosa) was mostly associated with the gut contents rather than the gut wall. Under anoxic conditions, nitrite and N2O were transient products when supplemental nitrate… Expand
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The collective results indicate that dissimilatory nitrate reducers and denitrifiers in the earthworm gut are soil derived and that ingested narG- and nosZ-containing taxa were not uniformly stimulated in the guts of worms from different feeding guilds. Expand
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Clostridiaceae and Enterobacteriaceae as active fermenters in earthworm gut content
TLDR
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Earthworm gut microbial biomes: their importance to soil microorganisms, denitrification, and the terrestrial production of the greenhouse gas N2O
Earthworms colonize many terrestrial ecosystems (Lee 1985; Edwards and Bohlen 1996). Although it is well established that the numerous species of earthworms contribute significantly to the cyclingExpand
Changes in the fatty acid profiles through the digestive tract of the earthworm Lumbricus terrestris L.
TLDR
The results suggest that the microbial community in the earthworm gut is not a casual combination of microorganisms already present in the soil, and they suggest that these gut microbial communities are involved in earthworm digestion processes. Expand
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The Earthworm Gut: an Ideal Habitat for Ingested N2O-Producing Microorganisms
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The hypothesis that the in situ conditions of the earthworm gut activate ingested N2O-producing soil bacteria during gut passage is supported, and a combination of supplements yielded rates greater than that obtained mathematically for single supplements, suggesting that the maximum rates observed were due to synergistic effects of supplements. Expand
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