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Genome of Rice Cluster I Archaea the Key Methane Producers in the Rice Rhizosphere
Abstract
Rice fields are a global source of the greenhouse gas methane, which is produced by methanogenic archaea, and by methanogens of Rice Cluster I (RC-I) in particular. RC-I methanogens are not yet available in pure culture, and the mechanistic reasons for their prevalence in rice fields are unknown. We reconstructed a complete RC-I genome (3.18 megabases) using a metagenomic approach. Sequence analysis demonstrated an aerotolerant, H 2 /CO 2 -dependent lifestyle and enzymatic capacities for carbohydrate metabolism and assimilatory sulfate reduction, hitherto unknown among methanogens. These capacities and a unique set of antioxidant enzymes and DNA repair mechanisms as well as oxygen-insensitive enzymes provide RC-I with a selective advantage over other methanogens in its habitats, thereby explaining the prevalence of RC-I methanogens in the rice rhizosphere.
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Cited by
Methanogenic archaea: ecologically relevant differences in energy conservation
Thauer, R. K., Kaster, A.-K., Seedorf, H., Buckel, W., & Hedderich, R. (2008) · Nature Reviews Microbiology · doi:10.1038/nrmicro1931 · Cited by 2,184
Metabolic, Phylogenetic, and Ecological Diversity of the Methanogenic Archaea
Liu, Y., & Whitman, W. B. (2008) · Annals of the New York Academy of Sciences · doi:10.1196/annals.1419.019 · Cited by 1,346
A Bioinformatician's Guide to Metagenomics
Kunin, V., Copeland, A., Lapidus, A., Mavromatis, K., & Hugenholtz, P. (2008) · Microbiology and Molecular Biology Reviews · doi:10.1128/mmbr.00009-08 · Cited by 490
Attwood, G., & McSweeney, C. (2008) · Australian Journal of Experimental Agriculture · doi:10.1071/ea07203 · Cited by 72
Metadata
- Authors
- Erkel, C., Kube, M., Reinhardt, R., & Liesack, W.
- Venue
- Science
- Published
- 2006-07-21
- Volume
- 313
- Issue
- 5785
- Pages
- 370-372
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W1992840351
- Cited by
- 196
- References
- 0
- FWCI
- 53.72
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Genome of Rice Cluster I Archaea the Key Methane Producers in the Rice Rhizosphere. https://app.cochat.ai/papers/10.1126/science.1127062
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- Erkel, C., Kube, M., Reinhardt, R., & Liesack, W. (2006). Genome of Rice Cluster I Archaea the Key Methane Producers in the Rice Rhizosphere. Science. https://doi.org/10.1126/science.1127062
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