ArticleApplied and environmental microbiology2013
Genome analysis suggests that the soil oligotrophic bacterium Agromonas oligotrophica (Bradyrhizobium oligotrophicum) is a nitrogen-fixing symbiont of Aeschynomene indica.
Article in Applied and environmental microbiology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.
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25 citing papers in PubMed, 53 citations in OpenAlex.
- Article
- Correlating phylogenetic and functional diversity of the nod-free but nodulating Bradyrhizobium phylogroup.The ISME journal · 2025Article
- Bradyrhizobium ontarionense sp. nov., a novel bacterial symbiont isolated from Aeschynomene indica (Indian jointvetch), harbours photosynthesis, nitrogen fixation and nitrous oxide (NAntonie van Leeuwenhoek · 2024Article
- Characterization of photosyntheticPlant signaling & behavior · 2023Article
- Complex evolutionary history of photosynthesis inMicrobial genomics · 2023Article
- Strains ofInternational journal of systematic and evolutionary microbiology · 2020Article
- Phylogenetic distribution and evolutionary dynamics ofMicrobial genomics · 2020Article
- Diversity of Bradyrhizobium in Non-Leguminous Sorghum Plants: B. ottawaense Isolates Unique in Genes for NMicrobes and environments · 2020Article
- Article
- Molecular Analyses of the Distribution and Function of Diazotrophic Rhizobia and Methanotrophs in the Tissues and Rhizosphere of Non-Leguminous Plants.Plants (Basel, Switzerland) · 2019Review
- Article
- Identification of Nitrogen-FixingFrontiers in microbiology · 2019Article
- Draft Genome Sequence ofMicrobiology resource announcements · 2019Article
- A Genomotaxonomy View of theFrontiers in microbiology · 2019Article
- Nitrogen Cycling in Soybean Rhizosphere: Sources and Sinks of Nitrous Oxide (NFrontiers in microbiology · 2019Review
- Presence of Cu-Type (NirK) and cdMicrobes and environments · 2018Article
- Nitric Oxide Accumulation: The Evolutionary Trigger for Phytopathogenesis.Frontiers in microbiology · 2017Article
- Developing a genetic manipulation system for the Antarctic archaeon, Halorubrum lacusprofundi: investigating acetamidase gene function.Scientific reports · 2016Article
- Origin and Evolution of Nitrogen Fixation Genes on Symbiosis Islands and Plasmid in Bradyrhizobium.Microbes and environments · 2016Article
- Growth Rate of and Gene Expression in Bradyrhizobium diazoefficiens USDA110 due to a Mutation in blr7984, a TetR Family Transcriptional Regulator Gene.Microbes and environments · 2016Article
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11 authors at 3 institutions in 2 countries.
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No grant is acknowledged in the PubMed record.
Abstract
Agromonas oligotrophica (Bradyrhizobium oligotrophicum) S58(T) is a nitrogen-fixing oligotrophic bacterium isolated from paddy field soil that is able to grow in extra-low-nutrient environments. Here, the complete genome sequence of S58 was determined. The S58 genome was found to comprise a circular chromosome of 8,264,165 bp with an average GC content of 65.1% lacking nodABC genes and the typical symbiosis island. The genome showed a high level of similarity to the genomes of Bradyrhizobium sp. ORS278 and Bradyrhizobium sp. BTAi1, including nitrogen fixation and photosynthesis gene clusters, which nodulate an aquatic legume plant, Aeschynomene indica, in a Nod factor-independent manner. Although nonsymbiotic (brady)rhizobia are significant components of rhizobial populations in soil, we found that most genes important for nodule development (ndv) and symbiotic nitrogen fixation (nif and fix) with A. indica were well conserved between the ORS278 and S58 genomes. Therefore, we performed inoculation experiments with five A. oligotrophica strains (S58, S42, S55, S72, and S80). Surprisingly, all five strains of A. oligotrophica formed effective nitrogen-fixing nodules on the roots and/or stems of A. indica, with differentiated bacteroids. Nonsymbiotic (brady)rhizobia are known to be significant components of rhizobial populations without a symbiosis island or symbiotic plasmids in soil, but the present results indicate that soil-dwelling A. oligotrophica generally possesses the ability to establish symbiosis with A. indica. Phylogenetic analyses suggest that Nod factor-independent symbiosis with A. indica is a common trait of nodABC- and symbiosis island-lacking strains within the members of the photosynthetic Bradyrhizobium clade, including A. oligotrophica.
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