Unclassified Bradyrhizobium Explained

Unclassified Bradyrhizobium is a genus of Gram-negative Alphaproteobacteria[1] that has not been classified into a specific Bradyrhizobium species.

Unclassified bacteria in the soil

There is a large diversity of bacteria in the soil. Research has shown that there can be between 2000 and 18000 prokaryotic genomes in 1 gram of fresh soil.[2] [3]

Soil microbiological communities are affected by many natural factors, such as humidity, temperature, light, atmospheric pressure and acidity of soil. Stress in the soil environment, often caused by extreme hydrological events such as flooding, changes the functional and structural biodiversity of soil bacteria.[4]

Due to the many factors resulting in complicated changes to the bacteria in the soil, the tools used to describe microbial communities such as next generation sequencing and advances in bioinformatics analysis[5] currently can only provide enough information to group bacteria into a certain genera, but not more specific than that.

Validated publications

There are a total of 70 validly published species of Bradyrhizobium under the International Code of Nomenclature of Prokaryotes (ICNP),[6] the majority equipped with the function of fixing nitrogen.

Notes and References

  1. Web site: taxonomy . Taxonomy browser (unclassified Bradyrhizobium) . 2 July 2023 . www.ncbi.nlm.nih.gov.
  2. Daniel . Rolf . June 2005 . The metagenomics of soil . Nature Reviews Microbiology . en . 3 . 6 . 470–478 . 10.1038/nrmicro1160 . 15931165 . 32604394 . 1740-1526 . 2 July 2023.
  3. Torsvik . Vigdis . Øvreås . Lise . 2002 . Microbial diversity and function in soil: from genes to ecosystems . Current Opinion in Microbiology . en . 5 . 3 . 240–245 . 10.1016/S1369-5274(02)00324-7 . 12057676 . 2 July 2023.
  4. Furtak . Karolina . Grządziel . Jarosław . Gałązka . Anna . Niedźwiecki . Jacek . May 2020 . Prevalence of unclassified bacteria in the soil bacterial community from floodplain meadows (fluvisols) under simulated flood conditions revealed by a metataxonomic approachss . Catena . en . 188 . 104448 . 10.1016/j.catena.2019.104448 . 2020Caten.18804448F . free .
  5. Murali . Adithya . Bhargava . Aniruddha . Wright . Erik S. . 9 August 2018 . IDTAXA: a novel approach for accurate taxonomic classification of microbiome sequences . Microbiome . 6 . 1 . 140 . 10.1186/s40168-018-0521-5 . 2049-2618 . 6085705 . 30092815 . free .
  6. Web site: Genus: Bradyrhizobium . 23 July 2023 . lpsn.dsmz.de . en.

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